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#!/bin/bash
. /etc/default/mts-io
sysdir=/sys/devices/platform/mts-io
i2c=/sys/bus/i2c/devices/
SYSFS="/usr/sbin/mts-io-sysfs"
GPSCONFIGTYPE="/var/run/config/gpstype"
set_hw_name() {
hw=$(${SYSFS} show hw-version)
hw_name=(${hw//-/ })
}
set_batt_charge() {
if [[ $batcap == 1 ]] ; then
i2cset -m 0x60 -y 0 0x09 0x01 0x20
i2cset -m 0x03 -y 0 0x09 0x02 0x02
i2cset -m 0x0c -y 0 0x09 0x02 0x0c
fi
}
set_gpslink() {
[[ -d /var/run/config ]] || mkdir /var/run/config
gpscap=$(cat ${sysdir}/capability/gps)
# hw_name must be mtcap, and gpscap == 1
if ! [[ ${hw_name} =~ ^MTCAP$ ]] || ((gpscap == 0)) ; then
return
fi
ln -sf /dev/ttyS1 /dev/gps0
echo "u-blox" >"$GPSCONFIGTYPE"
}
setwificap() {
WIFICAP=0
if [[ -f ${sysdir}/capability/wifi ]] && (($(cat ${sysdir}/capability/wifi) == 1)) ; then
WIFICAP=1
fi
}
lora_init() {
# reset lora chip
mts-io-sysfs store lora/reset 1
mts-io-sysfs store lora/reset 0
usleep 100000
mts-io-sysfs store lora/reset 1
}
eth_init() {
# reset eth phy
mts-io-sysfs store eth-reset 1
mts-io-sysfs store eth-reset 0
usleep 100000
mts-io-sysfs store eth-reset 1
}
# Normal state when powered up
wifi_init1() {
(($WIFICAP)) || return 0
# reset wlan
mts-io-sysfs store wlan-rst 0
# disable wlan
mts-io-sysfs store wlan-en 0
}
wifi_init2() {
(($WIFICAP)) || return 0
mts-io-sysfs store wlan-en 1
usleep 30000 # 30mS according to WILC1000 spec.
mts-io-sysfs store wlan-rst 1
}
GNSS_RESET=${sysdir}/gnss-reset
gnss_init() {
((GPSGNSSRESET)) || return 0
USLPTIME=60000
if [[ -f $GNSS_RESET ]] ; then
echo 0 >$GNSS_RESET
usleep $USLPTIME
echo 1 >$GNSS_RESET
fi
}
cell_init() {
# remove /dev/modem_at[0,1] symlinks
rm -f /dev/modem_at[0,1]
if [ -w /sys/devices/platform/mts-io/radio-power ] ; then
# power down the cellular chip gracefully
mts-io-sysfs store radio-power 0
# power up the cellular chip
mts-io-sysfs store radio-power 1
fi
}
start_lora_led_updater() {
lora-led-updater &
}
gettime() {
[[ $(cat /proc/uptime) =~ ([^[:space:]]+) ]]
echo ${BASH_REMATCH[1]}
}
wait_for_supercap() {
if ! [[ -f ${sysdir}/capability/supercap ]] ; then
# Driver not loaded, maybe EEPROM not set
return
fi
supercap=$(mts-io-sysfs show capability/supercap 2>/dev/null)
if ((supercap != 1)) ; then
return
fi
if ((SUPERCAPFULL != 1)) ; then
return
fi
t0=$(gettime)
maxwait=$(awk "BEGIN {print ${t0}+${SUPERCAPFULL_MAXWAIT}}")
while : ; do
if (($(mts-io-sysfs show power-fail) == 1)) ; then
# If we are booting, then go down.
# This will not work with systemd.
if [[ $(ps -h -o cmd -p $PPID) =~ /bin/sh[[:space:]]/etc/init.d/rc[[:space:]]S$ ]] ; then
logger -s -t 'mts-io' -p daemon.err "No power during boot, so power off"
exec /sbin/poweroff
# NOT REACHED
fi
fi
if (($(mts-io-sysfs show supercap-full) == 1)) ; then
logger -s -t 'mts-io' -p daemon.err 'Supercap Charged'
return
fi
t1=$(gettime)
if awk "BEGIN { if($t1<$maxwait)exit 1 }" ; then
break
fi
sleep 1
done
logger -s -t 'mts-io' -p daemon.err 'Supercap not full but timer expired -- continuing boot'
}
case $1 in
start)
# SPI driver for LoRa
modprobe spidev
# Point the firmware API at our i2c EEPROMs
echo -n ${i2c} > /sys/module/firmware_class/parameters/path
echo "Loading mts-io module"
modprobe -r atmel_mci
# Point the firmware API at our i2c EEPROMs
echo -n ${i2c} > /sys/module/firmware_class/parameters/path
modprobe mts_io
batcap=$(mts-io-sysfs show capability/battery)
setwificap
set_batt_charge
wifi_init1
lora_init
eth_init
cell_init &
start_lora_led_updater
wifi_init2
gnss_init
modprobe atmel_mci
(($WIFICAP)) && modprobe wilc1000
(($WIFICAP)) && modprobe wilc1000-sdio
set_hw_name
set_gpslink
wait_for_supercap
;;
stop)
echo "Unloading mts-io module"
wifi_init1 # Power down wifi
modprobe -r wilc1000 >/dev/null 2>&1
modprobe -r wilc1000-sdio >/dev/null 2>&1
modprobe -r mts_io >/dev/null 2>&1
;;
*)
echo "Usage: $0 {start|stop}"
exit 2
;;
esac
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