Kontron KTAM3874-pITX - Manual (Page 32)

KTD-S0057-I Page 28 DebianTM Linux® BSP
KTAM3874/pITX Software Guide
6.9 Sysfs Support
Alternative to the KEAPI interface you can use Sysfs to manipulate the GPIOs or the backlight. The example
reads the content and direction of GPIO0 (GP0[10]) and sets the direction to 'output' and the content to
'high'.
Comment:
root@ubuntu:# echo 10 > /sys/class/gpio/export enable GP0[10] access
root@ubuntu:# cat /sys/class/gpio/gpio10/value read content
1 value = high
root@ubuntu:# cat /sys/class/gpio/gpio10/direction read direction
in direction = input
root@ubuntu:# echo "out" > /sys/class/gpio/gpio10/direction set direction to output
root@ubuntu:# echo 1 > /sys/class/gpio/gpio10/value set content to high
root@ubuntu:# echo 10 > /sys/class/gpio/unexport disable GP0[10] access