CPE210-CPE220-CPE510-CPE520 (OpenWrt).md

• led-wifi

  Service to show signal strength with LEDs.
  Copy to /etc/init.d, run chmod 0755 led-wifi, enable using /etc/init.d/led-wifi enable or LuCi.

• poe-pt.sh

  Shell script to enable POE-Passthrough on the second ethernet port.
  Copy and paste into LuCi startup scripts.

led-wifi

#!/bin/sh /etc/rc.common
 
START=96

led1='tp-link:green:link1'
led2='tp-link:green:link2'
led3='tp-link:green:link3'
led4='tp-link:green:link4'
 
led_set() {
  echo $1 > /sys/class/leds/$2/brightness
}
 
start() {
  previous_signal_strength=-1
 
  (while true; do
 
    rssi=`cat /proc/net/wireless | awk 'NR==3 {print $4}' | sed 's/\.//'`
    # echo "Received Signal Strength Indication: $rssi"
 
    if [ -z $rssi ] || [ $rssi -ge 0 ]; then signal_strength=0 # Error or in AP-Mode
    elif [ $rssi -ge -65 ] ; then signal_strength=4 # Excellent
    elif [ $rssi -ge -73 ] ; then signal_strength=3 # Good
    elif [ $rssi -ge -80 ] ; then signal_strength=2 # Fair
    elif [ $rssi -ge -94 ] ; then signal_strength=1 # Bad
    else signal_strength=5
    fi
 
    if [ $previous_signal_strength != $signal_strength ]; then
      case $signal_strength in
        5)  led_set 0 $led1; led_set 0 $led2; led_set 0 $led3; led_set 0 $led4;;
        4)  led_set 1 $led1; led_set 1 $led2; led_set 1 $led3; led_set 1 $led4;;
        3)  led_set 1 $led1; led_set 1 $led2; led_set 1 $led3; led_set 0 $led4;;
        2)  led_set 1 $led1; led_set 1 $led2; led_set 0 $led3; led_set 0 $led4;;
        1)  led_set 1 $led1; led_set 0 $led2; led_set 0 $led3; led_set 0 $led4;;
        0)  led_set 1 $led1; led_set 1 $led2; led_set 1 $led3; led_set 1 $led4;;
      esac
    # echo "Signal Strength (0-4): $signal_strength"
    fi
 
    previous_signal_strength=$signal_strength
    sleep 1
 
  done) &
  return 0
}
 
stop() {
  break
  led_set 0 $led1; led_set 0 $led2; led_set 0 $led3; led_set 0 $led4
  return 0
}
 
restart() {
  stop "$@"
  start "$@"
}

poe-pt.sh

#!/bin/sh

# source: https://forum.freifunk.net/t/tp-link-cpe210-510/594/38
cd /sys/class/gpio/gpio20; echo 20 > ../export; echo out > direction; echo 1 > value