Setup LED that can show the status of internet connectivity using raspberry pi gpio

Installing and Using OpenWrt
1

My openwrt router runs on a raspberry pi 4 which got gpio pins.

Like we do on traditional raspberry pi, can we control the GPIO pins voltage?

My idea is to setup a system service that check for internet connectivity, and when no connectivity, toggle gpio pin voltage to turn the led connected to it off.

Thanks.

2

I came up with below to achieve this,

#!/bin/sh

CHIP="gpiochip0"
GPIO=14
STATE_FILE="/tmp/gpio14.state"

# Turn off LED initially
gpioset -c $CHIP -z $GPIO=0
echo 0 > $STATE_FILE

while true; do
  if ping -c 1 -W 2 192.168.0.243 > /dev/null 2>&1; then
    if [ "$(cat $STATE_FILE)" != "1" ]; then
      killall gpioset 2>/dev/null
      gpioset -c $CHIP -z $GPIO=1
      echo 1 > $STATE_FILE
      killall gpioset 2>/dev/null
    fi
  else
    if [ "$(cat $STATE_FILE)" != "0" ]; then
      killall gpioset 2>/dev/null
      gpioset -c $CHIP -z $GPIO=0
      echo 0 > $STATE_FILE
      killall gpioset 2>/dev/null
    fi
  fi
  sleep 10
done

is there a better approach for this?