Custom scripts for LED functionality in TL-WA860RE repeaters running DD-WRT.

tl-wa860re_dd-wrt_led.sh

#!/bin/sh
# This version of the script is meant for repeaters running in client mode,
# i.e. rebroadcasting Wi-Fi on a different LAN from an existing wireless network.
# Run this on startup like so:
#   sleep 10
#   sh /tmp/custom.sh &
# LED behavior:
#   WLAN green - AP up, Good connection to base station
#        amber - AP up, Poor connection to base station
#        off   - AP down
#   Eth  green - Ethernet connected
#   Eth  off   - Ethernet disconnected
#   Pwr  green - AP up
#        amber - AP down
# Updated as of build 50906.
WLAN_AMBER=0
WLAN_GREEN=2
PWR_AMBER=12
PWR_GREEN=14
ETH_GREEN=20
hi(){
  gpio disable "$1"
}
lo(){
  gpio enable "$1"
}

# Don't run if already running
if ps | grep custom.sh | grep -v $$ | grep sh | grep -v grep; then
  echo "Script already running as seen above. Exiting."
  exit 1
fi

# Main loop
while sleep 1; do
  # Connection data
  rssi=$(iw ath0 link | awk '/signal/ {print $2}')
  wan_state=$(cat /sys/class/net/wlan0/operstate)
  eth_state=$(cat /sys/class/net/eth0/carrier)

  # Ethernet connected state
  if [ "$eth_state" -eq 1 ]; then
    hi $ETH_GREEN
  else
    lo $ETH_GREEN
  fi

  # WLAN connected & signal states
  if [ "$wan_state" = "up" ]; then
    hi $PWR_GREEN
    lo $PWR_AMBER

    if [ "$rssi" -lt -67 ]; then
      hi $WLAN_AMBER
      lo $WLAN_GREEN
    else
      hi $WLAN_GREEN
      lo $WLAN_AMBER
    fi
  else
    lo $WLAN_AMBER
    lo $WLAN_GREEN
    hi $PWR_AMBER
    lo $PWR_GREEN
  fi
done

tl-wa860re_dd-wrt_led_APMODE.sh

#!/bin/sh
# This version of the script is meant for repeaters running in AP mode,
# i.e. broadcasting Wi-Fi from a LAN connection.
# Run this twice on startup with the "ping" option on the second run like so:
#   sleep 10
#   sh /tmp/custom.sh &
#   sh /tmp/custom.sh ping &
# LED behavior:
#   WLAN green - AP up, Internet up
#        amber - AP up, Internet down
#        off   - AP down
#   Eth  green - Ethernet connected
#   Eth  off   - Ethernet disconnected
#   Pwr  green - AP up
#        amber - AP down
# Updated as of build 50906.
WLAN_AMBER=0
WLAN_GREEN=2
PWR_AMBER=12
PWR_GREEN=14
ETH_GREEN=20
hi(){
  gpio disable "$1"
}
lo(){
  gpio enable "$1"
}

# Check if we are running in connection watchdog mode
if [ "$1" = "ping" ]; then
  if [ -f "/tmp/cwdog.lock" ]; then
    echo "Already running, replacing instance."
    kill -9 "$(cat /tmp/cwdog.lock)"
  fi
  echo $$ > /tmp/cwdog.lock

  while sleep 10; do
    ping -c 1 8.8.8.8 1>/dev/null
    ping_result=$?

    if [ "$ping_result" -eq 0 ]; then
      echo "up" > /tmp/ping_result
    else
      echo "down" > /tmp/ping_result
    fi
  done
else
  if [ -f "/tmp/ledd.lock" ]; then
    echo "Already running, replacing instance."
    kill -9 "$(cat /tmp/ledd.lock)"
  fi
  echo $$ > /tmp/ledd.lock

  # Main loop
  while sleep 1; do
    # Connection data
    conn_state=$(cat /tmp/ping_result)
    wlan_state=$(cat /sys/class/net/wlan0/operstate)
    eth_state=$(cat /sys/class/net/eth0/carrier)

    # Ethernet connected state
    if [ "$eth_state" -eq 1 ]; then
      hi $ETH_GREEN
    else
      lo $ETH_GREEN
    fi

    # AP & connection states
    if [ "$wlan_state" = "up" ]; then
      hi $PWR_GREEN; lo $PWR_AMBER

      if [ "$conn_state" = "up" ]; then
        hi $WLAN_GREEN; lo $WLAN_AMBER
      else
        hi $WLAN_AMBER; lo $WLAN_GREEN
      fi
    else
      lo $WLAN_AMBER; lo $WLAN_GREEN
      hi $PWR_AMBER; lo $PWR_GREEN
    fi
  done
fi