#!/bin/bash

# TACT SW 1
sudo config-pin P8_45 gpio >/dev/null

# LED 1
sudo config-pin P8_46 gpio >/dev/null

# init
sudo gpioset gpiochip2 7=0

GPIOSET_PID=""
SW=1

# input loop
while read line
do
    event=`echo ${line} | sed -n 's/.*\(RISING\|FALLING\) EDGE.*/\1/p'`
    echo "*** ${event} ***"


    if  [ "${event}" = "RISING" ]; then
        if [ -n "${GPIOSET_PID}" ]; then
            sudo kill "${GPIOSET_PID}" 2>/dev/null
        fi

        sudo gpioset --mode=signal gpiochip2 7=${SW} & GPIOSET_PID=$!

        if [ "${SW}" -eq 1 ]; then
            SW=0
         else
            SW=1
         fi
    fi
done < <(sudo stdbuf -oL gpiomon gpiochip2 6)