IO0 操作即为操作GPIO11

[sunzhguy]

http://docs.widora.io/gpio
操作IO0 输出高低电平 ：echo 11 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio11/direction
echo 1 > /sys/class/gpio/gpio11/value
echo 0 > /sys/class/gpio/gpio11/value。