sysfs 控制gpio

按照下面的命令点亮及熄灭LED

pi@raspberrypi:/sys/class/gpio $echo 26 > export
pi@raspberrypi:/sys/class/gpio $ cd gpio26
pi@raspberrypi:/sys/class/gpio/gpio26 $ ls
active_low device direction edge power subsystem uevent value
pi@raspberrypi:/sys/class/gpio/gpio26 $ cat direction
out
pi@raspberrypi:/sys/class/gpio/gpio26 $ cat value
1
pi@raspberrypi:/sys/class/gpio/gpio26 $ echo 0 >value
pi@raspberrypi:/sys/class/gpio/gpio26 $ cat value
0

posted @ 2019-05-29 22:13  ahuo  阅读(183)  评论(0)  编辑  收藏  举报