#!/bin/sh
GPIOCHIP=0
BASE=$(cat /sys/class/gpio/gpiochip${GPIOCHIP}/base)
NGPIO=$(cat /sys/class/gpio/gpiochip${GPIOCHIP}/ngpio)
max=$(($BASE+$NGPIO))
gpio=$BASE
while [ $gpio -lt $max ] ; do
	echo $gpio > /sys/class/gpio/export
	[ -d /sys/class/gpio/gpio${gpio} ] && {
		echo in > /sys/class/gpio/gpio${gpio}/direction
		echo "[GPIO${gpio}] value $(cat /sys/class/gpio/gpio${gpio}/value)"
		echo ${gpio} > /sys/class/gpio/unexport
	}
	gpio=$((gpio+1))
done