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diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea0baf2 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +*.o +*.swp +*.bak @@ -0,0 +1,49 @@ +Copyright (C) 2013, SEMTECH S.A. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the Semtech corporation nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL SEMTECH S.A. BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + +--- For the parson library --- + +Parson ( http://kgabis.github.com/parson/ ) +Copyright (C) 2012 Krzysztof Gabis + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +ITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..aee59c7 --- /dev/null +++ b/Makefile @@ -0,0 +1,22 @@ +### Environment constants + +LGW_PATH ?= ../../lora_gateway/libloragw +ARCH ?= +CROSS_COMPILE ?= +export + +### general build targets + +all: + $(MAKE) all -e -C lora_pkt_fwd + $(MAKE) all -e -C util_ack + $(MAKE) all -e -C util_sink + $(MAKE) all -e -C util_tx_test + +clean: + $(MAKE) clean -e -C lora_pkt_fwd + $(MAKE) clean -e -C util_ack + $(MAKE) clean -e -C util_sink + $(MAKE) clean -e -C util_tx_test + +### EOF diff --git a/PROTOCOL.TXT b/PROTOCOL.TXT new file mode 100644 index 0000000..d479fbe --- /dev/null +++ b/PROTOCOL.TXT @@ -0,0 +1,461 @@ + ______ _ + / _____) _ | | + ( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | + (______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Basic communication protocol between Lora gateway and server +============================================================= + + +1. Introduction +---------------- + +The protocol between the gateway and the server is purposefully very basic and +for demonstration purpose only, or for use on private and reliable networks. + +There is no authentication of the gateway or the server, and the acknowledges +are only used for network quality assessment, not to correct UDP datagrams +losses (no retries). + + +2. System schematic and definitions +------------------------------------ + + ((( Y ))) + | + | + + - -|- - - - - - - - - - - - - + xxxxxxxxxxxx +--------+ + | +--+-----------+ +------+ | xx x x xxx | | + | | | | | | xx Internet xx | | + | | Concentrator |<--->| Host |<-------xx or xx-------->| | + | | | SPI | | | xx Intranet xx | Server | + | +--------------+ +------+ | xxxx x xxxx | | + | ^ ^ | xxxxxxxx | | + | | PPS +-------+ NMEA | | | | + | +-----| GPS |-------+ | +--------+ + | | (opt) | | + | +-------+ | + | | + | Gateway | + +- - - - - - - - - - - - - - - -+ + +__Concentrator__: radio RX/TX board, based on Semtech multichannel modems +(SX130x), transceivers (SX135x) and/or low-power stand-alone modems (SX127x). + +__Host__: embedded computer on which the packet forwarder is run. Drives the +concentrator through a SPI link. + +__GPS__: GNSS (GPS, Galileo, GLONASS, etc) receiver with a "1 Pulse Per Second" +output and a serial link to the host to send NMEA frames containing time and +geographical coordinates data. Optional. + +__Gateway__: a device composed of at least one radio concentrator, a host, some +network connection to the internet or a private network (Ethernet, 3G, Wifi, +microwave link), and optionally a GPS receiver for synchronization. + +__Server__: an abstract computer that will process the RF packets received and +forwarded by the gateway, and issue RF packets in response that the gateway +will have to emit. + +It is assumed that the gateway can be behind a NAT or a firewall stopping any +incoming connection. +It is assumed that the server has an static IP address (or an address solvable +through a DNS service) and is able to receive incoming connections on a +specific port. + + +3. Upstream protocol +--------------------- + +### 3.1. Sequence diagram ### + + +---------+ +---------+ + | Gateway | | Server | + +---------+ +---------+ + | -----------------------------------\ | + |-| When 1-N RF packets are received | | + | ------------------------------------ | + | | + | PUSH_DATA (token X, GW MAC, JSON payload) | + |------------------------------------------------------------->| + | | + | PUSH_ACK (token X) | + |<-------------------------------------------------------------| + | ------------------------------\ | + | | process packets *after* ack |-| + | ------------------------------- | + | | + +### 3.2. PUSH_DATA packet ### + +That packet type is used by the gateway mainly to forward the RF packets +received, and associated metadata, to the server. + + Bytes | Function +:------:|--------------------------------------------------------------------- + 0 | protocol version = 2 + 1-2 | random token + 3 | PUSH_DATA identifier 0x00 + 4-11 | Gateway unique identifier (MAC address) + 12-end | JSON object, starting with {, ending with }, see section 4 + +### 3.3. PUSH_ACK packet ### + +That packet type is used by the server to acknowledge immediately all the +PUSH_DATA packets received. + + Bytes | Function +:------:|--------------------------------------------------------------------- + 0 | protocol version = 2 + 1-2 | same token as the PUSH_DATA packet to acknowledge + 3 | PUSH_ACK identifier 0x01 + + +4. Upstream JSON data structure +-------------------------------- + +The root object can contain an array named "rxpk": + +``` json +{ + "rxpk":[ {...}, ...] +} +``` + +That array contains at least one JSON object, each object contain a RF packet +and associated metadata with the following fields: + + Name | Type | Function +:----:|:------:|-------------------------------------------------------------- + time | string | UTC time of pkt RX, us precision, ISO 8601 'compact' format + tmms | number | GPS time of pkt RX, number of milliseconds since 06.Jan.1980 + tmst | number | Internal timestamp of "RX finished" event (32b unsigned) + freq | number | RX central frequency in MHz (unsigned float, Hz precision) + chan | number | Concentrator "IF" channel used for RX (unsigned integer) + rfch | number | Concentrator "RF chain" used for RX (unsigned integer) + stat | number | CRC status: 1 = OK, -1 = fail, 0 = no CRC + modu | string | Modulation identifier "LORA" or "FSK" + datr | string | LoRa datarate identifier (eg. SF12BW500) + datr | number | FSK datarate (unsigned, in bits per second) + codr | string | LoRa ECC coding rate identifier + rssi | number | RSSI in dBm (signed integer, 1 dB precision) + lsnr | number | Lora SNR ratio in dB (signed float, 0.1 dB precision) + size | number | RF packet payload size in bytes (unsigned integer) + data | string | Base64 encoded RF packet payload, padded + +Example (white-spaces, indentation and newlines added for readability): + +``` json +{"rxpk":[ + { + "time":"2013-03-31T16:21:17.528002Z", + "tmst":3512348611, + "chan":2, + "rfch":0, + "freq":866.349812, + "stat":1, + "modu":"LORA", + "datr":"SF7BW125", + "codr":"4/6", + "rssi":-35, + "lsnr":5.1, + "size":32, + "data":"-DS4CGaDCdG+48eJNM3Vai-zDpsR71Pn9CPA9uCON84" + },{ + "time":"2013-03-31T16:21:17.530974Z", + "tmst":3512348514, + "chan":9, + "rfch":1, + "freq":869.1, + "stat":1, + "modu":"FSK", + "datr":50000, + "rssi":-75, + "size":16, + "data":"VEVTVF9QQUNLRVRfMTIzNA==" + },{ + "time":"2013-03-31T16:21:17.532038Z", + "tmst":3316387610, + "chan":0, + "rfch":0, + "freq":863.00981, + "stat":1, + "modu":"LORA", + "datr":"SF10BW125", + "codr":"4/7", + "rssi":-38, + "lsnr":5.5, + "size":32, + "data":"ysgRl452xNLep9S1NTIg2lomKDxUgn3DJ7DE+b00Ass" + } +]} +``` + +The root object can also contain an object named "stat" : + +``` json +{ + "rxpk":[ {...}, ...], + "stat":{...} +} +``` + +It is possible for a packet to contain no "rxpk" array but a "stat" object. + +``` json +{ + "stat":{...} +} +``` + +That object contains the status of the gateway, with the following fields: + + Name | Type | Function +:----:|:------:|-------------------------------------------------------------- + time | string | UTC 'system' time of the gateway, ISO 8601 'expanded' format + lati | number | GPS latitude of the gateway in degree (float, N is +) + long | number | GPS latitude of the gateway in degree (float, E is +) + alti | number | GPS altitude of the gateway in meter RX (integer) + rxnb | number | Number of radio packets received (unsigned integer) + rxok | number | Number of radio packets received with a valid PHY CRC + rxfw | number | Number of radio packets forwarded (unsigned integer) + ackr | number | Percentage of upstream datagrams that were acknowledged + dwnb | number | Number of downlink datagrams received (unsigned integer) + txnb | number | Number of packets emitted (unsigned integer) + +Example (white-spaces, indentation and newlines added for readability): + +``` json +{"stat":{ + "time":"2014-01-12 08:59:28 GMT", + "lati":46.24000, + "long":3.25230, + "alti":145, + "rxnb":2, + "rxok":2, + "rxfw":2, + "ackr":100.0, + "dwnb":2, + "txnb":2 +}} +``` + + +5. Downstream protocol +----------------------- + +### 5.1. Sequence diagram ### + + +---------+ +---------+ + | Gateway | | Server | + +---------+ +---------+ + | -----------------------------------\ | + |-| Every N seconds (keepalive time) | | + | ------------------------------------ | + | | + | PULL_DATA (token Y, MAC@) | + |------------------------------------------------------------->| + | | + | PULL_ACK (token Y) | + |<-------------------------------------------------------------| + | | + + +---------+ +---------+ + | Gateway | | Server | + +---------+ +---------+ + | ------------------------------------------------------\ | + | | Anytime after first PULL_DATA for each packet to TX |-| + | ------------------------------------------------------- | + | | + | PULL_RESP (token Z, JSON payload) | + |<-------------------------------------------------------------| + | | + | TX_ACK (token Z, JSON payload) | + |------------------------------------------------------------->| + +### 5.2. PULL_DATA packet ### + +That packet type is used by the gateway to poll data from the server. + +This data exchange is initialized by the gateway because it might be +impossible for the server to send packets to the gateway if the gateway is +behind a NAT. + +When the gateway initialize the exchange, the network route towards the +server will open and will allow for packets to flow both directions. +The gateway must periodically send PULL_DATA packets to be sure the network +route stays open for the server to be used at any time. + + Bytes | Function +:------:|--------------------------------------------------------------------- + 0 | protocol version = 2 + 1-2 | random token + 3 | PULL_DATA identifier 0x02 + 4-11 | Gateway unique identifier (MAC address) + +### 5.3. PULL_ACK packet ### + +That packet type is used by the server to confirm that the network route is +open and that the server can send PULL_RESP packets at any time. + + Bytes | Function +:------:|--------------------------------------------------------------------- + 0 | protocol version = 2 + 1-2 | same token as the PULL_DATA packet to acknowledge + 3 | PULL_ACK identifier 0x04 + +### 5.4. PULL_RESP packet ### + +That packet type is used by the server to send RF packets and associated +metadata that will have to be emitted by the gateway. + + Bytes | Function +:------:|--------------------------------------------------------------------- + 0 | protocol version = 2 + 1-2 | random token + 3 | PULL_RESP identifier 0x03 + 4-end | JSON object, starting with {, ending with }, see section 6 + +### 5.5. TX_ACK packet ### + +That packet type is used by the gateway to send a feedback to the server +to inform if a downlink request has been accepted or rejected by the gateway. +The datagram may optionnaly contain a JSON string to give more details on +acknoledge. If no JSON is present (empty string), this means than no error +occured. + + Bytes | Function +:------:|--------------------------------------------------------------------- + 0 | protocol version = 2 + 1-2 | same token as the PULL_RESP packet to acknowledge + 3 | TX_ACK identifier 0x05 + 4-11 | Gateway unique identifier (MAC address) + 12-end | [optional] JSON object, starting with {, ending with }, see section 6 + +6. Downstream JSON data structure +---------------------------------- + +The root object of PULL_RESP packet must contain an object named "txpk": + +``` json +{ + "txpk": {...} +} +``` + +That object contain a RF packet to be emitted and associated metadata with the following fields: + + Name | Type | Function +:----:|:------:|-------------------------------------------------------------- + imme | bool | Send packet immediately (will ignore tmst & time) + tmst | number | Send packet on a certain timestamp value (will ignore time) + tmms | number | Send packet at a certain GPS time (GPS synchronization required) + freq | number | TX central frequency in MHz (unsigned float, Hz precision) + rfch | number | Concentrator "RF chain" used for TX (unsigned integer) + powe | number | TX output power in dBm (unsigned integer, dBm precision) + modu | string | Modulation identifier "LORA" or "FSK" + datr | string | LoRa datarate identifier (eg. SF12BW500) + datr | number | FSK datarate (unsigned, in bits per second) + codr | string | LoRa ECC coding rate identifier + fdev | number | FSK frequency deviation (unsigned integer, in Hz) + ipol | bool | Lora modulation polarization inversion + prea | number | RF preamble size (unsigned integer) + size | number | RF packet payload size in bytes (unsigned integer) + data | string | Base64 encoded RF packet payload, padding optional + ncrc | bool | If true, disable the CRC of the physical layer (optional) + +Most fields are optional. +If a field is omitted, default parameters will be used. + +Examples (white-spaces, indentation and newlines added for readability): + +``` json +{"txpk":{ + "imme":true, + "freq":864.123456, + "rfch":0, + "powe":14, + "modu":"LORA", + "datr":"SF11BW125", + "codr":"4/6", + "ipol":false, + "size":32, + "data":"H3P3N2i9qc4yt7rK7ldqoeCVJGBybzPY5h1Dd7P7p8v" +}} +``` + +``` json +{"txpk":{ + "imme":true, + "freq":861.3, + "rfch":0, + "powe":12, + "modu":"FSK", + "datr":50000, + "fdev":3000, + "size":32, + "data":"H3P3N2i9qc4yt7rK7ldqoeCVJGBybzPY5h1Dd7P7p8v" +}} +``` + +The root object of TX_ACK packet must contain an object named "txpk_ack": + +``` json +{ + "txpk_ack": {...} +} +``` + +That object contain status information concerning the associated PULL_RESP packet. + + Name | Type | Function +:----:|:------:|------------------------------------------------------------------------------ +error | string | Indication about success or type of failure that occured for downlink request. + +The possible values of "error" field are: + + Value | Definition +:-----------------:|--------------------------------------------------------------------- + NONE | Packet has been programmed for downlink + TOO_LATE | Rejected because it was already too late to program this packet for downlink + TOO_EARLY | Rejected because downlink packet timestamp is too much in advance + COLLISION_PACKET | Rejected because there was already a packet programmed in requested timeframe + COLLISION_BEACON | Rejected because there was already a beacon planned in requested timeframe + TX_FREQ | Rejected because requested frequency is not supported by TX RF chain + TX_POWER | Rejected because requested power is not supported by gateway + GPS_UNLOCKED | Rejected because GPS is unlocked, so GPS timestamp cannot be used + +Examples (white-spaces, indentation and newlines added for readability): + +``` json +{"txpk_ack":{ + "error":"COLLISION_PACKET" +}} +``` + +7. Revisions +------------- + +### v1.4 ### +* Added "tmms" field for GPS time as a monotonic number of milliseconds +ellapsed since January 6th, 1980 (GPS Epoch). No leap second. + +### v1.3 ### + +* Added downlink feedback from gateway to server (PULL_RESP -> TX_ACK) + +### v1.2 ### + +* Added value of FSK bitrate for upstream. +* Added parameters for FSK bitrate and frequency deviation for downstream. + +### v1.1 ### + +* Added syntax for status report JSON object on upstream. + +### v1.0 ### + +* Initial version. @@ -0,0 +1 @@ +4.0.1 diff --git a/compile.sh b/compile.sh new file mode 100755 index 0000000..43c8b4f --- /dev/null +++ b/compile.sh @@ -0,0 +1,75 @@ +#!/bin/bash + +LORA_GATEWAY_DRIVER_PATH=../lora_gateway + +TARGET_IP_ADDRESS=192.168.0.1 +TARGET_PATH=/home/pi/lora-net +TARGET_USER=pi + +clean_all() { + make clean -C $LORA_GATEWAY_DRIVER_PATH + if [ $? != 0 ] + then + echo "ERROR: Failed to clean $LORA_GATEWAY_DRIVER_PATH" + exit 1 + fi + make clean + if [ $? != 0 ] + then + exit 1 + fi +} + +build_all() { + make all -C $LORA_GATEWAY_DRIVER_PATH + if [ $? != 0 ] + then + echo "ERROR: Failed to compile $LORA_GATEWAY_DRIVER_PATH" + exit 1 + fi + make all + if [ $? != 0 ] + then + exit 1 + fi +} + +install() { + scp ./lora_pkt_fwd/lora_pkt_fwd $TARGET_USER@$TARGET_IP_ADDRESS:$TARGET_PATH + if [ $? != 0 ] + then + echo "ERROR: Failed to install the packet forwarder" + echo " target info: $TARGET_IP_ADDRESS, $TARGET_USER, $TARGET_PATH" + exit 1 + fi +} + +case "$1" in + install) + install + ;; + + clean) + clean_all + ;; + + cleanall) + # clean and rebuild + clean_all + build_all + ;; + + -h) + echo "Compile the complete gateway software (driver & packet forwarder)" + echo "Usage: $0 [clean/cleanall/install]" + exit 1 + ;; + + *) + # rebuild + build_all + ;; +esac + +exit 0 + diff --git a/lora_pkt_fwd/Makefile b/lora_pkt_fwd/Makefile new file mode 100644 index 0000000..1330d62 --- /dev/null +++ b/lora_pkt_fwd/Makefile @@ -0,0 +1,67 @@ +### Application-specific constants + +APP_NAME := lora_pkt_fwd + +### Environment constants + +LGW_PATH ?= ../../lora_gateway/libloragw +ARCH ?= +CROSS_COMPILE ?= + +OBJDIR = obj +INCLUDES = $(wildcard inc/*.h) + +### External constant definitions +# must get library build option to know if mpsse must be linked or not + +include $(LGW_PATH)/library.cfg +RELEASE_VERSION := `cat ../VERSION` + +### Constant symbols + +CC := $(CROSS_COMPILE)gcc +AR := $(CROSS_COMPILE)ar + +CFLAGS := -O2 -Wall -Wextra -std=c99 -Iinc -I. +VFLAG := -D VERSION_STRING="\"$(RELEASE_VERSION)\"" + +### Constants for Lora concentrator HAL library +# List the library sub-modules that are used by the application + +LGW_INC = +ifneq ($(wildcard $(LGW_PATH)/inc/config.h),) + # only for HAL version 1.3 and beyond + LGW_INC += $(LGW_PATH)/inc/config.h +endif +LGW_INC += $(LGW_PATH)/inc/loragw_hal.h +LGW_INC += $(LGW_PATH)/inc/loragw_gps.h + +### Linking options + +LIBS := -lloragw -lrt -lpthread -lm + +### General build targets + +all: $(APP_NAME) + +clean: + rm -f $(OBJDIR)/*.o + rm -f $(APP_NAME) + +### Sub-modules compilation + +$(OBJDIR): + mkdir -p $(OBJDIR) + +$(OBJDIR)/%.o: src/%.c $(INCLUDES) | $(OBJDIR) + $(CC) -c $(CFLAGS) -I$(LGW_PATH)/inc $< -o $@ + +### Main program compilation and assembly + +$(OBJDIR)/$(APP_NAME).o: src/$(APP_NAME).c $(LGW_INC) $(INCLUDES) | $(OBJDIR) + $(CC) -c $(CFLAGS) $(VFLAG) -I$(LGW_PATH)/inc $< -o $@ + +$(APP_NAME): $(OBJDIR)/$(APP_NAME).o $(LGW_PATH)/libloragw.a $(OBJDIR)/parson.o $(OBJDIR)/base64.o $(OBJDIR)/jitqueue.o $(OBJDIR)/timersync.o + $(CC) -L$(LGW_PATH) $< $(OBJDIR)/parson.o $(OBJDIR)/base64.o $(OBJDIR)/jitqueue.o $(OBJDIR)/timersync.o -o $@ $(LIBS) + +### EOF diff --git a/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.basic b/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.basic new file mode 100644 index 0000000..7119eb1 --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.basic @@ -0,0 +1,188 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 0 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 0 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 12, + "rf_power": 0, + "dig_gain": 0 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 1, + "mix_gain": 8, + "rf_power": 3, + "dig_gain": 0 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 0 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 0 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 11, + "dig_gain": 0 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 15, + "rf_power": 13, + "dig_gain": 0 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 2, + "mix_gain": 10, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 16, + "dig_gain": 0 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 3, + "mix_gain": 9, + "rf_power": 20, + "dig_gain": 0 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.beacon b/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.beacon new file mode 100644 index 0000000..c5796b5 --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.beacon @@ -0,0 +1,201 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 0 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 0 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 12, + "rf_power": 0, + "dig_gain": 0 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 1, + "mix_gain": 8, + "rf_power": 3, + "dig_gain": 0 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 0 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 0 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 11, + "dig_gain": 0 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 15, + "rf_power": 13, + "dig_gain": 0 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 2, + "mix_gain": 10, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 16, + "dig_gain": 0 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 3, + "mix_gain": 9, + "rf_power": 20, + "dig_gain": 0 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false, + /* GPS configuration */ + "gps_tty_path": "/dev/ttyAMA0", + /* GPS reference coordinates */ + "ref_latitude": 0.0, + "ref_longitude": 0.0, + "ref_altitude": 0, + /* Beaconing parameters */ + "beacon_period": 128, + "beacon_freq_hz": 869525000, + "beacon_datarate": 9, + "beacon_bw_hz": 125000, + "beacon_power": 14, + "beacon_infodesc": 0 + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.gps b/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.gps new file mode 100644 index 0000000..da76f8d --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.PCB_E286.EU868.gps @@ -0,0 +1,194 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 0 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 0 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 12, + "rf_power": 0, + "dig_gain": 0 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 1, + "mix_gain": 8, + "rf_power": 3, + "dig_gain": 0 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 0 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 0 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 11, + "dig_gain": 0 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 15, + "rf_power": 13, + "dig_gain": 0 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 2, + "mix_gain": 10, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 16, + "dig_gain": 0 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 3, + "mix_gain": 9, + "rf_power": 20, + "dig_gain": 0 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false, + /* GPS configuration */ + "gps_tty_path": "/dev/ttyAMA0", + /* GPS reference coordinates */ + "ref_latitude": 0.0, + "ref_longitude": 0.0, + "ref_altitude": 0 + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.basic b/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.basic new file mode 100644 index 0000000..51f0f5a --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.basic @@ -0,0 +1,228 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "lbt_cfg": { + "enable": false, + "rssi_target": -80, /* dBm */ + "chan_cfg":[ /* 8 channels maximum */ + { "freq_hz": 867100000, "scan_time_us": 128 }, + { "freq_hz": 867300000, "scan_time_us": 5000 }, + { "freq_hz": 867500000, "scan_time_us": 128 }, + { "freq_hz": 869525000, "scan_time_us": 128 } + ], + "sx127x_rssi_offset": -4 /* dB */ + }, + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -165.0, + "tx_enable": true, + "tx_notch_freq": 129000, /* [126..250] KHz */ + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -165.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 3 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 3 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": 0, + "dig_gain": 1 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 0, + "mix_gain": 14, + "rf_power": 3, + "dig_gain": 2 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 3 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 2 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 11, + "dig_gain": 1 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 14, + "rf_power": 13, + "dig_gain": 2 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 16, + "dig_gain": 2 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 20, + "dig_gain": 1 + }, + "tx_lut_12": { + /* TX gain table, index 12 */ + "pa_gain": 2, + "mix_gain": 13, + "rf_power": 23, + "dig_gain": 1 + }, + "tx_lut_13": { + /* TX gain table, index 13 */ + "pa_gain": 2, + "mix_gain": 15, + "rf_power": 25, + "dig_gain": 2 + }, + "tx_lut_14": { + /* TX gain table, index 14 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 26, + "dig_gain": 2 + }, + "tx_lut_15": { + /* TX gain table, index 15 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 27, + "dig_gain": 1 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.beacon b/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.beacon new file mode 100644 index 0000000..bcc7b72 --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.beacon @@ -0,0 +1,241 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "lbt_cfg": { + "enable": false, + "rssi_target": -80, /* dBm */ + "chan_cfg":[ /* 8 channels maximum */ + { "freq_hz": 867100000, "scan_time_us": 128 }, + { "freq_hz": 867300000, "scan_time_us": 5000 }, + { "freq_hz": 867500000, "scan_time_us": 128 }, + { "freq_hz": 869525000, "scan_time_us": 128 } + ], + "sx127x_rssi_offset": -4 /* dB */ + }, + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -165.0, + "tx_enable": true, + "tx_notch_freq": 129000, /* [126..250] KHz */ + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -165.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 3 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 3 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": 0, + "dig_gain": 1 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 0, + "mix_gain": 14, + "rf_power": 3, + "dig_gain": 2 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 3 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 2 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 11, + "dig_gain": 1 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 14, + "rf_power": 13, + "dig_gain": 2 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 16, + "dig_gain": 2 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 20, + "dig_gain": 1 + }, + "tx_lut_12": { + /* TX gain table, index 12 */ + "pa_gain": 2, + "mix_gain": 13, + "rf_power": 23, + "dig_gain": 1 + }, + "tx_lut_13": { + /* TX gain table, index 13 */ + "pa_gain": 2, + "mix_gain": 15, + "rf_power": 25, + "dig_gain": 2 + }, + "tx_lut_14": { + /* TX gain table, index 14 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 26, + "dig_gain": 2 + }, + "tx_lut_15": { + /* TX gain table, index 15 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 27, + "dig_gain": 1 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false, + /* GPS configuration */ + "gps_tty_path": "/dev/ttyAMA0", + /* GPS reference coordinates */ + "ref_latitude": 0.0, + "ref_longitude": 0.0, + "ref_altitude": 0, + /* Beaconing parameters */ + "beacon_period": 128, + "beacon_freq_hz": 869525000, + "beacon_datarate": 9, + "beacon_bw_hz": 125000, + "beacon_power": 14, + "beacon_infodesc": 0 + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.gps b/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.gps new file mode 100644 index 0000000..f25bb7a --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.PCB_E336.EU868.gps @@ -0,0 +1,234 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "lbt_cfg": { + "enable": false, + "rssi_target": -80, /* dBm */ + "chan_cfg":[ /* 8 channels maximum */ + { "freq_hz": 867100000, "scan_time_us": 128 }, + { "freq_hz": 867300000, "scan_time_us": 5000 }, + { "freq_hz": 867500000, "scan_time_us": 128 }, + { "freq_hz": 869525000, "scan_time_us": 128 } + ], + "sx127x_rssi_offset": -4 /* dB */ + }, + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -165.0, + "tx_enable": true, + "tx_notch_freq": 129000, /* [126..250] KHz */ + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -165.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 3 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 3 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": 0, + "dig_gain": 1 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 0, + "mix_gain": 14, + "rf_power": 3, + "dig_gain": 2 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 3 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 2 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 11, + "dig_gain": 1 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 14, + "rf_power": 13, + "dig_gain": 2 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 16, + "dig_gain": 2 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 20, + "dig_gain": 1 + }, + "tx_lut_12": { + /* TX gain table, index 12 */ + "pa_gain": 2, + "mix_gain": 13, + "rf_power": 23, + "dig_gain": 1 + }, + "tx_lut_13": { + /* TX gain table, index 13 */ + "pa_gain": 2, + "mix_gain": 15, + "rf_power": 25, + "dig_gain": 2 + }, + "tx_lut_14": { + /* TX gain table, index 14 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 26, + "dig_gain": 2 + }, + "tx_lut_15": { + /* TX gain table, index 15 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 27, + "dig_gain": 1 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false, + /* GPS configuration */ + "gps_tty_path": "/dev/ttyAMA0", + /* GPS reference coordinates */ + "ref_latitude": 0.0, + "ref_longitude": 0.0, + "ref_altitude": 0 + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.US902.basic b/lora_pkt_fwd/cfg/global_conf.json.US902.basic new file mode 100644 index 0000000..3914956 --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.US902.basic @@ -0,0 +1,104 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 902700000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_freq_min": 902000000, + "tx_freq_max": 928000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 903400000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 902.3 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 902.5 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 902.7 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 902.9 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 903.1 MHz */ + "enable": true, + "radio": 1, + "if": -300000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 903.3 MHz */ + "enable": true, + "radio": 1, + "if": -100000 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 903.5 MHz */ + "enable": true, + "radio": 1, + "if": 100000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 903.7 MHz */ + "enable": true, + "radio": 1, + "if": 300000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 500kHz, SF8, 903.0 MHz */ + "enable": true, + "radio": 0, + "if": 300000, + "bandwidth": 500000, + "spread_factor": 8 + }, + "chan_FSK": { + /* FSK 100kbps channel, 903.0 MHz */ + "enable": false, + "radio": 0, + "if": 300000, + "bandwidth": 250000, + "datarate": 100000 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.US902.beacon b/lora_pkt_fwd/cfg/global_conf.json.US902.beacon new file mode 100644 index 0000000..3592d40 --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.US902.beacon @@ -0,0 +1,119 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 902700000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_freq_min": 902000000, + "tx_freq_max": 928000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 903400000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 902.3 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 902.5 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 902.7 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 902.9 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 903.1 MHz */ + "enable": true, + "radio": 1, + "if": -300000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 903.3 MHz */ + "enable": true, + "radio": 1, + "if": -100000 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 903.5 MHz */ + "enable": true, + "radio": 1, + "if": 100000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 903.7 MHz */ + "enable": true, + "radio": 1, + "if": 300000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 500kHz, SF8, 903.0 MHz */ + "enable": true, + "radio": 0, + "if": 300000, + "bandwidth": 500000, + "spread_factor": 8 + }, + "chan_FSK": { + /* FSK 100kbps channel, 903.0 MHz */ + "enable": false, + "radio": 0, + "if": 300000, + "bandwidth": 250000, + "datarate": 100000 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false, + /* GPS configuration */ + "gps_tty_path": "/dev/ttyAMA0", + /* GPS reference coordinates */ + "ref_latitude": 0.0, + "ref_longitude": 0.0, + "ref_altitude": 0, + /* Beaconing parameters */ + "beacon_period": 128, + "beacon_freq_hz": 923300000, + "beacon_freq_nb": 8, + "beacon_freq_step": 600000, + "beacon_datarate": 12, + "beacon_bw_hz": 500000, + "beacon_power": 14, + "beacon_infodesc": 0 + } +} + diff --git a/lora_pkt_fwd/cfg/global_conf.json.US902.gps b/lora_pkt_fwd/cfg/global_conf.json.US902.gps new file mode 100644 index 0000000..ddd0928 --- /dev/null +++ b/lora_pkt_fwd/cfg/global_conf.json.US902.gps @@ -0,0 +1,110 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 902700000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_freq_min": 902000000, + "tx_freq_max": 928000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 903400000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 902.3 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 902.5 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 902.7 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 902.9 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 903.1 MHz */ + "enable": true, + "radio": 1, + "if": -300000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 903.3 MHz */ + "enable": true, + "radio": 1, + "if": -100000 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 903.5 MHz */ + "enable": true, + "radio": 1, + "if": 100000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 903.7 MHz */ + "enable": true, + "radio": 1, + "if": 300000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 500kHz, SF8, 903.0 MHz */ + "enable": true, + "radio": 0, + "if": 300000, + "bandwidth": 500000, + "spread_factor": 8 + }, + "chan_FSK": { + /* FSK 100kbps channel, 903.0 MHz */ + "enable": false, + "radio": 0, + "if": 300000, + "bandwidth": 250000, + "datarate": 100000 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false, + /* GPS configuration */ + "gps_tty_path": "/dev/ttyAMA0", + /* GPS reference coordinates */ + "ref_latitude": 0.0, + "ref_longitude": 0.0, + "ref_altitude": 0 + } +} + diff --git a/lora_pkt_fwd/global_conf.json b/lora_pkt_fwd/global_conf.json new file mode 100644 index 0000000..2d0948c --- /dev/null +++ b/lora_pkt_fwd/global_conf.json @@ -0,0 +1,228 @@ +{ + "SX1301_conf": { + "lorawan_public": true, + "clksrc": 1, /* radio_1 provides clock to concentrator */ + "lbt_cfg": { + "enable": false, + "rssi_target": -80, /* dBm */ + "chan_cfg":[ /* 8 channels maximum */ + { "freq_hz": 867100000, "scan_time_us": 128 }, + { "freq_hz": 867300000, "scan_time_us": 5000 }, + { "freq_hz": 867500000, "scan_time_us": 128 }, + { "freq_hz": 869525000, "scan_time_us": 128 } + ], + "sx127x_rssi_offset": -4 /* dB */ + }, + "antenna_gain": 0, /* antenna gain, in dBi */ + "radio_0": { + "enable": true, + "type": "SX1257", + "freq": 867500000, + "rssi_offset": -166.0, + "tx_enable": true, + "tx_notch_freq": 129000, /* [126..250] KHz */ + "tx_freq_min": 863000000, + "tx_freq_max": 870000000 + }, + "radio_1": { + "enable": true, + "type": "SX1257", + "freq": 868500000, + "rssi_offset": -166.0, + "tx_enable": false + }, + "chan_multiSF_0": { + /* Lora MAC channel, 125kHz, all SF, 868.1 MHz */ + "enable": true, + "radio": 1, + "if": -400000 + }, + "chan_multiSF_1": { + /* Lora MAC channel, 125kHz, all SF, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000 + }, + "chan_multiSF_2": { + /* Lora MAC channel, 125kHz, all SF, 868.5 MHz */ + "enable": true, + "radio": 1, + "if": 0 + }, + "chan_multiSF_3": { + /* Lora MAC channel, 125kHz, all SF, 867.1 MHz */ + "enable": true, + "radio": 0, + "if": -400000 + }, + "chan_multiSF_4": { + /* Lora MAC channel, 125kHz, all SF, 867.3 MHz */ + "enable": true, + "radio": 0, + "if": -200000 + }, + "chan_multiSF_5": { + /* Lora MAC channel, 125kHz, all SF, 867.5 MHz */ + "enable": true, + "radio": 0, + "if": 0 + }, + "chan_multiSF_6": { + /* Lora MAC channel, 125kHz, all SF, 867.7 MHz */ + "enable": true, + "radio": 0, + "if": 200000 + }, + "chan_multiSF_7": { + /* Lora MAC channel, 125kHz, all SF, 867.9 MHz */ + "enable": true, + "radio": 0, + "if": 400000 + }, + "chan_Lora_std": { + /* Lora MAC channel, 250kHz, SF7, 868.3 MHz */ + "enable": true, + "radio": 1, + "if": -200000, + "bandwidth": 250000, + "spread_factor": 7 + }, + "chan_FSK": { + /* FSK 50kbps channel, 868.8 MHz */ + "enable": true, + "radio": 1, + "if": 300000, + "bandwidth": 125000, + "datarate": 50000 + }, + "tx_lut_0": { + /* TX gain table, index 0 */ + "pa_gain": 0, + "mix_gain": 8, + "rf_power": -6, + "dig_gain": 0 + }, + "tx_lut_1": { + /* TX gain table, index 1 */ + "pa_gain": 0, + "mix_gain": 10, + "rf_power": -3, + "dig_gain": 0 + }, + "tx_lut_2": { + /* TX gain table, index 2 */ + "pa_gain": 0, + "mix_gain": 12, + "rf_power": 0, + "dig_gain": 0 + }, + "tx_lut_3": { + /* TX gain table, index 3 */ + "pa_gain": 1, + "mix_gain": 8, + "rf_power": 3, + "dig_gain": 0 + }, + "tx_lut_4": { + /* TX gain table, index 4 */ + "pa_gain": 1, + "mix_gain": 10, + "rf_power": 6, + "dig_gain": 0 + }, + "tx_lut_5": { + /* TX gain table, index 5 */ + "pa_gain": 1, + "mix_gain": 12, + "rf_power": 10, + "dig_gain": 0 + }, + "tx_lut_6": { + /* TX gain table, index 6 */ + "pa_gain": 1, + "mix_gain": 13, + "rf_power": 11, + "dig_gain": 0 + }, + "tx_lut_7": { + /* TX gain table, index 7 */ + "pa_gain": 2, + "mix_gain": 9, + "rf_power": 12, + "dig_gain": 0 + }, + "tx_lut_8": { + /* TX gain table, index 8 */ + "pa_gain": 1, + "mix_gain": 15, + "rf_power": 13, + "dig_gain": 0 + }, + "tx_lut_9": { + /* TX gain table, index 9 */ + "pa_gain": 2, + "mix_gain": 10, + "rf_power": 14, + "dig_gain": 0 + }, + "tx_lut_10": { + /* TX gain table, index 10 */ + "pa_gain": 2, + "mix_gain": 11, + "rf_power": 16, + "dig_gain": 0 + }, + "tx_lut_11": { + /* TX gain table, index 11 */ + "pa_gain": 3, + "mix_gain": 9, + "rf_power": 20, + "dig_gain": 0 + }, + "tx_lut_12": { + /* TX gain table, index 12 */ + "pa_gain": 3, + "mix_gain": 10, + "rf_power": 23, + "dig_gain": 0 + }, + "tx_lut_13": { + /* TX gain table, index 13 */ + "pa_gain": 3, + "mix_gain": 11, + "rf_power": 25, + "dig_gain": 0 + }, + "tx_lut_14": { + /* TX gain table, index 14 */ + "pa_gain": 3, + "mix_gain": 12, + "rf_power": 26, + "dig_gain": 0 + }, + "tx_lut_15": { + /* TX gain table, index 15 */ + "pa_gain": 3, + "mix_gain": 14, + "rf_power": 27, + "dig_gain": 0 + } + }, + + "gateway_conf": { + "gateway_ID": "AA555A0000000000", + /* change with default server address/ports, or overwrite in local_conf.json */ + "server_address": "localhost", + "serv_port_up": 1680, + "serv_port_down": 1680, + /* adjust the following parameters for your network */ + "keepalive_interval": 10, + "stat_interval": 30, + "push_timeout_ms": 100, + /* forward only valid packets */ + "forward_crc_valid": true, + "forward_crc_error": false, + "forward_crc_disabled": false + } +} + diff --git a/lora_pkt_fwd/inc/base64.h b/lora_pkt_fwd/inc/base64.h new file mode 100644 index 0000000..e57eb47 --- /dev/null +++ b/lora_pkt_fwd/inc/base64.h @@ -0,0 +1,62 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Base64 encoding & decoding library + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +#ifndef _BASE64_H +#define _BASE64_H + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <stdint.h> /* C99 types */ + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS PROTOTYPES ------------------------------------------ */ + +/** +@brief Encode binary data in Base64 string (no padding) +@param in pointer to a table of binary data +@param size number of bytes to be encoded to base64 +@param out pointer to a string where the function will output encoded data +@param max_len max length of the out string (including null char) +@return >=0 length of the resulting string (w/o null char), -1 for error +*/ +int bin_to_b64_nopad(const uint8_t * in, int size, char * out, int max_len); + +/** +@brief Decode Base64 string to binary data (no padding) +@param in string containing only base64 valid characters +@param size number of characters to be decoded from base64 (w/o null char) +@param out pointer to a data buffer where the function will output decoded data +@param out_max_len usable size of the output data buffer +@return >=0 number of bytes written to the data buffer, -1 for error +*/ +int b64_to_bin_nopad(const char * in, int size, uint8_t * out, int max_len); + +/* === derivative functions === */ + +/** +@brief Encode binary data in Base64 string (with added padding) +*/ +int bin_to_b64(const uint8_t * in, int size, char * out, int max_len); + +/** +@brief Decode Base64 string to binary data (remove padding if necessary) +*/ +int b64_to_bin(const char * in, int size, uint8_t * out, int max_len); + +#endif + +/* --- EOF ------------------------------------------------------------------ */ diff --git a/lora_pkt_fwd/inc/jitqueue.h b/lora_pkt_fwd/inc/jitqueue.h new file mode 100644 index 0000000..b674f75 --- /dev/null +++ b/lora_pkt_fwd/inc/jitqueue.h @@ -0,0 +1,156 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + LoRa concentrator : Just In Time TX scheduling queue + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Michael Coracin +*/ + + +#ifndef _LORA_PKTFWD_JIT_H +#define _LORA_PKTFWD_JIT_H + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <stdint.h> /* C99 types */ +#include <stdbool.h> /* bool type */ +#include <sys/time.h> /* timeval */ + +#include "loragw_hal.h" +#include "loragw_gps.h" + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC CONSTANTS ----------------------------------------------------- */ + +#define JIT_QUEUE_MAX 32 /* Maximum number of packets to be stored in JiT queue */ +#define JIT_NUM_BEACON_IN_QUEUE 3 /* Number of beacons to be loaded in JiT queue at any time */ + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC TYPES --------------------------------------------------------- */ + +enum jit_pkt_type_e { + JIT_PKT_TYPE_DOWNLINK_CLASS_A, + JIT_PKT_TYPE_DOWNLINK_CLASS_B, + JIT_PKT_TYPE_DOWNLINK_CLASS_C, + JIT_PKT_TYPE_BEACON +}; + +enum jit_error_e { + JIT_ERROR_OK, /* Packet ok to be sent */ + JIT_ERROR_TOO_LATE, /* Too late to send this packet */ + JIT_ERROR_TOO_EARLY, /* Too early to queue this packet */ + JIT_ERROR_FULL, /* Downlink queue is full */ + JIT_ERROR_EMPTY, /* Downlink queue is empty */ + JIT_ERROR_COLLISION_PACKET, /* A packet is already enqueued for this timeframe */ + JIT_ERROR_COLLISION_BEACON, /* A beacon is planned for this timeframe */ + JIT_ERROR_TX_FREQ, /* The required frequency for downlink is not supported */ + JIT_ERROR_TX_POWER, /* The required power for downlink is not supported */ + JIT_ERROR_GPS_UNLOCKED, /* GPS timestamp could not be used as GPS is unlocked */ + JIT_ERROR_INVALID /* Packet is invalid */ +}; + +struct jit_node_s { + /* API fields */ + struct lgw_pkt_tx_s pkt; /* TX packet */ + enum jit_pkt_type_e pkt_type; /* Packet type: Downlink, Beacon... */ + + /* Internal fields */ + uint32_t pre_delay; /* Amount of time before packet timestamp to be reserved */ + uint32_t post_delay; /* Amount of time after packet timestamp to be reserved (time on air) */ +}; + +struct jit_queue_s { + uint8_t num_pkt; /* Total number of packets in the queue (downlinks, beacons...) */ + uint8_t num_beacon; /* Number of beacons in the queue */ + struct jit_node_s nodes[JIT_QUEUE_MAX]; /* Nodes/packets array in the queue */ +}; + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS PROTOTYPES ------------------------------------------ */ + +/** +@brief Check if a JiT queue is full. + +@param queue[in] Just in Time queue to be checked. +@return true if queue is full, false otherwise. +*/ +bool jit_queue_is_full(struct jit_queue_s *queue); + +/** +@brief Check if a JiT queue is empty. + +@param queue[in] Just in Time queue to be checked. +@return true if queue is empty, false otherwise. +*/ +bool jit_queue_is_empty(struct jit_queue_s *queue); + +/** +@brief Initialize a Just in Time queue. + +@param queue[in] Just in Time queue to be initialized. Memory should have been allocated already. + +This function is used to reset every elements in the allocated queue. +*/ +void jit_queue_init(struct jit_queue_s *queue); + +/** +@brief Add a packet in a Just-in-Time queue + +@param queue[in/out] Just in Time queue in which the packet should be inserted +@param time[in] Current concentrator time +@param packet[in] Packet to be queued in JiT queue +@param pkt_type[in] Type of packet to be queued: Downlink, Beacon +@return success if the function was able to queue the packet + +This function is typically used when a packet is received from server for downlink. +It will check if packet can be queued, with several criterias. Once the packet is queued, it has to be +sent over the air. So all checks should happen before the packet being actually in the queue. +*/ +enum jit_error_e jit_enqueue(struct jit_queue_s *queue, struct timeval *time, struct lgw_pkt_tx_s *packet, enum jit_pkt_type_e pkt_type); + +/** +@brief Dequeue a packet from a Just-in-Time queue + +@param queue[in/out] Just in Time queue from which the packet should be removed +@param index[in] in the queue where to get the packet to be removed +@param packet[out] that was at index +@param pkt_type[out] Type of packet dequeued: Downlink, Beacon +@return success if the function was able to dequeue the packet + +This function is typically used when a packet is about to be placed on concentrator buffer for TX. +The index is generally got using the jit_peek function. +*/ +enum jit_error_e jit_dequeue(struct jit_queue_s *queue, int index, struct lgw_pkt_tx_s *packet, enum jit_pkt_type_e *pkt_type); + +/** +@brief Check if there is a packet soon to be sent from the JiT queue. + +@param queue[in] Just in Time queue to parse for peeking a packet +@param time[in] Current concentrator time +@param pkt_idx[out] Packet index which is soon to be dequeued. +@return success if the function was able to parse the queue. pkt_idx is set to -1 if no packet found. + +This function is typically used to check in JiT queue if there is a packet soon to be sent. +It search the packet with the highest priority in queue, and check if its timestamp is near +enough the current concentrator time. +*/ +enum jit_error_e jit_peek(struct jit_queue_s *queue, struct timeval *time, int *pkt_idx); + +/** +@brief Debug function to print the queue's content on console + +@param queue[in] Just in Time queue to be displayed +@param show_all[in] Indicates if empty nodes have to be displayed or not +*/ +void jit_print_queue(struct jit_queue_s *queue, bool show_all, int debug_level); + +#endif +/* --- EOF ------------------------------------------------------------------ */ diff --git a/lora_pkt_fwd/inc/parson.h b/lora_pkt_fwd/inc/parson.h new file mode 100644 index 0000000..2669a18 --- /dev/null +++ b/lora_pkt_fwd/inc/parson.h @@ -0,0 +1,222 @@ +/* + Parson ( http://kgabis.github.com/parson/ ) + Copyright (c) 2012 - 2016 Krzysztof Gabis + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +#ifndef parson_parson_h +#define parson_parson_h + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <stddef.h> /* size_t */ + +/* Types and enums */ +typedef struct json_object_t JSON_Object; +typedef struct json_array_t JSON_Array; +typedef struct json_value_t JSON_Value; + +enum json_value_type { + JSONError = -1, + JSONNull = 1, + JSONString = 2, + JSONNumber = 3, + JSONObject = 4, + JSONArray = 5, + JSONBoolean = 6 +}; +typedef int JSON_Value_Type; + +enum json_result_t { + JSONSuccess = 0, + JSONFailure = -1 +}; +typedef int JSON_Status; + +typedef void * (*JSON_Malloc_Function)(size_t); +typedef void (*JSON_Free_Function)(void *); + +/* Call only once, before calling any other function from parson API. If not called, malloc and free + from stdlib will be used for all allocations */ +void json_set_allocation_functions(JSON_Malloc_Function malloc_fun, JSON_Free_Function free_fun); + +/* Parses first JSON value in a file, returns NULL in case of error */ +JSON_Value * json_parse_file(const char *filename); + +/* Parses first JSON value in a file and ignores comments (/ * * / and //), + returns NULL in case of error */ +JSON_Value * json_parse_file_with_comments(const char *filename); + +/* Parses first JSON value in a string, returns NULL in case of error */ +JSON_Value * json_parse_string(const char *string); + +/* Parses first JSON value in a string and ignores comments (/ * * / and //), + returns NULL in case of error */ +JSON_Value * json_parse_string_with_comments(const char *string); + +/* Serialization */ +size_t json_serialization_size(const JSON_Value *value); /* returns 0 on fail */ +JSON_Status json_serialize_to_buffer(const JSON_Value *value, char *buf, size_t buf_size_in_bytes); +JSON_Status json_serialize_to_file(const JSON_Value *value, const char *filename); +char * json_serialize_to_string(const JSON_Value *value); + +/* Pretty serialization */ +size_t json_serialization_size_pretty(const JSON_Value *value); /* returns 0 on fail */ +JSON_Status json_serialize_to_buffer_pretty(const JSON_Value *value, char *buf, size_t buf_size_in_bytes); +JSON_Status json_serialize_to_file_pretty(const JSON_Value *value, const char *filename); +char * json_serialize_to_string_pretty(const JSON_Value *value); + +void json_free_serialized_string(char *string); /* frees string from json_serialize_to_string and json_serialize_to_string_pretty */ + +/* Comparing */ +int json_value_equals(const JSON_Value *a, const JSON_Value *b); + +/* Validation + This is *NOT* JSON Schema. It validates json by checking if object have identically + named fields with matching types. + For example schema {"name":"", "age":0} will validate + {"name":"Joe", "age":25} and {"name":"Joe", "age":25, "gender":"m"}, + but not {"name":"Joe"} or {"name":"Joe", "age":"Cucumber"}. + In case of arrays, only first value in schema is checked against all values in tested array. + Empty objects ({}) validate all objects, empty arrays ([]) validate all arrays, + null validates values of every type. + */ +JSON_Status json_validate(const JSON_Value *schema, const JSON_Value *value); + +/* + * JSON Object + */ +JSON_Value * json_object_get_value (const JSON_Object *object, const char *name); +const char * json_object_get_string (const JSON_Object *object, const char *name); +JSON_Object * json_object_get_object (const JSON_Object *object, const char *name); +JSON_Array * json_object_get_array (const JSON_Object *object, const char *name); +double json_object_get_number (const JSON_Object *object, const char *name); /* returns 0 on fail */ +int json_object_get_boolean(const JSON_Object *object, const char *name); /* returns -1 on fail */ + +/* dotget functions enable addressing values with dot notation in nested objects, + just like in structs or c++/java/c# objects (e.g. objectA.objectB.value). + Because valid names in JSON can contain dots, some values may be inaccessible + this way. */ +JSON_Value * json_object_dotget_value (const JSON_Object *object, const char *name); +const char * json_object_dotget_string (const JSON_Object *object, const char *name); +JSON_Object * json_object_dotget_object (const JSON_Object *object, const char *name); +JSON_Array * json_object_dotget_array (const JSON_Object *object, const char *name); +double json_object_dotget_number (const JSON_Object *object, const char *name); /* returns 0 on fail */ +int json_object_dotget_boolean(const JSON_Object *object, const char *name); /* returns -1 on fail */ + +/* Functions to get available names */ +size_t json_object_get_count(const JSON_Object *object); +const char * json_object_get_name (const JSON_Object *object, size_t index); + +/* Creates new name-value pair or frees and replaces old value with a new one. + * json_object_set_value does not copy passed value so it shouldn't be freed afterwards. */ +JSON_Status json_object_set_value(JSON_Object *object, const char *name, JSON_Value *value); +JSON_Status json_object_set_string(JSON_Object *object, const char *name, const char *string); +JSON_Status json_object_set_number(JSON_Object *object, const char *name, double number); +JSON_Status json_object_set_boolean(JSON_Object *object, const char *name, int boolean); +JSON_Status json_object_set_null(JSON_Object *object, const char *name); + +/* Works like dotget functions, but creates whole hierarchy if necessary. + * json_object_dotset_value does not copy passed value so it shouldn't be freed afterwards. */ +JSON_Status json_object_dotset_value(JSON_Object *object, const char *name, JSON_Value *value); +JSON_Status json_object_dotset_string(JSON_Object *object, const char *name, const char *string); +JSON_Status json_object_dotset_number(JSON_Object *object, const char *name, double number); +JSON_Status json_object_dotset_boolean(JSON_Object *object, const char *name, int boolean); +JSON_Status json_object_dotset_null(JSON_Object *object, const char *name); + +/* Frees and removes name-value pair */ +JSON_Status json_object_remove(JSON_Object *object, const char *name); + +/* Works like dotget function, but removes name-value pair only on exact match. */ +JSON_Status json_object_dotremove(JSON_Object *object, const char *key); + +/* Removes all name-value pairs in object */ +JSON_Status json_object_clear(JSON_Object *object); + +/* + *JSON Array + */ +JSON_Value * json_array_get_value (const JSON_Array *array, size_t index); +const char * json_array_get_string (const JSON_Array *array, size_t index); +JSON_Object * json_array_get_object (const JSON_Array *array, size_t index); +JSON_Array * json_array_get_array (const JSON_Array *array, size_t index); +double json_array_get_number (const JSON_Array *array, size_t index); /* returns 0 on fail */ +int json_array_get_boolean(const JSON_Array *array, size_t index); /* returns -1 on fail */ +size_t json_array_get_count (const JSON_Array *array); + +/* Frees and removes value at given index, does nothing and returns JSONFailure if index doesn't exist. + * Order of values in array may change during execution. */ +JSON_Status json_array_remove(JSON_Array *array, size_t i); + +/* Frees and removes from array value at given index and replaces it with given one. + * Does nothing and returns JSONFailure if index doesn't exist. + * json_array_replace_value does not copy passed value so it shouldn't be freed afterwards. */ +JSON_Status json_array_replace_value(JSON_Array *array, size_t i, JSON_Value *value); +JSON_Status json_array_replace_string(JSON_Array *array, size_t i, const char* string); +JSON_Status json_array_replace_number(JSON_Array *array, size_t i, double number); +JSON_Status json_array_replace_boolean(JSON_Array *array, size_t i, int boolean); +JSON_Status json_array_replace_null(JSON_Array *array, size_t i); + +/* Frees and removes all values from array */ +JSON_Status json_array_clear(JSON_Array *array); + +/* Appends new value at the end of array. + * json_array_append_value does not copy passed value so it shouldn't be freed afterwards. */ +JSON_Status json_array_append_value(JSON_Array *array, JSON_Value *value); +JSON_Status json_array_append_string(JSON_Array *array, const char *string); +JSON_Status json_array_append_number(JSON_Array *array, double number); +JSON_Status json_array_append_boolean(JSON_Array *array, int boolean); +JSON_Status json_array_append_null(JSON_Array *array); + +/* + *JSON Value + */ +JSON_Value * json_value_init_object (void); +JSON_Value * json_value_init_array (void); +JSON_Value * json_value_init_string (const char *string); /* copies passed string */ +JSON_Value * json_value_init_number (double number); +JSON_Value * json_value_init_boolean(int boolean); +JSON_Value * json_value_init_null (void); +JSON_Value * json_value_deep_copy (const JSON_Value *value); +void json_value_free (JSON_Value *value); + +JSON_Value_Type json_value_get_type (const JSON_Value *value); +JSON_Object * json_value_get_object (const JSON_Value *value); +JSON_Array * json_value_get_array (const JSON_Value *value); +const char * json_value_get_string (const JSON_Value *value); +double json_value_get_number (const JSON_Value *value); +int json_value_get_boolean(const JSON_Value *value); + +/* Same as above, but shorter */ +JSON_Value_Type json_type (const JSON_Value *value); +JSON_Object * json_object (const JSON_Value *value); +JSON_Array * json_array (const JSON_Value *value); +const char * json_string (const JSON_Value *value); +double json_number (const JSON_Value *value); +int json_boolean(const JSON_Value *value); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lora_pkt_fwd/inc/timersync.h b/lora_pkt_fwd/inc/timersync.h new file mode 100644 index 0000000..497e538 --- /dev/null +++ b/lora_pkt_fwd/inc/timersync.h @@ -0,0 +1,32 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + LoRa concentrator : Just In Time TX scheduling queue + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Michael Coracin +*/ + + +#ifndef _LORA_PKTFWD_TIMERSYNC_H +#define _LORA_PKTFWD_TIMERSYNC_H + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <sys/time.h> /* timeval */ + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS PROTOTYPES ------------------------------------------ */ + +int get_concentrator_time(struct timeval *concent_time, struct timeval unix_time); + +void thread_timersync(void); + +#endif diff --git a/lora_pkt_fwd/inc/trace.h b/lora_pkt_fwd/inc/trace.h new file mode 100644 index 0000000..a067851 --- /dev/null +++ b/lora_pkt_fwd/inc/trace.h @@ -0,0 +1,37 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + LoRa concentrator : Packet Forwarder trace helpers + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Michael Coracin +*/ + + +#ifndef _LORA_PKTFWD_TRACE_H +#define _LORA_PKTFWD_TRACE_H + +#define DEBUG_PKT_FWD 0 +#define DEBUG_JIT 0 +#define DEBUG_JIT_ERROR 1 +#define DEBUG_TIMERSYNC 0 +#define DEBUG_BEACON 0 +#define DEBUG_LOG 1 + +#define MSG(args...) printf(args) /* message that is destined to the user */ +#define MSG_DEBUG(FLAG, fmt, ...) \ + do { \ + if (FLAG) \ + fprintf(stdout, "%s:%d:%s(): " fmt, __FILE__, __LINE__, __FUNCTION__, ##__VA_ARGS__); \ + } while (0) + + + +#endif +/* --- EOF ------------------------------------------------------------------ */ diff --git a/lora_pkt_fwd/local_conf.json b/lora_pkt_fwd/local_conf.json new file mode 100644 index 0000000..cf6ff56 --- /dev/null +++ b/lora_pkt_fwd/local_conf.json @@ -0,0 +1,7 @@ +{ +/* Put there parameters that are different for each gateway (eg. pointing one gateway to a test server while the others stay in production) */ +/* Settings defined in global_conf will be overwritten by those in local_conf */ + "gateway_conf": { + "gateway_ID": "AA555A0000000101" /* you must pick a unique 64b number for each gateway (represented by an hex string) */ + } +} diff --git a/lora_pkt_fwd/readme.md b/lora_pkt_fwd/readme.md new file mode 100644 index 0000000..d934154 --- /dev/null +++ b/lora_pkt_fwd/readme.md @@ -0,0 +1,328 @@ + / _____) _ | | + ( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | + (______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Lora Gateway packet forwarder +============================= + +1. Introduction +---------------- + +The packet forwarder is a program running on the host of a Lora gateway that +forwards RF packets receive by the concentrator to a server through a IP/UDP +link, and emits RF packets that are sent by the server. It can also emit a +network-wide GPS-synchronous beacon signal used for coordinating all nodes of +the network. + +To learn more about the network protocol between the gateway and the server, +please read the PROTOCOL.TXT document. + +2. System schematic and definitions +------------------------------------ + + ((( Y ))) + | + | + +- -|- - - - - - - - - - - - -+ xxxxxxxxxxxx +--------+ + |+--+-----------+ +------+| xx x x xxx | | + || | | || xx Internet xx | | + || Concentrator |<----+ Host |<------xx or xx-------->| | + || | SPI | || xx Intranet xx | Server | + |+--------------+ +------+| xxxx x xxxx | | + | ^ ^ | xxxxxxxx | | + | | PPS +-----+ NMEA | | | | + | +------| GPS |-------+ | +--------+ + | +-----+ | + | | + | Gateway | + +- - - - - - - - - - - - - - -+ + +Concentrator: radio RX/TX board, based on Semtech multichannel modems (SX130x), +transceivers (SX135x) and/or low-power stand-alone modems (SX127x). + +Host: embedded computer on which the packet forwarder is run. Drives the +concentrator through a SPI link. + +Gateway: a device composed of at least one radio concentrator, a host, some +network connection to the internet or a private network (Ethernet, 3G, Wifi, +microwave link), and optionally a GPS receiver for synchronization. + +Server: an abstract computer that will process the RF packets received and +forwarded by the gateway, and issue RF packets in response that the gateway +will have to emit. + + +3. Dependencies +---------------- + +This program uses the Parson library (http://kgabis.github.com/parson/) by +Krzysztof Gabis for JSON parsing. +Many thanks to him for that very practical and well written library. + +This program is statically linked with the libloragw Lora concentrator library. +It was tested with v1.3.0 of the library but should work with any later +version provided the API is v1 or a later backward-compatible API. +Data structures of the received packets are accessed by name (ie. not at a +binary level) so new functionalities can be added to the API without affecting +that program at all. + +This program follows the v1.3 version of the gateway-to-server protocol. + +The last dependency is the hardware concentrator (based on FPGA or SX130x +chips) that must be matched with the proper version of the HAL. + +4. Usage +--------- + +* Pick the global_conf.json file from cfg/ directory that fit with your +platform, region and feature need. +* Update the JSON configuration (global and local) files, as explained below. +* For IoT Starter Kit only, run: + ./reset_lgw.sh stop + ./reset_lgw.sh start +* Run: + ./update_gwid.sh local_conf.json (OPTIONAL) + ./lora_pkt_fwd + +To stop the application, press Ctrl+C. +Unless it is manually stopped or encounter a critical error, the program will +run forever. + +There are no command line launch options. + +The way the program takes configuration files into account is the following: + * if there is a debug_conf.json parse it, others are ignored + * if there is a global_conf.json parse it, look for the next file + * if there is a local_conf.json parse it +If some parameters are defined in both global and local configuration files, +the local definition overwrites the global definition. + +The global configuration file should be exactly the same throughout your +network, contain all global parameters (parameters for "sensor" radio +channels) and preferably default "safe" values for parameters that are +specific for each gateway (eg. specify a default MAC address). + +As some of the parameters (like 'rssi_offset', 'tx_lut_*') are board dependant, +several flavours of the global_conf.json file are provided in the cfg/ +directory. +* global_conf.json.PCB_E286.EU868.*: to be used for Semtech reference design + board with PCB name PCB_E286 (also called Gateway Board v1.0 (no FPGA)). + Configured for Europe 868MHz channels. +* global_conf.json.PCB_E336.EU868.*:to be used for Semtech reference design + board with PCB name PCB_E336 (also called Gateway Board v1.5 (with FPGA)). + Configured for Europe 868MHz channels. +* global_conf.json.US902.*: to be used for Semtech reference design v1.0 or + v1.5. (No calibration done for RSSI offset and TX gains yet). + Configured for US 902MHz channels. + +Beside board related flavours, there are "features" flavours named "basic", +"gps", "beacon". +* global_conf.json.*.basic: to be used for basic packet forwarder usage, with +no GPS. +* global_conf.json.*.gps: to be used when the platform has a GPS receiver. +* global_conf.json.*.beacon: to be used when the platform has a GPS receiver +and we want the packet forwarder to emit beacons for synchronized networks. + +Rename the one you need to global_conf.json before launching the packet +forwarder. + +The local configuration file should contain parameters that are specific to +each gateway (eg. MAC address, frequency for backhaul radio channels). + +In each configuration file, the program looks for a JSON object named +"SX1301_conf" that should contain the parameters for the Lora concentrator +board (RF channels definition, modem parameters, etc) and another JSON object +called "gateway_conf" that should contain the gateway parameters (gateway MAC +address, IP address of the server, keep-alive time, etc). + +To learn more about the JSON configuration format, read the provided JSON +files and the libloragw API documentation. + +Every X seconds (parameter settable in the configuration files) the program +display statistics on the RF packets received and sent, and the network +datagrams received and sent. +The program also send some statistics to the server in JSON format. + +5. "Just-In-Time" downlink scheduling +------------------------------------- + +The LoRa concentrator can have only one TX packet programmed for departure at a +time. The actual departure of a downlink packet will be done based on its +timestamp, when the concentrator internal counter reaches timestamp’s value. +The departure of a beacon will be done based on a GPS PPS event. +It may happen that, due to network variable latency, the gateway receives one +or many downlink packets from the server while a TX is already programmed in the +concentrator. The packet forwarder has to store and order incoming downlink +packets (in a queue), so that they can all be programmed in the concentrator at +the proper time and sent over the air. +Possible failures that may occur and that have to be reported to the server are: +- It is too early or too late to send a given packet +- A packet collides with another packet already queued +- A packet collides with a beacon +- TX RF parameters (frequency, power) are not supported by gateway +- Gateway’s GPS is unlocked, so cannot process Class B downlink +It is called "Just-in-Time" (JiT) scheduling, because the packet forwarder will +program a downlink or a beacon packet in the concentrator just before it has to +be sent over the air. +Another benefit of JiT is to optimize the gateway downlink capacity by avoiding +to keep the concentrator TX buffer busy for too long. + +In order to achieve "Just-in-Time" scheduling, the following software elements +have been added: +- A JiT queue, with associated enqueue/peek/dequeue functions and packet +acceptance criterias. It is where downlink packets are stored, waiting to be +sent. +- A JiT thread, which regularly checks if there is a packet in the JiT queue +ready to be programmed in the concentrator, based on current concentrator +internal time. +- A Timer synchronization thread to keep the concentrator clock and Unix clock +synchronized so that host processor can determine if a packet with a given +timestamp can be programmed in the concentrator or not. + +5.1. Concentrator vs Unix time synchronization + +In order for the host to know if an incoming downlink packet can or cannot be +queued in JiT queue for later transmission, it has to check if the timestamp of +the packet designates a time later than the current concentrator counter or if +it is already too late to be passed to the concentrator. +In order to get current concentrator time, we can use the lgw_get_trigcnt() HAL +function. The problem is that the sample register used to read this value can be +configured in 2 different ways: + - Real time mode: when GPS is disabled, the value read in sample register is + the actual concentrator counter value. + - PPS mode: when GPS is enabled, the value read in sample register is the + value that the concentrator counter had when last GPS’s PPS occurred. So + this changes every second only. +As in our case GPS is enabled (LGW_GPS_EN==1), we need to have a way to get the +actual concentrator current time, at any time. +For this, a new thread has been added to the packet forwarder (thread_timersync) +which will regularly: + - Disable GPS mode of SX1301 counter sampler + - Get current Unix time + - Get current SX1301 counter + - Compute the offset between Unix and SX1301 clocks and store it + - Re-enable GPS mode of SX1301 counter sampler +Then a new function has been added to estimate the current concentrator counter +at any time based on the current Unix time and offset computed by the timersync +thread. + +In addition to this, the Concentrator vs Unix time synchronization is used by +the JiT thread to determine if a packet in the JiT queue has to be sent to the +concentrator for transmission. +So basically it is used for queueing and dequeuing packets to/from the JiT queue. + +5.2. Concentrator vs GPS time synchronization + +There are 2 cases for which we need to convert a GPS time to concentrator +counter: + - Class B downlink: when the “time” field of JSON “txpk” is filled instead + of the “tmst” field, we need to be able to determine if the packet can be + queued in JiT queue or not, based on its corresponding concentrator + counter value. + Note: even if a Class-B downlink is given with a GPS timestamp, the + concentrator TX mode is configured as “TIMESTAMP”, and not “ON_GPS”. So + at the end, it is the counter value which will be used for transmission. + - Beacons: beacons transmission time is based on GPS clock, and the + concentrator TX mode is configured as “ON_GPS” for accurate beacon + transmission on GPS PPS event. In this case, the concentrator does not + need the packet counter to be set. But, as the JiT thread decides if a + packet has to be peeked or not, based on its concentrator counter, we need + to have the beacon packet counter set (see next chapter for more details + on JiT scheduling). +We also need to convert a SX1301 counter value to GPS UTC time when we receive +an uplink, in order to fill the “time” field of JSON “rxpk” structure. + +5.3. TX scheduling + +The JiT queue implemented is a static array of nodes, where each node contains: + - the downlink packet, with its type (beacon, downlink class A, B or C) + - a “pre delay” which depends on packet type (BEACON_GUARD, TX_START_DELAY…) + - a “post delay” which depends on packet type (“time on air” of this packet + computed based on its size, datarate and coderate, or BEACON_RESERVED) + +Several functions are implemented to manipulate this queue or get info from it: + - init: initialize array with default values + - is full / is empty: gives queue status + - enqueue: checks if the given packet can be queued or not, based on several + criteria’s + - peek: checks if the queue contains a packet that must be passed + immediately to the concentrator for transmission and returns corresponding + index if any. + - dequeue: actually removes from the queue the packet at index given by peek + function + +The queue is always kept sorted on ascending timestamp order. + +The JiT thread will regularly check in the JiT queue if there is a packet to be +sent soon. If a packet is matching, it is dequeued and programmed in the +concentrator TX buffer. + +5.4. Fine tuning parameters + +There are few parameters of the JiT queue which could be tweaked to adapt to +different system constraints. + + - inc/jitqueue.h: + JIT_QUEUE_MAX: The maximum number of nodes in the queue. + - src/jitqueue.c: + TX_JIT_DELAY: The number of milliseconds a packet is programmed in the + concentrator TX buffer before its actual departure time. + TX_MARGIN_DELAY: Packet collision check margin + +6. License +----------- + +Copyright (C) 2013, SEMTECH S.A. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +* Neither the name of the Semtech corporation nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL SEMTECH S.A. BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +6. License for Parson library +------------------------------ + +Parson ( http://kgabis.github.com/parson/ ) +Copyright (C) 2012 Krzysztof Gabis + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + +*EOF* diff --git a/lora_pkt_fwd/src/base64.c b/lora_pkt_fwd/src/base64.c new file mode 100644 index 0000000..8ba908e --- /dev/null +++ b/lora_pkt_fwd/src/base64.c @@ -0,0 +1,308 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Base64 encoding & decoding library + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> + +#include "base64.h" + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define CRIT(a) fprintf(stderr, "\nCRITICAL file:%s line:%u msg:%s\n", __FILE__, __LINE__,a);exit(EXIT_FAILURE) + +//#define DEBUG(args...) fprintf(stderr,"debug: " args) /* diagnostic message that is destined to the user */ +#define DEBUG(args...) + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MODULE-WIDE VARIABLES ---------------------------------------- */ + +static char code_62 = '+'; /* RFC 1421 standard character for code 62 */ +static char code_63 = '/'; /* RFC 1421 standard character for code 63 */ +static char code_pad = '='; /* RFC 1421 padding character if padding */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DECLARATION ---------------------------------------- */ + +/** +@brief Convert a code in the range 0-63 to an ASCII character +*/ +char code_to_char(uint8_t x); + +/** +@brief Convert an ASCII character to a code in the range 0-63 +*/ +uint8_t char_to_code(char x); + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DEFINITION ----------------------------------------- */ + +char code_to_char(uint8_t x) { + if (x <= 25) { + return 'A' + x; + } else if ((x >= 26) && (x <= 51)) { + return 'a' + (x-26); + } else if ((x >= 52) && (x <= 61)) { + return '0' + (x-52); + } else if (x == 62) { + return code_62; + } else if (x == 63) { + return code_63; + } else { + DEBUG("ERROR: %i IS OUT OF RANGE 0-63 FOR BASE64 ENCODING\n", x); + exit(EXIT_FAILURE); + } //TODO: improve error management +} + +uint8_t char_to_code(char x) { + if ((x >= 'A') && (x <= 'Z')) { + return (uint8_t)x - (uint8_t)'A'; + } else if ((x >= 'a') && (x <= 'z')) { + return (uint8_t)x - (uint8_t)'a' + 26; + } else if ((x >= '0') && (x <= '9')) { + return (uint8_t)x - (uint8_t)'0' + 52; + } else if (x == code_62) { + return 62; + } else if (x == code_63) { + return 63; + } else { + DEBUG("ERROR: %c (0x%x) IS INVALID CHARACTER FOR BASE64 DECODING\n", x, x); + exit(EXIT_FAILURE); + } //TODO: improve error management +} + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS DEFINITION ------------------------------------------ */ + +int bin_to_b64_nopad(const uint8_t * in, int size, char * out, int max_len) { + int i; + int result_len; /* size of the result */ + int full_blocks; /* number of 3 unsigned chars / 4 characters blocks */ + int last_bytes; /* number of unsigned chars <3 in the last block */ + int last_chars; /* number of characters <4 in the last block */ + uint32_t b; + + /* check input values */ + if ((out == NULL) || (in == NULL)) { + DEBUG("ERROR: NULL POINTER AS OUTPUT IN BIN_TO_B64\n"); + return -1; + } + if (size == 0) { + *out = 0; /* null string */ + return 0; + } + + /* calculate the number of base64 'blocks' */ + full_blocks = size / 3; + last_bytes = size % 3; + switch (last_bytes) { + case 0: /* no byte left to encode */ + last_chars = 0; + break; + case 1: /* 1 byte left to encode -> +2 chars */ + last_chars = 2; + break; + case 2: /* 2 bytes left to encode -> +3 chars */ + last_chars = 3; + break; + default: + CRIT("switch default that should not be possible"); + } + + /* check if output buffer is big enough */ + result_len = (4*full_blocks) + last_chars; + if (max_len < (result_len + 1)) { /* 1 char added for string terminator */ + DEBUG("ERROR: OUTPUT BUFFER TOO SMALL IN BIN_TO_B64\n"); + return -1; + } + + /* process all the full blocks */ + for (i=0; i < full_blocks; ++i) { + b = (0xFF & in[3*i] ) << 16; + b |= (0xFF & in[3*i + 1]) << 8; + b |= 0xFF & in[3*i + 2]; + out[4*i + 0] = code_to_char((b >> 18) & 0x3F); + out[4*i + 1] = code_to_char((b >> 12) & 0x3F); + out[4*i + 2] = code_to_char((b >> 6 ) & 0x3F); + out[4*i + 3] = code_to_char( b & 0x3F); + } + + /* process the last 'partial' block and terminate string */ + i = full_blocks; + if (last_chars == 0) { + out[4*i] = 0; /* null character to terminate string */ + } else if (last_chars == 2) { + b = (0xFF & in[3*i] ) << 16; + out[4*i + 0] = code_to_char((b >> 18) & 0x3F); + out[4*i + 1] = code_to_char((b >> 12) & 0x3F); + out[4*i + 2] = 0; /* null character to terminate string */ + } else if (last_chars == 3) { + b = (0xFF & in[3*i] ) << 16; + b |= (0xFF & in[3*i + 1]) << 8; + out[4*i + 0] = code_to_char((b >> 18) & 0x3F); + out[4*i + 1] = code_to_char((b >> 12) & 0x3F); + out[4*i + 2] = code_to_char((b >> 6 ) & 0x3F); + out[4*i + 3] = 0; /* null character to terminate string */ + } + + return result_len; +} + +int b64_to_bin_nopad(const char * in, int size, uint8_t * out, int max_len) { + int i; + int result_len; /* size of the result */ + int full_blocks; /* number of 3 unsigned chars / 4 characters blocks */ + int last_chars; /* number of characters <4 in the last block */ + int last_bytes; /* number of unsigned chars <3 in the last block */ + uint32_t b; + ; + + /* check input values */ + if ((out == NULL) || (in == NULL)) { + DEBUG("ERROR: NULL POINTER AS OUTPUT OR INPUT IN B64_TO_BIN\n"); + return -1; + } + if (size == 0) { + return 0; + } + + /* calculate the number of base64 'blocks' */ + full_blocks = size / 4; + last_chars = size % 4; + switch (last_chars) { + case 0: /* no char left to decode */ + last_bytes = 0; + break; + case 1: /* only 1 char left is an error */ + DEBUG("ERROR: ONLY ONE CHAR LEFT IN B64_TO_BIN\n"); + return -1; + case 2: /* 2 chars left to decode -> +1 byte */ + last_bytes = 1; + break; + case 3: /* 3 chars left to decode -> +2 bytes */ + last_bytes = 2; + break; + default: + CRIT("switch default that should not be possible"); + } + + /* check if output buffer is big enough */ + result_len = (3*full_blocks) + last_bytes; + if (max_len < result_len) { + DEBUG("ERROR: OUTPUT BUFFER TOO SMALL IN B64_TO_BIN\n"); + return -1; + } + + /* process all the full blocks */ + for (i=0; i < full_blocks; ++i) { + b = (0x3F & char_to_code(in[4*i] )) << 18; + b |= (0x3F & char_to_code(in[4*i + 1])) << 12; + b |= (0x3F & char_to_code(in[4*i + 2])) << 6; + b |= 0x3F & char_to_code(in[4*i + 3]); + out[3*i + 0] = (b >> 16) & 0xFF; + out[3*i + 1] = (b >> 8 ) & 0xFF; + out[3*i + 2] = b & 0xFF; + } + + /* process the last 'partial' block */ + i = full_blocks; + if (last_bytes == 1) { + b = (0x3F & char_to_code(in[4*i] )) << 18; + b |= (0x3F & char_to_code(in[4*i + 1])) << 12; + out[3*i + 0] = (b >> 16) & 0xFF; + if (((b >> 12) & 0x0F) != 0) { + DEBUG("WARNING: last character contains unusable bits\n"); + } + } else if (last_bytes == 2) { + b = (0x3F & char_to_code(in[4*i] )) << 18; + b |= (0x3F & char_to_code(in[4*i + 1])) << 12; + b |= (0x3F & char_to_code(in[4*i + 2])) << 6; + out[3*i + 0] = (b >> 16) & 0xFF; + out[3*i + 1] = (b >> 8 ) & 0xFF; + if (((b >> 6) & 0x03) != 0) { + DEBUG("WARNING: last character contains unusable bits\n"); + } + } + + return result_len; +} + +int bin_to_b64(const uint8_t * in, int size, char * out, int max_len) { + int ret; + + ret = bin_to_b64_nopad(in, size, out, max_len); + + if (ret == -1) { + return -1; + } + switch (ret%4) { + case 0: /* nothing to do */ + return ret; + case 1: + DEBUG("ERROR: INVALID UNPADDED BASE64 STRING\n"); + return -1; + case 2: /* 2 chars in last block, must add 2 padding char */ + if (max_len >= (ret + 2 + 1)) { + out[ret] = code_pad; + out[ret+1] = code_pad; + out[ret+2] = 0; + return ret+2; + } else { + DEBUG("ERROR: not enough room to add padding in bin_to_b64\n"); + return -1; + } + case 3: /* 3 chars in last block, must add 1 padding char */ + if (max_len >= (ret + 1 + 1)) { + out[ret] = code_pad; + out[ret+1] = 0; + return ret+1; + } else { + DEBUG("ERROR: not enough room to add padding in bin_to_b64\n"); + return -1; + } + default: + CRIT("switch default that should not be possible"); + } +} + +int b64_to_bin(const char * in, int size, uint8_t * out, int max_len) { + if (in == NULL) { + DEBUG("ERROR: NULL POINTER AS OUTPUT OR INPUT IN B64_TO_BIN\n"); + return -1; + } + if ((size%4 == 0) && (size >= 4)) { /* potentially padded Base64 */ + if (in[size-2] == code_pad) { /* 2 padding char to ignore */ + return b64_to_bin_nopad(in, size-2, out, max_len); + } else if (in[size-1] == code_pad) { /* 1 padding char to ignore */ + return b64_to_bin_nopad(in, size-1, out, max_len); + } else { /* no padding to ignore */ + return b64_to_bin_nopad(in, size, out, max_len); + } + } else { /* treat as unpadded Base64 */ + return b64_to_bin_nopad(in, size, out, max_len); + } +} + + +/* --- EOF ------------------------------------------------------------------ */ diff --git a/lora_pkt_fwd/src/jitqueue.c b/lora_pkt_fwd/src/jitqueue.c new file mode 100644 index 0000000..dbde8d2 --- /dev/null +++ b/lora_pkt_fwd/src/jitqueue.c @@ -0,0 +1,465 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + LoRa concentrator : Just In Time TX scheduling queue + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Michael Coracin +*/ + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#define _GNU_SOURCE /* needed for qsort_r to be defined */ +#include <stdlib.h> /* qsort_r */ +#include <stdio.h> /* printf, fprintf, snprintf, fopen, fputs */ +#include <string.h> /* memset, memcpy */ +#include <pthread.h> +#include <assert.h> +#include <math.h> + +#include "trace.h" +#include "jitqueue.h" + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS & TYPES -------------------------------------------- */ +#define TX_START_DELAY 1500 /* microseconds */ + /* TODO: get this value from HAL? */ +#define TX_MARGIN_DELAY 1000 /* Packet overlap margin in microseconds */ + /* TODO: How much margin should we take? */ +#define TX_JIT_DELAY 30000 /* Pre-delay to program packet for TX in microseconds */ +#define TX_MAX_ADVANCE_DELAY ((JIT_NUM_BEACON_IN_QUEUE + 1) * 128 * 1E6) /* Maximum advance delay accepted for a TX packet, compared to current time */ + +#define BEACON_GUARD 3000000 /* Interval where no ping slot can be placed, + to ensure beacon can be sent */ +#define BEACON_RESERVED 2120000 /* Time on air of the beacon, with some margin */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE VARIABLES (GLOBAL) ------------------------------------------- */ +static pthread_mutex_t mx_jit_queue = PTHREAD_MUTEX_INITIALIZER; /* control access to JIT queue */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DEFINITION ----------------------------------------- */ + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS DEFINITION ----------------------------------------- */ + +bool jit_queue_is_full(struct jit_queue_s *queue) { + bool result; + + pthread_mutex_lock(&mx_jit_queue); + + result = (queue->num_pkt == JIT_QUEUE_MAX)?true:false; + + pthread_mutex_unlock(&mx_jit_queue); + + return result; +} + +bool jit_queue_is_empty(struct jit_queue_s *queue) { + bool result; + + pthread_mutex_lock(&mx_jit_queue); + + result = (queue->num_pkt == 0)?true:false; + + pthread_mutex_unlock(&mx_jit_queue); + + return result; +} + +void jit_queue_init(struct jit_queue_s *queue) { + int i; + + pthread_mutex_lock(&mx_jit_queue); + + memset(queue, 0, sizeof(*queue)); + for (i=0; i<JIT_QUEUE_MAX; i++) { + queue->nodes[i].pre_delay = 0; + queue->nodes[i].post_delay = 0; + } + + pthread_mutex_unlock(&mx_jit_queue); +} + +int compare(const void *a, const void *b, void *arg) +{ + struct jit_node_s *p = (struct jit_node_s *)a; + struct jit_node_s *q = (struct jit_node_s *)b; + int *counter = (int *)arg; + int p_count, q_count; + + p_count = p->pkt.count_us; + q_count = q->pkt.count_us; + + if (p_count > q_count) + *counter = *counter + 1; + + return p_count - q_count; +} + +void jit_sort_queue(struct jit_queue_s *queue) { + int counter = 0; + + if (queue->num_pkt == 0) { + return; + } + + MSG_DEBUG(DEBUG_JIT, "sorting queue in ascending order packet timestamp - queue size:%u\n", queue->num_pkt); + qsort_r(queue->nodes, queue->num_pkt, sizeof(queue->nodes[0]), compare, &counter); + MSG_DEBUG(DEBUG_JIT, "sorting queue done - swapped:%d\n", counter); +} + +bool jit_collision_test(uint32_t p1_count_us, uint32_t p1_pre_delay, uint32_t p1_post_delay, uint32_t p2_count_us, uint32_t p2_pre_delay, uint32_t p2_post_delay) { + if (((p1_count_us - p2_count_us) <= (p1_pre_delay + p2_post_delay + TX_MARGIN_DELAY)) || + ((p2_count_us - p1_count_us) <= (p2_pre_delay + p1_post_delay + TX_MARGIN_DELAY))) { + return true; + } else { + return false; + } +} + +enum jit_error_e jit_enqueue(struct jit_queue_s *queue, struct timeval *time, struct lgw_pkt_tx_s *packet, enum jit_pkt_type_e pkt_type) { + int i = 0; + uint32_t time_us = time->tv_sec * 1000000UL + time->tv_usec; /* convert time in µs */ + uint32_t packet_post_delay = 0; + uint32_t packet_pre_delay = 0; + uint32_t target_pre_delay = 0; + enum jit_error_e err_collision; + uint32_t asap_count_us; + + MSG_DEBUG(DEBUG_JIT, "Current concentrator time is %u, pkt_type=%d\n", time_us, pkt_type); + + if (packet == NULL) { + MSG_DEBUG(DEBUG_JIT_ERROR, "ERROR: invalid parameter\n"); + return JIT_ERROR_INVALID; + } + + if (jit_queue_is_full(queue)) { + MSG_DEBUG(DEBUG_JIT_ERROR, "ERROR: cannot enqueue packet, JIT queue is full\n"); + return JIT_ERROR_FULL; + } + + /* Compute packet pre/post delays depending on packet's type */ + switch (pkt_type) { + case JIT_PKT_TYPE_DOWNLINK_CLASS_A: + case JIT_PKT_TYPE_DOWNLINK_CLASS_B: + case JIT_PKT_TYPE_DOWNLINK_CLASS_C: + packet_pre_delay = TX_START_DELAY + TX_JIT_DELAY; + packet_post_delay = lgw_time_on_air(packet) * 1000UL; /* in us */ + break; + case JIT_PKT_TYPE_BEACON: + /* As defined in LoRaWAN spec */ + packet_pre_delay = TX_START_DELAY + BEACON_GUARD + TX_JIT_DELAY; + packet_post_delay = BEACON_RESERVED; + break; + default: + break; + } + + pthread_mutex_lock(&mx_jit_queue); + + /* An immediate downlink becomes a timestamped downlink "ASAP" */ + /* Set the packet count_us to the first available slot */ + if (pkt_type == JIT_PKT_TYPE_DOWNLINK_CLASS_C) { + /* change tx_mode to timestamped */ + packet->tx_mode = TIMESTAMPED; + + /* Search for the ASAP timestamp to be given to the packet */ + asap_count_us = time_us + 1E6; /* TODO: Take 1 second margin, to be refined */ + if (queue->num_pkt == 0) { + /* If the jit queue is empty, we can insert this packet */ + MSG_DEBUG(DEBUG_JIT, "DEBUG: insert IMMEDIATE downlink, first in JiT queue (count_us=%u)\n", asap_count_us); + } else { + /* Else we can try to insert it: + - ASAP meaning NOW + MARGIN + - at the last index of the queue + - between 2 downlinks in the queue + */ + + /* First, try if the ASAP time collides with an already enqueued downlink */ + for (i=0; i<queue->num_pkt; i++) { + if (jit_collision_test(asap_count_us, packet_pre_delay, packet_post_delay, queue->nodes[i].pkt.count_us, queue->nodes[i].pre_delay, queue->nodes[i].post_delay) == true) { + MSG_DEBUG(DEBUG_JIT, "DEBUG: cannot insert IMMEDIATE downlink at count_us=%u, collides with %u (index=%d)\n", asap_count_us, queue->nodes[i].pkt.count_us, i); + break; + } + } + if (i == queue->num_pkt) { + /* No collision with ASAP time, we can insert it */ + MSG_DEBUG(DEBUG_JIT, "DEBUG: insert IMMEDIATE downlink ASAP at %u (no collision)\n", asap_count_us); + } else { + /* Search for the best slot then */ + for (i=0; i<queue->num_pkt; i++) { + asap_count_us = queue->nodes[i].pkt.count_us + queue->nodes[i].post_delay + packet_pre_delay + TX_JIT_DELAY + TX_MARGIN_DELAY; + if (i == (queue->num_pkt - 1)) { + /* Last packet index, we can insert after this one */ + MSG_DEBUG(DEBUG_JIT, "DEBUG: insert IMMEDIATE downlink, last in JiT queue (count_us=%u)\n", asap_count_us); + } else { + /* Check if packet can be inserted between this index and the next one */ + MSG_DEBUG(DEBUG_JIT, "DEBUG: try to insert IMMEDIATE downlink (count_us=%u) between index %d and index %d?\n", asap_count_us, i, i+1); + if (jit_collision_test(asap_count_us, packet_pre_delay, packet_post_delay, queue->nodes[i+1].pkt.count_us, queue->nodes[i+1].pre_delay, queue->nodes[i+1].post_delay) == true) { + MSG_DEBUG(DEBUG_JIT, "DEBUG: failed to insert IMMEDIATE downlink (count_us=%u), continue...\n", asap_count_us); + continue; + } else { + MSG_DEBUG(DEBUG_JIT, "DEBUG: insert IMMEDIATE downlink (count_us=%u)\n", asap_count_us); + break; + } + } + } + } + } + /* Set packet with ASAP timestamp */ + packet->count_us = asap_count_us; + } + + /* Check criteria_1: is it already too late to send this packet ? + * The packet should arrive at least at (tmst - TX_START_DELAY) to be programmed into concentrator + * Note: - Also add some margin, to be checked how much is needed, if needed + * - Valid for both Downlinks and Beacon packets + * + * Warning: unsigned arithmetic (handle roll-over) + * t_packet < t_current + TX_START_DELAY + MARGIN + */ + if ((packet->count_us - time_us) <= (TX_START_DELAY + TX_MARGIN_DELAY + TX_JIT_DELAY)) { + MSG_DEBUG(DEBUG_JIT_ERROR, "ERROR: Packet REJECTED, already too late to send it (current=%u, packet=%u, type=%d)\n", time_us, packet->count_us, pkt_type); + pthread_mutex_unlock(&mx_jit_queue); + return JIT_ERROR_TOO_LATE; + } + + /* Check criteria_2: Does packet timestamp seem plausible compared to current time + * We do not expect the server to program a downlink too early compared to current time + * Class A: downlink has to be sent in a 1s or 2s time window after RX + * Class B: downlink has to occur in a 128s time window + * Class C: no check needed, departure time has been calculated previously + * So let's define a safe delay above which we can say that the packet is out of bound: TX_MAX_ADVANCE_DELAY + * Note: - Valid for Downlinks only, not for Beacon packets + * + * Warning: unsigned arithmetic (handle roll-over) + t_packet > t_current + TX_MAX_ADVANCE_DELAY + */ + if ((pkt_type == JIT_PKT_TYPE_DOWNLINK_CLASS_A) || (pkt_type == JIT_PKT_TYPE_DOWNLINK_CLASS_B)) { + if ((packet->count_us - time_us) > TX_MAX_ADVANCE_DELAY) { + MSG_DEBUG(DEBUG_JIT_ERROR, "ERROR: Packet REJECTED, timestamp seems wrong, too much in advance (current=%u, packet=%u, type=%d)\n", time_us, packet->count_us, pkt_type); + pthread_mutex_unlock(&mx_jit_queue); + return JIT_ERROR_TOO_EARLY; + } + } + + /* Check criteria_3: does this new packet overlap with a packet already enqueued ? + * Note: - need to take into account packet's pre_delay and post_delay of each packet + * - Valid for both Downlinks and beacon packets + * - Beacon guard can be ignored if we try to queue a Class A downlink + */ + for (i=0; i<queue->num_pkt; i++) { + /* We ignore Beacon Guard for Class A/C downlinks */ + if (((pkt_type == JIT_PKT_TYPE_DOWNLINK_CLASS_A) || (pkt_type == JIT_PKT_TYPE_DOWNLINK_CLASS_C)) && (queue->nodes[i].pkt_type == JIT_PKT_TYPE_BEACON)) { + target_pre_delay = TX_START_DELAY; + } else { + target_pre_delay = queue->nodes[i].pre_delay; + } + + /* Check if there is a collision + * Warning: unsigned arithmetic (handle roll-over) + * t_packet_new - pre_delay_packet_new < t_packet_prev + post_delay_packet_prev (OVERLAP on post delay) + * t_packet_new + post_delay_packet_new > t_packet_prev - pre_delay_packet_prev (OVERLAP on pre delay) + */ + if (jit_collision_test(packet->count_us, packet_pre_delay, packet_post_delay, queue->nodes[i].pkt.count_us, target_pre_delay, queue->nodes[i].post_delay) == true) { + switch (queue->nodes[i].pkt_type) { + case JIT_PKT_TYPE_DOWNLINK_CLASS_A: + case JIT_PKT_TYPE_DOWNLINK_CLASS_B: + case JIT_PKT_TYPE_DOWNLINK_CLASS_C: + MSG_DEBUG(DEBUG_JIT_ERROR, "ERROR: Packet (type=%d) REJECTED, collision with packet already programmed at %u (%u)\n", pkt_type, queue->nodes[i].pkt.count_us, packet->count_us); + err_collision = JIT_ERROR_COLLISION_PACKET; + break; + case JIT_PKT_TYPE_BEACON: + if (pkt_type != JIT_PKT_TYPE_BEACON) { + /* do not overload logs for beacon/beacon collision, as it is expected to happen with beacon pre-scheduling algorith used */ + MSG_DEBUG(DEBUG_JIT_ERROR, "ERROR: Packet (type=%d) REJECTED, collision with beacon already programmed at %u (%u)\n", pkt_type, queue->nodes[i].pkt.count_us, packet->count_us); + } + err_collision = JIT_ERROR_COLLISION_BEACON; + break; + default: + MSG("ERROR: Unknown packet type, should not occur, BUG?\n"); + assert(0); + break; + } + pthread_mutex_unlock(&mx_jit_queue); + return err_collision; + } + } + + /* Finally enqueue it */ + /* Insert packet at the end of the queue */ + memcpy(&(queue->nodes[queue->num_pkt].pkt), packet, sizeof(struct lgw_pkt_tx_s)); + queue->nodes[queue->num_pkt].pre_delay = packet_pre_delay; + queue->nodes[queue->num_pkt].post_delay = packet_post_delay; + queue->nodes[queue->num_pkt].pkt_type = pkt_type; + if (pkt_type == JIT_PKT_TYPE_BEACON) { + queue->num_beacon++; + } + queue->num_pkt++; + /* Sort the queue in ascending order of packet timestamp */ + jit_sort_queue(queue); + + /* Done */ + pthread_mutex_unlock(&mx_jit_queue); + + jit_print_queue(queue, false, DEBUG_JIT); + + MSG_DEBUG(DEBUG_JIT, "enqueued packet with count_us=%u (size=%u bytes, toa=%u us, type=%u)\n", packet->count_us, packet->size, packet_post_delay, pkt_type); + + return JIT_ERROR_OK; +} + +enum jit_error_e jit_dequeue(struct jit_queue_s *queue, int index, struct lgw_pkt_tx_s *packet, enum jit_pkt_type_e *pkt_type) { + if (packet == NULL) { + MSG("ERROR: invalid parameter\n"); + return JIT_ERROR_INVALID; + } + + if ((index < 0) || (index >= JIT_QUEUE_MAX)) { + MSG("ERROR: invalid parameter\n"); + return JIT_ERROR_INVALID; + } + + if (jit_queue_is_empty(queue)) { + MSG("ERROR: cannot dequeue packet, JIT queue is empty\n"); + return JIT_ERROR_EMPTY; + } + + pthread_mutex_lock(&mx_jit_queue); + + /* Dequeue requested packet */ + memcpy(packet, &(queue->nodes[index].pkt), sizeof(struct lgw_pkt_tx_s)); + queue->num_pkt--; + *pkt_type = queue->nodes[index].pkt_type; + if (*pkt_type == JIT_PKT_TYPE_BEACON) { + queue->num_beacon--; + MSG_DEBUG(DEBUG_BEACON, "--- Beacon dequeued ---\n"); + } + + /* Replace dequeued packet with last packet of the queue */ + memcpy(&(queue->nodes[index]), &(queue->nodes[queue->num_pkt]), sizeof(struct jit_node_s)); + memset(&(queue->nodes[queue->num_pkt]), 0, sizeof(struct jit_node_s)); + + /* Sort queue in ascending order of packet timestamp */ + jit_sort_queue(queue); + + /* Done */ + pthread_mutex_unlock(&mx_jit_queue); + + jit_print_queue(queue, false, DEBUG_JIT); + + MSG_DEBUG(DEBUG_JIT, "dequeued packet with count_us=%u from index %d\n", packet->count_us, index); + + return JIT_ERROR_OK; +} + +enum jit_error_e jit_peek(struct jit_queue_s *queue, struct timeval *time, int *pkt_idx) { + /* Return index of node containing a packet inline with given time */ + int i = 0; + int idx_highest_priority = -1; + uint32_t time_us; + + if ((time == NULL) || (pkt_idx == NULL)) { + MSG("ERROR: invalid parameter\n"); + return JIT_ERROR_INVALID; + } + + if (jit_queue_is_empty(queue)) { + return JIT_ERROR_EMPTY; + } + + time_us = time->tv_sec * 1000000UL + time->tv_usec; + + pthread_mutex_lock(&mx_jit_queue); + + /* Search for highest priority packet to be sent */ + for (i=0; i<queue->num_pkt; i++) { + /* First check if that packet is outdated: + * If a packet seems too much in advance, and was not rejected at enqueue time, + * it means that we missed it for peeking, we need to drop it + * + * Warning: unsigned arithmetic + * t_packet > t_current + TX_MAX_ADVANCE_DELAY + */ + if ((queue->nodes[i].pkt.count_us - time_us) >= TX_MAX_ADVANCE_DELAY) { + /* We drop the packet to avoid lock-up */ + queue->num_pkt--; + if (queue->nodes[i].pkt_type == JIT_PKT_TYPE_BEACON) { + queue->num_beacon--; + MSG("WARNING: --- Beacon dropped (current_time=%u, packet_time=%u) ---\n", time_us, queue->nodes[i].pkt.count_us); + } else { + MSG("WARNING: --- Packet dropped (current_time=%u, packet_time=%u) ---\n", time_us, queue->nodes[i].pkt.count_us); + } + + /* Replace dropped packet with last packet of the queue */ + memcpy(&(queue->nodes[i]), &(queue->nodes[queue->num_pkt]), sizeof(struct jit_node_s)); + memset(&(queue->nodes[queue->num_pkt]), 0, sizeof(struct jit_node_s)); + + /* Sort queue in ascending order of packet timestamp */ + jit_sort_queue(queue); + + /* restart loop after purge to find packet to be sent */ + i = 0; + continue; + } + + /* Then look for highest priority packet to be sent: + * Warning: unsigned arithmetic (handle roll-over) + * t_packet < t_highest + */ + if ((idx_highest_priority == -1) || (((queue->nodes[i].pkt.count_us - time_us) < (queue->nodes[idx_highest_priority].pkt.count_us - time_us)))) { + idx_highest_priority = i; + } + } + + /* Peek criteria 1: look for a packet to be sent in next TX_JIT_DELAY ms timeframe + * Warning: unsigned arithmetic (handle roll-over) + * t_packet < t_current + TX_JIT_DELAY + */ + if ((queue->nodes[idx_highest_priority].pkt.count_us - time_us) < TX_JIT_DELAY) { + *pkt_idx = idx_highest_priority; + MSG_DEBUG(DEBUG_JIT, "peek packet with count_us=%u at index %d\n", + queue->nodes[idx_highest_priority].pkt.count_us, idx_highest_priority); + } else { + *pkt_idx = -1; + } + + pthread_mutex_unlock(&mx_jit_queue); + + return JIT_ERROR_OK; +} + +void jit_print_queue(struct jit_queue_s *queue, bool show_all, int debug_level) { + int i = 0; + int loop_end; + + if (jit_queue_is_empty(queue)) { + MSG_DEBUG(debug_level, "INFO: [jit] queue is empty\n"); + } else { + pthread_mutex_lock(&mx_jit_queue); + + MSG_DEBUG(debug_level, "INFO: [jit] queue contains %d packets:\n", queue->num_pkt); + MSG_DEBUG(debug_level, "INFO: [jit] queue contains %d beacons:\n", queue->num_beacon); + loop_end = (show_all == true) ? JIT_QUEUE_MAX : queue->num_pkt; + for (i=0; i<loop_end; i++) { + MSG_DEBUG(debug_level, " - node[%d]: count_us=%u - type=%d\n", + i, + queue->nodes[i].pkt.count_us, + queue->nodes[i].pkt_type); + } + + pthread_mutex_unlock(&mx_jit_queue); + } +} + diff --git a/lora_pkt_fwd/src/lora_pkt_fwd.c b/lora_pkt_fwd/src/lora_pkt_fwd.c new file mode 100644 index 0000000..801f28d --- /dev/null +++ b/lora_pkt_fwd/src/lora_pkt_fwd.c @@ -0,0 +1,2889 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Configure Lora concentrator and forward packets to a server + Use GPS for packet timestamping. + Send a becon at a regular interval without server intervention + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Michael Coracin +*/ + + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +/* fix an issue between POSIX and C99 */ +#if __STDC_VERSION__ >= 199901L + #define _XOPEN_SOURCE 600 +#else + #define _XOPEN_SOURCE 500 +#endif + +#include <stdint.h> /* C99 types */ +#include <stdbool.h> /* bool type */ +#include <stdio.h> /* printf, fprintf, snprintf, fopen, fputs */ + +#include <string.h> /* memset */ +#include <signal.h> /* sigaction */ +#include <time.h> /* time, clock_gettime, strftime, gmtime */ +#include <sys/time.h> /* timeval */ +#include <unistd.h> /* getopt, access */ +#include <stdlib.h> /* atoi, exit */ +#include <errno.h> /* error messages */ +#include <math.h> /* modf */ +#include <assert.h> + +#include <sys/socket.h> /* socket specific definitions */ +#include <netinet/in.h> /* INET constants and stuff */ +#include <arpa/inet.h> /* IP address conversion stuff */ +#include <netdb.h> /* gai_strerror */ + +#include <pthread.h> + +#include "trace.h" +#include "jitqueue.h" +#include "timersync.h" +#include "parson.h" +#include "base64.h" +#include "loragw_hal.h" +#include "loragw_gps.h" +#include "loragw_aux.h" +#include "loragw_reg.h" + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define STRINGIFY(x) #x +#define STR(x) STRINGIFY(x) + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ + +#ifndef VERSION_STRING + #define VERSION_STRING "undefined" +#endif + +#define DEFAULT_SERVER 127.0.0.1 /* hostname also supported */ +#define DEFAULT_PORT_UP 1780 +#define DEFAULT_PORT_DW 1782 +#define DEFAULT_KEEPALIVE 5 /* default time interval for downstream keep-alive packet */ +#define DEFAULT_STAT 30 /* default time interval for statistics */ +#define PUSH_TIMEOUT_MS 100 +#define PULL_TIMEOUT_MS 200 +#define GPS_REF_MAX_AGE 30 /* maximum admitted delay in seconds of GPS loss before considering latest GPS sync unusable */ +#define FETCH_SLEEP_MS 10 /* nb of ms waited when a fetch return no packets */ +#define BEACON_POLL_MS 50 /* time in ms between polling of beacon TX status */ + +#define PROTOCOL_VERSION 2 /* v1.3 */ + +#define XERR_INIT_AVG 128 /* nb of measurements the XTAL correction is averaged on as initial value */ +#define XERR_FILT_COEF 256 /* coefficient for low-pass XTAL error tracking */ + +#define PKT_PUSH_DATA 0 +#define PKT_PUSH_ACK 1 +#define PKT_PULL_DATA 2 +#define PKT_PULL_RESP 3 +#define PKT_PULL_ACK 4 +#define PKT_TX_ACK 5 + +#define NB_PKT_MAX 8 /* max number of packets per fetch/send cycle */ + +#define MIN_LORA_PREAMB 6 /* minimum Lora preamble length for this application */ +#define STD_LORA_PREAMB 8 +#define MIN_FSK_PREAMB 3 /* minimum FSK preamble length for this application */ +#define STD_FSK_PREAMB 5 + +#define STATUS_SIZE 200 +#define TX_BUFF_SIZE ((540 * NB_PKT_MAX) + 30 + STATUS_SIZE) + +#define UNIX_GPS_EPOCH_OFFSET 315964800 /* Number of seconds ellapsed between 01.Jan.1970 00:00:00 + and 06.Jan.1980 00:00:00 */ + +#define DEFAULT_BEACON_FREQ_HZ 869525000 +#define DEFAULT_BEACON_FREQ_NB 1 +#define DEFAULT_BEACON_FREQ_STEP 0 +#define DEFAULT_BEACON_DATARATE 9 +#define DEFAULT_BEACON_BW_HZ 125000 +#define DEFAULT_BEACON_POWER 14 +#define DEFAULT_BEACON_INFODESC 0 + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE VARIABLES (GLOBAL) ------------------------------------------- */ + +/* signal handling variables */ +volatile bool exit_sig = false; /* 1 -> application terminates cleanly (shut down hardware, close open files, etc) */ +volatile bool quit_sig = false; /* 1 -> application terminates without shutting down the hardware */ + +/* packets filtering configuration variables */ +static bool fwd_valid_pkt = true; /* packets with PAYLOAD CRC OK are forwarded */ +static bool fwd_error_pkt = false; /* packets with PAYLOAD CRC ERROR are NOT forwarded */ +static bool fwd_nocrc_pkt = false; /* packets with NO PAYLOAD CRC are NOT forwarded */ + +/* network configuration variables */ +static uint64_t lgwm = 0; /* Lora gateway MAC address */ +static char serv_addr[64] = STR(DEFAULT_SERVER); /* address of the server (host name or IPv4/IPv6) */ +static char serv_port_up[8] = STR(DEFAULT_PORT_UP); /* server port for upstream traffic */ +static char serv_port_down[8] = STR(DEFAULT_PORT_DW); /* server port for downstream traffic */ +static int keepalive_time = DEFAULT_KEEPALIVE; /* send a PULL_DATA request every X seconds, negative = disabled */ + +/* statistics collection configuration variables */ +static unsigned stat_interval = DEFAULT_STAT; /* time interval (in sec) at which statistics are collected and displayed */ + +/* gateway <-> MAC protocol variables */ +static uint32_t net_mac_h; /* Most Significant Nibble, network order */ +static uint32_t net_mac_l; /* Least Significant Nibble, network order */ + +/* network sockets */ +static int sock_up; /* socket for upstream traffic */ +static int sock_down; /* socket for downstream traffic */ + +/* network protocol variables */ +static struct timeval push_timeout_half = {0, (PUSH_TIMEOUT_MS * 500)}; /* cut in half, critical for throughput */ +static struct timeval pull_timeout = {0, (PULL_TIMEOUT_MS * 1000)}; /* non critical for throughput */ + +/* hardware access control and correction */ +pthread_mutex_t mx_concent = PTHREAD_MUTEX_INITIALIZER; /* control access to the concentrator */ +static pthread_mutex_t mx_xcorr = PTHREAD_MUTEX_INITIALIZER; /* control access to the XTAL correction */ +static bool xtal_correct_ok = false; /* set true when XTAL correction is stable enough */ +static double xtal_correct = 1.0; + +/* GPS configuration and synchronization */ +static char gps_tty_path[64] = "\0"; /* path of the TTY port GPS is connected on */ +static int gps_tty_fd = -1; /* file descriptor of the GPS TTY port */ +static bool gps_enabled = false; /* is GPS enabled on that gateway ? */ + +/* GPS time reference */ +static pthread_mutex_t mx_timeref = PTHREAD_MUTEX_INITIALIZER; /* control access to GPS time reference */ +static bool gps_ref_valid; /* is GPS reference acceptable (ie. not too old) */ +static struct tref time_reference_gps; /* time reference used for GPS <-> timestamp conversion */ + +/* Reference coordinates, for broadcasting (beacon) */ +static struct coord_s reference_coord; + +/* Enable faking the GPS coordinates of the gateway */ +static bool gps_fake_enable; /* enable the feature */ + +/* measurements to establish statistics */ +static pthread_mutex_t mx_meas_up = PTHREAD_MUTEX_INITIALIZER; /* control access to the upstream measurements */ +static uint32_t meas_nb_rx_rcv = 0; /* count packets received */ +static uint32_t meas_nb_rx_ok = 0; /* count packets received with PAYLOAD CRC OK */ +static uint32_t meas_nb_rx_bad = 0; /* count packets received with PAYLOAD CRC ERROR */ +static uint32_t meas_nb_rx_nocrc = 0; /* count packets received with NO PAYLOAD CRC */ +static uint32_t meas_up_pkt_fwd = 0; /* number of radio packet forwarded to the server */ +static uint32_t meas_up_network_byte = 0; /* sum of UDP bytes sent for upstream traffic */ +static uint32_t meas_up_payload_byte = 0; /* sum of radio payload bytes sent for upstream traffic */ +static uint32_t meas_up_dgram_sent = 0; /* number of datagrams sent for upstream traffic */ +static uint32_t meas_up_ack_rcv = 0; /* number of datagrams acknowledged for upstream traffic */ + +static pthread_mutex_t mx_meas_dw = PTHREAD_MUTEX_INITIALIZER; /* control access to the downstream measurements */ +static uint32_t meas_dw_pull_sent = 0; /* number of PULL requests sent for downstream traffic */ +static uint32_t meas_dw_ack_rcv = 0; /* number of PULL requests acknowledged for downstream traffic */ +static uint32_t meas_dw_dgram_rcv = 0; /* count PULL response packets received for downstream traffic */ +static uint32_t meas_dw_network_byte = 0; /* sum of UDP bytes sent for upstream traffic */ +static uint32_t meas_dw_payload_byte = 0; /* sum of radio payload bytes sent for upstream traffic */ +static uint32_t meas_nb_tx_ok = 0; /* count packets emitted successfully */ +static uint32_t meas_nb_tx_fail = 0; /* count packets were TX failed for other reasons */ +static uint32_t meas_nb_tx_requested = 0; /* count TX request from server (downlinks) */ +static uint32_t meas_nb_tx_rejected_collision_packet = 0; /* count packets were TX request were rejected due to collision with another packet already programmed */ +static uint32_t meas_nb_tx_rejected_collision_beacon = 0; /* count packets were TX request were rejected due to collision with a beacon already programmed */ +static uint32_t meas_nb_tx_rejected_too_late = 0; /* count packets were TX request were rejected because it is too late to program it */ +static uint32_t meas_nb_tx_rejected_too_early = 0; /* count packets were TX request were rejected because timestamp is too much in advance */ +static uint32_t meas_nb_beacon_queued = 0; /* count beacon inserted in jit queue */ +static uint32_t meas_nb_beacon_sent = 0; /* count beacon actually sent to concentrator */ +static uint32_t meas_nb_beacon_rejected = 0; /* count beacon rejected for queuing */ + +static pthread_mutex_t mx_meas_gps = PTHREAD_MUTEX_INITIALIZER; /* control access to the GPS statistics */ +static bool gps_coord_valid; /* could we get valid GPS coordinates ? */ +static struct coord_s meas_gps_coord; /* GPS position of the gateway */ +static struct coord_s meas_gps_err; /* GPS position of the gateway */ + +static pthread_mutex_t mx_stat_rep = PTHREAD_MUTEX_INITIALIZER; /* control access to the status report */ +static bool report_ready = false; /* true when there is a new report to send to the server */ +static char status_report[STATUS_SIZE]; /* status report as a JSON object */ + +/* beacon parameters */ +static uint32_t beacon_period = 0; /* set beaconing period, must be a sub-multiple of 86400, the nb of sec in a day */ +static uint32_t beacon_freq_hz = DEFAULT_BEACON_FREQ_HZ; /* set beacon TX frequency, in Hz */ +static uint8_t beacon_freq_nb = DEFAULT_BEACON_FREQ_NB; /* set number of beaconing channels beacon */ +static uint32_t beacon_freq_step = DEFAULT_BEACON_FREQ_STEP; /* set frequency step between beacon channels, in Hz */ +static uint8_t beacon_datarate = DEFAULT_BEACON_DATARATE; /* set beacon datarate (SF) */ +static uint32_t beacon_bw_hz = DEFAULT_BEACON_BW_HZ; /* set beacon bandwidth, in Hz */ +static int8_t beacon_power = DEFAULT_BEACON_POWER; /* set beacon TX power, in dBm */ +static uint8_t beacon_infodesc = DEFAULT_BEACON_INFODESC; /* set beacon information descriptor */ + +/* auto-quit function */ +static uint32_t autoquit_threshold = 0; /* enable auto-quit after a number of non-acknowledged PULL_DATA (0 = disabled)*/ + +/* Just In Time TX scheduling */ +static struct jit_queue_s jit_queue; + +/* Gateway specificities */ +static int8_t antenna_gain = 0; + +/* TX capabilities */ +static struct lgw_tx_gain_lut_s txlut; /* TX gain table */ +static uint32_t tx_freq_min[LGW_RF_CHAIN_NB]; /* lowest frequency supported by TX chain */ +static uint32_t tx_freq_max[LGW_RF_CHAIN_NB]; /* highest frequency supported by TX chain */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DECLARATION ---------------------------------------- */ + +static void sig_handler(int sigio); + +static int parse_SX1301_configuration(const char * conf_file); + +static int parse_gateway_configuration(const char * conf_file); + +static uint16_t crc16(const uint8_t * data, unsigned size); + +static double difftimespec(struct timespec end, struct timespec beginning); + +static void gps_process_sync(void); + +static void gps_process_coords(void); + +/* threads */ +void thread_up(void); +void thread_down(void); +void thread_gps(void); +void thread_valid(void); +void thread_jit(void); +void thread_timersync(void); + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DEFINITION ----------------------------------------- */ + +static void sig_handler(int sigio) { + if (sigio == SIGQUIT) { + quit_sig = true; + } else if ((sigio == SIGINT) || (sigio == SIGTERM)) { + exit_sig = true; + } + return; +} + +static int parse_SX1301_configuration(const char * conf_file) { + int i; + char param_name[32]; /* used to generate variable parameter names */ + const char *str; /* used to store string value from JSON object */ + const char conf_obj_name[] = "SX1301_conf"; + JSON_Value *root_val = NULL; + JSON_Object *conf_obj = NULL; + JSON_Object *conf_lbt_obj = NULL; + JSON_Object *conf_lbtchan_obj = NULL; + JSON_Value *val = NULL; + JSON_Array *conf_array = NULL; + struct lgw_conf_board_s boardconf; + struct lgw_conf_lbt_s lbtconf; + struct lgw_conf_rxrf_s rfconf; + struct lgw_conf_rxif_s ifconf; + uint32_t sf, bw, fdev; + + /* try to parse JSON */ + root_val = json_parse_file_with_comments(conf_file); + if (root_val == NULL) { + MSG("ERROR: %s is not a valid JSON file\n", conf_file); + exit(EXIT_FAILURE); + } + + /* point to the gateway configuration object */ + conf_obj = json_object_get_object(json_value_get_object(root_val), conf_obj_name); + if (conf_obj == NULL) { + MSG("INFO: %s does not contain a JSON object named %s\n", conf_file, conf_obj_name); + return -1; + } else { + MSG("INFO: %s does contain a JSON object named %s, parsing SX1301 parameters\n", conf_file, conf_obj_name); + } + + /* set board configuration */ + memset(&boardconf, 0, sizeof boardconf); /* initialize configuration structure */ + val = json_object_get_value(conf_obj, "lorawan_public"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONBoolean) { + boardconf.lorawan_public = (bool)json_value_get_boolean(val); + } else { + MSG("WARNING: Data type for lorawan_public seems wrong, please check\n"); + boardconf.lorawan_public = false; + } + val = json_object_get_value(conf_obj, "clksrc"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONNumber) { + boardconf.clksrc = (uint8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for clksrc seems wrong, please check\n"); + boardconf.clksrc = 0; + } + MSG("INFO: lorawan_public %d, clksrc %d\n", boardconf.lorawan_public, boardconf.clksrc); + /* all parameters parsed, submitting configuration to the HAL */ + if (lgw_board_setconf(boardconf) != LGW_HAL_SUCCESS) { + MSG("ERROR: Failed to configure board\n"); + return -1; + } + + /* set LBT configuration */ + memset(&lbtconf, 0, sizeof lbtconf); /* initialize configuration structure */ + conf_lbt_obj = json_object_get_object(conf_obj, "lbt_cfg"); /* fetch value (if possible) */ + if (conf_lbt_obj == NULL) { + MSG("INFO: no configuration for LBT\n"); + } else { + val = json_object_get_value(conf_lbt_obj, "enable"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONBoolean) { + lbtconf.enable = (bool)json_value_get_boolean(val); + } else { + MSG("WARNING: Data type for lbt_cfg.enable seems wrong, please check\n"); + lbtconf.enable = false; + } + if (lbtconf.enable == true) { + val = json_object_get_value(conf_lbt_obj, "rssi_target"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONNumber) { + lbtconf.rssi_target = (int8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for lbt_cfg.rssi_target seems wrong, please check\n"); + lbtconf.rssi_target = 0; + } + val = json_object_get_value(conf_lbt_obj, "sx127x_rssi_offset"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONNumber) { + lbtconf.rssi_offset = (int8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for lbt_cfg.sx127x_rssi_offset seems wrong, please check\n"); + lbtconf.rssi_offset = 0; + } + /* set LBT channels configuration */ + conf_array = json_object_get_array(conf_lbt_obj, "chan_cfg"); + if (conf_array != NULL) { + lbtconf.nb_channel = json_array_get_count( conf_array ); + MSG("INFO: %u LBT channels configured\n", lbtconf.nb_channel); + } + for (i = 0; i < (int)lbtconf.nb_channel; i++) { + /* Sanity check */ + if (i >= LBT_CHANNEL_FREQ_NB) + { + MSG("ERROR: LBT channel %d not supported, skip it\n", i ); + break; + } + /* Get LBT channel configuration object from array */ + conf_lbtchan_obj = json_array_get_object(conf_array, i); + + /* Channel frequency */ + val = json_object_dotget_value(conf_lbtchan_obj, "freq_hz"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONNumber) { + lbtconf.channels[i].freq_hz = (uint32_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for lbt_cfg.channels[%d].freq_hz seems wrong, please check\n", i); + lbtconf.channels[i].freq_hz = 0; + } + + /* Channel scan time */ + val = json_object_dotget_value(conf_lbtchan_obj, "scan_time_us"); /* fetch value (if possible) */ + if (json_value_get_type(val) == JSONNumber) { + lbtconf.channels[i].scan_time_us = (uint16_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for lbt_cfg.channels[%d].scan_time_us seems wrong, please check\n", i); + lbtconf.channels[i].scan_time_us = 0; + } + } + + /* all parameters parsed, submitting configuration to the HAL */ + if (lgw_lbt_setconf(lbtconf) != LGW_HAL_SUCCESS) { + MSG("ERROR: Failed to configure LBT\n"); + return -1; + } + } else { + MSG("INFO: LBT is disabled\n"); + } + } + + /* set antenna gain configuration */ + val = json_object_get_value(conf_obj, "antenna_gain"); /* fetch value (if possible) */ + if (val != NULL) { + if (json_value_get_type(val) == JSONNumber) { + antenna_gain = (int8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for antenna_gain seems wrong, please check\n"); + antenna_gain = 0; + } + } + MSG("INFO: antenna_gain %d dBi\n", antenna_gain); + + /* set configuration for tx gains */ + memset(&txlut, 0, sizeof txlut); /* initialize configuration structure */ + for (i = 0; i < TX_GAIN_LUT_SIZE_MAX; i++) { + snprintf(param_name, sizeof param_name, "tx_lut_%i", i); /* compose parameter path inside JSON structure */ + val = json_object_get_value(conf_obj, param_name); /* fetch value (if possible) */ + if (json_value_get_type(val) != JSONObject) { + MSG("INFO: no configuration for tx gain lut %i\n", i); + continue; + } + txlut.size++; /* update TX LUT size based on JSON object found in configuration file */ + /* there is an object to configure that TX gain index, let's parse it */ + snprintf(param_name, sizeof param_name, "tx_lut_%i.pa_gain", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONNumber) { + txlut.lut[i].pa_gain = (uint8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for %s[%d] seems wrong, please check\n", param_name, i); + txlut.lut[i].pa_gain = 0; + } + snprintf(param_name, sizeof param_name, "tx_lut_%i.dac_gain", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONNumber) { + txlut.lut[i].dac_gain = (uint8_t)json_value_get_number(val); + } else { + txlut.lut[i].dac_gain = 3; /* This is the only dac_gain supported for now */ + } + snprintf(param_name, sizeof param_name, "tx_lut_%i.dig_gain", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONNumber) { + txlut.lut[i].dig_gain = (uint8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for %s[%d] seems wrong, please check\n", param_name, i); + txlut.lut[i].dig_gain = 0; + } + snprintf(param_name, sizeof param_name, "tx_lut_%i.mix_gain", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONNumber) { + txlut.lut[i].mix_gain = (uint8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for %s[%d] seems wrong, please check\n", param_name, i); + txlut.lut[i].mix_gain = 0; + } + snprintf(param_name, sizeof param_name, "tx_lut_%i.rf_power", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONNumber) { + txlut.lut[i].rf_power = (int8_t)json_value_get_number(val); + } else { + MSG("WARNING: Data type for %s[%d] seems wrong, please check\n", param_name, i); + txlut.lut[i].rf_power = 0; + } + } + /* all parameters parsed, submitting configuration to the HAL */ + if (txlut.size > 0) { + MSG("INFO: Configuring TX LUT with %u indexes\n", txlut.size); + if (lgw_txgain_setconf(&txlut) != LGW_HAL_SUCCESS) { + MSG("ERROR: Failed to configure concentrator TX Gain LUT\n"); + return -1; + } + } else { + MSG("WARNING: No TX gain LUT defined\n"); + } + + /* set configuration for RF chains */ + for (i = 0; i < LGW_RF_CHAIN_NB; ++i) { + memset(&rfconf, 0, sizeof rfconf); /* initialize configuration structure */ + snprintf(param_name, sizeof param_name, "radio_%i", i); /* compose parameter path inside JSON structure */ + val = json_object_get_value(conf_obj, param_name); /* fetch value (if possible) */ + if (json_value_get_type(val) != JSONObject) { + MSG("INFO: no configuration for radio %i\n", i); + continue; + } + /* there is an object to configure that radio, let's parse it */ + snprintf(param_name, sizeof param_name, "radio_%i.enable", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONBoolean) { + rfconf.enable = (bool)json_value_get_boolean(val); + } else { + rfconf.enable = false; + } + if (rfconf.enable == false) { /* radio disabled, nothing else to parse */ + MSG("INFO: radio %i disabled\n", i); + } else { /* radio enabled, will parse the other parameters */ + snprintf(param_name, sizeof param_name, "radio_%i.freq", i); + rfconf.freq_hz = (uint32_t)json_object_dotget_number(conf_obj, param_name); + snprintf(param_name, sizeof param_name, "radio_%i.rssi_offset", i); + rfconf.rssi_offset = (float)json_object_dotget_number(conf_obj, param_name); + snprintf(param_name, sizeof param_name, "radio_%i.type", i); + str = json_object_dotget_string(conf_obj, param_name); + if (!strncmp(str, "SX1255", 6)) { + rfconf.type = LGW_RADIO_TYPE_SX1255; + } else if (!strncmp(str, "SX1257", 6)) { + rfconf.type = LGW_RADIO_TYPE_SX1257; + } else { + MSG("WARNING: invalid radio type: %s (should be SX1255 or SX1257)\n", str); + } + snprintf(param_name, sizeof param_name, "radio_%i.tx_enable", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONBoolean) { + rfconf.tx_enable = (bool)json_value_get_boolean(val); + if (rfconf.tx_enable == true) { + /* tx is enabled on this rf chain, we need its frequency range */ + snprintf(param_name, sizeof param_name, "radio_%i.tx_freq_min", i); + tx_freq_min[i] = (uint32_t)json_object_dotget_number(conf_obj, param_name); + snprintf(param_name, sizeof param_name, "radio_%i.tx_freq_max", i); + tx_freq_max[i] = (uint32_t)json_object_dotget_number(conf_obj, param_name); + if ((tx_freq_min[i] == 0) || (tx_freq_max[i] == 0)) { + MSG("WARNING: no frequency range specified for TX rf chain %d\n", i); + } + /* ... and the notch filter frequency to be set */ + snprintf(param_name, sizeof param_name, "radio_%i.tx_notch_freq", i); + rfconf.tx_notch_freq = (uint32_t)json_object_dotget_number(conf_obj, param_name); + } + } else { + rfconf.tx_enable = false; + } + MSG("INFO: radio %i enabled (type %s), center frequency %u, RSSI offset %f, tx enabled %d, tx_notch_freq %u\n", i, str, rfconf.freq_hz, rfconf.rssi_offset, rfconf.tx_enable, rfconf.tx_notch_freq); + } + /* all parameters parsed, submitting configuration to the HAL */ + if (lgw_rxrf_setconf(i, rfconf) != LGW_HAL_SUCCESS) { + MSG("ERROR: invalid configuration for radio %i\n", i); + return -1; + } + } + + /* set configuration for Lora multi-SF channels (bandwidth cannot be set) */ + for (i = 0; i < LGW_MULTI_NB; ++i) { + memset(&ifconf, 0, sizeof ifconf); /* initialize configuration structure */ + snprintf(param_name, sizeof param_name, "chan_multiSF_%i", i); /* compose parameter path inside JSON structure */ + val = json_object_get_value(conf_obj, param_name); /* fetch value (if possible) */ + if (json_value_get_type(val) != JSONObject) { + MSG("INFO: no configuration for Lora multi-SF channel %i\n", i); + continue; + } + /* there is an object to configure that Lora multi-SF channel, let's parse it */ + snprintf(param_name, sizeof param_name, "chan_multiSF_%i.enable", i); + val = json_object_dotget_value(conf_obj, param_name); + if (json_value_get_type(val) == JSONBoolean) { + ifconf.enable = (bool)json_value_get_boolean(val); + } else { + ifconf.enable = false; + } + if (ifconf.enable == false) { /* Lora multi-SF channel disabled, nothing else to parse */ + MSG("INFO: Lora multi-SF channel %i disabled\n", i); + } else { /* Lora multi-SF channel enabled, will parse the other parameters */ + snprintf(param_name, sizeof param_name, "chan_multiSF_%i.radio", i); + ifconf.rf_chain = (uint32_t)json_object_dotget_number(conf_obj, param_name); + snprintf(param_name, sizeof param_name, "chan_multiSF_%i.if", i); + ifconf.freq_hz = (int32_t)json_object_dotget_number(conf_obj, param_name); + // TODO: handle individual SF enabling and disabling (spread_factor) + MSG("INFO: Lora multi-SF channel %i> radio %i, IF %i Hz, 125 kHz bw, SF 7 to 12\n", i, ifconf.rf_chain, ifconf.freq_hz); + } + /* all parameters parsed, submitting configuration to the HAL */ + if (lgw_rxif_setconf(i, ifconf) != LGW_HAL_SUCCESS) { + MSG("ERROR: invalid configuration for Lora multi-SF channel %i\n", i); + return -1; + } + } + + /* set configuration for Lora standard channel */ + memset(&ifconf, 0, sizeof ifconf); /* initialize configuration structure */ + val = json_object_get_value(conf_obj, "chan_Lora_std"); /* fetch value (if possible) */ + if (json_value_get_type(val) != JSONObject) { + MSG("INFO: no configuration for Lora standard channel\n"); + } else { + val = json_object_dotget_value(conf_obj, "chan_Lora_std.enable"); + if (json_value_get_type(val) == JSONBoolean) { + ifconf.enable = (bool)json_value_get_boolean(val); + } else { + ifconf.enable = false; + } + if (ifconf.enable == false) { + MSG("INFO: Lora standard channel %i disabled\n", i); + } else { + ifconf.rf_chain = (uint32_t)json_object_dotget_number(conf_obj, "chan_Lora_std.radio"); + ifconf.freq_hz = (int32_t)json_object_dotget_number(conf_obj, "chan_Lora_std.if"); + bw = (uint32_t)json_object_dotget_number(conf_obj, "chan_Lora_std.bandwidth"); + switch(bw) { + case 500000: ifconf.bandwidth = BW_500KHZ; break; + case 250000: ifconf.bandwidth = BW_250KHZ; break; + case 125000: ifconf.bandwidth = BW_125KHZ; break; + default: ifconf.bandwidth = BW_UNDEFINED; + } + sf = (uint32_t)json_object_dotget_number(conf_obj, "chan_Lora_std.spread_factor"); + switch(sf) { + case 7: ifconf.datarate = DR_LORA_SF7; break; + case 8: ifconf.datarate = DR_LORA_SF8; break; + case 9: ifconf.datarate = DR_LORA_SF9; break; + case 10: ifconf.datarate = DR_LORA_SF10; break; + case 11: ifconf.datarate = DR_LORA_SF11; break; + case 12: ifconf.datarate = DR_LORA_SF12; break; + default: ifconf.datarate = DR_UNDEFINED; + } + MSG("INFO: Lora std channel> radio %i, IF %i Hz, %u Hz bw, SF %u\n", ifconf.rf_chain, ifconf.freq_hz, bw, sf); + } + if (lgw_rxif_setconf(8, ifconf) != LGW_HAL_SUCCESS) { + MSG("ERROR: invalid configuration for Lora standard channel\n"); + return -1; + } + } + + /* set configuration for FSK channel */ + memset(&ifconf, 0, sizeof ifconf); /* initialize configuration structure */ + val = json_object_get_value(conf_obj, "chan_FSK"); /* fetch value (if possible) */ + if (json_value_get_type(val) != JSONObject) { + MSG("INFO: no configuration for FSK channel\n"); + } else { + val = json_object_dotget_value(conf_obj, "chan_FSK.enable"); + if (json_value_get_type(val) == JSONBoolean) { + ifconf.enable = (bool)json_value_get_boolean(val); + } else { + ifconf.enable = false; + } + if (ifconf.enable == false) { + MSG("INFO: FSK channel %i disabled\n", i); + } else { + ifconf.rf_chain = (uint32_t)json_object_dotget_number(conf_obj, "chan_FSK.radio"); + ifconf.freq_hz = (int32_t)json_object_dotget_number(conf_obj, "chan_FSK.if"); + bw = (uint32_t)json_object_dotget_number(conf_obj, "chan_FSK.bandwidth"); + fdev = (uint32_t)json_object_dotget_number(conf_obj, "chan_FSK.freq_deviation"); + ifconf.datarate = (uint32_t)json_object_dotget_number(conf_obj, "chan_FSK.datarate"); + + /* if chan_FSK.bandwidth is set, it has priority over chan_FSK.freq_deviation */ + if ((bw == 0) && (fdev != 0)) { + bw = 2 * fdev + ifconf.datarate; + } + if (bw == 0) ifconf.bandwidth = BW_UNDEFINED; + else if (bw <= 7800) ifconf.bandwidth = BW_7K8HZ; + else if (bw <= 15600) ifconf.bandwidth = BW_15K6HZ; + else if (bw <= 31200) ifconf.bandwidth = BW_31K2HZ; + else if (bw <= 62500) ifconf.bandwidth = BW_62K5HZ; + else if (bw <= 125000) ifconf.bandwidth = BW_125KHZ; + else if (bw <= 250000) ifconf.bandwidth = BW_250KHZ; + else if (bw <= 500000) ifconf.bandwidth = BW_500KHZ; + else ifconf.bandwidth = BW_UNDEFINED; + + MSG("INFO: FSK channel> radio %i, IF %i Hz, %u Hz bw, %u bps datarate\n", ifconf.rf_chain, ifconf.freq_hz, bw, ifconf.datarate); + } + if (lgw_rxif_setconf(9, ifconf) != LGW_HAL_SUCCESS) { + MSG("ERROR: invalid configuration for FSK channel\n"); + return -1; + } + } + json_value_free(root_val); + + return 0; +} + +static int parse_gateway_configuration(const char * conf_file) { + const char conf_obj_name[] = "gateway_conf"; + JSON_Value *root_val; + JSON_Object *conf_obj = NULL; + JSON_Value *val = NULL; /* needed to detect the absence of some fields */ + const char *str; /* pointer to sub-strings in the JSON data */ + unsigned long long ull = 0; + + /* try to parse JSON */ + root_val = json_parse_file_with_comments(conf_file); + if (root_val == NULL) { + MSG("ERROR: %s is not a valid JSON file\n", conf_file); + exit(EXIT_FAILURE); + } + + /* point to the gateway configuration object */ + conf_obj = json_object_get_object(json_value_get_object(root_val), conf_obj_name); + if (conf_obj == NULL) { + MSG("INFO: %s does not contain a JSON object named %s\n", conf_file, conf_obj_name); + return -1; + } else { + MSG("INFO: %s does contain a JSON object named %s, parsing gateway parameters\n", conf_file, conf_obj_name); + } + + /* gateway unique identifier (aka MAC address) (optional) */ + str = json_object_get_string(conf_obj, "gateway_ID"); + if (str != NULL) { + sscanf(str, "%llx", &ull); + lgwm = ull; + MSG("INFO: gateway MAC address is configured to %016llX\n", ull); + } + + /* server hostname or IP address (optional) */ + str = json_object_get_string(conf_obj, "server_address"); + if (str != NULL) { + strncpy(serv_addr, str, sizeof serv_addr); + MSG("INFO: server hostname or IP address is configured to \"%s\"\n", serv_addr); + } + + /* get up and down ports (optional) */ + val = json_object_get_value(conf_obj, "serv_port_up"); + if (val != NULL) { + snprintf(serv_port_up, sizeof serv_port_up, "%u", (uint16_t)json_value_get_number(val)); + MSG("INFO: upstream port is configured to \"%s\"\n", serv_port_up); + } + val = json_object_get_value(conf_obj, "serv_port_down"); + if (val != NULL) { + snprintf(serv_port_down, sizeof serv_port_down, "%u", (uint16_t)json_value_get_number(val)); + MSG("INFO: downstream port is configured to \"%s\"\n", serv_port_down); + } + + /* get keep-alive interval (in seconds) for downstream (optional) */ + val = json_object_get_value(conf_obj, "keepalive_interval"); + if (val != NULL) { + keepalive_time = (int)json_value_get_number(val); + MSG("INFO: downstream keep-alive interval is configured to %u seconds\n", keepalive_time); + } + + /* get interval (in seconds) for statistics display (optional) */ + val = json_object_get_value(conf_obj, "stat_interval"); + if (val != NULL) { + stat_interval = (unsigned)json_value_get_number(val); + MSG("INFO: statistics display interval is configured to %u seconds\n", stat_interval); + } + + /* get time-out value (in ms) for upstream datagrams (optional) */ + val = json_object_get_value(conf_obj, "push_timeout_ms"); + if (val != NULL) { + push_timeout_half.tv_usec = 500 * (long int)json_value_get_number(val); + MSG("INFO: upstream PUSH_DATA time-out is configured to %u ms\n", (unsigned)(push_timeout_half.tv_usec / 500)); + } + + /* packet filtering parameters */ + val = json_object_get_value(conf_obj, "forward_crc_valid"); + if (json_value_get_type(val) == JSONBoolean) { + fwd_valid_pkt = (bool)json_value_get_boolean(val); + } + MSG("INFO: packets received with a valid CRC will%s be forwarded\n", (fwd_valid_pkt ? "" : " NOT")); + val = json_object_get_value(conf_obj, "forward_crc_error"); + if (json_value_get_type(val) == JSONBoolean) { + fwd_error_pkt = (bool)json_value_get_boolean(val); + } + MSG("INFO: packets received with a CRC error will%s be forwarded\n", (fwd_error_pkt ? "" : " NOT")); + val = json_object_get_value(conf_obj, "forward_crc_disabled"); + if (json_value_get_type(val) == JSONBoolean) { + fwd_nocrc_pkt = (bool)json_value_get_boolean(val); + } + MSG("INFO: packets received with no CRC will%s be forwarded\n", (fwd_nocrc_pkt ? "" : " NOT")); + + /* GPS module TTY path (optional) */ + str = json_object_get_string(conf_obj, "gps_tty_path"); + if (str != NULL) { + strncpy(gps_tty_path, str, sizeof gps_tty_path); + MSG("INFO: GPS serial port path is configured to \"%s\"\n", gps_tty_path); + } + + /* get reference coordinates */ + val = json_object_get_value(conf_obj, "ref_latitude"); + if (val != NULL) { + reference_coord.lat = (double)json_value_get_number(val); + MSG("INFO: Reference latitude is configured to %f deg\n", reference_coord.lat); + } + val = json_object_get_value(conf_obj, "ref_longitude"); + if (val != NULL) { + reference_coord.lon = (double)json_value_get_number(val); + MSG("INFO: Reference longitude is configured to %f deg\n", reference_coord.lon); + } + val = json_object_get_value(conf_obj, "ref_altitude"); + if (val != NULL) { + reference_coord.alt = (short)json_value_get_number(val); + MSG("INFO: Reference altitude is configured to %i meters\n", reference_coord.alt); + } + + /* Gateway GPS coordinates hardcoding (aka. faking) option */ + val = json_object_get_value(conf_obj, "fake_gps"); + if (json_value_get_type(val) == JSONBoolean) { + gps_fake_enable = (bool)json_value_get_boolean(val); + if (gps_fake_enable == true) { + MSG("INFO: fake GPS is enabled\n"); + } else { + MSG("INFO: fake GPS is disabled\n"); + } + } + + /* Beacon signal period (optional) */ + val = json_object_get_value(conf_obj, "beacon_period"); + if (val != NULL) { + beacon_period = (uint32_t)json_value_get_number(val); + if ((beacon_period > 0) && (beacon_period < 6)) { + MSG("ERROR: invalid configuration for Beacon period, must be >= 6s\n"); + return -1; + } else { + MSG("INFO: Beaconing period is configured to %u seconds\n", beacon_period); + } + } + + /* Beacon TX frequency (optional) */ + val = json_object_get_value(conf_obj, "beacon_freq_hz"); + if (val != NULL) { + beacon_freq_hz = (uint32_t)json_value_get_number(val); + MSG("INFO: Beaconing signal will be emitted at %u Hz\n", beacon_freq_hz); + } + + /* Number of beacon channels (optional) */ + val = json_object_get_value(conf_obj, "beacon_freq_nb"); + if (val != NULL) { + beacon_freq_nb = (uint8_t)json_value_get_number(val); + MSG("INFO: Beaconing channel number is set to %u\n", beacon_freq_nb); + } + + /* Frequency step between beacon channels (optional) */ + val = json_object_get_value(conf_obj, "beacon_freq_step"); + if (val != NULL) { + beacon_freq_step = (uint32_t)json_value_get_number(val); + MSG("INFO: Beaconing channel frequency step is set to %uHz\n", beacon_freq_step); + } + + /* Beacon datarate (optional) */ + val = json_object_get_value(conf_obj, "beacon_datarate"); + if (val != NULL) { + beacon_datarate = (uint8_t)json_value_get_number(val); + MSG("INFO: Beaconing datarate is set to SF%d\n", beacon_datarate); + } + + /* Beacon modulation bandwidth (optional) */ + val = json_object_get_value(conf_obj, "beacon_bw_hz"); + if (val != NULL) { + beacon_bw_hz = (uint32_t)json_value_get_number(val); + MSG("INFO: Beaconing modulation bandwidth is set to %dHz\n", beacon_bw_hz); + } + + /* Beacon TX power (optional) */ + val = json_object_get_value(conf_obj, "beacon_power"); + if (val != NULL) { + beacon_power = (int8_t)json_value_get_number(val); + MSG("INFO: Beaconing TX power is set to %ddBm\n", beacon_power); + } + + /* Beacon information descriptor (optional) */ + val = json_object_get_value(conf_obj, "beacon_infodesc"); + if (val != NULL) { + beacon_infodesc = (uint8_t)json_value_get_number(val); + MSG("INFO: Beaconing information descriptor is set to %u\n", beacon_infodesc); + } + + /* Auto-quit threshold (optional) */ + val = json_object_get_value(conf_obj, "autoquit_threshold"); + if (val != NULL) { + autoquit_threshold = (uint32_t)json_value_get_number(val); + MSG("INFO: Auto-quit after %u non-acknowledged PULL_DATA\n", autoquit_threshold); + } + + /* free JSON parsing data structure */ + json_value_free(root_val); + return 0; +} + +static uint16_t crc16(const uint8_t * data, unsigned size) { + const uint16_t crc_poly = 0x1021; + const uint16_t init_val = 0x0000; + uint16_t x = init_val; + unsigned i, j; + + if (data == NULL) { + return 0; + } + + for (i=0; i<size; ++i) { + x ^= (uint16_t)data[i] << 8; + for (j=0; j<8; ++j) { + x = (x & 0x8000) ? (x<<1) ^ crc_poly : (x<<1); + } + } + + return x; +} + +static double difftimespec(struct timespec end, struct timespec beginning) { + double x; + + x = 1E-9 * (double)(end.tv_nsec - beginning.tv_nsec); + x += (double)(end.tv_sec - beginning.tv_sec); + + return x; +} + +static int send_tx_ack(uint8_t token_h, uint8_t token_l, enum jit_error_e error) { + uint8_t buff_ack[64]; /* buffer to give feedback to server */ + int buff_index; + + /* reset buffer */ + memset(&buff_ack, 0, sizeof buff_ack); + + /* Prepare downlink feedback to be sent to server */ + buff_ack[0] = PROTOCOL_VERSION; + buff_ack[1] = token_h; + buff_ack[2] = token_l; + buff_ack[3] = PKT_TX_ACK; + *(uint32_t *)(buff_ack + 4) = net_mac_h; + *(uint32_t *)(buff_ack + 8) = net_mac_l; + buff_index = 12; /* 12-byte header */ + + /* Put no JSON string if there is nothing to report */ + if (error != JIT_ERROR_OK) { + /* start of JSON structure */ + memcpy((void *)(buff_ack + buff_index), (void *)"{\"txpk_ack\":{", 13); + buff_index += 13; + /* set downlink error status in JSON structure */ + memcpy((void *)(buff_ack + buff_index), (void *)"\"error\":", 8); + buff_index += 8; + switch (error) { + case JIT_ERROR_FULL: + case JIT_ERROR_COLLISION_PACKET: + memcpy((void *)(buff_ack + buff_index), (void *)"\"COLLISION_PACKET\"", 18); + buff_index += 18; + /* update stats */ + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_rejected_collision_packet += 1; + pthread_mutex_unlock(&mx_meas_dw); + break; + case JIT_ERROR_TOO_LATE: + memcpy((void *)(buff_ack + buff_index), (void *)"\"TOO_LATE\"", 10); + buff_index += 10; + /* update stats */ + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_rejected_too_late += 1; + pthread_mutex_unlock(&mx_meas_dw); + break; + case JIT_ERROR_TOO_EARLY: + memcpy((void *)(buff_ack + buff_index), (void *)"\"TOO_EARLY\"", 11); + buff_index += 11; + /* update stats */ + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_rejected_too_early += 1; + pthread_mutex_unlock(&mx_meas_dw); + break; + case JIT_ERROR_COLLISION_BEACON: + memcpy((void *)(buff_ack + buff_index), (void *)"\"COLLISION_BEACON\"", 18); + buff_index += 18; + /* update stats */ + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_rejected_collision_beacon += 1; + pthread_mutex_unlock(&mx_meas_dw); + break; + case JIT_ERROR_TX_FREQ: + memcpy((void *)(buff_ack + buff_index), (void *)"\"TX_FREQ\"", 9); + buff_index += 9; + break; + case JIT_ERROR_TX_POWER: + memcpy((void *)(buff_ack + buff_index), (void *)"\"TX_POWER\"", 10); + buff_index += 10; + break; + case JIT_ERROR_GPS_UNLOCKED: + memcpy((void *)(buff_ack + buff_index), (void *)"\"GPS_UNLOCKED\"", 14); + buff_index += 14; + break; + default: + memcpy((void *)(buff_ack + buff_index), (void *)"\"UNKNOWN\"", 9); + buff_index += 9; + break; + } + /* end of JSON structure */ + memcpy((void *)(buff_ack + buff_index), (void *)"}}", 2); + buff_index += 2; + } + + buff_ack[buff_index] = 0; /* add string terminator, for safety */ + + /* send datagram to server */ + return send(sock_down, (void *)buff_ack, buff_index, 0); +} + +/* -------------------------------------------------------------------------- */ +/* --- MAIN FUNCTION -------------------------------------------------------- */ + +int main(void) +{ + struct sigaction sigact; /* SIGQUIT&SIGINT&SIGTERM signal handling */ + int i; /* loop variable and temporary variable for return value */ + int x; + + /* configuration file related */ + char *global_cfg_path= "global_conf.json"; /* contain global (typ. network-wide) configuration */ + char *local_cfg_path = "local_conf.json"; /* contain node specific configuration, overwrite global parameters for parameters that are defined in both */ + char *debug_cfg_path = "debug_conf.json"; /* if present, all other configuration files are ignored */ + + /* threads */ + pthread_t thrid_up; + pthread_t thrid_down; + pthread_t thrid_gps; + pthread_t thrid_valid; + pthread_t thrid_jit; + pthread_t thrid_timersync; + + /* network socket creation */ + struct addrinfo hints; + struct addrinfo *result; /* store result of getaddrinfo */ + struct addrinfo *q; /* pointer to move into *result data */ + char host_name[64]; + char port_name[64]; + + /* variables to get local copies of measurements */ + uint32_t cp_nb_rx_rcv; + uint32_t cp_nb_rx_ok; + uint32_t cp_nb_rx_bad; + uint32_t cp_nb_rx_nocrc; + uint32_t cp_up_pkt_fwd; + uint32_t cp_up_network_byte; + uint32_t cp_up_payload_byte; + uint32_t cp_up_dgram_sent; + uint32_t cp_up_ack_rcv; + uint32_t cp_dw_pull_sent; + uint32_t cp_dw_ack_rcv; + uint32_t cp_dw_dgram_rcv; + uint32_t cp_dw_network_byte; + uint32_t cp_dw_payload_byte; + uint32_t cp_nb_tx_ok; + uint32_t cp_nb_tx_fail; + uint32_t cp_nb_tx_requested = 0; + uint32_t cp_nb_tx_rejected_collision_packet = 0; + uint32_t cp_nb_tx_rejected_collision_beacon = 0; + uint32_t cp_nb_tx_rejected_too_late = 0; + uint32_t cp_nb_tx_rejected_too_early = 0; + uint32_t cp_nb_beacon_queued = 0; + uint32_t cp_nb_beacon_sent = 0; + uint32_t cp_nb_beacon_rejected = 0; + + /* GPS coordinates variables */ + bool coord_ok = false; + struct coord_s cp_gps_coord = {0.0, 0.0, 0}; + + /* SX1301 data variables */ + uint32_t trig_tstamp; + + /* statistics variable */ + time_t t; + char stat_timestamp[24]; + float rx_ok_ratio; + float rx_bad_ratio; + float rx_nocrc_ratio; + float up_ack_ratio; + float dw_ack_ratio; + + /* display version informations */ + MSG("*** Beacon Packet Forwarder for Lora Gateway ***\nVersion: " VERSION_STRING "\n"); + MSG("*** Lora concentrator HAL library version info ***\n%s\n***\n", lgw_version_info()); + + /* display host endianness */ + #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + MSG("INFO: Little endian host\n"); + #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + MSG("INFO: Big endian host\n"); + #else + MSG("INFO: Host endianness unknown\n"); + #endif + + /* load configuration files */ + if (access(debug_cfg_path, R_OK) == 0) { /* if there is a debug conf, parse only the debug conf */ + MSG("INFO: found debug configuration file %s, parsing it\n", debug_cfg_path); + MSG("INFO: other configuration files will be ignored\n"); + x = parse_SX1301_configuration(debug_cfg_path); + if (x != 0) { + exit(EXIT_FAILURE); + } + x = parse_gateway_configuration(debug_cfg_path); + if (x != 0) { + exit(EXIT_FAILURE); + } + } else if (access(global_cfg_path, R_OK) == 0) { /* if there is a global conf, parse it and then try to parse local conf */ + MSG("INFO: found global configuration file %s, parsing it\n", global_cfg_path); + x = parse_SX1301_configuration(global_cfg_path); + if (x != 0) { + exit(EXIT_FAILURE); + } + x = parse_gateway_configuration(global_cfg_path); + if (x != 0) { + exit(EXIT_FAILURE); + } + if (access(local_cfg_path, R_OK) == 0) { + MSG("INFO: found local configuration file %s, parsing it\n", local_cfg_path); + MSG("INFO: redefined parameters will overwrite global parameters\n"); + parse_SX1301_configuration(local_cfg_path); + parse_gateway_configuration(local_cfg_path); + } + } else if (access(local_cfg_path, R_OK) == 0) { /* if there is only a local conf, parse it and that's all */ + MSG("INFO: found local configuration file %s, parsing it\n", local_cfg_path); + x = parse_SX1301_configuration(local_cfg_path); + if (x != 0) { + exit(EXIT_FAILURE); + } + x = parse_gateway_configuration(local_cfg_path); + if (x != 0) { + exit(EXIT_FAILURE); + } + } else { + MSG("ERROR: [main] failed to find any configuration file named %s, %s OR %s\n", global_cfg_path, local_cfg_path, debug_cfg_path); + exit(EXIT_FAILURE); + } + + /* Start GPS a.s.a.p., to allow it to lock */ + if (gps_tty_path[0] != '\0') { /* do not try to open GPS device if no path set */ + i = lgw_gps_enable(gps_tty_path, "ubx7", 0, &gps_tty_fd); /* HAL only supports u-blox 7 for now */ + if (i != LGW_GPS_SUCCESS) { + printf("WARNING: [main] impossible to open %s for GPS sync (check permissions)\n", gps_tty_path); + gps_enabled = false; + gps_ref_valid = false; + } else { + printf("INFO: [main] TTY port %s open for GPS synchronization\n", gps_tty_path); + gps_enabled = true; + gps_ref_valid = false; + } + } + + /* get timezone info */ + tzset(); + + /* sanity check on configuration variables */ + // TODO + + /* process some of the configuration variables */ + net_mac_h = htonl((uint32_t)(0xFFFFFFFF & (lgwm>>32))); + net_mac_l = htonl((uint32_t)(0xFFFFFFFF & lgwm )); + + /* prepare hints to open network sockets */ + memset(&hints, 0, sizeof hints); + hints.ai_family = AF_INET; /* WA: Forcing IPv4 as AF_UNSPEC makes connection on localhost to fail */ + hints.ai_socktype = SOCK_DGRAM; + + /* look for server address w/ upstream port */ + i = getaddrinfo(serv_addr, serv_port_up, &hints, &result); + if (i != 0) { + MSG("ERROR: [up] getaddrinfo on address %s (PORT %s) returned %s\n", serv_addr, serv_port_up, gai_strerror(i)); + exit(EXIT_FAILURE); + } + + /* try to open socket for upstream traffic */ + for (q=result; q!=NULL; q=q->ai_next) { + sock_up = socket(q->ai_family, q->ai_socktype,q->ai_protocol); + if (sock_up == -1) continue; /* try next field */ + else break; /* success, get out of loop */ + } + if (q == NULL) { + MSG("ERROR: [up] failed to open socket to any of server %s addresses (port %s)\n", serv_addr, serv_port_up); + i = 1; + for (q=result; q!=NULL; q=q->ai_next) { + getnameinfo(q->ai_addr, q->ai_addrlen, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + MSG("INFO: [up] result %i host:%s service:%s\n", i, host_name, port_name); + ++i; + } + exit(EXIT_FAILURE); + } + + /* connect so we can send/receive packet with the server only */ + i = connect(sock_up, q->ai_addr, q->ai_addrlen); + if (i != 0) { + MSG("ERROR: [up] connect returned %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + freeaddrinfo(result); + + /* look for server address w/ downstream port */ + i = getaddrinfo(serv_addr, serv_port_down, &hints, &result); + if (i != 0) { + MSG("ERROR: [down] getaddrinfo on address %s (port %s) returned %s\n", serv_addr, serv_port_up, gai_strerror(i)); + exit(EXIT_FAILURE); + } + + /* try to open socket for downstream traffic */ + for (q=result; q!=NULL; q=q->ai_next) { + sock_down = socket(q->ai_family, q->ai_socktype,q->ai_protocol); + if (sock_down == -1) continue; /* try next field */ + else break; /* success, get out of loop */ + } + if (q == NULL) { + MSG("ERROR: [down] failed to open socket to any of server %s addresses (port %s)\n", serv_addr, serv_port_up); + i = 1; + for (q=result; q!=NULL; q=q->ai_next) { + getnameinfo(q->ai_addr, q->ai_addrlen, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + MSG("INFO: [down] result %i host:%s service:%s\n", i, host_name, port_name); + ++i; + } + exit(EXIT_FAILURE); + } + + /* connect so we can send/receive packet with the server only */ + i = connect(sock_down, q->ai_addr, q->ai_addrlen); + if (i != 0) { + MSG("ERROR: [down] connect returned %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + freeaddrinfo(result); + + /* starting the concentrator */ + i = lgw_start(); + if (i == LGW_HAL_SUCCESS) { + MSG("INFO: [main] concentrator started, packet can now be received\n"); + } else { + MSG("ERROR: [main] failed to start the concentrator\n"); + exit(EXIT_FAILURE); + } + + /* spawn threads to manage upstream and downstream */ + i = pthread_create( &thrid_up, NULL, (void * (*)(void *))thread_up, NULL); + if (i != 0) { + MSG("ERROR: [main] impossible to create upstream thread\n"); + exit(EXIT_FAILURE); + } + i = pthread_create( &thrid_down, NULL, (void * (*)(void *))thread_down, NULL); + if (i != 0) { + MSG("ERROR: [main] impossible to create downstream thread\n"); + exit(EXIT_FAILURE); + } + i = pthread_create( &thrid_jit, NULL, (void * (*)(void *))thread_jit, NULL); + if (i != 0) { + MSG("ERROR: [main] impossible to create JIT thread\n"); + exit(EXIT_FAILURE); + } + i = pthread_create( &thrid_timersync, NULL, (void * (*)(void *))thread_timersync, NULL); + if (i != 0) { + MSG("ERROR: [main] impossible to create Timer Sync thread\n"); + exit(EXIT_FAILURE); + } + + /* spawn thread to manage GPS */ + if (gps_enabled == true) { + i = pthread_create( &thrid_gps, NULL, (void * (*)(void *))thread_gps, NULL); + if (i != 0) { + MSG("ERROR: [main] impossible to create GPS thread\n"); + exit(EXIT_FAILURE); + } + i = pthread_create( &thrid_valid, NULL, (void * (*)(void *))thread_valid, NULL); + if (i != 0) { + MSG("ERROR: [main] impossible to create validation thread\n"); + exit(EXIT_FAILURE); + } + } + + /* configure signal handling */ + sigemptyset(&sigact.sa_mask); + sigact.sa_flags = 0; + sigact.sa_handler = sig_handler; + sigaction(SIGQUIT, &sigact, NULL); /* Ctrl-\ */ + sigaction(SIGINT, &sigact, NULL); /* Ctrl-C */ + sigaction(SIGTERM, &sigact, NULL); /* default "kill" command */ + + /* main loop task : statistics collection */ + while (!exit_sig && !quit_sig) { + /* wait for next reporting interval */ + wait_ms(1000 * stat_interval); + + /* get timestamp for statistics */ + t = time(NULL); + strftime(stat_timestamp, sizeof stat_timestamp, "%F %T %Z", gmtime(&t)); + + /* access upstream statistics, copy and reset them */ + pthread_mutex_lock(&mx_meas_up); + cp_nb_rx_rcv = meas_nb_rx_rcv; + cp_nb_rx_ok = meas_nb_rx_ok; + cp_nb_rx_bad = meas_nb_rx_bad; + cp_nb_rx_nocrc = meas_nb_rx_nocrc; + cp_up_pkt_fwd = meas_up_pkt_fwd; + cp_up_network_byte = meas_up_network_byte; + cp_up_payload_byte = meas_up_payload_byte; + cp_up_dgram_sent = meas_up_dgram_sent; + cp_up_ack_rcv = meas_up_ack_rcv; + meas_nb_rx_rcv = 0; + meas_nb_rx_ok = 0; + meas_nb_rx_bad = 0; + meas_nb_rx_nocrc = 0; + meas_up_pkt_fwd = 0; + meas_up_network_byte = 0; + meas_up_payload_byte = 0; + meas_up_dgram_sent = 0; + meas_up_ack_rcv = 0; + pthread_mutex_unlock(&mx_meas_up); + if (cp_nb_rx_rcv > 0) { + rx_ok_ratio = (float)cp_nb_rx_ok / (float)cp_nb_rx_rcv; + rx_bad_ratio = (float)cp_nb_rx_bad / (float)cp_nb_rx_rcv; + rx_nocrc_ratio = (float)cp_nb_rx_nocrc / (float)cp_nb_rx_rcv; + } else { + rx_ok_ratio = 0.0; + rx_bad_ratio = 0.0; + rx_nocrc_ratio = 0.0; + } + if (cp_up_dgram_sent > 0) { + up_ack_ratio = (float)cp_up_ack_rcv / (float)cp_up_dgram_sent; + } else { + up_ack_ratio = 0.0; + } + + /* access downstream statistics, copy and reset them */ + pthread_mutex_lock(&mx_meas_dw); + cp_dw_pull_sent = meas_dw_pull_sent; + cp_dw_ack_rcv = meas_dw_ack_rcv; + cp_dw_dgram_rcv = meas_dw_dgram_rcv; + cp_dw_network_byte = meas_dw_network_byte; + cp_dw_payload_byte = meas_dw_payload_byte; + cp_nb_tx_ok = meas_nb_tx_ok; + cp_nb_tx_fail = meas_nb_tx_fail; + cp_nb_tx_requested += meas_nb_tx_requested; + cp_nb_tx_rejected_collision_packet += meas_nb_tx_rejected_collision_packet; + cp_nb_tx_rejected_collision_beacon += meas_nb_tx_rejected_collision_beacon; + cp_nb_tx_rejected_too_late += meas_nb_tx_rejected_too_late; + cp_nb_tx_rejected_too_early += meas_nb_tx_rejected_too_early; + cp_nb_beacon_queued += meas_nb_beacon_queued; + cp_nb_beacon_sent += meas_nb_beacon_sent; + cp_nb_beacon_rejected += meas_nb_beacon_rejected; + meas_dw_pull_sent = 0; + meas_dw_ack_rcv = 0; + meas_dw_dgram_rcv = 0; + meas_dw_network_byte = 0; + meas_dw_payload_byte = 0; + meas_nb_tx_ok = 0; + meas_nb_tx_fail = 0; + meas_nb_tx_requested = 0; + meas_nb_tx_rejected_collision_packet = 0; + meas_nb_tx_rejected_collision_beacon = 0; + meas_nb_tx_rejected_too_late = 0; + meas_nb_tx_rejected_too_early = 0; + meas_nb_beacon_queued = 0; + meas_nb_beacon_sent = 0; + meas_nb_beacon_rejected = 0; + pthread_mutex_unlock(&mx_meas_dw); + if (cp_dw_pull_sent > 0) { + dw_ack_ratio = (float)cp_dw_ack_rcv / (float)cp_dw_pull_sent; + } else { + dw_ack_ratio = 0.0; + } + + /* access GPS statistics, copy them */ + if (gps_enabled == true) { + pthread_mutex_lock(&mx_meas_gps); + coord_ok = gps_coord_valid; + cp_gps_coord = meas_gps_coord; + pthread_mutex_unlock(&mx_meas_gps); + } + + /* overwrite with reference coordinates if function is enabled */ + if (gps_fake_enable == true) { + cp_gps_coord = reference_coord; + } + + /* display a report */ + printf("\n##### %s #####\n", stat_timestamp); + printf("### [UPSTREAM] ###\n"); + printf("# RF packets received by concentrator: %u\n", cp_nb_rx_rcv); + printf("# CRC_OK: %.2f%%, CRC_FAIL: %.2f%%, NO_CRC: %.2f%%\n", 100.0 * rx_ok_ratio, 100.0 * rx_bad_ratio, 100.0 * rx_nocrc_ratio); + printf("# RF packets forwarded: %u (%u bytes)\n", cp_up_pkt_fwd, cp_up_payload_byte); + printf("# PUSH_DATA datagrams sent: %u (%u bytes)\n", cp_up_dgram_sent, cp_up_network_byte); + printf("# PUSH_DATA acknowledged: %.2f%%\n", 100.0 * up_ack_ratio); + printf("### [DOWNSTREAM] ###\n"); + printf("# PULL_DATA sent: %u (%.2f%% acknowledged)\n", cp_dw_pull_sent, 100.0 * dw_ack_ratio); + printf("# PULL_RESP(onse) datagrams received: %u (%u bytes)\n", cp_dw_dgram_rcv, cp_dw_network_byte); + printf("# RF packets sent to concentrator: %u (%u bytes)\n", (cp_nb_tx_ok+cp_nb_tx_fail), cp_dw_payload_byte); + printf("# TX errors: %u\n", cp_nb_tx_fail); + if (cp_nb_tx_requested != 0 ) { + printf("# TX rejected (collision packet): %.2f%% (req:%u, rej:%u)\n", 100.0 * cp_nb_tx_rejected_collision_packet / cp_nb_tx_requested, cp_nb_tx_requested, cp_nb_tx_rejected_collision_packet); + printf("# TX rejected (collision beacon): %.2f%% (req:%u, rej:%u)\n", 100.0 * cp_nb_tx_rejected_collision_beacon / cp_nb_tx_requested, cp_nb_tx_requested, cp_nb_tx_rejected_collision_beacon); + printf("# TX rejected (too late): %.2f%% (req:%u, rej:%u)\n", 100.0 * cp_nb_tx_rejected_too_late / cp_nb_tx_requested, cp_nb_tx_requested, cp_nb_tx_rejected_too_late); + printf("# TX rejected (too early): %.2f%% (req:%u, rej:%u)\n", 100.0 * cp_nb_tx_rejected_too_early / cp_nb_tx_requested, cp_nb_tx_requested, cp_nb_tx_rejected_too_early); + } + printf("# BEACON queued: %u\n", cp_nb_beacon_queued); + printf("# BEACON sent so far: %u\n", cp_nb_beacon_sent); + printf("# BEACON rejected: %u\n", cp_nb_beacon_rejected); + printf("### [JIT] ###\n"); + /* get timestamp captured on PPM pulse */ + pthread_mutex_lock(&mx_concent); + i = lgw_get_trigcnt(&trig_tstamp); + pthread_mutex_unlock(&mx_concent); + if (i != LGW_HAL_SUCCESS) { + printf("# SX1301 time (PPS): unknown\n"); + } else { + printf("# SX1301 time (PPS): %u\n", trig_tstamp); + } + jit_print_queue (&jit_queue, false, DEBUG_LOG); + printf("### [GPS] ###\n"); + if (gps_enabled == true) { + /* no need for mutex, display is not critical */ + if (gps_ref_valid == true) { + printf("# Valid time reference (age: %li sec)\n", (long)difftime(time(NULL), time_reference_gps.systime)); + } else { + printf("# Invalid time reference (age: %li sec)\n", (long)difftime(time(NULL), time_reference_gps.systime)); + } + if (coord_ok == true) { + printf("# GPS coordinates: latitude %.5f, longitude %.5f, altitude %i m\n", cp_gps_coord.lat, cp_gps_coord.lon, cp_gps_coord.alt); + } else { + printf("# no valid GPS coordinates available yet\n"); + } + } else if (gps_fake_enable == true) { + printf("# GPS *FAKE* coordinates: latitude %.5f, longitude %.5f, altitude %i m\n", cp_gps_coord.lat, cp_gps_coord.lon, cp_gps_coord.alt); + } else { + printf("# GPS sync is disabled\n"); + } + printf("##### END #####\n"); + + /* generate a JSON report (will be sent to server by upstream thread) */ + pthread_mutex_lock(&mx_stat_rep); + if (((gps_enabled == true) && (coord_ok == true)) || (gps_fake_enable == true)) { + snprintf(status_report, STATUS_SIZE, "\"stat\":{\"time\":\"%s\",\"lati\":%.5f,\"long\":%.5f,\"alti\":%i,\"rxnb\":%u,\"rxok\":%u,\"rxfw\":%u,\"ackr\":%.1f,\"dwnb\":%u,\"txnb\":%u}", stat_timestamp, cp_gps_coord.lat, cp_gps_coord.lon, cp_gps_coord.alt, cp_nb_rx_rcv, cp_nb_rx_ok, cp_up_pkt_fwd, 100.0 * up_ack_ratio, cp_dw_dgram_rcv, cp_nb_tx_ok); + } else { + snprintf(status_report, STATUS_SIZE, "\"stat\":{\"time\":\"%s\",\"rxnb\":%u,\"rxok\":%u,\"rxfw\":%u,\"ackr\":%.1f,\"dwnb\":%u,\"txnb\":%u}", stat_timestamp, cp_nb_rx_rcv, cp_nb_rx_ok, cp_up_pkt_fwd, 100.0 * up_ack_ratio, cp_dw_dgram_rcv, cp_nb_tx_ok); + } + report_ready = true; + pthread_mutex_unlock(&mx_stat_rep); + } + + /* wait for upstream thread to finish (1 fetch cycle max) */ + pthread_join(thrid_up, NULL); + pthread_cancel(thrid_down); /* don't wait for downstream thread */ + pthread_cancel(thrid_jit); /* don't wait for jit thread */ + pthread_cancel(thrid_timersync); /* don't wait for timer sync thread */ + if (gps_enabled == true) { + pthread_cancel(thrid_gps); /* don't wait for GPS thread */ + pthread_cancel(thrid_valid); /* don't wait for validation thread */ + + i = lgw_gps_disable(gps_tty_fd); + if (i == LGW_HAL_SUCCESS) { + MSG("INFO: GPS closed successfully\n"); + } else { + MSG("WARNING: failed to close GPS successfully\n"); + } + } + + /* if an exit signal was received, try to quit properly */ + if (exit_sig) { + /* shut down network sockets */ + shutdown(sock_up, SHUT_RDWR); + shutdown(sock_down, SHUT_RDWR); + /* stop the hardware */ + i = lgw_stop(); + if (i == LGW_HAL_SUCCESS) { + MSG("INFO: concentrator stopped successfully\n"); + } else { + MSG("WARNING: failed to stop concentrator successfully\n"); + } + } + + MSG("INFO: Exiting packet forwarder program\n"); + exit(EXIT_SUCCESS); +} + +/* -------------------------------------------------------------------------- */ +/* --- THREAD 1: RECEIVING PACKETS AND FORWARDING THEM ---------------------- */ + +void thread_up(void) { + int i, j; /* loop variables */ + unsigned pkt_in_dgram; /* nb on Lora packet in the current datagram */ + + /* allocate memory for packet fetching and processing */ + struct lgw_pkt_rx_s rxpkt[NB_PKT_MAX]; /* array containing inbound packets + metadata */ + struct lgw_pkt_rx_s *p; /* pointer on a RX packet */ + int nb_pkt; + + /* local copy of GPS time reference */ + bool ref_ok = false; /* determine if GPS time reference must be used or not */ + struct tref local_ref; /* time reference used for UTC <-> timestamp conversion */ + + /* data buffers */ + uint8_t buff_up[TX_BUFF_SIZE]; /* buffer to compose the upstream packet */ + int buff_index; + uint8_t buff_ack[32]; /* buffer to receive acknowledges */ + + /* protocol variables */ + uint8_t token_h; /* random token for acknowledgement matching */ + uint8_t token_l; /* random token for acknowledgement matching */ + + /* ping measurement variables */ + struct timespec send_time; + struct timespec recv_time; + + /* GPS synchronization variables */ + struct timespec pkt_utc_time; + struct tm * x; /* broken-up UTC time */ + struct timespec pkt_gps_time; + uint64_t pkt_gps_time_ms; + + /* report management variable */ + bool send_report = false; + + /* mote info variables */ + uint32_t mote_addr = 0; + uint16_t mote_fcnt = 0; + + /* set upstream socket RX timeout */ + i = setsockopt(sock_up, SOL_SOCKET, SO_RCVTIMEO, (void *)&push_timeout_half, sizeof push_timeout_half); + if (i != 0) { + MSG("ERROR: [up] setsockopt returned %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + + /* pre-fill the data buffer with fixed fields */ + buff_up[0] = PROTOCOL_VERSION; + buff_up[3] = PKT_PUSH_DATA; + *(uint32_t *)(buff_up + 4) = net_mac_h; + *(uint32_t *)(buff_up + 8) = net_mac_l; + + while (!exit_sig && !quit_sig) { + + /* fetch packets */ + pthread_mutex_lock(&mx_concent); + nb_pkt = lgw_receive(NB_PKT_MAX, rxpkt); + pthread_mutex_unlock(&mx_concent); + if (nb_pkt == LGW_HAL_ERROR) { + MSG("ERROR: [up] failed packet fetch, exiting\n"); + exit(EXIT_FAILURE); + } + + /* check if there are status report to send */ + send_report = report_ready; /* copy the variable so it doesn't change mid-function */ + /* no mutex, we're only reading */ + + /* wait a short time if no packets, nor status report */ + if ((nb_pkt == 0) && (send_report == false)) { + wait_ms(FETCH_SLEEP_MS); + continue; + } + + /* get a copy of GPS time reference (avoid 1 mutex per packet) */ + if ((nb_pkt > 0) && (gps_enabled == true)) { + pthread_mutex_lock(&mx_timeref); + ref_ok = gps_ref_valid; + local_ref = time_reference_gps; + pthread_mutex_unlock(&mx_timeref); + } else { + ref_ok = false; + } + + /* start composing datagram with the header */ + token_h = (uint8_t)rand(); /* random token */ + token_l = (uint8_t)rand(); /* random token */ + buff_up[1] = token_h; + buff_up[2] = token_l; + buff_index = 12; /* 12-byte header */ + + /* start of JSON structure */ + memcpy((void *)(buff_up + buff_index), (void *)"{\"rxpk\":[", 9); + buff_index += 9; + + /* serialize Lora packets metadata and payload */ + pkt_in_dgram = 0; + for (i=0; i < nb_pkt; ++i) { + p = &rxpkt[i]; + + /* Get mote information from current packet (addr, fcnt) */ + /* FHDR - DevAddr */ + mote_addr = p->payload[1]; + mote_addr |= p->payload[2] << 8; + mote_addr |= p->payload[3] << 16; + mote_addr |= p->payload[4] << 24; + /* FHDR - FCnt */ + mote_fcnt = p->payload[6]; + mote_fcnt |= p->payload[7] << 8; + + /* basic packet filtering */ + pthread_mutex_lock(&mx_meas_up); + meas_nb_rx_rcv += 1; + switch(p->status) { + case STAT_CRC_OK: + meas_nb_rx_ok += 1; + printf( "\nINFO: Received pkt from mote: %08X (fcnt=%u)\n", mote_addr, mote_fcnt ); + if (!fwd_valid_pkt) { + pthread_mutex_unlock(&mx_meas_up); + continue; /* skip that packet */ + } + break; + case STAT_CRC_BAD: + meas_nb_rx_bad += 1; + if (!fwd_error_pkt) { + pthread_mutex_unlock(&mx_meas_up); + continue; /* skip that packet */ + } + break; + case STAT_NO_CRC: + meas_nb_rx_nocrc += 1; + if (!fwd_nocrc_pkt) { + pthread_mutex_unlock(&mx_meas_up); + continue; /* skip that packet */ + } + break; + default: + MSG("WARNING: [up] received packet with unknown status %u (size %u, modulation %u, BW %u, DR %u, RSSI %.1f)\n", p->status, p->size, p->modulation, p->bandwidth, p->datarate, p->rssi); + pthread_mutex_unlock(&mx_meas_up); + continue; /* skip that packet */ + // exit(EXIT_FAILURE); + } + meas_up_pkt_fwd += 1; + meas_up_payload_byte += p->size; + pthread_mutex_unlock(&mx_meas_up); + + /* Start of packet, add inter-packet separator if necessary */ + if (pkt_in_dgram == 0) { + buff_up[buff_index] = '{'; + ++buff_index; + } else { + buff_up[buff_index] = ','; + buff_up[buff_index+1] = '{'; + buff_index += 2; + } + + /* RAW timestamp, 8-17 useful chars */ + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, "\"tmst\":%u", p->count_us); + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* Packet RX time (GPS based), 37 useful chars */ + if (ref_ok == true) { + /* convert packet timestamp to UTC absolute time */ + j = lgw_cnt2utc(local_ref, p->count_us, &pkt_utc_time); + if (j == LGW_GPS_SUCCESS) { + /* split the UNIX timestamp to its calendar components */ + x = gmtime(&(pkt_utc_time.tv_sec)); + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, ",\"time\":\"%04i-%02i-%02iT%02i:%02i:%02i.%06liZ\"", (x->tm_year)+1900, (x->tm_mon)+1, x->tm_mday, x->tm_hour, x->tm_min, x->tm_sec, (pkt_utc_time.tv_nsec)/1000); /* ISO 8601 format */ + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + } + /* convert packet timestamp to GPS absolute time */ + j = lgw_cnt2gps(local_ref, p->count_us, &pkt_gps_time); + if (j == LGW_GPS_SUCCESS) { + pkt_gps_time_ms = pkt_gps_time.tv_sec * 1E3 + pkt_gps_time.tv_nsec / 1E6; + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, ",\"tmms\":%llu", + pkt_gps_time_ms); /* GPS time in milliseconds since 06.Jan.1980 */ + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + } + } + + /* Packet concentrator channel, RF chain & RX frequency, 34-36 useful chars */ + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, ",\"chan\":%1u,\"rfch\":%1u,\"freq\":%.6lf", p->if_chain, p->rf_chain, ((double)p->freq_hz / 1e6)); + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* Packet status, 9-10 useful chars */ + switch (p->status) { + case STAT_CRC_OK: + memcpy((void *)(buff_up + buff_index), (void *)",\"stat\":1", 9); + buff_index += 9; + break; + case STAT_CRC_BAD: + memcpy((void *)(buff_up + buff_index), (void *)",\"stat\":-1", 10); + buff_index += 10; + break; + case STAT_NO_CRC: + memcpy((void *)(buff_up + buff_index), (void *)",\"stat\":0", 9); + buff_index += 9; + break; + default: + MSG("ERROR: [up] received packet with unknown status\n"); + memcpy((void *)(buff_up + buff_index), (void *)",\"stat\":?", 9); + buff_index += 9; + exit(EXIT_FAILURE); + } + + /* Packet modulation, 13-14 useful chars */ + if (p->modulation == MOD_LORA) { + memcpy((void *)(buff_up + buff_index), (void *)",\"modu\":\"LORA\"", 14); + buff_index += 14; + + /* Lora datarate & bandwidth, 16-19 useful chars */ + switch (p->datarate) { + case DR_LORA_SF7: + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF7", 12); + buff_index += 12; + break; + case DR_LORA_SF8: + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF8", 12); + buff_index += 12; + break; + case DR_LORA_SF9: + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF9", 12); + buff_index += 12; + break; + case DR_LORA_SF10: + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF10", 13); + buff_index += 13; + break; + case DR_LORA_SF11: + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF11", 13); + buff_index += 13; + break; + case DR_LORA_SF12: + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF12", 13); + buff_index += 13; + break; + default: + MSG("ERROR: [up] lora packet with unknown datarate\n"); + memcpy((void *)(buff_up + buff_index), (void *)",\"datr\":\"SF?", 12); + buff_index += 12; + exit(EXIT_FAILURE); + } + switch (p->bandwidth) { + case BW_125KHZ: + memcpy((void *)(buff_up + buff_index), (void *)"BW125\"", 6); + buff_index += 6; + break; + case BW_250KHZ: + memcpy((void *)(buff_up + buff_index), (void *)"BW250\"", 6); + buff_index += 6; + break; + case BW_500KHZ: + memcpy((void *)(buff_up + buff_index), (void *)"BW500\"", 6); + buff_index += 6; + break; + default: + MSG("ERROR: [up] lora packet with unknown bandwidth\n"); + memcpy((void *)(buff_up + buff_index), (void *)"BW?\"", 4); + buff_index += 4; + exit(EXIT_FAILURE); + } + + /* Packet ECC coding rate, 11-13 useful chars */ + switch (p->coderate) { + case CR_LORA_4_5: + memcpy((void *)(buff_up + buff_index), (void *)",\"codr\":\"4/5\"", 13); + buff_index += 13; + break; + case CR_LORA_4_6: + memcpy((void *)(buff_up + buff_index), (void *)",\"codr\":\"4/6\"", 13); + buff_index += 13; + break; + case CR_LORA_4_7: + memcpy((void *)(buff_up + buff_index), (void *)",\"codr\":\"4/7\"", 13); + buff_index += 13; + break; + case CR_LORA_4_8: + memcpy((void *)(buff_up + buff_index), (void *)",\"codr\":\"4/8\"", 13); + buff_index += 13; + break; + case 0: /* treat the CR0 case (mostly false sync) */ + memcpy((void *)(buff_up + buff_index), (void *)",\"codr\":\"OFF\"", 13); + buff_index += 13; + break; + default: + MSG("ERROR: [up] lora packet with unknown coderate\n"); + memcpy((void *)(buff_up + buff_index), (void *)",\"codr\":\"?\"", 11); + buff_index += 11; + exit(EXIT_FAILURE); + } + + /* Lora SNR, 11-13 useful chars */ + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, ",\"lsnr\":%.1f", p->snr); + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + } else if (p->modulation == MOD_FSK) { + memcpy((void *)(buff_up + buff_index), (void *)",\"modu\":\"FSK\"", 13); + buff_index += 13; + + /* FSK datarate, 11-14 useful chars */ + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, ",\"datr\":%u", p->datarate); + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + } else { + MSG("ERROR: [up] received packet with unknown modulation\n"); + exit(EXIT_FAILURE); + } + + /* Packet RSSI, payload size, 18-23 useful chars */ + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, ",\"rssi\":%.0f,\"size\":%u", p->rssi, p->size); + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* Packet base64-encoded payload, 14-350 useful chars */ + memcpy((void *)(buff_up + buff_index), (void *)",\"data\":\"", 9); + buff_index += 9; + j = bin_to_b64(p->payload, p->size, (char *)(buff_up + buff_index), 341); /* 255 bytes = 340 chars in b64 + null char */ + if (j>=0) { + buff_index += j; + } else { + MSG("ERROR: [up] bin_to_b64 failed line %u\n", (__LINE__ - 5)); + exit(EXIT_FAILURE); + } + buff_up[buff_index] = '"'; + ++buff_index; + + /* End of packet serialization */ + buff_up[buff_index] = '}'; + ++buff_index; + ++pkt_in_dgram; + } + + /* restart fetch sequence without sending empty JSON if all packets have been filtered out */ + if (pkt_in_dgram == 0) { + if (send_report == true) { + /* need to clean up the beginning of the payload */ + buff_index -= 8; /* removes "rxpk":[ */ + } else { + /* all packet have been filtered out and no report, restart loop */ + continue; + } + } else { + /* end of packet array */ + buff_up[buff_index] = ']'; + ++buff_index; + /* add separator if needed */ + if (send_report == true) { + buff_up[buff_index] = ','; + ++buff_index; + } + } + + /* add status report if a new one is available */ + if (send_report == true) { + pthread_mutex_lock(&mx_stat_rep); + report_ready = false; + j = snprintf((char *)(buff_up + buff_index), TX_BUFF_SIZE-buff_index, "%s", status_report); + pthread_mutex_unlock(&mx_stat_rep); + if (j > 0) { + buff_index += j; + } else { + MSG("ERROR: [up] snprintf failed line %u\n", (__LINE__ - 5)); + exit(EXIT_FAILURE); + } + } + + /* end of JSON datagram payload */ + buff_up[buff_index] = '}'; + ++buff_index; + buff_up[buff_index] = 0; /* add string terminator, for safety */ + + printf("\nJSON up: %s\n", (char *)(buff_up + 12)); /* DEBUG: display JSON payload */ + + /* send datagram to server */ + send(sock_up, (void *)buff_up, buff_index, 0); + clock_gettime(CLOCK_MONOTONIC, &send_time); + pthread_mutex_lock(&mx_meas_up); + meas_up_dgram_sent += 1; + meas_up_network_byte += buff_index; + + /* wait for acknowledge (in 2 times, to catch extra packets) */ + for (i=0; i<2; ++i) { + j = recv(sock_up, (void *)buff_ack, sizeof buff_ack, 0); + clock_gettime(CLOCK_MONOTONIC, &recv_time); + if (j == -1) { + if (errno == EAGAIN) { /* timeout */ + continue; + } else { /* server connection error */ + break; + } + } else if ((j < 4) || (buff_ack[0] != PROTOCOL_VERSION) || (buff_ack[3] != PKT_PUSH_ACK)) { + //MSG("WARNING: [up] ignored invalid non-ACL packet\n"); + continue; + } else if ((buff_ack[1] != token_h) || (buff_ack[2] != token_l)) { + //MSG("WARNING: [up] ignored out-of sync ACK packet\n"); + continue; + } else { + MSG("INFO: [up] PUSH_ACK received in %i ms\n", (int)(1000 * difftimespec(recv_time, send_time))); + meas_up_ack_rcv += 1; + break; + } + } + pthread_mutex_unlock(&mx_meas_up); + } + MSG("\nINFO: End of upstream thread\n"); +} + +/* -------------------------------------------------------------------------- */ +/* --- THREAD 2: POLLING SERVER AND ENQUEUING PACKETS IN JIT QUEUE ---------- */ + +void thread_down(void) { + int i; /* loop variables */ + + /* configuration and metadata for an outbound packet */ + struct lgw_pkt_tx_s txpkt; + bool sent_immediate = false; /* option to sent the packet immediately */ + + /* local timekeeping variables */ + struct timespec send_time; /* time of the pull request */ + struct timespec recv_time; /* time of return from recv socket call */ + + /* data buffers */ + uint8_t buff_down[1000]; /* buffer to receive downstream packets */ + uint8_t buff_req[12]; /* buffer to compose pull requests */ + int msg_len; + + /* protocol variables */ + uint8_t token_h; /* random token for acknowledgement matching */ + uint8_t token_l; /* random token for acknowledgement matching */ + bool req_ack = false; /* keep track of whether PULL_DATA was acknowledged or not */ + + /* JSON parsing variables */ + JSON_Value *root_val = NULL; + JSON_Object *txpk_obj = NULL; + JSON_Value *val = NULL; /* needed to detect the absence of some fields */ + const char *str; /* pointer to sub-strings in the JSON data */ + short x0, x1; + uint64_t x2; + double x3, x4; + + /* variables to send on GPS timestamp */ + struct tref local_ref; /* time reference used for GPS <-> timestamp conversion */ + struct timespec gps_tx; /* GPS time that needs to be converted to timestamp */ + + /* beacon variables */ + struct lgw_pkt_tx_s beacon_pkt; + uint8_t beacon_chan; + uint8_t beacon_loop; + size_t beacon_RFU1_size = 0; + size_t beacon_RFU2_size = 0; + uint8_t beacon_pyld_idx = 0; + time_t diff_beacon_time; + struct timespec next_beacon_gps_time; /* gps time of next beacon packet */ + struct timespec last_beacon_gps_time; /* gps time of last enqueued beacon packet */ + int retry; + + /* beacon data fields, byte 0 is Least Significant Byte */ + int32_t field_latitude; /* 3 bytes, derived from reference latitude */ + int32_t field_longitude; /* 3 bytes, derived from reference longitude */ + uint16_t field_crc1, field_crc2; + + /* auto-quit variable */ + uint32_t autoquit_cnt = 0; /* count the number of PULL_DATA sent since the latest PULL_ACK */ + + /* Just In Time downlink */ + struct timeval current_unix_time; + struct timeval current_concentrator_time; + enum jit_error_e jit_result = JIT_ERROR_OK; + enum jit_pkt_type_e downlink_type; + + /* set downstream socket RX timeout */ + i = setsockopt(sock_down, SOL_SOCKET, SO_RCVTIMEO, (void *)&pull_timeout, sizeof pull_timeout); + if (i != 0) { + MSG("ERROR: [down] setsockopt returned %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + + /* pre-fill the pull request buffer with fixed fields */ + buff_req[0] = PROTOCOL_VERSION; + buff_req[3] = PKT_PULL_DATA; + *(uint32_t *)(buff_req + 4) = net_mac_h; + *(uint32_t *)(buff_req + 8) = net_mac_l; + + /* beacon variables initialization */ + last_beacon_gps_time.tv_sec = 0; + last_beacon_gps_time.tv_nsec = 0; + + /* beacon packet parameters */ + beacon_pkt.tx_mode = ON_GPS; /* send on PPS pulse */ + beacon_pkt.rf_chain = 0; /* antenna A */ + beacon_pkt.rf_power = beacon_power; + beacon_pkt.modulation = MOD_LORA; + switch (beacon_bw_hz) { + case 125000: + beacon_pkt.bandwidth = BW_125KHZ; + break; + case 500000: + beacon_pkt.bandwidth = BW_500KHZ; + break; + default: + /* should not happen */ + MSG("ERROR: unsupported bandwidth for beacon\n"); + exit(EXIT_FAILURE); + } + switch (beacon_datarate) { + case 8: + beacon_pkt.datarate = DR_LORA_SF8; + beacon_RFU1_size = 1; + beacon_RFU2_size = 3; + break; + case 9: + beacon_pkt.datarate = DR_LORA_SF9; + beacon_RFU1_size = 2; + beacon_RFU2_size = 0; + break; + case 10: + beacon_pkt.datarate = DR_LORA_SF10; + beacon_RFU1_size = 3; + beacon_RFU2_size = 1; + break; + case 12: + beacon_pkt.datarate = DR_LORA_SF12; + beacon_RFU1_size = 5; + beacon_RFU2_size = 3; + break; + default: + /* should not happen */ + MSG("ERROR: unsupported datarate for beacon\n"); + exit(EXIT_FAILURE); + } + beacon_pkt.size = beacon_RFU1_size + 4 + 2 + 7 + beacon_RFU2_size + 2; + beacon_pkt.coderate = CR_LORA_4_5; + beacon_pkt.invert_pol = false; + beacon_pkt.preamble = 10; + beacon_pkt.no_crc = true; + beacon_pkt.no_header = true; + + /* network common part beacon fields (little endian) */ + for (i = 0; i < (int)beacon_RFU1_size; i++) { + beacon_pkt.payload[beacon_pyld_idx++] = 0x0; + } + + /* network common part beacon fields (little endian) */ + beacon_pyld_idx += 4; /* time (variable), filled later */ + beacon_pyld_idx += 2; /* crc1 (variable), filled later */ + + /* calculate the latitude and longitude that must be publicly reported */ + field_latitude = (int32_t)((reference_coord.lat / 90.0) * (double)(1<<23)); + if (field_latitude > (int32_t)0x007FFFFF) { + field_latitude = (int32_t)0x007FFFFF; /* +90 N is represented as 89.99999 N */ + } else if (field_latitude < (int32_t)0xFF800000) { + field_latitude = (int32_t)0xFF800000; + } + field_longitude = (int32_t)((reference_coord.lon / 180.0) * (double)(1<<23)); + if (field_longitude > (int32_t)0x007FFFFF) { + field_longitude = (int32_t)0x007FFFFF; /* +180 E is represented as 179.99999 E */ + } else if (field_longitude < (int32_t)0xFF800000) { + field_longitude = (int32_t)0xFF800000; + } + + /* gateway specific beacon fields */ + beacon_pkt.payload[beacon_pyld_idx++] = beacon_infodesc; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & field_latitude; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (field_latitude >> 8); + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (field_latitude >> 16); + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & field_longitude; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (field_longitude >> 8); + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (field_longitude >> 16); + + /* RFU */ + for (i = 0; i < (int)beacon_RFU2_size; i++) { + beacon_pkt.payload[beacon_pyld_idx++] = 0x0; + } + + /* CRC of the beacon gateway specific part fields */ + field_crc2 = crc16((beacon_pkt.payload + 6 + beacon_RFU1_size), 7 + beacon_RFU2_size); + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & field_crc2; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (field_crc2 >> 8); + + /* JIT queue initialization */ + jit_queue_init(&jit_queue); + + while (!exit_sig && !quit_sig) { + + /* auto-quit if the threshold is crossed */ + if ((autoquit_threshold > 0) && (autoquit_cnt >= autoquit_threshold)) { + exit_sig = true; + MSG("INFO: [down] the last %u PULL_DATA were not ACKed, exiting application\n", autoquit_threshold); + break; + } + + /* generate random token for request */ + token_h = (uint8_t)rand(); /* random token */ + token_l = (uint8_t)rand(); /* random token */ + buff_req[1] = token_h; + buff_req[2] = token_l; + + /* send PULL request and record time */ + send(sock_down, (void *)buff_req, sizeof buff_req, 0); + clock_gettime(CLOCK_MONOTONIC, &send_time); + pthread_mutex_lock(&mx_meas_dw); + meas_dw_pull_sent += 1; + pthread_mutex_unlock(&mx_meas_dw); + req_ack = false; + autoquit_cnt++; + + /* listen to packets and process them until a new PULL request must be sent */ + recv_time = send_time; + while ((int)difftimespec(recv_time, send_time) < keepalive_time) { + + /* try to receive a datagram */ + msg_len = recv(sock_down, (void *)buff_down, (sizeof buff_down)-1, 0); + clock_gettime(CLOCK_MONOTONIC, &recv_time); + + /* Pre-allocate beacon slots in JiT queue, to check downlink collisions */ + beacon_loop = JIT_NUM_BEACON_IN_QUEUE - jit_queue.num_beacon; + retry = 0; + while (beacon_loop && (beacon_period != 0)) { + pthread_mutex_lock(&mx_timeref); + /* Wait for GPS to be ready before inserting beacons in JiT queue */ + if ((gps_ref_valid == true) && (xtal_correct_ok == true)) { + + /* compute GPS time for next beacon to come */ + /* LoRaWAN: T = k*beacon_period + TBeaconDelay */ + /* with TBeaconDelay = [1.5ms +/- 1µs]*/ + if (last_beacon_gps_time.tv_sec == 0) { + /* if no beacon has been queued, get next slot from current GPS time */ + diff_beacon_time = time_reference_gps.gps.tv_sec % ((time_t)beacon_period); + next_beacon_gps_time.tv_sec = time_reference_gps.gps.tv_sec + + ((time_t)beacon_period - diff_beacon_time); + } else { + /* if there is already a beacon, take it as reference */ + next_beacon_gps_time.tv_sec = last_beacon_gps_time.tv_sec + beacon_period; + } + /* now we can add a beacon_period to the reference to get next beacon GPS time */ + next_beacon_gps_time.tv_sec += (retry * beacon_period); + next_beacon_gps_time.tv_nsec = 0; + +#if DEBUG_BEACON + { + time_t time_unix; + + time_unix = time_reference_gps.gps.tv_sec + UNIX_GPS_EPOCH_OFFSET; + MSG_DEBUG(DEBUG_BEACON, "GPS-now : %s", ctime(&time_unix)); + time_unix = last_beacon_gps_time.tv_sec + UNIX_GPS_EPOCH_OFFSET; + MSG_DEBUG(DEBUG_BEACON, "GPS-last: %s", ctime(&time_unix)); + time_unix = next_beacon_gps_time.tv_sec + UNIX_GPS_EPOCH_OFFSET; + MSG_DEBUG(DEBUG_BEACON, "GPS-next: %s", ctime(&time_unix)); + } +#endif + + /* convert GPS time to concentrator time, and set packet counter for JiT trigger */ + lgw_gps2cnt(time_reference_gps, next_beacon_gps_time, &(beacon_pkt.count_us)); + pthread_mutex_unlock(&mx_timeref); + + /* apply frequency correction to beacon TX frequency */ + if (beacon_freq_nb > 1) { + beacon_chan = (next_beacon_gps_time.tv_sec / beacon_period) % beacon_freq_nb; /* floor rounding */ + } else { + beacon_chan = 0; + } + /* Compute beacon frequency */ + beacon_pkt.freq_hz = beacon_freq_hz + (beacon_chan * beacon_freq_step); + + /* load time in beacon payload */ + beacon_pyld_idx = beacon_RFU1_size; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & next_beacon_gps_time.tv_sec; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (next_beacon_gps_time.tv_sec >> 8); + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (next_beacon_gps_time.tv_sec >> 16); + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (next_beacon_gps_time.tv_sec >> 24); + + /* calculate CRC */ + field_crc1 = crc16(beacon_pkt.payload, 4 + beacon_RFU1_size); /* CRC for the network common part */ + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & field_crc1; + beacon_pkt.payload[beacon_pyld_idx++] = 0xFF & (field_crc1 >> 8); + + /* Insert beacon packet in JiT queue */ + gettimeofday(¤t_unix_time, NULL); + get_concentrator_time(¤t_concentrator_time, current_unix_time); + jit_result = jit_enqueue(&jit_queue, ¤t_concentrator_time, &beacon_pkt, JIT_PKT_TYPE_BEACON); + if (jit_result == JIT_ERROR_OK) { + /* update stats */ + pthread_mutex_lock(&mx_meas_dw); + meas_nb_beacon_queued += 1; + pthread_mutex_unlock(&mx_meas_dw); + + /* One more beacon in the queue */ + beacon_loop--; + retry = 0; + last_beacon_gps_time.tv_sec = next_beacon_gps_time.tv_sec; /* keep this beacon time as reference for next one to be programmed */ + + /* display beacon payload */ + MSG("INFO: Beacon queued (count_us=%u, freq_hz=%u, size=%u):\n", beacon_pkt.count_us, beacon_pkt.freq_hz, beacon_pkt.size); + printf( " => " ); + for (i = 0; i < beacon_pkt.size; ++i) { + MSG("%02X ", beacon_pkt.payload[i]); + } + MSG("\n"); + } else { + MSG_DEBUG(DEBUG_BEACON, "--> beacon queuing failed with %d\n", jit_result); + /* update stats */ + pthread_mutex_lock(&mx_meas_dw); + if (jit_result != JIT_ERROR_COLLISION_BEACON) { + meas_nb_beacon_rejected += 1; + } + pthread_mutex_unlock(&mx_meas_dw); + /* In case previous enqueue failed, we retry one period later until it succeeds */ + /* Note: In case the GPS has been unlocked for a while, there can be lots of retries */ + /* to be done from last beacon time to a new valid one */ + retry++; + MSG_DEBUG(DEBUG_BEACON, "--> beacon queuing retry=%d\n", retry); + } + } else { + pthread_mutex_unlock(&mx_timeref); + break; + } + } + + /* if no network message was received, got back to listening sock_down socket */ + if (msg_len == -1) { + //MSG("WARNING: [down] recv returned %s\n", strerror(errno)); /* too verbose */ + continue; + } + + /* if the datagram does not respect protocol, just ignore it */ + if ((msg_len < 4) || (buff_down[0] != PROTOCOL_VERSION) || ((buff_down[3] != PKT_PULL_RESP) && (buff_down[3] != PKT_PULL_ACK))) { + MSG("WARNING: [down] ignoring invalid packet len=%d, protocol_version=%d, id=%d\n", + msg_len, buff_down[0], buff_down[3]); + continue; + } + + /* if the datagram is an ACK, check token */ + if (buff_down[3] == PKT_PULL_ACK) { + if ((buff_down[1] == token_h) && (buff_down[2] == token_l)) { + if (req_ack) { + MSG("INFO: [down] duplicate ACK received :)\n"); + } else { /* if that packet was not already acknowledged */ + req_ack = true; + autoquit_cnt = 0; + pthread_mutex_lock(&mx_meas_dw); + meas_dw_ack_rcv += 1; + pthread_mutex_unlock(&mx_meas_dw); + MSG("INFO: [down] PULL_ACK received in %i ms\n", (int)(1000 * difftimespec(recv_time, send_time))); + } + } else { /* out-of-sync token */ + MSG("INFO: [down] received out-of-sync ACK\n"); + } + continue; + } + + /* the datagram is a PULL_RESP */ + buff_down[msg_len] = 0; /* add string terminator, just to be safe */ + MSG("INFO: [down] PULL_RESP received - token[%d:%d] :)\n", buff_down[1], buff_down[2]); /* very verbose */ + printf("\nJSON down: %s\n", (char *)(buff_down + 4)); /* DEBUG: display JSON payload */ + + /* initialize TX struct and try to parse JSON */ + memset(&txpkt, 0, sizeof txpkt); + root_val = json_parse_string_with_comments((const char *)(buff_down + 4)); /* JSON offset */ + if (root_val == NULL) { + MSG("WARNING: [down] invalid JSON, TX aborted\n"); + continue; + } + + /* look for JSON sub-object 'txpk' */ + txpk_obj = json_object_get_object(json_value_get_object(root_val), "txpk"); + if (txpk_obj == NULL) { + MSG("WARNING: [down] no \"txpk\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + + /* Parse "immediate" tag, or target timestamp, or UTC time to be converted by GPS (mandatory) */ + i = json_object_get_boolean(txpk_obj,"imme"); /* can be 1 if true, 0 if false, or -1 if not a JSON boolean */ + if (i == 1) { + /* TX procedure: send immediately */ + sent_immediate = true; + downlink_type = JIT_PKT_TYPE_DOWNLINK_CLASS_C; + MSG("INFO: [down] a packet will be sent in \"immediate\" mode\n"); + } else { + sent_immediate = false; + val = json_object_get_value(txpk_obj,"tmst"); + if (val != NULL) { + /* TX procedure: send on timestamp value */ + txpkt.count_us = (uint32_t)json_value_get_number(val); + + /* Concentrator timestamp is given, we consider it is a Class A downlink */ + downlink_type = JIT_PKT_TYPE_DOWNLINK_CLASS_A; + } else { + /* TX procedure: send on GPS time (converted to timestamp value) */ + val = json_object_get_value(txpk_obj, "tmms"); + if (val == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.tmst\" or \"txpk.tmms\" objects in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + if (gps_enabled == true) { + pthread_mutex_lock(&mx_timeref); + if (gps_ref_valid == true) { + local_ref = time_reference_gps; + pthread_mutex_unlock(&mx_timeref); + } else { + pthread_mutex_unlock(&mx_timeref); + MSG("WARNING: [down] no valid GPS time reference yet, impossible to send packet on specific GPS time, TX aborted\n"); + json_value_free(root_val); + + /* send acknoledge datagram to server */ + send_tx_ack(buff_down[1], buff_down[2], JIT_ERROR_GPS_UNLOCKED); + continue; + } + } else { + MSG("WARNING: [down] GPS disabled, impossible to send packet on specific GPS time, TX aborted\n"); + json_value_free(root_val); + + /* send acknoledge datagram to server */ + send_tx_ack(buff_down[1], buff_down[2], JIT_ERROR_GPS_UNLOCKED); + continue; + } + + /* Get GPS time from JSON */ + x2 = (uint64_t)json_value_get_number(val); + + /* Convert GPS time from milliseconds to timespec */ + x3 = modf((double)x2/1E3, &x4); + gps_tx.tv_sec = (time_t)x4; /* get seconds from integer part */ + gps_tx.tv_nsec = (long)(x3 * 1E9); /* get nanoseconds from fractional part */ + + /* transform GPS time to timestamp */ + i = lgw_gps2cnt(local_ref, gps_tx, &(txpkt.count_us)); + if (i != LGW_GPS_SUCCESS) { + MSG("WARNING: [down] could not convert GPS time to timestamp, TX aborted\n"); + json_value_free(root_val); + continue; + } else { + MSG("INFO: [down] a packet will be sent on timestamp value %u (calculated from GPS time)\n", txpkt.count_us); + } + + /* GPS timestamp is given, we consider it is a Class B downlink */ + downlink_type = JIT_PKT_TYPE_DOWNLINK_CLASS_B; + } + } + + /* Parse "No CRC" flag (optional field) */ + val = json_object_get_value(txpk_obj,"ncrc"); + if (val != NULL) { + txpkt.no_crc = (bool)json_value_get_boolean(val); + } + + /* parse target frequency (mandatory) */ + val = json_object_get_value(txpk_obj,"freq"); + if (val == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.freq\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + txpkt.freq_hz = (uint32_t)((double)(1.0e6) * json_value_get_number(val)); + + /* parse RF chain used for TX (mandatory) */ + val = json_object_get_value(txpk_obj,"rfch"); + if (val == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.rfch\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + txpkt.rf_chain = (uint8_t)json_value_get_number(val); + + /* parse TX power (optional field) */ + val = json_object_get_value(txpk_obj,"powe"); + if (val != NULL) { + txpkt.rf_power = (int8_t)json_value_get_number(val) - antenna_gain; + } + + /* Parse modulation (mandatory) */ + str = json_object_get_string(txpk_obj, "modu"); + if (str == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.modu\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + if (strcmp(str, "LORA") == 0) { + /* Lora modulation */ + txpkt.modulation = MOD_LORA; + + /* Parse Lora spreading-factor and modulation bandwidth (mandatory) */ + str = json_object_get_string(txpk_obj, "datr"); + if (str == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.datr\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + i = sscanf(str, "SF%2hdBW%3hd", &x0, &x1); + if (i != 2) { + MSG("WARNING: [down] format error in \"txpk.datr\", TX aborted\n"); + json_value_free(root_val); + continue; + } + switch (x0) { + case 7: txpkt.datarate = DR_LORA_SF7; break; + case 8: txpkt.datarate = DR_LORA_SF8; break; + case 9: txpkt.datarate = DR_LORA_SF9; break; + case 10: txpkt.datarate = DR_LORA_SF10; break; + case 11: txpkt.datarate = DR_LORA_SF11; break; + case 12: txpkt.datarate = DR_LORA_SF12; break; + default: + MSG("WARNING: [down] format error in \"txpk.datr\", invalid SF, TX aborted\n"); + json_value_free(root_val); + continue; + } + switch (x1) { + case 125: txpkt.bandwidth = BW_125KHZ; break; + case 250: txpkt.bandwidth = BW_250KHZ; break; + case 500: txpkt.bandwidth = BW_500KHZ; break; + default: + MSG("WARNING: [down] format error in \"txpk.datr\", invalid BW, TX aborted\n"); + json_value_free(root_val); + continue; + } + + /* Parse ECC coding rate (optional field) */ + str = json_object_get_string(txpk_obj, "codr"); + if (str == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.codr\" object in json, TX aborted\n"); + json_value_free(root_val); + continue; + } + if (strcmp(str, "4/5") == 0) txpkt.coderate = CR_LORA_4_5; + else if (strcmp(str, "4/6") == 0) txpkt.coderate = CR_LORA_4_6; + else if (strcmp(str, "2/3") == 0) txpkt.coderate = CR_LORA_4_6; + else if (strcmp(str, "4/7") == 0) txpkt.coderate = CR_LORA_4_7; + else if (strcmp(str, "4/8") == 0) txpkt.coderate = CR_LORA_4_8; + else if (strcmp(str, "1/2") == 0) txpkt.coderate = CR_LORA_4_8; + else { + MSG("WARNING: [down] format error in \"txpk.codr\", TX aborted\n"); + json_value_free(root_val); + continue; + } + + /* Parse signal polarity switch (optional field) */ + val = json_object_get_value(txpk_obj,"ipol"); + if (val != NULL) { + txpkt.invert_pol = (bool)json_value_get_boolean(val); + } + + /* parse Lora preamble length (optional field, optimum min value enforced) */ + val = json_object_get_value(txpk_obj,"prea"); + if (val != NULL) { + i = (int)json_value_get_number(val); + if (i >= MIN_LORA_PREAMB) { + txpkt.preamble = (uint16_t)i; + } else { + txpkt.preamble = (uint16_t)MIN_LORA_PREAMB; + } + } else { + txpkt.preamble = (uint16_t)STD_LORA_PREAMB; + } + + } else if (strcmp(str, "FSK") == 0) { + /* FSK modulation */ + txpkt.modulation = MOD_FSK; + + /* parse FSK bitrate (mandatory) */ + val = json_object_get_value(txpk_obj,"datr"); + if (val == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.datr\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + txpkt.datarate = (uint32_t)(json_value_get_number(val)); + + /* parse frequency deviation (mandatory) */ + val = json_object_get_value(txpk_obj,"fdev"); + if (val == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.fdev\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + txpkt.f_dev = (uint8_t)(json_value_get_number(val) / 1000.0); /* JSON value in Hz, txpkt.f_dev in kHz */ + + /* parse FSK preamble length (optional field, optimum min value enforced) */ + val = json_object_get_value(txpk_obj,"prea"); + if (val != NULL) { + i = (int)json_value_get_number(val); + if (i >= MIN_FSK_PREAMB) { + txpkt.preamble = (uint16_t)i; + } else { + txpkt.preamble = (uint16_t)MIN_FSK_PREAMB; + } + } else { + txpkt.preamble = (uint16_t)STD_FSK_PREAMB; + } + + } else { + MSG("WARNING: [down] invalid modulation in \"txpk.modu\", TX aborted\n"); + json_value_free(root_val); + continue; + } + + /* Parse payload length (mandatory) */ + val = json_object_get_value(txpk_obj,"size"); + if (val == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.size\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + txpkt.size = (uint16_t)json_value_get_number(val); + + /* Parse payload data (mandatory) */ + str = json_object_get_string(txpk_obj, "data"); + if (str == NULL) { + MSG("WARNING: [down] no mandatory \"txpk.data\" object in JSON, TX aborted\n"); + json_value_free(root_val); + continue; + } + i = b64_to_bin(str, strlen(str), txpkt.payload, sizeof txpkt.payload); + if (i != txpkt.size) { + MSG("WARNING: [down] mismatch between .size and .data size once converter to binary\n"); + } + + /* free the JSON parse tree from memory */ + json_value_free(root_val); + + /* select TX mode */ + if (sent_immediate) { + txpkt.tx_mode = IMMEDIATE; + } else { + txpkt.tx_mode = TIMESTAMPED; + } + + /* record measurement data */ + pthread_mutex_lock(&mx_meas_dw); + meas_dw_dgram_rcv += 1; /* count only datagrams with no JSON errors */ + meas_dw_network_byte += msg_len; /* meas_dw_network_byte */ + meas_dw_payload_byte += txpkt.size; + pthread_mutex_unlock(&mx_meas_dw); + + /* check TX parameter before trying to queue packet */ + jit_result = JIT_ERROR_OK; + if ((txpkt.freq_hz < tx_freq_min[txpkt.rf_chain]) || (txpkt.freq_hz > tx_freq_max[txpkt.rf_chain])) { + jit_result = JIT_ERROR_TX_FREQ; + MSG("ERROR: Packet REJECTED, unsupported frequency - %u (min:%u,max:%u)\n", txpkt.freq_hz, tx_freq_min[txpkt.rf_chain], tx_freq_max[txpkt.rf_chain]); + } + if (jit_result == JIT_ERROR_OK) { + for (i=0; i<txlut.size; i++) { + if (txlut.lut[i].rf_power == txpkt.rf_power) { + /* this RF power is supported, we can continue */ + break; + } + } + if (i == txlut.size) { + /* this RF power is not supported */ + jit_result = JIT_ERROR_TX_POWER; + MSG("ERROR: Packet REJECTED, unsupported RF power for TX - %d\n", txpkt.rf_power); + } + } + + /* insert packet to be sent into JIT queue */ + if (jit_result == JIT_ERROR_OK) { + gettimeofday(¤t_unix_time, NULL); + get_concentrator_time(¤t_concentrator_time, current_unix_time); + jit_result = jit_enqueue(&jit_queue, ¤t_concentrator_time, &txpkt, downlink_type); + if (jit_result != JIT_ERROR_OK) { + printf("ERROR: Packet REJECTED (jit error=%d)\n", jit_result); + } + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_requested += 1; + pthread_mutex_unlock(&mx_meas_dw); + } + + /* Send acknoledge datagram to server */ + send_tx_ack(buff_down[1], buff_down[2], jit_result); + } + } + MSG("\nINFO: End of downstream thread\n"); +} + +void print_tx_status(uint8_t tx_status) { + switch (tx_status) { + case TX_OFF: + MSG("INFO: [jit] lgw_status returned TX_OFF\n"); + break; + case TX_FREE: + MSG("INFO: [jit] lgw_status returned TX_FREE\n"); + break; + case TX_EMITTING: + MSG("INFO: [jit] lgw_status returned TX_EMITTING\n"); + break; + case TX_SCHEDULED: + MSG("INFO: [jit] lgw_status returned TX_SCHEDULED\n"); + break; + default: + MSG("INFO: [jit] lgw_status returned UNKNOWN (%d)\n", tx_status); + break; + } +} + + +/* -------------------------------------------------------------------------- */ +/* --- THREAD 3: CHECKING PACKETS TO BE SENT FROM JIT QUEUE AND SEND THEM --- */ + +void thread_jit(void) { + int result = LGW_HAL_SUCCESS; + struct lgw_pkt_tx_s pkt; + int pkt_index = -1; + struct timeval current_unix_time; + struct timeval current_concentrator_time; + enum jit_error_e jit_result; + enum jit_pkt_type_e pkt_type; + uint8_t tx_status; + + while (!exit_sig && !quit_sig) { + wait_ms(10); + + /* transfer data and metadata to the concentrator, and schedule TX */ + gettimeofday(¤t_unix_time, NULL); + get_concentrator_time(¤t_concentrator_time, current_unix_time); + jit_result = jit_peek(&jit_queue, ¤t_concentrator_time, &pkt_index); + if (jit_result == JIT_ERROR_OK) { + if (pkt_index > -1) { + jit_result = jit_dequeue(&jit_queue, pkt_index, &pkt, &pkt_type); + if (jit_result == JIT_ERROR_OK) { + /* update beacon stats */ + if (pkt_type == JIT_PKT_TYPE_BEACON) { + /* Compensate breacon frequency with xtal error */ + pthread_mutex_lock(&mx_xcorr); + pkt.freq_hz = (uint32_t)(xtal_correct * (double)pkt.freq_hz); + MSG_DEBUG(DEBUG_BEACON, "beacon_pkt.freq_hz=%u (xtal_correct=%.15lf)\n", pkt.freq_hz, xtal_correct); + pthread_mutex_unlock(&mx_xcorr); + + /* Update statistics */ + pthread_mutex_lock(&mx_meas_dw); + meas_nb_beacon_sent += 1; + pthread_mutex_unlock(&mx_meas_dw); + MSG("INFO: Beacon dequeued (count_us=%u)\n", pkt.count_us); + } + + /* check if concentrator is free for sending new packet */ + pthread_mutex_lock(&mx_concent); /* may have to wait for a fetch to finish */ + result = lgw_status(TX_STATUS, &tx_status); + pthread_mutex_unlock(&mx_concent); /* free concentrator ASAP */ + if (result == LGW_HAL_ERROR) { + MSG("WARNING: [jit] lgw_status failed\n"); + } else { + if (tx_status == TX_EMITTING) { + MSG("ERROR: concentrator is currently emitting\n"); + print_tx_status(tx_status); + continue; + } else if (tx_status == TX_SCHEDULED) { + MSG("WARNING: a downlink was already scheduled, overwritting it...\n"); + print_tx_status(tx_status); + } else { + /* Nothing to do */ + } + } + + /* send packet to concentrator */ + pthread_mutex_lock(&mx_concent); /* may have to wait for a fetch to finish */ + result = lgw_send(pkt); + pthread_mutex_unlock(&mx_concent); /* free concentrator ASAP */ + if (result == LGW_HAL_ERROR) { + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_fail += 1; + pthread_mutex_unlock(&mx_meas_dw); + MSG("WARNING: [jit] lgw_send failed\n"); + continue; + } else { + pthread_mutex_lock(&mx_meas_dw); + meas_nb_tx_ok += 1; + pthread_mutex_unlock(&mx_meas_dw); + MSG_DEBUG(DEBUG_PKT_FWD, "lgw_send done: count_us=%u\n", pkt.count_us); + } + } else { + MSG("ERROR: jit_dequeue failed with %d\n", jit_result); + } + } + } else if (jit_result == JIT_ERROR_EMPTY) { + /* Do nothing, it can happen */ + } else { + MSG("ERROR: jit_peek failed with %d\n", jit_result); + } + } +} + +/* -------------------------------------------------------------------------- */ +/* --- THREAD 4: PARSE GPS MESSAGE AND KEEP GATEWAY IN SYNC ----------------- */ + +static void gps_process_sync(void) { + struct timespec gps_time; + struct timespec utc; + uint32_t trig_tstamp; /* concentrator timestamp associated with PPM pulse */ + int i = lgw_gps_get(&utc, &gps_time, NULL, NULL); + + /* get GPS time for synchronization */ + if (i != LGW_GPS_SUCCESS) { + MSG("WARNING: [gps] could not get GPS time from GPS\n"); + return; + } + + /* get timestamp captured on PPM pulse */ + pthread_mutex_lock(&mx_concent); + i = lgw_get_trigcnt(&trig_tstamp); + pthread_mutex_unlock(&mx_concent); + if (i != LGW_HAL_SUCCESS) { + MSG("WARNING: [gps] failed to read concentrator timestamp\n"); + return; + } + + /* try to update time reference with the new GPS time & timestamp */ + pthread_mutex_lock(&mx_timeref); + i = lgw_gps_sync(&time_reference_gps, trig_tstamp, utc, gps_time); + pthread_mutex_unlock(&mx_timeref); + if (i != LGW_GPS_SUCCESS) { + MSG("WARNING: [gps] GPS out of sync, keeping previous time reference\n"); + } +} + +static void gps_process_coords(void) { + /* position variable */ + struct coord_s coord; + struct coord_s gpserr; + int i = lgw_gps_get(NULL, NULL, &coord, &gpserr); + + /* update gateway coordinates */ + pthread_mutex_lock(&mx_meas_gps); + if (i == LGW_GPS_SUCCESS) { + gps_coord_valid = true; + meas_gps_coord = coord; + meas_gps_err = gpserr; + // TODO: report other GPS statistics (typ. signal quality & integrity) + } else { + gps_coord_valid = false; + } + pthread_mutex_unlock(&mx_meas_gps); +} + +void thread_gps(void) { + /* serial variables */ + char serial_buff[128]; /* buffer to receive GPS data */ + size_t wr_idx = 0; /* pointer to end of chars in buffer */ + + /* variables for PPM pulse GPS synchronization */ + enum gps_msg latest_msg; /* keep track of latest NMEA message parsed */ + + /* initialize some variables before loop */ + memset(serial_buff, 0, sizeof serial_buff); + + while (!exit_sig && !quit_sig) { + size_t rd_idx = 0; + size_t frame_end_idx = 0; + + /* blocking non-canonical read on serial port */ + ssize_t nb_char = read(gps_tty_fd, serial_buff + wr_idx, LGW_GPS_MIN_MSG_SIZE); + if (nb_char <= 0) { + MSG("WARNING: [gps] read() returned value %d\n", nb_char); + continue; + } + wr_idx += (size_t)nb_char; + + /******************************************* + * Scan buffer for UBX/NMEA sync chars and * + * attempt to decode frame if one is found * + *******************************************/ + while(rd_idx < wr_idx) { + size_t frame_size = 0; + + /* Scan buffer for UBX sync char */ + if(serial_buff[rd_idx] == (char)LGW_GPS_UBX_SYNC_CHAR) { + + /*********************** + * Found UBX sync char * + ***********************/ + latest_msg = lgw_parse_ubx(&serial_buff[rd_idx], (wr_idx - rd_idx), &frame_size); + + if (frame_size > 0) { + if (latest_msg == INCOMPLETE) { + /* UBX header found but frame appears to be missing bytes */ + frame_size = 0; + } else if (latest_msg == INVALID) { + /* message header received but message appears to be corrupted */ + MSG("WARNING: [gps] could not get a valid message from GPS (no time)\n"); + frame_size = 0; + } else if (latest_msg == UBX_NAV_TIMEGPS) { + gps_process_sync(); + } + } + } else if(serial_buff[rd_idx] == LGW_GPS_NMEA_SYNC_CHAR) { + /************************ + * Found NMEA sync char * + ************************/ + /* scan for NMEA end marker (LF = 0x0a) */ + char* nmea_end_ptr = memchr(&serial_buff[rd_idx],(int)0x0a, (wr_idx - rd_idx)); + + if(nmea_end_ptr) { + /* found end marker */ + frame_size = nmea_end_ptr - &serial_buff[rd_idx] + 1; + latest_msg = lgw_parse_nmea(&serial_buff[rd_idx], frame_size); + + if(latest_msg == INVALID || latest_msg == UNKNOWN) { + /* checksum failed */ + frame_size = 0; + } else if (latest_msg == NMEA_RMC) { /* Get location from RMC frames */ + gps_process_coords(); + } + } + } + + if(frame_size > 0) { + /* At this point message is a checksum verified frame + we're processed or ignored. Remove frame from buffer */ + rd_idx += frame_size; + frame_end_idx = rd_idx; + } else { + rd_idx++; + } + } /* ...for(rd_idx = 0... */ + + if(frame_end_idx) { + /* Frames have been processed. Remove bytes to end of last processed frame */ + memcpy(serial_buff, &serial_buff[frame_end_idx], wr_idx - frame_end_idx); + wr_idx -= frame_end_idx; + } /* ...for(rd_idx = 0... */ + + /* Prevent buffer overflow */ + if((sizeof(serial_buff) - wr_idx) < LGW_GPS_MIN_MSG_SIZE) { + memcpy(serial_buff, &serial_buff[LGW_GPS_MIN_MSG_SIZE], wr_idx - LGW_GPS_MIN_MSG_SIZE); + wr_idx -= LGW_GPS_MIN_MSG_SIZE; + } + } + MSG("\nINFO: End of GPS thread\n"); +} + +/* -------------------------------------------------------------------------- */ +/* --- THREAD 5: CHECK TIME REFERENCE AND CALCULATE XTAL CORRECTION --------- */ + +void thread_valid(void) { + + /* GPS reference validation variables */ + long gps_ref_age = 0; + bool ref_valid_local = false; + double xtal_err_cpy; + + /* variables for XTAL correction averaging */ + unsigned init_cpt = 0; + double init_acc = 0.0; + double x; + + /* correction debug */ + // FILE * log_file = NULL; + // time_t now_time; + // char log_name[64]; + + /* initialization */ + // time(&now_time); + // strftime(log_name,sizeof log_name,"xtal_err_%Y%m%dT%H%M%SZ.csv",localtime(&now_time)); + // log_file = fopen(log_name, "w"); + // setbuf(log_file, NULL); + // fprintf(log_file,"\"xtal_correct\",\"XERR_INIT_AVG %u XERR_FILT_COEF %u\"\n", XERR_INIT_AVG, XERR_FILT_COEF); // DEBUG + + /* main loop task */ + while (!exit_sig && !quit_sig) { + wait_ms(1000); + + /* calculate when the time reference was last updated */ + pthread_mutex_lock(&mx_timeref); + gps_ref_age = (long)difftime(time(NULL), time_reference_gps.systime); + if ((gps_ref_age >= 0) && (gps_ref_age <= GPS_REF_MAX_AGE)) { + /* time ref is ok, validate and */ + gps_ref_valid = true; + ref_valid_local = true; + xtal_err_cpy = time_reference_gps.xtal_err; + //printf("XTAL err: %.15lf (1/XTAL_err:%.15lf)\n", xtal_err_cpy, 1/xtal_err_cpy); // DEBUG + } else { + /* time ref is too old, invalidate */ + gps_ref_valid = false; + ref_valid_local = false; + } + pthread_mutex_unlock(&mx_timeref); + + /* manage XTAL correction */ + if (ref_valid_local == false) { + /* couldn't sync, or sync too old -> invalidate XTAL correction */ + pthread_mutex_lock(&mx_xcorr); + xtal_correct_ok = false; + xtal_correct = 1.0; + pthread_mutex_unlock(&mx_xcorr); + init_cpt = 0; + init_acc = 0.0; + } else { + if (init_cpt < XERR_INIT_AVG) { + /* initial accumulation */ + init_acc += xtal_err_cpy; + ++init_cpt; + } else if (init_cpt == XERR_INIT_AVG) { + /* initial average calculation */ + pthread_mutex_lock(&mx_xcorr); + xtal_correct = (double)(XERR_INIT_AVG) / init_acc; + //printf("XERR_INIT_AVG=%d, init_acc=%.15lf\n", XERR_INIT_AVG, init_acc); + xtal_correct_ok = true; + pthread_mutex_unlock(&mx_xcorr); + ++init_cpt; + // fprintf(log_file,"%.18lf,\"average\"\n", xtal_correct); // DEBUG + } else { + /* tracking with low-pass filter */ + x = 1 / xtal_err_cpy; + pthread_mutex_lock(&mx_xcorr); + xtal_correct = xtal_correct - xtal_correct/XERR_FILT_COEF + x/XERR_FILT_COEF; + pthread_mutex_unlock(&mx_xcorr); + // fprintf(log_file,"%.18lf,\"track\"\n", xtal_correct); // DEBUG + } + } + // printf("Time ref: %s, XTAL correct: %s (%.15lf)\n", ref_valid_local?"valid":"invalid", xtal_correct_ok?"valid":"invalid", xtal_correct); // DEBUG + } + MSG("\nINFO: End of validation thread\n"); +} + +/* --- EOF ------------------------------------------------------------------ */ diff --git a/lora_pkt_fwd/src/parson.c b/lora_pkt_fwd/src/parson.c new file mode 100644 index 0000000..16bb158 --- /dev/null +++ b/lora_pkt_fwd/src/parson.c @@ -0,0 +1,1765 @@ +/* + Parson ( http://kgabis.github.com/parson/ ) + Copyright (c) 2012 - 2016 Krzysztof Gabis + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ +#ifdef _MSC_VER +#define _CRT_SECURE_NO_WARNINGS +#endif + +#include "parson.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <math.h> + +#define STARTING_CAPACITY 15 +#define ARRAY_MAX_CAPACITY 122880 /* 15*(2^13) */ +#define OBJECT_MAX_CAPACITY 960 /* 15*(2^6) */ +#define MAX_NESTING 19 +#define DOUBLE_SERIALIZATION_FORMAT "%f" + +#define SIZEOF_TOKEN(a) (sizeof(a) - 1) +#define SKIP_CHAR(str) ((*str)++) +#define SKIP_WHITESPACES(str) while (isspace(**str)) { SKIP_CHAR(str); } +#define MAX(a, b) ((a) > (b) ? (a) : (b)) + +#undef malloc +#undef free + +static JSON_Malloc_Function parson_malloc = malloc; +static JSON_Free_Function parson_free = free; + +#define IS_CONT(b) (((unsigned char)(b) & 0xC0) == 0x80) /* is utf-8 continuation byte */ + +/* Type definitions */ +typedef union json_value_value { + char *string; + double number; + JSON_Object *object; + JSON_Array *array; + int boolean; + int null; +} JSON_Value_Value; + +struct json_value_t { + JSON_Value_Type type; + JSON_Value_Value value; +}; + +struct json_object_t { + char **names; + JSON_Value **values; + size_t count; + size_t capacity; +}; + +struct json_array_t { + JSON_Value **items; + size_t count; + size_t capacity; +}; + +/* Various */ +static char * read_file(const char *filename); +static void remove_comments(char *string, const char *start_token, const char *end_token); +static char * parson_strndup(const char *string, size_t n); +static char * parson_strdup(const char *string); +static int is_utf16_hex(const unsigned char *string); +static int num_bytes_in_utf8_sequence(unsigned char c); +static int verify_utf8_sequence(const unsigned char *string, int *len); +static int is_valid_utf8(const char *string, size_t string_len); +static int is_decimal(const char *string, size_t length); + +/* JSON Object */ +static JSON_Object * json_object_init(void); +static JSON_Status json_object_add(JSON_Object *object, const char *name, JSON_Value *value); +static JSON_Status json_object_resize(JSON_Object *object, size_t new_capacity); +static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n); +static void json_object_free(JSON_Object *object); + +/* JSON Array */ +static JSON_Array * json_array_init(void); +static JSON_Status json_array_add(JSON_Array *array, JSON_Value *value); +static JSON_Status json_array_resize(JSON_Array *array, size_t new_capacity); +static void json_array_free(JSON_Array *array); + +/* JSON Value */ +static JSON_Value * json_value_init_string_no_copy(char *string); + +/* Parser */ +static void skip_quotes(const char **string); +static int parse_utf_16(const char **unprocessed, char **processed); +static char * process_string(const char *input, size_t len); +static char * get_quoted_string(const char **string); +static JSON_Value * parse_object_value(const char **string, size_t nesting); +static JSON_Value * parse_array_value(const char **string, size_t nesting); +static JSON_Value * parse_string_value(const char **string); +static JSON_Value * parse_boolean_value(const char **string); +static JSON_Value * parse_number_value(const char **string); +static JSON_Value * parse_null_value(const char **string); +static JSON_Value * parse_value(const char **string, size_t nesting); + +/* Serialization */ +static int json_serialize_to_buffer_r(const JSON_Value *value, char *buf, int level, int is_pretty, char *num_buf); +static int json_serialize_string(const char *string, char *buf); +static int append_indent(char *buf, int level); +static int append_string(char *buf, const char *string); + +/* Various */ +static char * parson_strndup(const char *string, size_t n) { + char *output_string = (char*)parson_malloc(n + 1); + if (!output_string) + return NULL; + output_string[n] = '\0'; + strncpy(output_string, string, n); + return output_string; +} + +static char * parson_strdup(const char *string) { + return parson_strndup(string, strlen(string)); +} + +static int is_utf16_hex(const unsigned char *s) { + return isxdigit(s[0]) && isxdigit(s[1]) && isxdigit(s[2]) && isxdigit(s[3]); +} + +static int num_bytes_in_utf8_sequence(unsigned char c) { + if (c == 0xC0 || c == 0xC1 || c > 0xF4 || IS_CONT(c)) { + return 0; + } else if ((c & 0x80) == 0) { /* 0xxxxxxx */ + return 1; + } else if ((c & 0xE0) == 0xC0) { /* 110xxxxx */ + return 2; + } else if ((c & 0xF0) == 0xE0) { /* 1110xxxx */ + return 3; + } else if ((c & 0xF8) == 0xF0) { /* 11110xxx */ + return 4; + } + return 0; /* won't happen */ +} + +static int verify_utf8_sequence(const unsigned char *string, int *len) { + unsigned int cp = 0; + *len = num_bytes_in_utf8_sequence(string[0]); + + if (*len == 1) { + cp = string[0]; + } else if (*len == 2 && IS_CONT(string[1])) { + cp = string[0] & 0x1F; + cp = (cp << 6) | (string[1] & 0x3F); + } else if (*len == 3 && IS_CONT(string[1]) && IS_CONT(string[2])) { + cp = ((unsigned char)string[0]) & 0xF; + cp = (cp << 6) | (string[1] & 0x3F); + cp = (cp << 6) | (string[2] & 0x3F); + } else if (*len == 4 && IS_CONT(string[1]) && IS_CONT(string[2]) && IS_CONT(string[3])) { + cp = string[0] & 0x7; + cp = (cp << 6) | (string[1] & 0x3F); + cp = (cp << 6) | (string[2] & 0x3F); + cp = (cp << 6) | (string[3] & 0x3F); + } else { + return 0; + } + + /* overlong encodings */ + if ((cp < 0x80 && *len > 1) || + (cp < 0x800 && *len > 2) || + (cp < 0x10000 && *len > 3)) { + return 0; + } + + /* invalid unicode */ + if (cp > 0x10FFFF) { + return 0; + } + + /* surrogate halves */ + if (cp >= 0xD800 && cp <= 0xDFFF) { + return 0; + } + + return 1; +} + +static int is_valid_utf8(const char *string, size_t string_len) { + int len = 0; + const char *string_end = string + string_len; + while (string < string_end) { + if (!verify_utf8_sequence((const unsigned char*)string, &len)) { + return 0; + } + string += len; + } + return 1; +} + +static int is_decimal(const char *string, size_t length) { + if (length > 1 && string[0] == '0' && string[1] != '.') + return 0; + if (length > 2 && !strncmp(string, "-0", 2) && string[2] != '.') + return 0; + while (length--) + if (strchr("xX", string[length])) + return 0; + return 1; +} + +static char * read_file(const char * filename) { + FILE *fp = fopen(filename, "r"); + size_t file_size; + long pos; + char *file_contents; + if (!fp) + return NULL; + fseek(fp, 0L, SEEK_END); + pos = ftell(fp); + if (pos < 0) { + fclose(fp); + return NULL; + } + file_size = pos; + rewind(fp); + file_contents = (char*)parson_malloc(sizeof(char) * (file_size + 1)); + if (!file_contents) { + fclose(fp); + return NULL; + } + if (fread(file_contents, file_size, 1, fp) < 1) { + if (ferror(fp)) { + fclose(fp); + parson_free(file_contents); + return NULL; + } + } + fclose(fp); + file_contents[file_size] = '\0'; + return file_contents; +} + +static void remove_comments(char *string, const char *start_token, const char *end_token) { + int in_string = 0, escaped = 0; + size_t i; + char *ptr = NULL, current_char; + size_t start_token_len = strlen(start_token); + size_t end_token_len = strlen(end_token); + if (start_token_len == 0 || end_token_len == 0) + return; + while ((current_char = *string) != '\0') { + if (current_char == '\\' && !escaped) { + escaped = 1; + string++; + continue; + } else if (current_char == '\"' && !escaped) { + in_string = !in_string; + } else if (!in_string && strncmp(string, start_token, start_token_len) == 0) { + for(i = 0; i < start_token_len; i++) + string[i] = ' '; + string = string + start_token_len; + ptr = strstr(string, end_token); + if (!ptr) + return; + for (i = 0; i < (ptr - string) + end_token_len; i++) + string[i] = ' '; + string = ptr + end_token_len - 1; + } + escaped = 0; + string++; + } +} + +/* JSON Object */ +static JSON_Object * json_object_init(void) { + JSON_Object *new_obj = (JSON_Object*)parson_malloc(sizeof(JSON_Object)); + if (!new_obj) + return NULL; + new_obj->names = (char**)NULL; + new_obj->values = (JSON_Value**)NULL; + new_obj->capacity = 0; + new_obj->count = 0; + return new_obj; +} + +static JSON_Status json_object_add(JSON_Object *object, const char *name, JSON_Value *value) { + size_t index = 0; + if (object == NULL || name == NULL || value == NULL) { + return JSONFailure; + } + if (object->count >= object->capacity) { + size_t new_capacity = MAX(object->capacity * 2, STARTING_CAPACITY); + if (new_capacity > OBJECT_MAX_CAPACITY) + return JSONFailure; + if (json_object_resize(object, new_capacity) == JSONFailure) + return JSONFailure; + } + if (json_object_get_value(object, name) != NULL) + return JSONFailure; + index = object->count; + object->names[index] = parson_strdup(name); + if (object->names[index] == NULL) + return JSONFailure; + object->values[index] = value; + object->count++; + return JSONSuccess; +} + +static JSON_Status json_object_resize(JSON_Object *object, size_t new_capacity) { + char **temp_names = NULL; + JSON_Value **temp_values = NULL; + + if ((object->names == NULL && object->values != NULL) || + (object->names != NULL && object->values == NULL) || + new_capacity == 0) { + return JSONFailure; /* Shouldn't happen */ + } + + temp_names = (char**)parson_malloc(new_capacity * sizeof(char*)); + if (temp_names == NULL) + return JSONFailure; + + temp_values = (JSON_Value**)parson_malloc(new_capacity * sizeof(JSON_Value*)); + if (temp_values == NULL) { + parson_free(temp_names); + return JSONFailure; + } + + if (object->names != NULL && object->values != NULL && object->count > 0) { + memcpy(temp_names, object->names, object->count * sizeof(char*)); + memcpy(temp_values, object->values, object->count * sizeof(JSON_Value*)); + } + parson_free(object->names); + parson_free(object->values); + object->names = temp_names; + object->values = temp_values; + object->capacity = new_capacity; + return JSONSuccess; +} + +static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n) { + size_t i, name_length; + for (i = 0; i < json_object_get_count(object); i++) { + name_length = strlen(object->names[i]); + if (name_length != n) + continue; + if (strncmp(object->names[i], name, n) == 0) + return object->values[i]; + } + return NULL; +} + +static void json_object_free(JSON_Object *object) { + while(object->count--) { + parson_free(object->names[object->count]); + json_value_free(object->values[object->count]); + } + parson_free(object->names); + parson_free(object->values); + parson_free(object); +} + +/* JSON Array */ +static JSON_Array * json_array_init(void) { + JSON_Array *new_array = (JSON_Array*)parson_malloc(sizeof(JSON_Array)); + if (!new_array) + return NULL; + new_array->items = (JSON_Value**)NULL; + new_array->capacity = 0; + new_array->count = 0; + return new_array; +} + +static JSON_Status json_array_add(JSON_Array *array, JSON_Value *value) { + if (array->count >= array->capacity) { + size_t new_capacity = MAX(array->capacity * 2, STARTING_CAPACITY); + if (new_capacity > ARRAY_MAX_CAPACITY) + return JSONFailure; + if (json_array_resize(array, new_capacity) == JSONFailure) + return JSONFailure; + } + array->items[array->count] = value; + array->count++; + return JSONSuccess; +} + +static JSON_Status json_array_resize(JSON_Array *array, size_t new_capacity) { + JSON_Value **new_items = NULL; + if (new_capacity == 0) { + return JSONFailure; + } + new_items = (JSON_Value**)parson_malloc(new_capacity * sizeof(JSON_Value*)); + if (new_items == NULL) { + return JSONFailure; + } + if (array->items != NULL && array->count > 0) { + memcpy(new_items, array->items, array->count * sizeof(JSON_Value*)); + } + parson_free(array->items); + array->items = new_items; + array->capacity = new_capacity; + return JSONSuccess; +} + +static void json_array_free(JSON_Array *array) { + while (array->count--) + json_value_free(array->items[array->count]); + parson_free(array->items); + parson_free(array); +} + +/* JSON Value */ +static JSON_Value * json_value_init_string_no_copy(char *string) { + JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); + if (!new_value) + return NULL; + new_value->type = JSONString; + new_value->value.string = string; + return new_value; +} + +/* Parser */ +static void skip_quotes(const char **string) { + SKIP_CHAR(string); + while (**string != '\"') { + if (**string == '\0') + return; + if (**string == '\\') { + SKIP_CHAR(string); + if (**string == '\0') + return; + } + SKIP_CHAR(string); + } + SKIP_CHAR(string); +} + +static int parse_utf_16(const char **unprocessed, char **processed) { + unsigned int cp, lead, trail; + char *processed_ptr = *processed; + const char *unprocessed_ptr = *unprocessed; + unprocessed_ptr++; /* skips u */ + if (!is_utf16_hex((const unsigned char*)unprocessed_ptr) || sscanf(unprocessed_ptr, "%4x", &cp) == EOF) + return JSONFailure; + if (cp < 0x80) { + *processed_ptr = cp; /* 0xxxxxxx */ + } else if (cp < 0x800) { + *processed_ptr++ = ((cp >> 6) & 0x1F) | 0xC0; /* 110xxxxx */ + *processed_ptr = ((cp ) & 0x3F) | 0x80; /* 10xxxxxx */ + } else if (cp < 0xD800 || cp > 0xDFFF) { + *processed_ptr++ = ((cp >> 12) & 0x0F) | 0xE0; /* 1110xxxx */ + *processed_ptr++ = ((cp >> 6) & 0x3F) | 0x80; /* 10xxxxxx */ + *processed_ptr = ((cp ) & 0x3F) | 0x80; /* 10xxxxxx */ + } else if (cp >= 0xD800 && cp <= 0xDBFF) { /* lead surrogate (0xD800..0xDBFF) */ + lead = cp; + unprocessed_ptr += 4; /* should always be within the buffer, otherwise previous sscanf would fail */ + if (*unprocessed_ptr++ != '\\' || *unprocessed_ptr++ != 'u' || /* starts with \u? */ + !is_utf16_hex((const unsigned char*)unprocessed_ptr) || + sscanf(unprocessed_ptr, "%4x", &trail) == EOF || + trail < 0xDC00 || trail > 0xDFFF) { /* valid trail surrogate? (0xDC00..0xDFFF) */ + return JSONFailure; + } + cp = ((((lead-0xD800)&0x3FF)<<10)|((trail-0xDC00)&0x3FF))+0x010000; + *processed_ptr++ = (((cp >> 18) & 0x07) | 0xF0); /* 11110xxx */ + *processed_ptr++ = (((cp >> 12) & 0x3F) | 0x80); /* 10xxxxxx */ + *processed_ptr++ = (((cp >> 6) & 0x3F) | 0x80); /* 10xxxxxx */ + *processed_ptr = (((cp ) & 0x3F) | 0x80); /* 10xxxxxx */ + } else { /* trail surrogate before lead surrogate */ + return JSONFailure; + } + unprocessed_ptr += 3; + *processed = processed_ptr; + *unprocessed = unprocessed_ptr; + return JSONSuccess; +} + + +/* Copies and processes passed string up to supplied length. +Example: "\u006Corem ipsum" -> lorem ipsum */ +static char* process_string(const char *input, size_t len) { + const char *input_ptr = input; + size_t initial_size = (len + 1) * sizeof(char); + size_t final_size = 0; + char *output = (char*)parson_malloc(initial_size); + char *output_ptr = output; + char *resized_output = NULL; + while ((*input_ptr != '\0') && (size_t)(input_ptr - input) < len) { + if (*input_ptr == '\\') { + input_ptr++; + switch (*input_ptr) { + case '\"': *output_ptr = '\"'; break; + case '\\': *output_ptr = '\\'; break; + case '/': *output_ptr = '/'; break; + case 'b': *output_ptr = '\b'; break; + case 'f': *output_ptr = '\f'; break; + case 'n': *output_ptr = '\n'; break; + case 'r': *output_ptr = '\r'; break; + case 't': *output_ptr = '\t'; break; + case 'u': + if (parse_utf_16(&input_ptr, &output_ptr) == JSONFailure) + goto error; + break; + default: + goto error; + } + } else if ((unsigned char)*input_ptr < 0x20) { + goto error; /* 0x00-0x19 are invalid characters for json string (http://www.ietf.org/rfc/rfc4627.txt) */ + } else { + *output_ptr = *input_ptr; + } + output_ptr++; + input_ptr++; + } + *output_ptr = '\0'; + /* resize to new length */ + final_size = (size_t)(output_ptr-output) + 1; + resized_output = (char*)parson_malloc(final_size); + if (resized_output == NULL) + goto error; + memcpy(resized_output, output, final_size); + parson_free(output); + return resized_output; +error: + parson_free(output); + return NULL; +} + +/* Return processed contents of a string between quotes and + skips passed argument to a matching quote. */ +static char * get_quoted_string(const char **string) { + const char *string_start = *string; + size_t string_len = 0; + skip_quotes(string); + if (**string == '\0') + return NULL; + string_len = *string - string_start - 2; /* length without quotes */ + return process_string(string_start + 1, string_len); +} + +static JSON_Value * parse_value(const char **string, size_t nesting) { + if (nesting > MAX_NESTING) + return NULL; + SKIP_WHITESPACES(string); + switch (**string) { + case '{': + return parse_object_value(string, nesting + 1); + case '[': + return parse_array_value(string, nesting + 1); + case '\"': + return parse_string_value(string); + case 'f': case 't': + return parse_boolean_value(string); + case '-': + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + return parse_number_value(string); + case 'n': + return parse_null_value(string); + default: + return NULL; + } +} + +static JSON_Value * parse_object_value(const char **string, size_t nesting) { + JSON_Value *output_value = json_value_init_object(), *new_value = NULL; + JSON_Object *output_object = json_value_get_object(output_value); + char *new_key = NULL; + if (output_value == NULL) + return NULL; + SKIP_CHAR(string); + SKIP_WHITESPACES(string); + if (**string == '}') { /* empty object */ + SKIP_CHAR(string); + return output_value; + } + while (**string != '\0') { + new_key = get_quoted_string(string); + SKIP_WHITESPACES(string); + if (new_key == NULL || **string != ':') { + json_value_free(output_value); + return NULL; + } + SKIP_CHAR(string); + new_value = parse_value(string, nesting); + if (new_value == NULL) { + parson_free(new_key); + json_value_free(output_value); + return NULL; + } + if(json_object_add(output_object, new_key, new_value) == JSONFailure) { + parson_free(new_key); + parson_free(new_value); + json_value_free(output_value); + return NULL; + } + parson_free(new_key); + SKIP_WHITESPACES(string); + if (**string != ',') + break; + SKIP_CHAR(string); + SKIP_WHITESPACES(string); + } + SKIP_WHITESPACES(string); + if (**string != '}' || /* Trim object after parsing is over */ + json_object_resize(output_object, json_object_get_count(output_object)) == JSONFailure) { + json_value_free(output_value); + return NULL; + } + SKIP_CHAR(string); + return output_value; +} + +static JSON_Value * parse_array_value(const char **string, size_t nesting) { + JSON_Value *output_value = json_value_init_array(), *new_array_value = NULL; + JSON_Array *output_array = json_value_get_array(output_value); + if (!output_value) + return NULL; + SKIP_CHAR(string); + SKIP_WHITESPACES(string); + if (**string == ']') { /* empty array */ + SKIP_CHAR(string); + return output_value; + } + while (**string != '\0') { + new_array_value = parse_value(string, nesting); + if (!new_array_value) { + json_value_free(output_value); + return NULL; + } + if(json_array_add(output_array, new_array_value) == JSONFailure) { + parson_free(new_array_value); + json_value_free(output_value); + return NULL; + } + SKIP_WHITESPACES(string); + if (**string != ',') + break; + SKIP_CHAR(string); + SKIP_WHITESPACES(string); + } + SKIP_WHITESPACES(string); + if (**string != ']' || /* Trim array after parsing is over */ + json_array_resize(output_array, json_array_get_count(output_array)) == JSONFailure) { + json_value_free(output_value); + return NULL; + } + SKIP_CHAR(string); + return output_value; +} + +static JSON_Value * parse_string_value(const char **string) { + JSON_Value *value = NULL; + char *new_string = get_quoted_string(string); + if (new_string == NULL) + return NULL; + value = json_value_init_string_no_copy(new_string); + if (value == NULL) { + parson_free(new_string); + return NULL; + } + return value; +} + +static JSON_Value * parse_boolean_value(const char **string) { + size_t true_token_size = SIZEOF_TOKEN("true"); + size_t false_token_size = SIZEOF_TOKEN("false"); + if (strncmp("true", *string, true_token_size) == 0) { + *string += true_token_size; + return json_value_init_boolean(1); + } else if (strncmp("false", *string, false_token_size) == 0) { + *string += false_token_size; + return json_value_init_boolean(0); + } + return NULL; +} + +static JSON_Value * parse_number_value(const char **string) { + char *end; + double number = strtod(*string, &end); + JSON_Value *output_value; + if (is_decimal(*string, end - *string)) { + *string = end; + output_value = json_value_init_number(number); + } else { + output_value = NULL; + } + return output_value; +} + +static JSON_Value * parse_null_value(const char **string) { + size_t token_size = SIZEOF_TOKEN("null"); + if (strncmp("null", *string, token_size) == 0) { + *string += token_size; + return json_value_init_null(); + } + return NULL; +} + +/* Serialization */ +#define APPEND_STRING(str) do { written = append_string(buf, (str)); \ + if (written < 0) { return -1; } \ + if (buf != NULL) { buf += written; } \ + written_total += written; } while(0) + +#define APPEND_INDENT(level) do { written = append_indent(buf, (level)); \ + if (written < 0) { return -1; } \ + if (buf != NULL) { buf += written; } \ + written_total += written; } while(0) + +static int json_serialize_to_buffer_r(const JSON_Value *value, char *buf, int level, int is_pretty, char *num_buf) +{ + const char *key = NULL, *string = NULL; + JSON_Value *temp_value = NULL; + JSON_Array *array = NULL; + JSON_Object *object = NULL; + size_t i = 0, count = 0; + double num = 0.0; + int written = -1, written_total = 0; + + switch (json_value_get_type(value)) { + case JSONArray: + array = json_value_get_array(value); + count = json_array_get_count(array); + APPEND_STRING("["); + if (count > 0 && is_pretty) + APPEND_STRING("\n"); + for (i = 0; i < count; i++) { + if (is_pretty) + APPEND_INDENT(level+1); + temp_value = json_array_get_value(array, i); + written = json_serialize_to_buffer_r(temp_value, buf, level+1, is_pretty, num_buf); + if (written < 0) + return -1; + if (buf != NULL) + buf += written; + written_total += written; + if (i < (count - 1)) + APPEND_STRING(","); + if (is_pretty) + APPEND_STRING("\n"); + } + if (count > 0 && is_pretty) + APPEND_INDENT(level); + APPEND_STRING("]"); + return written_total; + case JSONObject: + object = json_value_get_object(value); + count = json_object_get_count(object); + APPEND_STRING("{"); + if (count > 0 && is_pretty) + APPEND_STRING("\n"); + for (i = 0; i < count; i++) { + key = json_object_get_name(object, i); + if (is_pretty) + APPEND_INDENT(level+1); + written = json_serialize_string(key, buf); + if (written < 0) + return -1; + if (buf != NULL) + buf += written; + written_total += written; + APPEND_STRING(":"); + if (is_pretty) + APPEND_STRING(" "); + temp_value = json_object_get_value(object, key); + written = json_serialize_to_buffer_r(temp_value, buf, level+1, is_pretty, num_buf); + if (written < 0) + return -1; + if (buf != NULL) + buf += written; + written_total += written; + if (i < (count - 1)) + APPEND_STRING(","); + if (is_pretty) + APPEND_STRING("\n"); + } + if (count > 0 && is_pretty) + APPEND_INDENT(level); + APPEND_STRING("}"); + return written_total; + case JSONString: + string = json_value_get_string(value); + written = json_serialize_string(string, buf); + if (written < 0) + return -1; + if (buf != NULL) + buf += written; + written_total += written; + return written_total; + case JSONBoolean: + if (json_value_get_boolean(value)) + APPEND_STRING("true"); + else + APPEND_STRING("false"); + return written_total; + case JSONNumber: + num = json_value_get_number(value); + if (buf != NULL) + num_buf = buf; + if (num == ((double)(int)num)) /* check if num is integer */ + written = sprintf(num_buf, "%d", (int)num); + else + written = sprintf(num_buf, DOUBLE_SERIALIZATION_FORMAT, num); + if (written < 0) + return -1; + if (buf != NULL) + buf += written; + written_total += written; + return written_total; + case JSONNull: + APPEND_STRING("null"); + return written_total; + case JSONError: + return -1; + default: + return -1; + } +} + +static int json_serialize_string(const char *string, char *buf) { + size_t i = 0, len = strlen(string); + char c = '\0'; + int written = -1, written_total = 0; + APPEND_STRING("\""); + for (i = 0; i < len; i++) { + c = string[i]; + switch (c) { + case '\"': APPEND_STRING("\\\""); break; + case '\\': APPEND_STRING("\\\\"); break; + case '/': APPEND_STRING("\\/"); break; /* to make json embeddable in xml\/html */ + case '\b': APPEND_STRING("\\b"); break; + case '\f': APPEND_STRING("\\f"); break; + case '\n': APPEND_STRING("\\n"); break; + case '\r': APPEND_STRING("\\r"); break; + case '\t': APPEND_STRING("\\t"); break; + default: + if (buf != NULL) { + buf[0] = c; + buf += 1; + } + written_total += 1; + break; + } + } + APPEND_STRING("\""); + return written_total; +} + +static int append_indent(char *buf, int level) { + int i; + int written = -1, written_total = 0; + for (i = 0; i < level; i++) { + APPEND_STRING(" "); + } + return written_total; +} + +static int append_string(char *buf, const char *string) { + if (buf == NULL) { + return (int)strlen(string); + } + return sprintf(buf, "%s", string); +} + +#undef APPEND_STRING +#undef APPEND_INDENT + +/* Parser API */ +JSON_Value * json_parse_file(const char *filename) { + char *file_contents = read_file(filename); + JSON_Value *output_value = NULL; + if (file_contents == NULL) + return NULL; + output_value = json_parse_string(file_contents); + parson_free(file_contents); + return output_value; +} + +JSON_Value * json_parse_file_with_comments(const char *filename) { + char *file_contents = read_file(filename); + JSON_Value *output_value = NULL; + if (file_contents == NULL) + return NULL; + output_value = json_parse_string_with_comments(file_contents); + parson_free(file_contents); + return output_value; +} + +JSON_Value * json_parse_string(const char *string) { + if (string == NULL) + return NULL; + SKIP_WHITESPACES(&string); + if (*string != '{' && *string != '[') + return NULL; + return parse_value((const char**)&string, 0); +} + +JSON_Value * json_parse_string_with_comments(const char *string) { + JSON_Value *result = NULL; + char *string_mutable_copy = NULL, *string_mutable_copy_ptr = NULL; + string_mutable_copy = parson_strdup(string); + if (string_mutable_copy == NULL) + return NULL; + remove_comments(string_mutable_copy, "/*", "*/"); + remove_comments(string_mutable_copy, "//", "\n"); + string_mutable_copy_ptr = string_mutable_copy; + SKIP_WHITESPACES(&string_mutable_copy_ptr); + if (*string_mutable_copy_ptr != '{' && *string_mutable_copy_ptr != '[') { + parson_free(string_mutable_copy); + return NULL; + } + result = parse_value((const char**)&string_mutable_copy_ptr, 0); + parson_free(string_mutable_copy); + return result; +} + + +/* JSON Object API */ + +JSON_Value * json_object_get_value(const JSON_Object *object, const char *name) { + if (object == NULL || name == NULL) + return NULL; + return json_object_nget_value(object, name, strlen(name)); +} + +const char * json_object_get_string(const JSON_Object *object, const char *name) { + return json_value_get_string(json_object_get_value(object, name)); +} + +double json_object_get_number(const JSON_Object *object, const char *name) { + return json_value_get_number(json_object_get_value(object, name)); +} + +JSON_Object * json_object_get_object(const JSON_Object *object, const char *name) { + return json_value_get_object(json_object_get_value(object, name)); +} + +JSON_Array * json_object_get_array(const JSON_Object *object, const char *name) { + return json_value_get_array(json_object_get_value(object, name)); +} + +int json_object_get_boolean(const JSON_Object *object, const char *name) { + return json_value_get_boolean(json_object_get_value(object, name)); +} + +JSON_Value * json_object_dotget_value(const JSON_Object *object, const char *name) { + const char *dot_position = strchr(name, '.'); + if (!dot_position) + return json_object_get_value(object, name); + object = json_value_get_object(json_object_nget_value(object, name, dot_position - name)); + return json_object_dotget_value(object, dot_position + 1); +} + +const char * json_object_dotget_string(const JSON_Object *object, const char *name) { + return json_value_get_string(json_object_dotget_value(object, name)); +} + +double json_object_dotget_number(const JSON_Object *object, const char *name) { + return json_value_get_number(json_object_dotget_value(object, name)); +} + +JSON_Object * json_object_dotget_object(const JSON_Object *object, const char *name) { + return json_value_get_object(json_object_dotget_value(object, name)); +} + +JSON_Array * json_object_dotget_array(const JSON_Object *object, const char *name) { + return json_value_get_array(json_object_dotget_value(object, name)); +} + +int json_object_dotget_boolean(const JSON_Object *object, const char *name) { + return json_value_get_boolean(json_object_dotget_value(object, name)); +} + +size_t json_object_get_count(const JSON_Object *object) { + return object ? object->count : 0; +} + +const char * json_object_get_name(const JSON_Object *object, size_t index) { + if (index >= json_object_get_count(object)) + return NULL; + return object->names[index]; +} + +/* JSON Array API */ +JSON_Value * json_array_get_value(const JSON_Array *array, size_t index) { + if (index >= json_array_get_count(array)) + return NULL; + return array->items[index]; +} + +const char * json_array_get_string(const JSON_Array *array, size_t index) { + return json_value_get_string(json_array_get_value(array, index)); +} + +double json_array_get_number(const JSON_Array *array, size_t index) { + return json_value_get_number(json_array_get_value(array, index)); +} + +JSON_Object * json_array_get_object(const JSON_Array *array, size_t index) { + return json_value_get_object(json_array_get_value(array, index)); +} + +JSON_Array * json_array_get_array(const JSON_Array *array, size_t index) { + return json_value_get_array(json_array_get_value(array, index)); +} + +int json_array_get_boolean(const JSON_Array *array, size_t index) { + return json_value_get_boolean(json_array_get_value(array, index)); +} + +size_t json_array_get_count(const JSON_Array *array) { + return array ? array->count : 0; +} + +/* JSON Value API */ +JSON_Value_Type json_value_get_type(const JSON_Value *value) { + return value ? value->type : JSONError; +} + +JSON_Object * json_value_get_object(const JSON_Value *value) { + return json_value_get_type(value) == JSONObject ? value->value.object : NULL; +} + +JSON_Array * json_value_get_array(const JSON_Value *value) { + return json_value_get_type(value) == JSONArray ? value->value.array : NULL; +} + +const char * json_value_get_string(const JSON_Value *value) { + return json_value_get_type(value) == JSONString ? value->value.string : NULL; +} + +double json_value_get_number(const JSON_Value *value) { + return json_value_get_type(value) == JSONNumber ? value->value.number : 0; +} + +int json_value_get_boolean(const JSON_Value *value) { + return json_value_get_type(value) == JSONBoolean ? value->value.boolean : -1; +} + +void json_value_free(JSON_Value *value) { + switch (json_value_get_type(value)) { + case JSONObject: + json_object_free(value->value.object); + break; + case JSONString: + if (value->value.string) { parson_free(value->value.string); } + break; + case JSONArray: + json_array_free(value->value.array); + break; + default: + break; + } + parson_free(value); +} + +JSON_Value * json_value_init_object(void) { + JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); + if (!new_value) + return NULL; + new_value->type = JSONObject; + new_value->value.object = json_object_init(); + if (!new_value->value.object) { + parson_free(new_value); + return NULL; + } + return new_value; +} + +JSON_Value * json_value_init_array(void) { + JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); + if (!new_value) + return NULL; + new_value->type = JSONArray; + new_value->value.array = json_array_init(); + if (!new_value->value.array) { + parson_free(new_value); + return NULL; + } + return new_value; +} + +JSON_Value * json_value_init_string(const char *string) { + char *copy = NULL; + JSON_Value *value; + size_t string_len = 0; + if (string == NULL) + return NULL; + string_len = strlen(string); + if (!is_valid_utf8(string, string_len)) + return NULL; + copy = parson_strndup(string, string_len); + if (copy == NULL) + return NULL; + value = json_value_init_string_no_copy(copy); + if (value == NULL) + parson_free(copy); + return value; +} + +JSON_Value * json_value_init_number(double number) { + JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); + if (!new_value) + return NULL; + new_value->type = JSONNumber; + new_value->value.number = number; + return new_value; +} + +JSON_Value * json_value_init_boolean(int boolean) { + JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); + if (!new_value) + return NULL; + new_value->type = JSONBoolean; + new_value->value.boolean = boolean ? 1 : 0; + return new_value; +} + +JSON_Value * json_value_init_null(void) { + JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value)); + if (!new_value) + return NULL; + new_value->type = JSONNull; + return new_value; +} + +JSON_Value * json_value_deep_copy(const JSON_Value *value) { + size_t i = 0; + JSON_Value *return_value = NULL, *temp_value_copy = NULL, *temp_value = NULL; + const char *temp_string = NULL, *temp_key = NULL; + char *temp_string_copy = NULL; + JSON_Array *temp_array = NULL, *temp_array_copy = NULL; + JSON_Object *temp_object = NULL, *temp_object_copy = NULL; + + switch (json_value_get_type(value)) { + case JSONArray: + temp_array = json_value_get_array(value); + return_value = json_value_init_array(); + if (return_value == NULL) + return NULL; + temp_array_copy = json_value_get_array(return_value); + for (i = 0; i < json_array_get_count(temp_array); i++) { + temp_value = json_array_get_value(temp_array, i); + temp_value_copy = json_value_deep_copy(temp_value); + if (temp_value_copy == NULL) { + json_value_free(return_value); + return NULL; + } + if (json_array_add(temp_array_copy, temp_value_copy) == JSONFailure) { + json_value_free(return_value); + json_value_free(temp_value_copy); + return NULL; + } + } + return return_value; + case JSONObject: + temp_object = json_value_get_object(value); + return_value = json_value_init_object(); + if (return_value == NULL) + return NULL; + temp_object_copy = json_value_get_object(return_value); + for (i = 0; i < json_object_get_count(temp_object); i++) { + temp_key = json_object_get_name(temp_object, i); + temp_value = json_object_get_value(temp_object, temp_key); + temp_value_copy = json_value_deep_copy(temp_value); + if (temp_value_copy == NULL) { + json_value_free(return_value); + return NULL; + } + if (json_object_add(temp_object_copy, temp_key, temp_value_copy) == JSONFailure) { + json_value_free(return_value); + json_value_free(temp_value_copy); + return NULL; + } + } + return return_value; + case JSONBoolean: + return json_value_init_boolean(json_value_get_boolean(value)); + case JSONNumber: + return json_value_init_number(json_value_get_number(value)); + case JSONString: + temp_string = json_value_get_string(value); + temp_string_copy = parson_strdup(temp_string); + if (temp_string_copy == NULL) + return NULL; + return_value = json_value_init_string_no_copy(temp_string_copy); + if (return_value == NULL) + parson_free(temp_string_copy); + return return_value; + case JSONNull: + return json_value_init_null(); + case JSONError: + return NULL; + default: + return NULL; + } +} + +size_t json_serialization_size(const JSON_Value *value) { + char num_buf[1100]; /* recursively allocating buffer on stack is a bad idea, so let's do it only once */ + int res = json_serialize_to_buffer_r(value, NULL, 0, 0, num_buf); + return res < 0 ? 0 : (size_t)(res + 1); +} + +JSON_Status json_serialize_to_buffer(const JSON_Value *value, char *buf, size_t buf_size_in_bytes) { + int written = -1; + size_t needed_size_in_bytes = json_serialization_size(value); + if (needed_size_in_bytes == 0 || buf_size_in_bytes < needed_size_in_bytes) { + return JSONFailure; + } + written = json_serialize_to_buffer_r(value, buf, 0, 0, NULL); + if (written < 0) + return JSONFailure; + return JSONSuccess; +} + +JSON_Status json_serialize_to_file(const JSON_Value *value, const char *filename) { + JSON_Status return_code = JSONSuccess; + FILE *fp = NULL; + char *serialized_string = json_serialize_to_string(value); + if (serialized_string == NULL) { + return JSONFailure; + } + fp = fopen (filename, "w"); + if (fp != NULL) { + if (fputs (serialized_string, fp) == EOF) { + return_code = JSONFailure; + } + if (fclose (fp) == EOF) { + return_code = JSONFailure; + } + } + json_free_serialized_string(serialized_string); + return return_code; +} + +char * json_serialize_to_string(const JSON_Value *value) { + JSON_Status serialization_result = JSONFailure; + size_t buf_size_bytes = json_serialization_size(value); + char *buf = NULL; + if (buf_size_bytes == 0) { + return NULL; + } + buf = (char*)parson_malloc(buf_size_bytes); + if (buf == NULL) + return NULL; + serialization_result = json_serialize_to_buffer(value, buf, buf_size_bytes); + if (serialization_result == JSONFailure) { + json_free_serialized_string(buf); + return NULL; + } + return buf; +} + +size_t json_serialization_size_pretty(const JSON_Value *value) { + char num_buf[1100]; /* recursively allocating buffer on stack is a bad idea, so let's do it only once */ + int res = json_serialize_to_buffer_r(value, NULL, 0, 1, num_buf); + return res < 0 ? 0 : (size_t)(res + 1); +} + +JSON_Status json_serialize_to_buffer_pretty(const JSON_Value *value, char *buf, size_t buf_size_in_bytes) { + int written = -1; + size_t needed_size_in_bytes = json_serialization_size_pretty(value); + if (needed_size_in_bytes == 0 || buf_size_in_bytes < needed_size_in_bytes) + return JSONFailure; + written = json_serialize_to_buffer_r(value, buf, 0, 1, NULL); + if (written < 0) + return JSONFailure; + return JSONSuccess; +} + +JSON_Status json_serialize_to_file_pretty(const JSON_Value *value, const char *filename) { + JSON_Status return_code = JSONSuccess; + FILE *fp = NULL; + char *serialized_string = json_serialize_to_string_pretty(value); + if (serialized_string == NULL) { + return JSONFailure; + } + fp = fopen (filename, "w"); + if (fp != NULL) { + if (fputs (serialized_string, fp) == EOF) { + return_code = JSONFailure; + } + if (fclose (fp) == EOF) { + return_code = JSONFailure; + } + } + json_free_serialized_string(serialized_string); + return return_code; +} + +char * json_serialize_to_string_pretty(const JSON_Value *value) { + JSON_Status serialization_result = JSONFailure; + size_t buf_size_bytes = json_serialization_size_pretty(value); + char *buf = NULL; + if (buf_size_bytes == 0) { + return NULL; + } + buf = (char*)parson_malloc(buf_size_bytes); + if (buf == NULL) + return NULL; + serialization_result = json_serialize_to_buffer_pretty(value, buf, buf_size_bytes); + if (serialization_result == JSONFailure) { + json_free_serialized_string(buf); + return NULL; + } + return buf; +} + +void json_free_serialized_string(char *string) { + parson_free(string); +} + +JSON_Status json_array_remove(JSON_Array *array, size_t ix) { + JSON_Value *temp_value = NULL; + size_t last_element_ix = 0; + if (array == NULL || ix >= json_array_get_count(array)) { + return JSONFailure; + } + last_element_ix = json_array_get_count(array) - 1; + json_value_free(json_array_get_value(array, ix)); + if (ix != last_element_ix) { /* Replace value with one from the end of array */ + temp_value = json_array_get_value(array, last_element_ix); + if (temp_value == NULL) { + return JSONFailure; + } + array->items[ix] = temp_value; + } + array->count -= 1; + return JSONSuccess; +} + +JSON_Status json_array_replace_value(JSON_Array *array, size_t ix, JSON_Value *value) { + if (array == NULL || value == NULL || ix >= json_array_get_count(array)) { + return JSONFailure; + } + json_value_free(json_array_get_value(array, ix)); + array->items[ix] = value; + return JSONSuccess; +} + +JSON_Status json_array_replace_string(JSON_Array *array, size_t i, const char* string) { + JSON_Value *value = json_value_init_string(string); + if (value == NULL) + return JSONFailure; + if (json_array_replace_value(array, i, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_replace_number(JSON_Array *array, size_t i, double number) { + JSON_Value *value = json_value_init_number(number); + if (value == NULL) + return JSONFailure; + if (json_array_replace_value(array, i, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_replace_boolean(JSON_Array *array, size_t i, int boolean) { + JSON_Value *value = json_value_init_boolean(boolean); + if (value == NULL) + return JSONFailure; + if (json_array_replace_value(array, i, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_replace_null(JSON_Array *array, size_t i) { + JSON_Value *value = json_value_init_null(); + if (value == NULL) + return JSONFailure; + if (json_array_replace_value(array, i, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_clear(JSON_Array *array) { + size_t i = 0; + if (array == NULL) + return JSONFailure; + for (i = 0; i < json_array_get_count(array); i++) { + json_value_free(json_array_get_value(array, i)); + } + array->count = 0; + return JSONSuccess; +} + +JSON_Status json_array_append_value(JSON_Array *array, JSON_Value *value) { + if (array == NULL || value == NULL) + return JSONFailure; + return json_array_add(array, value); +} + +JSON_Status json_array_append_string(JSON_Array *array, const char *string) { + JSON_Value *value = json_value_init_string(string); + if (value == NULL) + return JSONFailure; + if (json_array_append_value(array, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_append_number(JSON_Array *array, double number) { + JSON_Value *value = json_value_init_number(number); + if (value == NULL) + return JSONFailure; + if (json_array_append_value(array, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_append_boolean(JSON_Array *array, int boolean) { + JSON_Value *value = json_value_init_boolean(boolean); + if (value == NULL) + return JSONFailure; + if (json_array_append_value(array, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_array_append_null(JSON_Array *array) { + JSON_Value *value = json_value_init_null(); + if (value == NULL) + return JSONFailure; + if (json_array_append_value(array, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_object_set_value(JSON_Object *object, const char *name, JSON_Value *value) { + size_t i = 0; + JSON_Value *old_value; + if (object == NULL || name == NULL || value == NULL) + return JSONFailure; + old_value = json_object_get_value(object, name); + if (old_value != NULL) { /* free and overwrite old value */ + json_value_free(old_value); + for (i = 0; i < json_object_get_count(object); i++) { + if (strcmp(object->names[i], name) == 0) { + object->values[i] = value; + return JSONSuccess; + } + } + } + /* add new key value pair */ + return json_object_add(object, name, value); +} + +JSON_Status json_object_set_string(JSON_Object *object, const char *name, const char *string) { + return json_object_set_value(object, name, json_value_init_string(string)); +} + +JSON_Status json_object_set_number(JSON_Object *object, const char *name, double number) { + return json_object_set_value(object, name, json_value_init_number(number)); +} + +JSON_Status json_object_set_boolean(JSON_Object *object, const char *name, int boolean) { + return json_object_set_value(object, name, json_value_init_boolean(boolean)); +} + +JSON_Status json_object_set_null(JSON_Object *object, const char *name) { + return json_object_set_value(object, name, json_value_init_null()); +} + +JSON_Status json_object_dotset_value(JSON_Object *object, const char *name, JSON_Value *value) { + const char *dot_pos = NULL; + char *current_name = NULL; + JSON_Object *temp_obj = NULL; + JSON_Value *new_value = NULL; + if (value == NULL || name == NULL || value == NULL) + return JSONFailure; + dot_pos = strchr(name, '.'); + if (dot_pos == NULL) { + return json_object_set_value(object, name, value); + } else { + current_name = parson_strndup(name, dot_pos - name); + temp_obj = json_object_get_object(object, current_name); + if (temp_obj == NULL) { + new_value = json_value_init_object(); + if (new_value == NULL) { + parson_free(current_name); + return JSONFailure; + } + if (json_object_add(object, current_name, new_value) == JSONFailure) { + json_value_free(new_value); + parson_free(current_name); + return JSONFailure; + } + temp_obj = json_object_get_object(object, current_name); + } + parson_free(current_name); + return json_object_dotset_value(temp_obj, dot_pos + 1, value); + } +} + +JSON_Status json_object_dotset_string(JSON_Object *object, const char *name, const char *string) { + JSON_Value *value = json_value_init_string(string); + if (value == NULL) + return JSONFailure; + if (json_object_dotset_value(object, name, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_object_dotset_number(JSON_Object *object, const char *name, double number) { + JSON_Value *value = json_value_init_number(number); + if (value == NULL) + return JSONFailure; + if (json_object_dotset_value(object, name, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_object_dotset_boolean(JSON_Object *object, const char *name, int boolean) { + JSON_Value *value = json_value_init_boolean(boolean); + if (value == NULL) + return JSONFailure; + if (json_object_dotset_value(object, name, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_object_dotset_null(JSON_Object *object, const char *name) { + JSON_Value *value = json_value_init_null(); + if (value == NULL) + return JSONFailure; + if (json_object_dotset_value(object, name, value) == JSONFailure) { + json_value_free(value); + return JSONFailure; + } + return JSONSuccess; +} + +JSON_Status json_object_remove(JSON_Object *object, const char *name) { + size_t i = 0, last_item_index = 0; + if (object == NULL || json_object_get_value(object, name) == NULL) + return JSONFailure; + last_item_index = json_object_get_count(object) - 1; + for (i = 0; i < json_object_get_count(object); i++) { + if (strcmp(object->names[i], name) == 0) { + parson_free(object->names[i]); + json_value_free(object->values[i]); + if (i != last_item_index) { /* Replace key value pair with one from the end */ + object->names[i] = object->names[last_item_index]; + object->values[i] = object->values[last_item_index]; + } + object->count -= 1; + return JSONSuccess; + } + } + return JSONFailure; /* No execution path should end here */ +} + +JSON_Status json_object_dotremove(JSON_Object *object, const char *name) { + const char *dot_pos = strchr(name, '.'); + char *current_name = NULL; + JSON_Object *temp_obj = NULL; + if (dot_pos == NULL) { + return json_object_remove(object, name); + } else { + current_name = parson_strndup(name, dot_pos - name); + temp_obj = json_object_get_object(object, current_name); + if (temp_obj == NULL) { + parson_free(current_name); + return JSONFailure; + } + parson_free(current_name); + return json_object_dotremove(temp_obj, dot_pos + 1); + } +} + +JSON_Status json_object_clear(JSON_Object *object) { + size_t i = 0; + if (object == NULL) { + return JSONFailure; + } + for (i = 0; i < json_object_get_count(object); i++) { + parson_free(object->names[i]); + json_value_free(object->values[i]); + } + object->count = 0; + return JSONSuccess; +} + +JSON_Status json_validate(const JSON_Value *schema, const JSON_Value *value) { + JSON_Value *temp_schema_value = NULL, *temp_value = NULL; + JSON_Array *schema_array = NULL, *value_array = NULL; + JSON_Object *schema_object = NULL, *value_object = NULL; + JSON_Value_Type schema_type = JSONError, value_type = JSONError; + const char *key = NULL; + size_t i = 0, count = 0; + if (schema == NULL || value == NULL) + return JSONFailure; + schema_type = json_value_get_type(schema); + value_type = json_value_get_type(value); + if (schema_type != value_type && schema_type != JSONNull) /* null represents all values */ + return JSONFailure; + switch (schema_type) { + case JSONArray: + schema_array = json_value_get_array(schema); + value_array = json_value_get_array(value); + count = json_array_get_count(schema_array); + if (count == 0) + return JSONSuccess; /* Empty array allows all types */ + /* Get first value from array, rest is ignored */ + temp_schema_value = json_array_get_value(schema_array, 0); + for (i = 0; i < json_array_get_count(value_array); i++) { + temp_value = json_array_get_value(value_array, i); + if (json_validate(temp_schema_value, temp_value) == 0) { + return JSONFailure; + } + } + return JSONSuccess; + case JSONObject: + schema_object = json_value_get_object(schema); + value_object = json_value_get_object(value); + count = json_object_get_count(schema_object); + if (count == 0) + return JSONSuccess; /* Empty object allows all objects */ + else if (json_object_get_count(value_object) < count) + return JSONFailure; /* Tested object mustn't have less name-value pairs than schema */ + for (i = 0; i < count; i++) { + key = json_object_get_name(schema_object, i); + temp_schema_value = json_object_get_value(schema_object, key); + temp_value = json_object_get_value(value_object, key); + if (temp_value == NULL) + return JSONFailure; + if (json_validate(temp_schema_value, temp_value) == JSONFailure) + return JSONFailure; + } + return JSONSuccess; + case JSONString: case JSONNumber: case JSONBoolean: case JSONNull: + return JSONSuccess; /* equality already tested before switch */ + case JSONError: default: + return JSONFailure; + } +} + +JSON_Status json_value_equals(const JSON_Value *a, const JSON_Value *b) { + JSON_Object *a_object = NULL, *b_object = NULL; + JSON_Array *a_array = NULL, *b_array = NULL; + const char *a_string = NULL, *b_string = NULL; + const char *key = NULL; + size_t a_count = 0, b_count = 0, i = 0; + JSON_Value_Type a_type, b_type; + a_type = json_value_get_type(a); + b_type = json_value_get_type(b); + if (a_type != b_type) { + return 0; + } + switch (a_type) { + case JSONArray: + a_array = json_value_get_array(a); + b_array = json_value_get_array(b); + a_count = json_array_get_count(a_array); + b_count = json_array_get_count(b_array); + if (a_count != b_count) { + return 0; + } + for (i = 0; i < a_count; i++) { + if (!json_value_equals(json_array_get_value(a_array, i), + json_array_get_value(b_array, i))) { + return 0; + } + } + return 1; + case JSONObject: + a_object = json_value_get_object(a); + b_object = json_value_get_object(b); + a_count = json_object_get_count(a_object); + b_count = json_object_get_count(b_object); + if (a_count != b_count) { + return 0; + } + for (i = 0; i < a_count; i++) { + key = json_object_get_name(a_object, i); + if (!json_value_equals(json_object_get_value(a_object, key), + json_object_get_value(b_object, key))) { + return 0; + } + } + return 1; + case JSONString: + a_string = json_value_get_string(a); + b_string = json_value_get_string(b); + return strcmp(a_string, b_string) == 0; + case JSONBoolean: + return json_value_get_boolean(a) == json_value_get_boolean(b); + case JSONNumber: + return fabs(json_value_get_number(a) - json_value_get_number(b)) < 0.000001; /* EPSILON */ + case JSONError: + return 1; + case JSONNull: + return 1; + default: + return 1; + } +} + +JSON_Value_Type json_type(const JSON_Value *value) { + return json_value_get_type(value); +} + +JSON_Object * json_object (const JSON_Value *value) { + return json_value_get_object(value); +} + +JSON_Array * json_array (const JSON_Value *value) { + return json_value_get_array(value); +} + +const char * json_string (const JSON_Value *value) { + return json_value_get_string(value); +} + +double json_number (const JSON_Value *value) { + return json_value_get_number(value); +} + +int json_boolean(const JSON_Value *value) { + return json_value_get_boolean(value); +} + +void json_set_allocation_functions(JSON_Malloc_Function malloc_fun, JSON_Free_Function free_fun) { + parson_malloc = malloc_fun; + parson_free = free_fun; +} diff --git a/lora_pkt_fwd/src/timersync.c b/lora_pkt_fwd/src/timersync.c new file mode 100644 index 0000000..3dd919b --- /dev/null +++ b/lora_pkt_fwd/src/timersync.c @@ -0,0 +1,146 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + LoRa concentrator : Timer synchronization + Provides synchronization between unix, concentrator and gps clocks + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Michael Coracin +*/ + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <stdio.h> /* printf, fprintf, snprintf, fopen, fputs */ +#include <stdint.h> /* C99 types */ +#include <pthread.h> + +#include "trace.h" +#include "timersync.h" +#include "loragw_hal.h" +#include "loragw_reg.h" +#include "loragw_aux.h" + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS & TYPES -------------------------------------------- */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define timersub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((result)->tv_usec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_usec += 1000000; \ + } \ + } while (0) + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE VARIABLES (GLOBAL) ------------------------------------------- */ + +static pthread_mutex_t mx_timersync = PTHREAD_MUTEX_INITIALIZER; /* control access to timer sync offsets */ +static struct timeval offset_unix_concent = {0,0}; /* timer offset between unix host and concentrator */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE SHARED VARIABLES (GLOBAL) ------------------------------------ */ +extern bool exit_sig; +extern bool quit_sig; +extern pthread_mutex_t mx_concent; + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS DEFINITION ------------------------------------------ */ + +int get_concentrator_time(struct timeval *concent_time, struct timeval unix_time) { + struct timeval local_timeval; + + if (concent_time == NULL) { + MSG("ERROR: %s invalid parameter\n", __FUNCTION__); + return -1; + } + + pthread_mutex_lock(&mx_timersync); /* protect global variable access */ + timersub(&unix_time, &offset_unix_concent, &local_timeval); + pthread_mutex_unlock(&mx_timersync); + + /* TODO: handle sx1301 coutner wrap-up !! */ + concent_time->tv_sec = local_timeval.tv_sec; + concent_time->tv_usec = local_timeval.tv_usec; + + MSG_DEBUG(DEBUG_TIMERSYNC, " --> TIME: unix current time is %ld,%ld\n", unix_time.tv_sec, unix_time.tv_usec); + MSG_DEBUG(DEBUG_TIMERSYNC, " offset is %ld,%ld\n", offset_unix_concent.tv_sec, offset_unix_concent.tv_usec); + MSG_DEBUG(DEBUG_TIMERSYNC, " sx1301 current time is %ld,%ld\n", local_timeval.tv_sec, local_timeval.tv_usec); + + return 0; +} + +/* ---------------------------------------------------------------------------------------------- */ +/* --- THREAD 6: REGULARLAY MONITOR THE OFFSET BETWEEN UNIX CLOCK AND CONCENTRATOR CLOCK -------- */ + +void thread_timersync(void) { + struct timeval unix_timeval; + struct timeval concentrator_timeval; + uint32_t sx1301_timecount = 0; + struct timeval offset_previous = {0,0}; + struct timeval offset_drift = {0,0}; /* delta between current and previous offset */ + + while (!exit_sig && !quit_sig) { + /* Regularly disable GPS mode of concentrator's counter, in order to get + real timer value for synchronizing with host's unix timer */ + MSG("\nINFO: Disabling GPS mode for concentrator's counter...\n"); + pthread_mutex_lock(&mx_concent); + lgw_reg_w(LGW_GPS_EN, 0); + pthread_mutex_unlock(&mx_concent); + + /* Get current unix time */ + gettimeofday(&unix_timeval, NULL); + + /* Get current concentrator counter value (1MHz) */ + pthread_mutex_lock(&mx_concent); + lgw_get_trigcnt(&sx1301_timecount); + pthread_mutex_unlock(&mx_concent); + concentrator_timeval.tv_sec = sx1301_timecount / 1000000UL; + concentrator_timeval.tv_usec = sx1301_timecount - (concentrator_timeval.tv_sec * 1000000UL); + + /* Compute offset between unix and concentrator timers, with microsecond precision */ + offset_previous.tv_sec = offset_unix_concent.tv_sec; + offset_previous.tv_usec = offset_unix_concent.tv_usec; + + /* TODO: handle sx1301 coutner wrap-up */ + pthread_mutex_lock(&mx_timersync); /* protect global variable access */ + timersub(&unix_timeval, &concentrator_timeval, &offset_unix_concent); + pthread_mutex_unlock(&mx_timersync); + + timersub(&offset_unix_concent, &offset_previous, &offset_drift); + + MSG_DEBUG(DEBUG_TIMERSYNC, " sx1301 = %u (µs) - timeval (%ld,%ld)\n", + sx1301_timecount, + concentrator_timeval.tv_sec, + concentrator_timeval.tv_usec); + MSG_DEBUG(DEBUG_TIMERSYNC, " unix_timeval = %ld,%ld\n", unix_timeval.tv_sec, unix_timeval.tv_usec); + + MSG("INFO: host/sx1301 time offset=(%lds:%ldµs) - drift=%ldµs\n", + offset_unix_concent.tv_sec, + offset_unix_concent.tv_usec, + offset_drift.tv_sec * 1000000UL + offset_drift.tv_usec); + MSG("INFO: Enabling GPS mode for concentrator's counter.\n\n"); + pthread_mutex_lock(&mx_concent); /* TODO: Is it necessary to protect here? */ + lgw_reg_w(LGW_GPS_EN, 1); + pthread_mutex_unlock(&mx_concent); + + /* delay next sync */ + /* If we consider a crystal oscillator precision of about 20ppm worst case, and a clock + running at 1MHz, this would mean 1µs drift every 50000µs (10000000/20). + As here the time precision is not critical, we should be able to cope with at least 1ms drift, + which should occur after 50s (50000µs * 1000). + Let's set the thread sleep to 1 minute for now */ + wait_ms(60000); + } +} diff --git a/lora_pkt_fwd/update_gwid.sh b/lora_pkt_fwd/update_gwid.sh new file mode 100755 index 0000000..2aeb87f --- /dev/null +++ b/lora_pkt_fwd/update_gwid.sh @@ -0,0 +1,31 @@ +#!/bin/sh + +# This script is a helper to update the Gateway_ID field of given +# JSON configuration file, as a EUI-64 address generated from the 48-bits MAC +# address of the device it is run from. +# +# Usage examples: +# ./update_gwid.sh ./local_conf.json + +iot_sk_update_gwid() { + # get gateway ID from its MAC address to generate an EUI-64 address + GWID_MIDFIX="FFFE" + GWID_BEGIN=$(ip link show eth0 | awk '/ether/ {print $2}' | awk -F\: '{print $1$2$3}') + GWID_END=$(ip link show eth0 | awk '/ether/ {print $2}' | awk -F\: '{print $4$5$6}') + + # replace last 8 digits of default gateway ID by actual GWID, in given JSON configuration file + sed -i 's/\(^\s*"gateway_ID":\s*"\).\{16\}"\s*\(,\?\).*$/\1'${GWID_BEGIN}${GWID_MIDFIX}${GWID_END}'"\2/' $1 + + echo "Gateway_ID set to "$GWID_BEGIN$GWID_MIDFIX$GWID_END" in file "$1 +} + +if [ $# -ne 1 ] +then + echo "Usage: $0 [filename]" + echo " filename: Path to JSON file containing Gateway_ID for packet forwarder" + exit 1 +fi + +iot_sk_update_gwid $1 + +exit 0 diff --git a/readme.md b/readme.md new file mode 100644 index 0000000..d25574a --- /dev/null +++ b/readme.md @@ -0,0 +1,247 @@ + / _____) _ | | + ( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | + (______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Lora network packet forwarder project +====================================== + +1. Core program: lora_pkt_fwd +------------------------------- + +The packet forwarder is a program running on the host of a Lora gateway that +forwards RF packets receive by the concentrator to a server through a IP/UDP +link, and emits RF packets that are sent by the server. It can also emit a +network-wide GPS-synchronous beacon signal used for coordinating all nodes of +the network. + + ((( Y ))) + | + | + +- -|- - - - - - - - - - - - -+ xxxxxxxxxxxx +--------+ + |+--+-----------+ +------+| xx x x xxx | | + || | | || xx Internet xx | | + || Concentrator |<----+ Host |<------xx or xx-------->| | + || | SPI | || xx Intranet xx | Server | + |+--------------+ +------+| xxxx x xxxx | | + | ^ ^ | xxxxxxxx | | + | | PPS +-----+ NMEA | | | | + | +------| GPS |-------+ | +--------+ + | +-----+ | + | | + | Gateway | + +- - - - - - - - - - - - - - -+ + +Uplink: radio packets received by the gateway, with metadata added by the +gateway, forwarded to the server. Might also include gateway status. + +Downlink: packets generated by the server, with additional metadata, to be +transmitted by the gateway on the radio channel. Might also include +configuration data for the gateway. + +2. Helper programs +------------------- + +Those programs are included in the project to provide examples on how to +communicate with the packet forwarder, and to help the system builder use it +without having to implement a full Lora network server. + +### 3.1. util_sink ### + +The packet sink is a simple helper program listening on a single port for UDP +datagrams, and displaying a message each time one is received. The content of +the datagram itself is ignored. + +### 3.2. util_ack ### + +The packet acknowledger is a simple helper program listening on a single UDP +port and responding to PUSH_DATA datagrams with PUSH_ACK, and to PULL_DATA +datagrams with PULL_ACK. + +### 3.3. util_tx_test ### + +The network packet sender is a simple helper program used to send packets +through the gateway-to-server downlink route. + +4. Helper scripts +----------------- + +### 4.1. lora_gateway/reset_lgw.sh + +This script, provided with the HAL (lora_gateway), must be launched on IoT Start +Kit platform to reset concentrator chip through GPIO, before starting any +application using the concentrator, like the packet forwarder. + +### 4.2. packet_forwarder/lora_pkt_fwd/update_gwid.sh + +This script allows automatic update of Gateway_ID with unique MAC address, in +packet forwarder JSON configuration file. +Please refer to the script header for more details. + +5. Changelog +------------- + +### v4.0.1 - 2017-03-16 ### + +* Class-B: Added xtal error correction to beacon frequency +* Class-B: Added support for all regions to beacon frame format (various +datarates imply different frame sizes), as defined by LoRaWAN v1.1. + +### v4.0.0 - 2017-01-10 ### + +* Added Class-B support, as defined in LoRaWAN v1.1 +* Downlink only support "tmst" or "tmms" timestamp. "time" is not supported +anymore ("time" field is kept in Uplink as an informative field). +* Reworked thread_gps to handle GPS UBX messages for native GPS time. +* Updated Gateway <-> NetworkServer protocol to describe the new "tmms" field. +* Updated global_conf.PCB286*.json to remove indexes of the TX gain LUT above +20dBm. Use PCB336 (aka GW v1.5) to comply with ETSI TX mask between 20dBm and +27dBm. + +### v3.1.0 - 2016-09-07 ### + +* Updated "Listen-Before-Talk" JSON configuration to match with LBT rework. +* Added TX Notch Filter JSON configuration. +* Updated Parson library to latest version +* Fixed Class-B beacon CRC-16 calculation +* Removed JiT time_on_air local function, and use lgw_time_on_air() function + +### v3.0.0 - 2016-05-19 ### + +* Merged all different flavours of packet forwarder into one unique lora_pkt_fwd + Note: Various flavours can still be achieved using the corresponding + global_conf.json.XXX file provided in lora_pkt_fwd/cfg. +* Added downlink "just-in-time" scheduling to optimize downlink capacity. +* Updated Gateway <-> NetworkServer protocol to describe the new format of +"tx_ack" message. +* Added "Listen-Before-Talk" JSON configuration. +* Splitted reset_pkt_fwd.sh script in 2 different scripts: + - reset_lgw.sh, provided with the HAL (lora_gateway) + - update_gwid.sh, provided with lora_pkt_fwd + +WARNING: Gateway <-> Network Server protocol version has changed. Please refer + to PROTOCOL.txt file. + +### v2.2.1 - 2016-04-12 ### + +* util_tx_test: added FSK support and specific payload for easier PER testing. +* base64: fixed padding check. +* Updated all makefiles to handle the creation of obj directory when necessary. +* [gps/beacon]_pkt_fwd: fixed crash on exit when GPS not enabled. +* [*]_pkt_fwd: added a cfg/ directory containing different flavours or the +global_conf.json file for different boards: Ref Design PCB_E336 (GW1.5-27dBm), +Ref Design PCB_E286 (GW1.0), Ref Design with US902 frequency plan. + +### v2.2.0 - 2015-10-08 ### + +* Removed FTDI support in makefiles to align with HAL v3.2.0. +* Force IPv4 mode usage on UDP socket, instead of auto. The auto mode was +causing an issue to properly resolve LoRa server hostname given in JSON +configuration file (MariaDB issue: https://mariadb.atlassian.net/browse/MDEV-4356, +https://mariadb.atlassian.net/browse/MDEV-4379). + +### v2.1.0 - 2015-06-29 ### + +* Added helper script for concentrator reset through GPIO, needed on IoT +Starter Kit (reset_pkt_fwd.sh). +* The same reset_pkt_fwd.sh script also allows to automatically update the +Gateway_ID field in JSON configuration file, with board MAC address. +* Updated JSON configuration file with proper default value for IoT Starter +Kit: server address set to local server, GPS device path set to proper value +(/dev/ttyAMA0). + +### v2.0.0 - 2015-04-30 ### + +* Changed: Several configuration parameters are now set dynamically from the +JSON configuration file: RSSI offset, concentrator clock source, radio type, +TX gain table, network type. The HAL does not need to be recompiled any more to +update those parameters. An example for IoT Starter Kit platform is provided in +global_conf.json for basic, gps and beacon packet_forwarder. +* Removed: Band frequency JSON configuration file has been removed. An example +for EU 868MHz is provided in global_conf.json for basic, gps and beacon packet +forwarder. +* Changed: Updated makefiles to allow cross compilation from environment +variable (ARCH, CROSS_COMPILE). + +** WARNING: ** +** Update your JSON configuration file with new dynamic parameters. ** + +### v1.4.1 - 2015-01-23 ### + +* Bugfix: fixed LP-116, fdev parameter parsed incorrectly, making FSK TX fail. +* Bugfix: fixed a platform-dependant minor rounding issue. +* Beta: updated beacon format, partially aligned with latest class B proposal. + +### v1.4.0 - 2014-10-16 ### + +* Feature: Adding TX FSK support. +* Feature: optional auto-quit if a certain number of PULL_ACK is missed. +* Feature: upstream and downstream ping time is displayed on console. +* Bugfix: some beacons were missed at high beaconing frequency. +* Bugfix: critical snprintf error caused a crash for long payloads. +* FSK bitrate now appears in the upstream JSON. + +### v1.3.0 - 2014-03-28 ### + +* Feature: adding preliminary beacon support for class B development. +* Solved warnings with 64b integer printf when compiling on x86_64. +* Updated build system for easier deployment on various hardware. +* Changed threads organization in the forwarder programs. +* Removed duplicate protocol documentation. + +### v1.2.0 - 2014-02-03 ### + +* Feature: added a GPS-enabled packet forwarder, used to timestamp received +packet with a globally-synchronous microsecond-accurate timestamp. +* Feature: GPS packet forwarder sends status report on the uplink, protocol +specification updated accordingly (report include gateway geolocation). +* Feature: packets can be sent without CRC at radio layer. +* Bugfix: no more crash with base64 padded input. +* Bugfix: no more rounding errors on the 'freq' value sent to server. +* A minimum preamble of 6 Lora symbol is enforced for optimum sensitivity. +* Padded Base64 is sent on uplink, downlink accepts padded and unpadded Base64. +* Updated the Parson JSON library to a version that supports comments. +* Added .md (Markdown) extension to readme files for better Github viewing. + +### v1.1.0 - 2013-12-09 ### + +* Feature: added packet filtering parameters to the JSON configuration files. +* Bugfix: will not send a datagram if all the packets returned by the receive() +function have been filtered out. +* Bugfix: removed leading zeros for the timestamp in the upstream JSON because +it is not compliant with JSON standard (might be interpreted as octal number). +* Removed TXT extension for README files for better Github integration. +* Cleaned-up documentation, moving change log to top README. +* Modified Makefiles to ease cross-compilation. + +### v1.0.0 - 2013-11-22 ### + +* Initial release of the packet forwarder, protocol specifications and helper +programs. + +6. Legal notice +---------------- + +The information presented in this project documentation does not form part of +any quotation or contract, is believed to be accurate and reliable and may be +changed without notice. No liability will be accepted by the publisher for any +consequence of its use. Publication thereof does not convey nor imply any +license under patent or other industrial or intellectual property rights. +Semtech assumes no responsibility or liability whatsoever for any failure or +unexpected operation resulting from misuse, neglect improper installation, +repair or improper handling or unusual physical or electrical stress +including, but not limited to, exposure to parameters beyond the specified +maximum ratings or operation outside the specified range. + +SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE +SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER +CRITICAL APPLICATIONS. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS +UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMERS OWN RISK. Should a +customer purchase or use Semtech products for any such unauthorized +application, the customer shall indemnify and hold Semtech and its officers, +employees, subsidiaries, affiliates, and distributors harmless against all +claims, costs damages and attorney fees which could arise. + +*EOF* diff --git a/util_ack/Makefile b/util_ack/Makefile new file mode 100644 index 0000000..4990099 --- /dev/null +++ b/util_ack/Makefile @@ -0,0 +1,33 @@ +### Application-specific constants + +APP_NAME := util_ack + +### Constant symbols + +CC := $(CROSS_COMPILE)gcc +AR := $(CROSS_COMPILE)ar + +CFLAGS := -O2 -Wall -Wextra -std=c99 -Iinc -I. + +OBJDIR = obj + +### General build targets + +all: $(APP_NAME) + +clean: + rm -f $(OBJDIR)/*.o + rm -f $(APP_NAME) + +### Main program compilation and assembly + +$(OBJDIR): + mkdir -p $(OBJDIR) + +$(OBJDIR)/%.o: src/%.c | $(OBJDIR) + $(CC) -c $(CFLAGS) $< -o $@ + +$(APP_NAME): $(OBJDIR)/$(APP_NAME).o + $(CC) $< -o $@ + +### EOF
\ No newline at end of file diff --git a/util_ack/readme.md b/util_ack/readme.md new file mode 100644 index 0000000..9de6a40 --- /dev/null +++ b/util_ack/readme.md @@ -0,0 +1,65 @@ + / _____) _ | | + ( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | + (______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Utility: packet acknowledger +============================= + +1. Introduction +---------------- + +The packet acknowledger is a simple helper program listening on a single UDP +port and responding to PUSH_DATA datagrams with PUSH_ACK, and to PULL_DATA +datagrams with PULL_ACK. + +Informations about the datagrams received and the answers send are display on +screen to help communication debugging. + +Packets not following the protocol detailed in the PROTOCOL.TXT document in the +basic_pkt_fwt directory are ignored. + +2. Dependencies +---------------- + +This program follows the v1.1 version of the gateway-to-server protocol. + +3. Usage +--------- + +Start the program with the port number as first and only argument. + +To stop the application, press Ctrl+C. + +4. License +----------- + +Copyright (C) 2013, SEMTECH S.A. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +* Neither the name of the Semtech corporation nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL SEMTECH S.A. BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*EOF*
\ No newline at end of file diff --git a/util_ack/src/util_ack.c b/util_ack/src/util_ack.c new file mode 100644 index 0000000..7acd32e --- /dev/null +++ b/util_ack/src/util_ack.c @@ -0,0 +1,193 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Network sink, receives UDP packets and sends an acknowledge + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +/* fix an issue between POSIX and C99 */ +#if __STDC_VERSION__ >= 199901L + #define _XOPEN_SOURCE 600 +#else + #define _XOPEN_SOURCE 500 +#endif + +#include <stdint.h> /* C99 types */ +#include <stdio.h> /* printf, fprintf, sprintf, fopen, fputs */ +#include <unistd.h> /* usleep */ + +#include <string.h> /* memset */ +#include <time.h> /* time, clock_gettime, strftime, gmtime, clock_nanosleep*/ +#include <stdlib.h> /* atoi, exit */ +#include <errno.h> /* error messages */ + +#include <sys/socket.h> /* socket specific definitions */ +#include <netinet/in.h> /* INET constants and stuff */ +#include <arpa/inet.h> /* IP address conversion stuff */ +#include <netdb.h> /* gai_strerror */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define STRINGIFY(x) #x +#define STR(x) STRINGIFY(x) +#define MSG(args...) fprintf(stderr, args) /* message that is destined to the user */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ + +#define PROTOCOL_VERSION 2 + +#define PKT_PUSH_DATA 0 +#define PKT_PUSH_ACK 1 +#define PKT_PULL_DATA 2 +#define PKT_PULL_RESP 3 +#define PKT_PULL_ACK 4 + +/* -------------------------------------------------------------------------- */ +/* --- MAIN FUNCTION -------------------------------------------------------- */ + +int main(int argc, char **argv) +{ + int i; /* loop variable and temporary variable for return value */ + + /* server socket creation */ + int sock; /* socket file descriptor */ + struct addrinfo hints; + struct addrinfo *result; /* store result of getaddrinfo */ + struct addrinfo *q; /* pointer to move into *result data */ + char host_name[64]; + char port_name[64]; + + /* variables for receiving and sending packets */ + struct sockaddr_storage dist_addr; + socklen_t addr_len = sizeof dist_addr; + uint8_t databuf[4096]; + int byte_nb; + + /* variables for protocol management */ + uint32_t raw_mac_h; /* Most Significant Nibble, network order */ + uint32_t raw_mac_l; /* Least Significant Nibble, network order */ + uint64_t gw_mac; /* MAC address of the client (gateway) */ + uint8_t ack_command; + + /* check if port number was passed as parameter */ + if (argc != 2) { + MSG("Usage: util_ack <port number>\n"); + exit(EXIT_FAILURE); + } + + /* prepare hints to open network sockets */ + memset(&hints, 0, sizeof hints); + hints.ai_family = AF_UNSPEC; /* should handle IP v4 or v6 automatically */ + hints.ai_socktype = SOCK_DGRAM; + hints.ai_flags = AI_PASSIVE; /* will assign local IP automatically */ + + /* look for address */ + i = getaddrinfo(NULL, argv[1], &hints, &result); + if (i != 0) { + MSG("ERROR: getaddrinfo returned %s\n", gai_strerror(i)); + exit(EXIT_FAILURE); + } + + /* try to open socket and bind it */ + for (q=result; q!=NULL; q=q->ai_next) { + sock = socket(q->ai_family, q->ai_socktype,q->ai_protocol); + if (sock == -1) { + continue; /* socket failed, try next field */ + } else { + i = bind(sock, q->ai_addr, q->ai_addrlen); + if (i == -1) { + shutdown(sock, SHUT_RDWR); + continue; /* bind failed, try next field */ + } else { + break; /* success, get out of loop */ + } + } + } + if (q == NULL) { + MSG("ERROR: failed to open socket or to bind to it\n"); + i = 1; + for (q=result; q!=NULL; q=q->ai_next) { + getnameinfo(q->ai_addr, q->ai_addrlen, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + MSG("INFO: result %i host:%s service:%s\n", i, host_name, port_name); + ++i; + } + exit(EXIT_FAILURE); + } + MSG("INFO: util_ack listening on port %s\n", argv[1]); + freeaddrinfo(result); + + while (1) { + /* wait to receive a packet */ + byte_nb = recvfrom(sock, databuf, sizeof databuf, 0, (struct sockaddr *)&dist_addr, &addr_len); + if (byte_nb == -1) { + MSG("ERROR: recvfrom returned %s \n", strerror(errno)); + exit(EXIT_FAILURE); + } + + /* display info about the sender */ + i = getnameinfo((struct sockaddr *)&dist_addr, addr_len, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + if (i == -1) { + MSG("ERROR: getnameinfo returned %s \n", gai_strerror(i)); + exit(EXIT_FAILURE); + } + printf(" -> pkt in , host %s (port %s), %i bytes", host_name, port_name, byte_nb); + + /* check and parse the payload */ + if (byte_nb < 12) { /* not enough bytes for packet from gateway */ + printf(" (too short for GW <-> MAC protocol)\n"); + continue; + } + /* don't touch the token in position 1-2, it will be sent back "as is" for acknowledgement */ + if (databuf[0] != PROTOCOL_VERSION) { /* check protocol version number */ + printf(", invalid version %u\n", databuf[0]); + continue; + } + raw_mac_h = *((uint32_t *)(databuf+4)); + raw_mac_l = *((uint32_t *)(databuf+8)); + gw_mac = ((uint64_t)ntohl(raw_mac_h) << 32) + (uint64_t)ntohl(raw_mac_l); + + /* interpret gateway command */ + switch (databuf[3]) { + case PKT_PUSH_DATA: + printf(", PUSH_DATA from gateway 0x%08X%08X\n", (uint32_t)(gw_mac >> 32), (uint32_t)(gw_mac & 0xFFFFFFFF)); + ack_command = PKT_PUSH_ACK; + printf("<- pkt out, PUSH_ACK for host %s (port %s)", host_name, port_name); + break; + case PKT_PULL_DATA: + printf(", PULL_DATA from gateway 0x%08X%08X\n", (uint32_t)(gw_mac >> 32), (uint32_t)(gw_mac & 0xFFFFFFFF)); + ack_command = PKT_PULL_ACK; + printf("<- pkt out, PULL_ACK for host %s (port %s)", host_name, port_name); + break; + default: + printf(", unexpected command %u\n", databuf[3]); + continue; + } + + /* add some artificial latency */ + usleep(30000); /* 30 ms */ + + /* send acknowledge and check return value */ + databuf[3] = ack_command; + byte_nb = sendto(sock, (void *)databuf, 4, 0, (struct sockaddr *)&dist_addr, addr_len); + if (byte_nb == -1) { + printf(", send error:%s\n", strerror(errno)); + } else { + printf(", %i bytes sent\n", byte_nb); + } + } +} diff --git a/util_sink/Makefile b/util_sink/Makefile new file mode 100644 index 0000000..cc6a751 --- /dev/null +++ b/util_sink/Makefile @@ -0,0 +1,33 @@ +### Application-specific constants + +APP_NAME := util_sink + +### Constant symbols + +CC := $(CROSS_COMPILE)gcc +AR := $(CROSS_COMPILE)ar + +CFLAGS := -O2 -Wall -Wextra -std=c99 -Iinc -I. + +OBJDIR = obj + +### General build targets + +all: $(APP_NAME) + +clean: + rm -f $(OBJDIR)/*.o + rm -f $(APP_NAME) + +### Main program compilation and assembly + +$(OBJDIR): + mkdir -p $(OBJDIR) + +$(OBJDIR)/%.o: src/%.c | $(OBJDIR) + $(CC) -c $(CFLAGS) $< -o $@ + +$(APP_NAME): $(OBJDIR)/$(APP_NAME).o + $(CC) $< -o $@ + +### EOF diff --git a/util_sink/readme.md b/util_sink/readme.md new file mode 100644 index 0000000..9bf8992 --- /dev/null +++ b/util_sink/readme.md @@ -0,0 +1,62 @@ + / _____) _ | | + ( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | + (______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Utility: packet sink +===================== + +1. Introduction +---------------- + +The packet sink is a simple helper program listening on a single port for UDP +datagrams, and displaying a message each time one is received. The content of +the datagram itself is ignored. + +This allow to test another software (locally or on another computer) that +sends UDP datagrams without having ICMP 'port closed' errors each time. + +2. Dependencies +---------------- + +None. + +3. Usage +--------- + +Start the program with the port number as first and only argument. + +To stop the application, press Ctrl+C. + +4. License +----------- + +Copyright (C) 2013, SEMTECH S.A. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +* Neither the name of the Semtech corporation nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL SEMTECH S.A. BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*EOF*
\ No newline at end of file diff --git a/util_sink/src/util_sink.c b/util_sink/src/util_sink.c new file mode 100644 index 0000000..3c09c9b --- /dev/null +++ b/util_sink/src/util_sink.c @@ -0,0 +1,125 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Network sink, receives UDP packets on certain ports and discards them + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +/* fix an issue between POSIX and C99 */ +#if __STDC_VERSION__ >= 199901L + #define _XOPEN_SOURCE 600 +#else + #define _XOPEN_SOURCE 500 +#endif + +#include <stdint.h> /* C99 types */ +#include <stdio.h> /* printf, fprintf, sprintf, fopen, fputs */ + +#include <string.h> /* memset */ +#include <time.h> /* time, clock_gettime, strftime, gmtime, clock_nanosleep*/ +#include <stdlib.h> /* atoi, exit */ +#include <errno.h> /* error messages */ + +#include <sys/socket.h> /* socket specific definitions */ +#include <netinet/in.h> /* INET constants and stuff */ +#include <arpa/inet.h> /* IP address conversion stuff */ +#include <netdb.h> /* gai_strerror */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define STRINGIFY(x) #x +#define STR(x) STRINGIFY(x) +#define MSG(args...) fprintf(stderr, args) /* message that is destined to the user */ + +/* -------------------------------------------------------------------------- */ +/* --- MAIN FUNCTION -------------------------------------------------------- */ + +int main(int argc, char **argv) +{ + int i; /* loop variable and temporary variable for return value */ + + /* server socket creation */ + int sock; /* socket file descriptor */ + struct addrinfo hints; + struct addrinfo *result; /* store result of getaddrinfo */ + struct addrinfo *q; /* pointer to move into *result data */ + char host_name[64]; + char port_name[64]; + + /* variables for receiving packets */ + struct sockaddr_storage dist_addr; + socklen_t addr_len = sizeof dist_addr; + uint8_t databuf[4096]; + int byte_nb; + + /* check if port number was passed as parameter */ + if (argc != 2) { + MSG("Usage: util_sink <port number>\n"); + exit(EXIT_FAILURE); + } + + /* prepare hints to open network sockets */ + memset(&hints, 0, sizeof hints); + hints.ai_family = AF_UNSPEC; /* should handle IP v4 or v6 automatically */ + hints.ai_socktype = SOCK_DGRAM; + hints.ai_flags = AI_PASSIVE; /* will assign local IP automatically */ + + /* look for address */ + i = getaddrinfo(NULL, argv[1], &hints, &result); + if (i != 0) { + MSG("ERROR: getaddrinfo returned %s\n", gai_strerror(i)); + exit(EXIT_FAILURE); + } + + /* try to open socket and bind it */ + for (q=result; q!=NULL; q=q->ai_next) { + sock = socket(q->ai_family, q->ai_socktype,q->ai_protocol); + if (sock == -1) { + continue; /* socket failed, try next field */ + } else { + i = bind(sock, q->ai_addr, q->ai_addrlen); + if (i == -1) { + shutdown(sock, SHUT_RDWR); + continue; /* bind failed, try next field */ + } else { + break; /* success, get out of loop */ + } + } + } + if (q == NULL) { + MSG("ERROR: failed to open socket or to bind to it\n"); + i = 1; + for (q=result; q!=NULL; q=q->ai_next) { + getnameinfo(q->ai_addr, q->ai_addrlen, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + MSG("result %i host:%s service:%s\n", i, host_name, port_name); + ++i; + } + exit(EXIT_FAILURE); + } + MSG("INFO: util_sink listening on port %s\n", argv[1]); + freeaddrinfo(result); + + while (1) { + byte_nb = recvfrom(sock, databuf, sizeof databuf, 0, (struct sockaddr *)&dist_addr, &addr_len); + if (byte_nb == -1) { + MSG("ERROR: recvfrom returned %s \n", strerror(errno)); + exit(EXIT_FAILURE); + } + getnameinfo((struct sockaddr *)&dist_addr, addr_len, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + printf("Got packet from host %s port %s, %i bytes long\n", host_name, port_name, byte_nb); + } +} diff --git a/util_tx_test/Makefile b/util_tx_test/Makefile new file mode 100644 index 0000000..880b10d --- /dev/null +++ b/util_tx_test/Makefile @@ -0,0 +1,36 @@ +### Application-specific constants + +APP_NAME := util_tx_test + +### Constant symbols + +CC := $(CROSS_COMPILE)gcc +AR := $(CROSS_COMPILE)ar + +CFLAGS := -O2 -Wall -Wextra -std=c99 -Iinc -I. + +OBJDIR = obj +INCLUDES = $(wildcard inc/*.h) + +### General build targets + +all: $(APP_NAME) + +clean: + rm -f $(OBJDIR)/*.o + rm -f $(APP_NAME) + +### Sub-modules compilation + +$(OBJDIR): + mkdir -p $(OBJDIR) + +$(OBJDIR)/%.o: src/%.c $(INCLUDES) | $(OBJDIR) + $(CC) -c $(CFLAGS) $< -o $@ + +### Main program assembly + +$(APP_NAME): $(OBJDIR)/$(APP_NAME).o $(OBJDIR)/base64.o + $(CC) $< $(OBJDIR)/base64.o -o $@ + +### EOF diff --git a/util_tx_test/inc/base64.h b/util_tx_test/inc/base64.h new file mode 100644 index 0000000..e57eb47 --- /dev/null +++ b/util_tx_test/inc/base64.h @@ -0,0 +1,62 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Base64 encoding & decoding library + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +#ifndef _BASE64_H +#define _BASE64_H + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <stdint.h> /* C99 types */ + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS PROTOTYPES ------------------------------------------ */ + +/** +@brief Encode binary data in Base64 string (no padding) +@param in pointer to a table of binary data +@param size number of bytes to be encoded to base64 +@param out pointer to a string where the function will output encoded data +@param max_len max length of the out string (including null char) +@return >=0 length of the resulting string (w/o null char), -1 for error +*/ +int bin_to_b64_nopad(const uint8_t * in, int size, char * out, int max_len); + +/** +@brief Decode Base64 string to binary data (no padding) +@param in string containing only base64 valid characters +@param size number of characters to be decoded from base64 (w/o null char) +@param out pointer to a data buffer where the function will output decoded data +@param out_max_len usable size of the output data buffer +@return >=0 number of bytes written to the data buffer, -1 for error +*/ +int b64_to_bin_nopad(const char * in, int size, uint8_t * out, int max_len); + +/* === derivative functions === */ + +/** +@brief Encode binary data in Base64 string (with added padding) +*/ +int bin_to_b64(const uint8_t * in, int size, char * out, int max_len); + +/** +@brief Decode Base64 string to binary data (remove padding if necessary) +*/ +int b64_to_bin(const char * in, int size, uint8_t * out, int max_len); + +#endif + +/* --- EOF ------------------------------------------------------------------ */ diff --git a/util_tx_test/readme.md b/util_tx_test/readme.md new file mode 100644 index 0000000..f307292 --- /dev/null +++ b/util_tx_test/readme.md @@ -0,0 +1,77 @@ + / _____) _ | | + ( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | + (______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Utility: network packet sender +=============================== + +1. Introduction +---------------- + +The network packet sender is a simple helper program used to send packets +through the gateway-to-server downlink route. + +The program start by waiting for a gateway to send it a PULL_DATA datagram. +After that, it will send back to the gateway a specified amount of PULL_RESP +datagrams, each containing a packet to be sent immediately and a variable +payload. + +2. Dependencies +---------------- + +This program follows the v1.1 version of the gateway-to-server protocol. + +3. Usage +--------- + +The application runs until the specified number of packets have been sent. +Press Ctrl+C to stop the application before that. + +Use the -h option to get help and details about available options. + +The packets are [9-n] bytes long, and have following payload content: +``` ++----------+---------------+---------------+---------------+---------------+---+---+---+---+---+---+---+---+ +| Id | PktCnt[31:24] | PktCnt[23:16] | PktCnt[15:8] | PktCnt[7:0] | P | E | R |FCS| 0 | 1 |...| n | ++----------+---------------+---------------+---------------+---------------+---+---+---+---+---+---+---+---+ + +Id : User defined ID to differentiate sender at receiver side. (8 bits) +PktCnt : Packet counter incremented at each transmission. (32 bits) +‘P’, ‘E’, ‘R’ : ASCII values for characters 'P', 'E' and 'R'. +FCS : Checksum: 8-bits sum of Id, PktCnt[31 :24] , PktCnt[23 :16] , PktCnt[15 :8] , PktCnt[7:0], ‘P’,’E’,’R’ +0,1, ..., n : Padding bytes up until user specified payload length. +``` + +4. License +----------- + +Copyright (C) 2013, SEMTECH S.A. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +* Neither the name of the Semtech corporation nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL SEMTECH S.A. BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*EOF* diff --git a/util_tx_test/src/base64.c b/util_tx_test/src/base64.c new file mode 100644 index 0000000..8ba908e --- /dev/null +++ b/util_tx_test/src/base64.c @@ -0,0 +1,308 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Base64 encoding & decoding library + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> + +#include "base64.h" + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define CRIT(a) fprintf(stderr, "\nCRITICAL file:%s line:%u msg:%s\n", __FILE__, __LINE__,a);exit(EXIT_FAILURE) + +//#define DEBUG(args...) fprintf(stderr,"debug: " args) /* diagnostic message that is destined to the user */ +#define DEBUG(args...) + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MODULE-WIDE VARIABLES ---------------------------------------- */ + +static char code_62 = '+'; /* RFC 1421 standard character for code 62 */ +static char code_63 = '/'; /* RFC 1421 standard character for code 63 */ +static char code_pad = '='; /* RFC 1421 padding character if padding */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DECLARATION ---------------------------------------- */ + +/** +@brief Convert a code in the range 0-63 to an ASCII character +*/ +char code_to_char(uint8_t x); + +/** +@brief Convert an ASCII character to a code in the range 0-63 +*/ +uint8_t char_to_code(char x); + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DEFINITION ----------------------------------------- */ + +char code_to_char(uint8_t x) { + if (x <= 25) { + return 'A' + x; + } else if ((x >= 26) && (x <= 51)) { + return 'a' + (x-26); + } else if ((x >= 52) && (x <= 61)) { + return '0' + (x-52); + } else if (x == 62) { + return code_62; + } else if (x == 63) { + return code_63; + } else { + DEBUG("ERROR: %i IS OUT OF RANGE 0-63 FOR BASE64 ENCODING\n", x); + exit(EXIT_FAILURE); + } //TODO: improve error management +} + +uint8_t char_to_code(char x) { + if ((x >= 'A') && (x <= 'Z')) { + return (uint8_t)x - (uint8_t)'A'; + } else if ((x >= 'a') && (x <= 'z')) { + return (uint8_t)x - (uint8_t)'a' + 26; + } else if ((x >= '0') && (x <= '9')) { + return (uint8_t)x - (uint8_t)'0' + 52; + } else if (x == code_62) { + return 62; + } else if (x == code_63) { + return 63; + } else { + DEBUG("ERROR: %c (0x%x) IS INVALID CHARACTER FOR BASE64 DECODING\n", x, x); + exit(EXIT_FAILURE); + } //TODO: improve error management +} + +/* -------------------------------------------------------------------------- */ +/* --- PUBLIC FUNCTIONS DEFINITION ------------------------------------------ */ + +int bin_to_b64_nopad(const uint8_t * in, int size, char * out, int max_len) { + int i; + int result_len; /* size of the result */ + int full_blocks; /* number of 3 unsigned chars / 4 characters blocks */ + int last_bytes; /* number of unsigned chars <3 in the last block */ + int last_chars; /* number of characters <4 in the last block */ + uint32_t b; + + /* check input values */ + if ((out == NULL) || (in == NULL)) { + DEBUG("ERROR: NULL POINTER AS OUTPUT IN BIN_TO_B64\n"); + return -1; + } + if (size == 0) { + *out = 0; /* null string */ + return 0; + } + + /* calculate the number of base64 'blocks' */ + full_blocks = size / 3; + last_bytes = size % 3; + switch (last_bytes) { + case 0: /* no byte left to encode */ + last_chars = 0; + break; + case 1: /* 1 byte left to encode -> +2 chars */ + last_chars = 2; + break; + case 2: /* 2 bytes left to encode -> +3 chars */ + last_chars = 3; + break; + default: + CRIT("switch default that should not be possible"); + } + + /* check if output buffer is big enough */ + result_len = (4*full_blocks) + last_chars; + if (max_len < (result_len + 1)) { /* 1 char added for string terminator */ + DEBUG("ERROR: OUTPUT BUFFER TOO SMALL IN BIN_TO_B64\n"); + return -1; + } + + /* process all the full blocks */ + for (i=0; i < full_blocks; ++i) { + b = (0xFF & in[3*i] ) << 16; + b |= (0xFF & in[3*i + 1]) << 8; + b |= 0xFF & in[3*i + 2]; + out[4*i + 0] = code_to_char((b >> 18) & 0x3F); + out[4*i + 1] = code_to_char((b >> 12) & 0x3F); + out[4*i + 2] = code_to_char((b >> 6 ) & 0x3F); + out[4*i + 3] = code_to_char( b & 0x3F); + } + + /* process the last 'partial' block and terminate string */ + i = full_blocks; + if (last_chars == 0) { + out[4*i] = 0; /* null character to terminate string */ + } else if (last_chars == 2) { + b = (0xFF & in[3*i] ) << 16; + out[4*i + 0] = code_to_char((b >> 18) & 0x3F); + out[4*i + 1] = code_to_char((b >> 12) & 0x3F); + out[4*i + 2] = 0; /* null character to terminate string */ + } else if (last_chars == 3) { + b = (0xFF & in[3*i] ) << 16; + b |= (0xFF & in[3*i + 1]) << 8; + out[4*i + 0] = code_to_char((b >> 18) & 0x3F); + out[4*i + 1] = code_to_char((b >> 12) & 0x3F); + out[4*i + 2] = code_to_char((b >> 6 ) & 0x3F); + out[4*i + 3] = 0; /* null character to terminate string */ + } + + return result_len; +} + +int b64_to_bin_nopad(const char * in, int size, uint8_t * out, int max_len) { + int i; + int result_len; /* size of the result */ + int full_blocks; /* number of 3 unsigned chars / 4 characters blocks */ + int last_chars; /* number of characters <4 in the last block */ + int last_bytes; /* number of unsigned chars <3 in the last block */ + uint32_t b; + ; + + /* check input values */ + if ((out == NULL) || (in == NULL)) { + DEBUG("ERROR: NULL POINTER AS OUTPUT OR INPUT IN B64_TO_BIN\n"); + return -1; + } + if (size == 0) { + return 0; + } + + /* calculate the number of base64 'blocks' */ + full_blocks = size / 4; + last_chars = size % 4; + switch (last_chars) { + case 0: /* no char left to decode */ + last_bytes = 0; + break; + case 1: /* only 1 char left is an error */ + DEBUG("ERROR: ONLY ONE CHAR LEFT IN B64_TO_BIN\n"); + return -1; + case 2: /* 2 chars left to decode -> +1 byte */ + last_bytes = 1; + break; + case 3: /* 3 chars left to decode -> +2 bytes */ + last_bytes = 2; + break; + default: + CRIT("switch default that should not be possible"); + } + + /* check if output buffer is big enough */ + result_len = (3*full_blocks) + last_bytes; + if (max_len < result_len) { + DEBUG("ERROR: OUTPUT BUFFER TOO SMALL IN B64_TO_BIN\n"); + return -1; + } + + /* process all the full blocks */ + for (i=0; i < full_blocks; ++i) { + b = (0x3F & char_to_code(in[4*i] )) << 18; + b |= (0x3F & char_to_code(in[4*i + 1])) << 12; + b |= (0x3F & char_to_code(in[4*i + 2])) << 6; + b |= 0x3F & char_to_code(in[4*i + 3]); + out[3*i + 0] = (b >> 16) & 0xFF; + out[3*i + 1] = (b >> 8 ) & 0xFF; + out[3*i + 2] = b & 0xFF; + } + + /* process the last 'partial' block */ + i = full_blocks; + if (last_bytes == 1) { + b = (0x3F & char_to_code(in[4*i] )) << 18; + b |= (0x3F & char_to_code(in[4*i + 1])) << 12; + out[3*i + 0] = (b >> 16) & 0xFF; + if (((b >> 12) & 0x0F) != 0) { + DEBUG("WARNING: last character contains unusable bits\n"); + } + } else if (last_bytes == 2) { + b = (0x3F & char_to_code(in[4*i] )) << 18; + b |= (0x3F & char_to_code(in[4*i + 1])) << 12; + b |= (0x3F & char_to_code(in[4*i + 2])) << 6; + out[3*i + 0] = (b >> 16) & 0xFF; + out[3*i + 1] = (b >> 8 ) & 0xFF; + if (((b >> 6) & 0x03) != 0) { + DEBUG("WARNING: last character contains unusable bits\n"); + } + } + + return result_len; +} + +int bin_to_b64(const uint8_t * in, int size, char * out, int max_len) { + int ret; + + ret = bin_to_b64_nopad(in, size, out, max_len); + + if (ret == -1) { + return -1; + } + switch (ret%4) { + case 0: /* nothing to do */ + return ret; + case 1: + DEBUG("ERROR: INVALID UNPADDED BASE64 STRING\n"); + return -1; + case 2: /* 2 chars in last block, must add 2 padding char */ + if (max_len >= (ret + 2 + 1)) { + out[ret] = code_pad; + out[ret+1] = code_pad; + out[ret+2] = 0; + return ret+2; + } else { + DEBUG("ERROR: not enough room to add padding in bin_to_b64\n"); + return -1; + } + case 3: /* 3 chars in last block, must add 1 padding char */ + if (max_len >= (ret + 1 + 1)) { + out[ret] = code_pad; + out[ret+1] = 0; + return ret+1; + } else { + DEBUG("ERROR: not enough room to add padding in bin_to_b64\n"); + return -1; + } + default: + CRIT("switch default that should not be possible"); + } +} + +int b64_to_bin(const char * in, int size, uint8_t * out, int max_len) { + if (in == NULL) { + DEBUG("ERROR: NULL POINTER AS OUTPUT OR INPUT IN B64_TO_BIN\n"); + return -1; + } + if ((size%4 == 0) && (size >= 4)) { /* potentially padded Base64 */ + if (in[size-2] == code_pad) { /* 2 padding char to ignore */ + return b64_to_bin_nopad(in, size-2, out, max_len); + } else if (in[size-1] == code_pad) { /* 1 padding char to ignore */ + return b64_to_bin_nopad(in, size-1, out, max_len); + } else { /* no padding to ignore */ + return b64_to_bin_nopad(in, size, out, max_len); + } + } else { /* treat as unpadded Base64 */ + return b64_to_bin_nopad(in, size, out, max_len); + } +} + + +/* --- EOF ------------------------------------------------------------------ */ diff --git a/util_tx_test/src/util_tx_test.c b/util_tx_test/src/util_tx_test.c new file mode 100644 index 0000000..00b0c03 --- /dev/null +++ b/util_tx_test/src/util_tx_test.c @@ -0,0 +1,502 @@ +/* + / _____) _ | | +( (____ _____ ____ _| |_ _____ ____| |__ + \____ \| ___ | (_ _) ___ |/ ___) _ \ + _____) ) ____| | | || |_| ____( (___| | | | +(______/|_____)_|_|_| \__)_____)\____)_| |_| + (C)2013 Semtech-Cycleo + +Description: + Ask a gateway to emit packets using GW <-> server protocol + +License: Revised BSD License, see LICENSE.TXT file include in the project +Maintainer: Sylvain Miermont +*/ + + +/* -------------------------------------------------------------------------- */ +/* --- DEPENDANCIES --------------------------------------------------------- */ + +/* fix an issue between POSIX and C99 */ +#if __STDC_VERSION__ >= 199901L + #define _XOPEN_SOURCE 600 +#else + #define _XOPEN_SOURCE 500 +#endif + +#include <stdint.h> /* C99 types */ +#include <stdbool.h> /* bool type */ +#include <stdio.h> /* printf fprintf sprintf fopen fputs */ +#include <unistd.h> /* getopt access usleep */ + +#include <string.h> /* memset */ +#include <signal.h> /* sigaction */ +#include <stdlib.h> /* exit codes */ +#include <errno.h> /* error messages */ + +#include <sys/socket.h> /* socket specific definitions */ +#include <netinet/in.h> /* INET constants and stuff */ +#include <arpa/inet.h> /* IP address conversion stuff */ +#include <netdb.h> /* gai_strerror */ + +#include "base64.h" + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE MACROS ------------------------------------------------------- */ + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define MSG(args...) fprintf(stderr, args) /* message that is destined to the user */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE CONSTANTS ---------------------------------------------------- */ + +#define PROTOCOL_VERSION 2 + +#define PKT_PUSH_DATA 0 +#define PKT_PUSH_ACK 1 +#define PKT_PULL_DATA 2 +#define PKT_PULL_RESP 3 +#define PKT_PULL_ACK 4 + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE VARIABLES (GLOBAL) ------------------------------------------- */ + +/* signal handling variables */ +struct sigaction sigact; /* SIGQUIT&SIGINT&SIGTERM signal handling */ +static int exit_sig = 0; /* 1 -> application terminates cleanly (shut down hardware, close open files, etc) */ +static int quit_sig = 0; /* 1 -> application terminates without shutting down the hardware */ + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DECLARATION ---------------------------------------- */ + +static void sig_handler(int sigio); + +void usage (void); + +/* -------------------------------------------------------------------------- */ +/* --- PRIVATE FUNCTIONS DEFINITION ----------------------------------------- */ + +static void sig_handler(int sigio) { + if (sigio == SIGQUIT) { + quit_sig = 1;; + } else if ((sigio == SIGINT) || (sigio == SIGTERM)) { + exit_sig = 1; + } +} + +/* describe command line options */ +void usage(void) { + MSG("Usage: util_tx_test {options}\n"); + MSG("Available options:\n"); + MSG(" -h print this help\n"); + MSG(" -n <int or service> port number for gateway link\n"); + MSG(" -f <float> target frequency in MHz\n"); + MSG(" -m <str> Modulation type ['LORA, 'FSK']\n"); + MSG(" -s <int> Spreading Factor [7:12]\n"); + MSG(" -b <int> Modulation bandwidth in kHz [125,250,500]\n"); + MSG(" -d <uint> FSK frequency deviation in kHz [1:250]\n"); + MSG(" -r <float> FSK bitrate in kbps [0.5:250]\n"); + MSG(" -p <int> RF power (dBm)\n"); + MSG(" -z <uint> Payload size in bytes [9:255]\n"); + MSG(" -t <int> pause between packets (ms)\n"); + MSG(" -x <int> numbers of times the sequence is repeated\n"); + MSG(" -v <uint> test ID, inserted in payload for PER test [0:255]\n"); + MSG(" -i send packet using inverted modulation polarity \n"); +} + +/* -------------------------------------------------------------------------- */ +/* --- MAIN FUNCTION -------------------------------------------------------- */ + +int main(int argc, char **argv) +{ + int i, j, x; + unsigned int xu; + char arg_s[64]; + + /* application parameters */ + char mod[64] = "LORA"; /* LoRa modulation by default */ + float f_target = 866.0; /* target frequency */ + int sf = 10; /* SF10 by default */ + int bw = 125; /* 125kHz bandwidth by default */ + int pow = 14; /* 14 dBm by default */ + int delay = 1000; /* 1 second between packets by default */ + int repeat = 1; /* sweep only once by default */ + bool invert = false; + float br_kbps = 50; /* 50 kbps by default */ + uint8_t fdev_khz = 25; /* 25 khz by default */ + + /* packet payload variables */ + int payload_size = 9; /* minimum size for PER frame */ + uint8_t payload_bin[255]; + char payload_b64[341]; + int payload_index; + + /* PER payload variables */ + uint8_t id = 0; + + /* server socket creation */ + int sock; /* socket file descriptor */ + struct addrinfo hints; + struct addrinfo *result; /* store result of getaddrinfo */ + struct addrinfo *q; /* pointer to move into *result data */ + char serv_port[8] = "1680"; + char host_name[64]; + char port_name[64]; + + /* variables for receiving and sending packets */ + struct sockaddr_storage dist_addr; + socklen_t addr_len = sizeof dist_addr; + uint8_t databuf[500]; + int buff_index; + int byte_nb; + + /* variables for gateway identification */ + uint32_t raw_mac_h; /* Most Significant Nibble, network order */ + uint32_t raw_mac_l; /* Least Significant Nibble, network order */ + uint64_t gw_mac; /* MAC address of the client (gateway) */ + + /* prepare hints to open network sockets */ + memset(&hints, 0, sizeof hints); + hints.ai_family = AF_UNSPEC; /* should handle IP v4 or v6 automatically */ + hints.ai_socktype = SOCK_DGRAM; + hints.ai_flags = AI_PASSIVE; /* will assign local IP automatically */ + + /* parse command line options */ + while ((i = getopt (argc, argv, "hn:f:m:s:b:d:r:p:z:t:x:v:i")) != -1) { + switch (i) { + case 'h': + usage(); + return EXIT_FAILURE; + break; + + case 'n': /* -n <int or service> port number for gateway link */ + strncpy(serv_port, optarg, sizeof serv_port); + break; + + case 'f': /* -f <float> target frequency in MHz */ + i = sscanf(optarg, "%f", &f_target); + if ((i != 1) || (f_target < 30.0) || (f_target > 3000.0)) { + MSG("ERROR: invalid TX frequency\n"); + return EXIT_FAILURE; + } + break; + + case 'm': /* -m <str> Modulation type */ + i = sscanf(optarg, "%s", arg_s); + if ((i != 1) || ((strcmp(arg_s, "LORA") != 0) && (strcmp(arg_s, "FSK")))) { + MSG("ERROR: invalid modulation type\n"); + usage(); + return EXIT_FAILURE; + } else { + sprintf(mod, "%s", arg_s); + } + break; + + case 's': /* -s <int> Spreading Factor */ + i = sscanf(optarg, "%i", &sf); + if ((i != 1) || (sf < 7) || (sf > 12)) { + MSG("ERROR: invalid spreading factor\n"); + return EXIT_FAILURE; + } + break; + + case 'b': /* -b <int> Modulation bandwidth in kHz */ + i = sscanf(optarg, "%i", &bw); + if ((i != 1) || ((bw != 125) && (bw != 250) && (bw != 500))) { + MSG("ERROR: invalid LORA bandwidth\n"); + return EXIT_FAILURE; + } + break; + + case 'd': /* -d <uint> FSK frequency deviation */ + i = sscanf(optarg, "%u", &xu); + if ((i != 1) || (xu < 1) || (xu > 250)) { + MSG("ERROR: invalid FSK frequency deviation\n"); + usage(); + return EXIT_FAILURE; + } else { + fdev_khz = (uint8_t)xu; + } + break; + + case 'r': /* -q <float> FSK bitrate */ + i = sscanf(optarg, "%f", &br_kbps); + if ((i != 1) || (br_kbps < 0.5) || (br_kbps > 250)) { + MSG("ERROR: invalid FSK bitrate\n"); + usage(); + return EXIT_FAILURE; + } + break; + + case 'p': /* -p <int> RF power */ + i = sscanf(optarg, "%i", &pow); + if ((i != 1) || (pow < 0) || (pow > 30)) { + MSG("ERROR: invalid RF power\n"); + return EXIT_FAILURE; + } + break; + + case 'z': /* -z <uint> Payload size */ + i = sscanf(optarg, "%i", &payload_size); + if ((i != 1) || (payload_size < 9) || (payload_size > 255)) { + MSG("ERROR: invalid payload size\n"); + usage(); + return EXIT_FAILURE; + } + break; + + case 't': /* -t <int> pause between RF packets (ms) */ + i = sscanf(optarg, "%i", &delay); + if ((i != 1) || (delay < 0)) { + MSG("ERROR: invalid time between RF packets\n"); + return EXIT_FAILURE; + } + break; + + case 'x': /* -x <int> numbers of times the sequence is repeated */ + i = sscanf(optarg, "%u", &repeat); + if ((i != 1) || (repeat < 1)) { + MSG("ERROR: invalid number of repeats\n"); + return EXIT_FAILURE; + } + break; + + case 'v': /* -v <uint> test Id */ + i = sscanf(optarg, "%u", &xu); + if ((i != 1) || ((xu < 1) && (xu > 255))) { + MSG("ERROR: invalid Id\n"); + return EXIT_FAILURE; + } else { + id = (uint8_t)xu; + } + break; + + case 'i': /* -i send packet using inverted modulation polarity */ + invert = true; + break; + + default: + MSG("ERROR: argument parsing failure, use -h option for help\n"); + usage(); + return EXIT_FAILURE; + } + } + + /* compose local address (auto-complete a structure for socket) */ + i = getaddrinfo(NULL, serv_port, &hints, &result); + if (i != 0) { + MSG("ERROR: getaddrinfo returned %s\n", gai_strerror(i)); + exit(EXIT_FAILURE); + } + + /* try to open socket and bind to it */ + for (q=result; q!=NULL; q=q->ai_next) { + sock = socket(q->ai_family, q->ai_socktype,q->ai_protocol); + if (sock == -1) { + continue; /* socket failed, try next field */ + } else { + i = bind(sock, q->ai_addr, q->ai_addrlen); + if (i == -1) { + shutdown(sock, SHUT_RDWR); + continue; /* bind failed, try next field */ + } else { + break; /* success, get out of loop */ + } + } + } + if (q == NULL) { + MSG("ERROR: failed to open socket or to bind to it\n"); + exit(EXIT_FAILURE); + } + freeaddrinfo(result); + + /* configure signal handling */ + sigemptyset(&sigact.sa_mask); + sigact.sa_flags = 0; + sigact.sa_handler = sig_handler; + sigaction(SIGQUIT, &sigact, NULL); + sigaction(SIGINT, &sigact, NULL); + sigaction(SIGTERM, &sigact, NULL); + + /* display setup summary */ + if (strcmp(mod, "FSK") == 0) { + MSG("INFO: %i FSK pkts @%f MHz (FDev %u kHz, Bitrate %.2f kbps, %uB payload) %i dBm, %i ms between each\n", repeat, f_target, fdev_khz, br_kbps, payload_size, pow, delay); + } else { + MSG("INFO: %i LoRa pkts @%f MHz (BW %u kHz, SF%i, %uB payload) %i dBm, %i ms between each\n", repeat, f_target, bw, sf, payload_size, pow, delay); + } + + /* wait to receive a PULL_DATA request packet */ + MSG("INFO: waiting to receive a PULL_DATA request on port %s\n", serv_port); + while (1) { + byte_nb = recvfrom(sock, databuf, sizeof databuf, 0, (struct sockaddr *)&dist_addr, &addr_len); + if ((quit_sig == 1) || (exit_sig == 1)) { + exit(EXIT_SUCCESS); + } else if (byte_nb < 0) { + MSG("WARNING: recvfrom returned an error\n"); + } else if ((byte_nb < 12) || (databuf[0] != PROTOCOL_VERSION) || (databuf[3] != PKT_PULL_DATA)) { + MSG("INFO: packet received, not PULL_DATA request\n"); + } else { + break; /* success! */ + } + } + + /* retrieve gateway MAC from the request */ + raw_mac_h = *((uint32_t *)(databuf+4)); + raw_mac_l = *((uint32_t *)(databuf+8)); + gw_mac = ((uint64_t)ntohl(raw_mac_h) << 32) + (uint64_t)ntohl(raw_mac_l); + + /* display info about the sender */ + i = getnameinfo((struct sockaddr *)&dist_addr, addr_len, host_name, sizeof host_name, port_name, sizeof port_name, NI_NUMERICHOST); + if (i == -1) { + MSG("ERROR: getnameinfo returned %s \n", gai_strerror(i)); + exit(EXIT_FAILURE); + } + MSG("INFO: PULL_DATA request received from gateway 0x%08X%08X (host %s, port %s)\n", (uint32_t)(gw_mac >> 32), (uint32_t)(gw_mac & 0xFFFFFFFF), host_name, port_name); + + /* PKT_PULL_RESP datagrams header */ + databuf[0] = PROTOCOL_VERSION; + databuf[1] = 0; /* no token */ + databuf[2] = 0; /* no token */ + databuf[3] = PKT_PULL_RESP; + buff_index = 4; + + /* start of JSON structure */ + memcpy((void *)(databuf + buff_index), (void *)"{\"txpk\":{\"imme\":true", 20); + buff_index += 20; + + /* TX frequency */ + i = snprintf((char *)(databuf + buff_index), 20, ",\"freq\":%.6f", f_target); + if ((i>=0) && (i < 20)) { + buff_index += i; + } else { + MSG("ERROR: snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* RF channel */ + memcpy((void *)(databuf + buff_index), (void *)",\"rfch\":0", 9); + buff_index += 9; + + /* TX power */ + i = snprintf((char *)(databuf + buff_index), 12, ",\"powe\":%i", pow); + if ((i>=0) && (i < 12)) { + buff_index += i; + } else { + MSG("ERROR: snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* modulation type and parameters */ + if (strcmp(mod, "FSK") == 0) { + i = snprintf((char *)(databuf + buff_index), 50, ",\"modu\":\"FSK\",\"datr\":%u,\"fdev\":%u", (unsigned int)(br_kbps*1e3), (unsigned int)(fdev_khz*1e3)); + if ((i>=0) && (i < 50)) { + buff_index += i; + } else { + MSG("ERROR: snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + } else { + i = snprintf((char *)(databuf + buff_index), 50, ",\"modu\":\"LORA\",\"datr\":\"SF%iBW%i\",\"codr\":\"4/6\"", sf, bw); + if ((i>=0) && (i < 50)) { + buff_index += i; + } else { + MSG("ERROR: snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + } + + /* signal polarity */ + if (invert) { + memcpy((void *)(databuf + buff_index), (void *)",\"ipol\":true", 12); + buff_index += 12; + } else { + memcpy((void *)(databuf + buff_index), (void *)",\"ipol\":false", 13); + buff_index += 13; + } + + /* Preamble size */ + if (strcmp(mod, "LORA") == 0) { + memcpy((void *)(databuf + buff_index), (void *)",\"prea\":8", 9); + buff_index += 9; + } + + /* payload size */ + i = snprintf((char *)(databuf + buff_index), 12, ",\"size\":%i", payload_size); + if ((i>=0) && (i < 12)) { + buff_index += i; + } else { + MSG("ERROR: snprintf failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* payload JSON object */ + memcpy((void *)(databuf + buff_index), (void *)",\"data\":\"", 9); + buff_index += 9; + payload_index = buff_index; /* keep the value where the payload content start */ + + /* payload place-holder & end of JSON structure */ + x = bin_to_b64(payload_bin, payload_size, payload_b64, sizeof payload_b64); /* dummy conversion to get exact size */ + if (x >= 0) { + buff_index += x; + } else { + MSG("ERROR: bin_to_b64 failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* Close JSON structure */ + memcpy((void *)(databuf + buff_index), (void *)"\"}}", 3); + buff_index += 3; /* ends up being the total length of payload */ + + /* main loop */ + for (i = 0; i < repeat; ++i) { + /* fill payload */ + payload_bin[0] = id; + payload_bin[1] = (uint8_t)(i >> 24); + payload_bin[2] = (uint8_t)(i >> 16); + payload_bin[3] = (uint8_t)(i >> 8); + payload_bin[4] = (uint8_t)(i); + payload_bin[5] = 'P'; + payload_bin[6] = 'E'; + payload_bin[7] = 'R'; + payload_bin[8] = (uint8_t)(payload_bin[0] + payload_bin[1] + payload_bin[2] + payload_bin[3] + payload_bin[4] + payload_bin[5] + payload_bin[6] + payload_bin[7]); + for (j = 0; j < (payload_size - 9); j++) { + payload_bin[9+j] = j; + } + +#if 0 + for (j = 0; j < payload_size; j++ ) { + printf("0x%02X ", payload_bin[j]); + } + printf("\n"); +#endif + + /* encode the payload in Base64 */ + x = bin_to_b64(payload_bin, payload_size, payload_b64, sizeof payload_b64); + if (x >= 0) { + memcpy((void *)(databuf + payload_index), (void *)payload_b64, x); + } else { + MSG("ERROR: bin_to_b64 failed line %u\n", (__LINE__ - 4)); + exit(EXIT_FAILURE); + } + + /* send packet to the gateway */ + byte_nb = sendto(sock, (void *)databuf, buff_index, 0, (struct sockaddr *)&dist_addr, addr_len); + if (byte_nb == -1) { + MSG("WARNING: sendto returned an error %s\n", strerror(errno)); + } else { + MSG("INFO: packet #%i sent successfully\n", i); + } + + /* wait inter-packet delay */ + usleep(delay * 1000); + + /* exit loop on user signals */ + if ((quit_sig == 1) || (exit_sig == 1)) { + break; + } + } + + exit(EXIT_SUCCESS); +} + +/* --- EOF ------------------------------------------------------------------ */ |