OpenWRT custom scripts

\etc\init.d\wwan0_loop.sh

#!/bin/sh /etc/rc.common

USE_PROCD=1
START=99
STOP=01

start_service() {
    procd_open_instance
    procd_set_param command /usr/sbin/wwan0_loop.sh
    procd_set_param stdout 1
    procd_set_param stderr 1
    procd_close_instance
}

\root\wwan0_traffic.lua

#!/usr/bin/lua

local filesize = require "filesize"
local rxfile = io.open("/sys/class/net/wwan0/statistics/rx_bytes", "r")
local txfile = io.open("/sys/class/net/wwan0/statistics/tx_bytes", "r")

local rx = filesize(tonumber(rxfile:read("*all")))
local tx = filesize(tonumber(txfile:read("*all")))

print("RX:", rx, "TX:",tx)

rxfile:close()
txfile:close()

\usr\sbin\get_lcid

#!/bin/sh
rm -f /tmp/logread.txt

logread -f > /tmp/logread.txt &
LOGREAD_PID=$!

mmcli -m 0 --command="AT+CREG?" > /dev/null
kill -9 ${LOGREAD_PID}

ATRES=$(grep -Eo '\+CREG: [0-9],[0-9],"[0-9A-F]+","[0-9A-F]+"' /tmp/logread.txt)
rm -f /tmp/logread.txt

echo $ATRES | cut -d, -f4 | grep -Eo '[0-9A-F]+'

\usr\sbin\promsignal

#!/bin/sh

# Global Configuration
mmcli -m 0 --signal-setup=10 2>&1 1>/dev/null

# Fetch & parse signal from MM
RES=$(mmcli -m 0 --signal-get -K)
RSRQ=$(echo -en "$RES" | grep modem.signal.lte.rsrq | grep -Eo "\-?[0-9]*.[0-9]*$") 
RSRP=$(echo -en "$RES" | grep modem.signal.lte.rsrp | grep -Eo "\-?[0-9]*.[0-9]*$") 
SNR=$(echo -en "$RES" | grep modem.signal.lte.snr | grep -Eo "\-?[0-9]*.[0-9]*$")

# Run AT Command to get LCID not reported by MM
rm -f /tmp/logread.txt
logread -f > /tmp/logread.txt &
LOGREAD_PID=$!
mmcli -m 0 --command="AT+CREG?" > /dev/null
kill -9 ${LOGREAD_PID}
ATRES=$(grep -Eo '\+CREG: [0-9],[0-9],"[0-9A-F]+","[0-9A-F]+"' /tmp/logread.txt)
rm -f /tmp/logread.txt
LCID=$(echo $ATRES | cut -d, -f4 | grep -Eo '[0-9A-F]+')

# Display parsed data
echo "rsrq=$RSRQ, rsrp=$RSRP, snr=$SNR, lcid=$LCID" 

\usr\sbin\wwan0_loop.sh

#!/bin/sh

mmcli --modem 0 --monitor-state | while read r ; do /usr/sbin/wwan0_reconnect.sh ; done

\usr\sbin\wwan0_reconnect.sh

#!/bin/sh

MODEM_STATE=$(mmcli --modem 0 --output-keyvalue|grep "modem.generic.state"|grep -o "\w*$")
BEARER=$(mmcli --modem 0 --output-keyvalue|grep 'modem.generic.bearers.value\[1\]'|grep -o '\d*$')
BEARER_CONNECTED=$(mmcli -b $BEARER --output-keyvalue|grep bearer.status.connected|grep -o "\w*$")
echo "(modem state: $MODEM_STATE, bearer connected: $BEARER_CONNECTED, bearer id: $BEARER)"

if [[ $MODEM_STATE == 'registered' ]] ; then
  echo "trigger simple-connect"
  ifup broadband
  sleep 600 # prevent loops
else
  echo "do nothing"
fi