页次: 1
可以用sysfs操作GPIO
#echo 192 > /sys/class/gpio/export #导出 PG0, GREEN
#ls /sys/class/gpio/
export gpio192 gpiochip0 unexport
#ls /sys/class/gpio/gpio192/
active_low direction subsystem/ value device/ power/ uevent
#echo "out" > /sys/class/gpio/gpio192/direction #设置为输出
#echo 0 > /sys/class/gpio/gpio192/value #亮灯
#echo 1 > /sys/class/gpio/gpio192/value #灭灯
#echo "in" > /sys/class/gpio/gpio192/direction #设置为输入
#cat /sys/class/gpio/gpio192/value #读取电平
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页次: 1