#!/bin/sh # ARM only. # https://raspberrypi.stackexchange.com/questions/56373/is-it-possible-to-get-the-state-of-the-leds-and-gpios-in-a-qemu-emulation-like-t/69267#69267 set -e cd /sys/class/gpio echo 480 > export echo 481 > export echo 482 > export echo 488 > export echo 496 > export echo out > gpio480/direction echo out > gpio481/direction echo out > gpio482/direction echo out > gpio488/direction echo out > gpio496/direction v=1 while true; do echo $v > gpio480/value echo $v > gpio481/value echo $v > gpio482/value echo $v > gpio488/value echo $v > gpio496/value if [ $v -eq 1 ]; then v=0 else v=1 fi sleep 1 done