🌴 Sync 2026-03-05 23:51:42

ssw/Makefile

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+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ssw
+PKG_VERSION:=0.0.2
+PKG_RELEASE:=1
+PKG_MAINTAINER:=Konstantine Shevlakov <shevlakov@132lan.ru>
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/$(PKG_NAME)
+  PKGARCH:=all
+  DEPENDS:=+modemmanager +mwan3
+  TITLE:=SIM-card switcher and tracker
+endef
+
+define Package/$(PKG_NAME)/description
+	SIM-card tracker for HuastLink HC-G60 and ZBTLint ZBT-WE2806-A
+	or similar CPE-routers with two SIM slots and one 4g/5G modem
+endef
+
+
+define Build/Prepare
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+endef
+
+
+define Package/$(PKG_NAME)/install
+	$(CP) ./root/* $(1)/
+endef
+
+$(eval $(call BuildPackage,$(PKG_NAME)))

ssw/root/etc/config/ssw

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+
+config modem 'modem'
+	option gpio 'modem'
+	option value '1'
+
+config sim 'sim'
+	option gpio 'sim'
+	option value '1'
+
+config failover 'failover'
+

ssw/root/etc/init.d/ssw

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+#!/bin/sh /etc/rc.common
+
+# SIM slot switcher for HuastLink HC-G60 or ZBT-WE2806-A
+# by Konstantine Shevlakov at <shevlakov@132lan.ru> 2025
+
+START=99
+STOP=10
+USE_PROCD=1
+
+load_config_gpio(){
+	local gpio value
+	for c in gpio value; do
+		config_get $1_$c "$1" $c
+		export $1_$c
+	done
+}
+
+load_config_failover(){
+	local enable mode interval times_rsrp times_ping revert rsrp host
+	for c in enable mode interval times_rsrp times_ping revert rsrp host; do
+		config_get $1_$c "$1" $c
+		export $1_$c 
+	done
+}
+
+reload_iface(){
+	[ "$iface" ] &&  {
+		for i in $iface; do
+			ifup $i
+		done
+	}
+}
+
+start_service(){
+	config_load ssw
+	config_foreach load_config_gpio modem
+	config_foreach load_config_gpio sim
+	modem_cur=$(cat /sys/class/gpio/$modem_gpio/value)
+	sim_cur=$(cat /sys/class/gpio/$sim_gpio/value)
+	iface=$(uci show network | awk -F [.] '/devices/{gsub("'\''","");print $2}' | tail -1)
+	if [ "$modem_value" = "$modem_cur" -a "$sim_value" = "$sim_cur" ]; then
+		continue
+	elif [ "$modem_value" = "$modem_cur" -a "$modem_value" = "1" ]; then
+		logger -t "SIM SW" "modem already enabled on gpio $modem_gpio. Restart it"
+		echo "0" > /sys/class/gpio/$modem_gpio/value
+		sleep 2
+		echo "$sim_value" > /sys/class/gpio/$sim_gpio/value
+		echo "$modem_value" > /sys/class/gpio/$modem_gpio/value
+		if [ -x /etc/init.d/smstools3 ]; then
+			/etc/init.d/smstools3 restart
+		fi
+		sleep 30 && reload_iface &
+	else
+		logger -t "SIM SW" "modem powered changed"
+		echo "$sim_value" > /sys/class/gpio/$sim_gpio/value
+		echo "$modem_value" > /sys/class/gpio/$modem_gpio/value
+		if [ -x /etc/init.d/smstools3 ]; then
+			/etc/init.d/smstools3 restart
+		fi
+		sleep 30 && reload_iface &
+	fi
+	#config_foreach load_config_failover failover
+	procd_open_instance
+	procd_set_param command /usr/share/ssw_track.sh
+	procd_close_instance
+}
+
+reload_service(){
+        start
+}
+
+service_triggers(){
+	procd_add_reload_trigger "ssw"
+}

ssw/root/usr/share/ssw_track.sh

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+#!/bin/sh
+
+# SIM slot switcher for HuastLink HC-G60 or ZBT-WE2806-A
+# or similiar cpe OpenWrt-routers
+# by Konstantine Shevlakov at <shevlakov@132lan.ru> 2025
+
+NODE="SW SIM"
+
+# config file stored in /etc/config/ssw
+# define gpios in /etc/config/system
+#
+# mandatory section names of gpio: modem and sim
+# example config file /etc/config/system for gpio_switch
+#
+# config gpio_switch 'modem'
+#        option name 'Modem pwr'
+#        option gpio_pin '512'
+#        option value '1'
+#
+# config gpio_switch 'sim'
+#        option name 'SIM switch'
+#        option gpio_pin 'sim'
+#        option value '1'
+#
+# if gpio not defined on dts and have integer number on gpioswitch then
+# option gpio must have value 'gpioN'. Example /etc/config/ssw:
+#
+# config modem 'modem'
+#        option gpio 'gpio512'
+#        option value '1'
+#
+# config sim 'sim'
+#        option gpio 'sim'
+#        option value '1'
+
+
+# Get Variables
+get_vars(){
+	for v in enable interval revert rsrp times_rsrp apn1 apn2; do
+		eval $v=$(uci -q get ssw.failover.${v} 2>/dev/nul)
+	done
+	for d in modem sim; do
+		for s in gpio value; do
+			eval "${d}_${s}=$(uci -q get ssw.${d}.${s} 2>/dev/null)"
+		done 
+	done
+	[ -n "$interval" ] || interval=60
+	[ -n "$times_rsrp" ] || times_rsrp=5
+}
+
+# SIM Switch
+sw_sim(){
+	case $cur_sim in
+		0) next_sim=1 ;;
+		1) next_sim=0 ;;
+	esac
+
+	echo "0" > /sys/class/gpio/$modem_gpio/value
+	echo "$next_sim" > /sys/class/gpio/$sim_gpio/value
+
+	if [ "$modem_value" = "1" ]; then
+		sleep 2
+		echo "1" > /sys/class/gpio/$modem_gpio/value
+		if [ -x /etc/init.d/smstools3 ]; then
+			/etc/init.d/smstools3 restart
+		fi
+	fi
+	set > /tmp/apn.ssw
+}
+
+# Revert rule switch
+sw_rule(){
+	if [ -f /tmp/ssw.vars ]; then
+		. /tmp/ssw.vars
+	fi
+	# Revert SIM card to default slot
+	if [ "$cur_sim" -ne "$sim_value" ]; then
+		if [ "$(date +%s)" -gt "$SWDATE" ]; then
+			logger -t "$NODE" "Revert to default SIM slot with $apn"
+			sw_sim
+		fi
+	fi
+}
+
+# Check interface state via mwan3
+monitor_mwan3(){
+	iface=$(uci show network | awk -F [.] '/devices/{print $2}')
+	# Check link status
+	if [ -r /tmp/run/mwan3/iface_state/$iface ]; then
+		link_status=$(cat /tmp/run/mwan3/iface_state/$iface | grep online | wc -l)
+	else
+		# Disable track link via mwan3
+		link_status=1
+	fi
+}
+
+# RSRP average value by modemmanager. Enable singnal monitor!
+monitor_rsrp(){
+	device="$(uci show network | awk -F [=] '/devices/{gsub("'\''","");print $2}')"
+	SIGNAL="$(mmcli -J -m $device --signal-get)"
+	CRSRP=$(echo "$SIGNAL" | jsonfilter -e '@["modem"][*]["lte"]["rsrp"]' | awk '{printf "%.0f\n", $1}')
+	if ! [ $CRSRP ]; then
+		CRSRP=$(echo "$SIGNAL" | jsonfilter -e '@["modem"][*]["5g"]["rsrp"]' | awk '{printf "%.0f\n", $1}')
+	fi
+
+	if [ $CRSRP -ne 0 ]; then
+		echo $CRSRP >> /tmp/ssw_rsrp.var
+	fi
+	if [ $cnt -eq $times_rsrp ]; then
+		RSRP=$(awk '{sum+=$1} END { printf "%.0f\n", sum/NR }' /tmp/ssw_rsrp.var)
+		cat /dev/null > /tmp/ssw_rsrp.var
+		if [ $RSRP -lt $rsrp ]; then
+			mon_rsrp=0
+		else
+			mon_rsrp=1
+		fi
+	fi
+}
+
+# reload iface
+reload_iface(){
+	[ "$iface" ] && {
+		for i in $iface; do
+			ifup $i
+		done
+	}
+}
+
+# Stuff
+cnt=1
+while true; do
+	get_vars
+	sleep $interval
+	if [ "$enable" = "1" ]; then
+		cur_sim=$(cat /sys/class/gpio/$sim_gpio/value)
+		monitor_rsrp
+		monitor_mwan3
+		if [ "$cnt" -eq "$times_rsrp" ]; then
+			if [ "$link_status" = "0" -o "$mon_rsrp" = "0" ]; then
+
+				if [ "$sim_value" -eq "$cur_sim" ]; then
+					apn=$apn2
+				else
+					apn=$apn1
+				fi
+				iface=$(uci show network | awk -F [.] '/devices/{gsub("'\''","");print $2}' | tail -1)
+				if [ $RSRP ]; then
+					if [ "$mon_rsrp" = "0" ]; then
+						logger -t "$NODE" "Modem interface: $iface is average RSRP= ${RSRP} dBm. Min. value ${rsrp} dBm."
+					fi
+					if [ "$link_status" = "0" ]; then
+						logger -t "$NODE" "Modem interface: $iface is loss connectivity"
+					fi
+				else
+					logger -t "$NODE" "WARNING: RSRP value not exist. Please check \"Resfesh signal\" option of modem interface!"
+				fi
+				if [ "${#apn}" -gt "0" ]; then
+					uci set network.$iface.apn="$apn"
+					logger -t "$NODE" "Switch SIM-card slot with APN: $apn"
+				else
+					logger -t "$NODE" "WARNING: APN not defined. Switch SIM-card slot with default APN."
+					uci set network.$iface.apn="internet"
+				fi
+
+				uci commit network
+				reload_config network
+
+				if [ "$revert" = "1" ]; then
+					if [ "$cur_sim" -eq "$sim_value" ]; then 
+						FBT=${FBT:=$((($interval+$times_rsrp)*2))}
+						FBT=$(($FBT*2))
+						SWDATE=$((`date +%s`+$FBT))
+						echo "FBT=$FBT" > /tmp/ssw.vars
+						echo SWDATE=$SWDATE >> /tmp/ssw.vars
+						logger -t "$NODE" "Back to default SIM-slot after $(date -d @${SWDATE})"
+					fi
+				fi
+				sw_sim && sleep 20 && reload_iface &
+			fi
+			if [ "$revert" = "1" ]; then
+				sw_rule && sleep 20 && reload_iface &
+			fi
+			cnt=0
+		else
+			cnt=$(($cnt+1))
+		fi
+	fi
+done