#!/bin/bash export PATH=/sbin:/bin:/usr/sbin:/usr/bin modprobe spi_bcm2708 || exit chmod g+rw /dev/spidev0.? chgrp plugdev /dev/spidev0.? for port in 23 24 25; do echo $port > /sys/class/gpio/export; done echo out > /sys/class/gpio/gpio24/direction echo 1 > /sys/class/gpio/gpio24/value chmod g+rw /sys/class/gpio/gpio24/value chgrp plugdev /sys/class/gpio/gpio24/value