M的部落格

前言

為了要手動在terminal下操作gpio。

Command list:

path:

/sys/class/gpio

extract the target gpio: (ex gpio 0-6)

echo 6 > /sys/class/gpio/export

set pin direction:

echo "in" > /sys/class/gpio/gpio6/direction

echo "out" > /sys/class/gpio/gpio6/direction

set pin value:

echo 1 > /sys/class/gpio/gpio6/value

echo 0 > /sys/class/gpio/gpio6/value

 

reference:

http://falsinsoft.blogspot.tw/2012/11/access-gpio-from-linux-user-space.html