#!/bin/bash
# just pass the GPIO number in from pine64_pins.html
# switches the specified GPIO to high for 1 second
# then back to low and removes it from the list of
# system controlled GPIO pins
#
# example, test pin 16, which is labled as Pi GPIO 23
# ./test.sh 77

gpio=$1

echo $gpio > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio$gpio/direction
echo "1" > /sys/class/gpio/gpio$gpio/value
sleep 1
echo "0" > /sys/class/gpio/gpio$gpio/value
sleep .1
echo $gpio > /sys/class/gpio/unexport