From 15315f953900c57b92919eee3f20490b9196af4a Mon Sep 17 00:00:00 2001
From: Mike Fiore <mfiore@multitech.com>
Date: Mon, 14 Dec 2015 09:44:02 -0600
Subject: add guts of function node that parses data packets sent by the
 BOX/EVB

---
 parser_function.txt | 189 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 189 insertions(+)
 create mode 100644 parser_function.txt

diff --git a/parser_function.txt b/parser_function.txt
new file mode 100644
index 0000000..06a7a60
--- /dev/null
+++ b/parser_function.txt
@@ -0,0 +1,189 @@
+var data_type = {
+	none : 0x00,
+	led1 : 0x01,
+	led2 : 0x02,
+	lux_max : 0x03,
+	lux_min : 0x04,
+	lux_curr : 0x05,
+	baro_max : 0x06,
+	baro_min : 0x07,
+	baro_curr : 0x08,
+	temp_max : 0x09,
+	temp__min : 0x0A,
+	temp_curr : 0x0B,
+	accel_max : 0x0C,
+	accel_min : 0x0D,
+	accel_curr : 0x0E,
+	configuration : 0x0F,
+	gpio_in : 0x10,
+	gpio_out : 0x11,
+	current_max : 0x12,
+	current_min : 0x13,
+	current_curr : 0x14,
+	gps_latitude : 0x15,
+	gps_longitude : 0x16,
+	gps_time : 0x17,
+	gps_date : 0x18,
+	gps_lock : 0x19,
+	qos_up : 0x1A,
+	qos_dwn : 0x1B,
+	rf_out : 0x1C,
+	data_mark : 0x1D,
+};
+
+var data_struc = {
+	data_valid : 0,
+	block_start :0,
+	temperature : 0,
+	x_pos : 0,
+	y_pos : 0,
+	z_pos : 0,
+	baro_pressure : 0,
+	lux : 0,
+	pkt_timer :0,
+	rf_pwr : 0,
+	sf_val : 0,
+	gateways : 0,
+	margin_up : 0,
+	rssi_dwn : 0,
+	snr_dwn :0 ,
+	lat_deg : 0 ,
+	lat_min : 0,
+	long_deg : 0,
+	long_min : 0,
+	num_sats : 0 ,
+	gps_status : 0,
+};
+
+context.global.data_out = context.global.data_out || data_struc;
+var pData = context.global.data_out;
+
+var msg_pntr = 0;
+var temp = 0;
+
+while (msg_pntr < msg.payload.length){
+	switch (msg.payload[msg_pntr]){
+	case data_type.lux_max:
+	case data_type.lux_min:
+	case data_type.lux_curr:
+		pData.lux = msg.payload[++msg_pntr] << 8 
+		pData.lux |= msg.payload[++msg_pntr];
+		pData.lux = pData.lux * 0.24;
+		msg_pntr++;
+		break;
+	case data_type.baro_max:
+	case data_type.baro_min:
+	case data_type.baro_curr:
+		pData.baro_pressure = msg.payload[++msg_pntr]<<16;
+		pData.baro_pressure |= msg.payload[++msg_pntr]<<8;
+		pData.baro_pressure |= msg.payload[++msg_pntr];
+		pData.baro_pressure = pData.baro_pressure * 0.25;
+		msg_pntr++;
+		break;
+	case data_type.accel_max:
+	case data_type.accel_min:
+	case data_type.accel_curr:
+		pData.x_pos = ((msg.payload[++msg_pntr] << 24) >> 24) * 0.0625;
+		pData.y_pos = ((msg.payload[++msg_pntr] << 24) >> 24) * 0.0625;
+		pData.z_pos = ((msg.payload[++msg_pntr] << 24) >> 24) * 0.0625;
+		msg_pntr++;
+		break;
+	case data_type.temp_min:
+	case data_type.temp_max:
+	case data_type.temp_curr:
+		pData.temperature = msg.payload[++msg_pntr] << 24;
+		pData.temperature |= msg.payload[++msg_pntr] << 16;
+		pData.temperature = (pData.temperature >> 16) * .0625;
+		msg_pntr++;
+		break;
+	case data_type.configuration:
+		pData.pkt_timer = msg.payload[++msg_pntr];
+		msg_pntr++
+		break;
+	case data_type.current_max:
+	case data_type.current_min:
+	case data_type.current_curr:
+		msg_pntr++;
+		msg_pntr++;
+		msg_pntr++;
+		break;
+	case data_type.gps_latitude:
+		pData.lat_deg = (msg.payload[++msg_pntr] << 24) >> 24;
+		pData.lat_min = msg.payload[++msg_pntr];
+		temp = msg.payload[++msg_pntr] << 8 
+		temp |= msg.payload[++msg_pntr];
+		pData.lat_min = pData.lat_min + (temp * 0.0001);
+		msg_pntr++;
+		break;
+	case data_type.gps_longitude:
+		pData.long_deg = (msg.payload[++msg_pntr] << 24);
+		pData.long_deg |= (msg.payload[++msg_pntr] << 16);
+		pData.long_deg = pData.long_deg >> 16;
+		pData.long_min = msg.payload[++msg_pntr];
+		temp = msg.payload[++msg_pntr] << 8 
+		temp |= msg.payload[++msg_pntr];
+		pData.long_min = pData.long_min + (temp * 0.0001);
+		msg_pntr++;
+		break;
+	case data_type.gps_time:
+		msg_pntr++;
+		msg_pntr++;
+		msg_pntr++;
+		msg_pntr++;
+		break;
+	case data_type.gps_date:
+		msg_pntr++;
+		msg_pntr++;
+		msg_pntr++;
+		msg_pntr++;
+		break;
+	case data_type.gps_lock:
+		msg_pntr++;
+		pData.gps_status = msg.payload[msg_pntr] & 0x0F;
+		pData.num_sats = msg.payload[msg_pntr++] >> 4;
+		break;
+	case data_type.qos_up:
+		pData.gateways = msg.payload[++msg_pntr] << 24;
+		pData.gateways |= msg.payload[++msg_pntr] << 16;
+		pData.gateways = pData.gateways >> 16;
+		pData.margin_up = (msg.payload[++msg_pntr] << 24) >> 24;
+		pData.rf_pwr = (msg.payload[++msg_pntr] << 24) >> 24;
+		msg_pntr++;
+		break;
+	case data_type.qos_dwn:
+		pData.rssi_dwn = msg.payload[++msg_pntr] << 24;
+		pData.rssi_dwn |= msg.payload[++msg_pntr] << 16;
+		pData.rssi_dwn = pData.rssi_dwn >> 16;
+		pData.snr_dwn = ((msg.payload[++msg_pntr] << 24) >> 24);
+		msg_pntr++;
+		break;
+	case data_type.rf_out:
+		pData.rf_pwr = (msg.payload[++msg_pntr] << 24) >> 24;
+		msg_pntr++;
+		break;
+	case data_type.data_mark:
+		if (msg_pntr == 0) {
+			pData = data_struc;
+			pData.block_start = 1;
+			msg_pntr++;
+		}
+		else if (msg_pntr == (msg.payload.length - 1) && (pData.block_start === 1)) {
+				pData.data_valid = 1;
+				msg_pntr++;
+			}
+			else {
+				pData = data_struc;
+				msg_pntr = msg.payload.length;
+				}
+		break;
+	default:
+		pData = data_struc;
+		msg_pntr = msg.payload.length;
+	}
+}
+
+pData.sf_val = parseInt(msg.datr.replace("SF","  "),10);
+
+context.global.data_out = pData;
+
+return pData;
-- 
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