#!/bin/bash

case ${1} in
	O0) GPIO=19;;
	O1) GPIO=6;;
	O2) GPIO=5;;
	O3) GPIO=22;;
	O4) GPIO=4;;
	PIN7) GPIO=7;;
	PIN8) GPIO=8;;
	*)
		echo "Output not defined" >&2
		exit 1
		;;
esac

VALUE="${2:-1}"

if [ -z "${GPIO}" ]; then
	CHIP_BASE_DIR="/sys/bus/i2c/devices/1-00${ADDR}/gpio"
	CHIP_NAME="$(ls ${CHIP_BASE_DIR})"
	CHIP_DIR="${CHIP_BASE_DIR}/${CHIP_NAME}"
	CHIP="${CHIP_NAME#gpiochip}"
	GPIO="$((${INDEX} + ${CHIP}))"
fi

if [ "${VALUE}" = "stop" ]; then
	echo "${GPIO}" > /sys/class/gpio/unexport
	exit 0
fi

if [ ! -d /sys/class/gpio/gpio${GPIO} ]; then
	echo "${GPIO}" > /sys/class/gpio/export
fi

echo "out" > /sys/class/gpio/gpio${GPIO}/direction

echo "${VALUE}" > /sys/class/gpio/gpio${GPIO}/value