使用i.MX8QM遇到GPIO操作的问题在i.MX6中可以用如下方法操作GPIO
echo 17 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio17/direction
echo 1 > /sys/class/gpio/gpio17/value
我试了在I.MX8中也可以这样操作,GPIO没起作用,请问哪里操作错了?
另外GPIO的序号到底如何计算的?
For your reference:
How to set GPIO state
Accessing GPIO From UserSpace
https://community.nxp.com/docs/DOC-345322