Hi, > Simple test to demonstrate failure: > > [root@RPi3-1 ryniker]# echo 23 >/sys/class/gpio/export > bash: echo: write error: Invalid argument > [root@RPi3-1 ryniker]# Just the numbering is different for some reason. raspberrypi kernel: kraxel@pitivi ~# cat /sys/class/gpio/gpiochip0/base 0 mainline kernel: kraxel@pi-two ~# cat /sys/class/gpio/gpiochip458/base 458 cheers, Gerd _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx