cd /sys/class/gpio/
导出一个gpio资源到用户空间
echo 11 > export
设置gpio模式
cd gpio11
echo out > direction
设置value
echo 1 > value
具体演示如下图:
效果图:
灭灯
echo 0 > value
来个脚本
#!/bin/sh
echo "Hello,led"
if ;then
echo "gpio11 is created!"
else
echo 11 > /sys/class/gpio/export;
fi
echo out > /sys/class/gpio/gpio11/direction
while echo "hello"
do
echo 1 > /sys/class/gpio/gpio11/value
sleep 0.25
echo 0 > /sys/class/gpio/gpio11/value
sleep 0.25
done
echo 0 > /sys/class/gpio/gpio11/value