说明:
ｇｐｉｏ的ＭＡＰ关系 yk0--pioA7 yk1--pioA5 yk2--pioA9 yk3--pioA3 yk4--pioA1 yk5--pioA8 (端子从左－－＞右 QD--pioA21内部总启动信号）
1 配置gpio:
root@sama5d3-linux:~ echo 8 > /sys/class/gpio/export
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/export
root@sama5d3-linux:~ echo 3 > /sys/class/gpio/export
root@sama5d3-linux:~ echo 9 > /sys/class/gpio/export
root@sama5d3-linux:~ echo 5 > /sys/class/gpio/export
root@sama5d3-linux:~ echo 7 > /sys/class/gpio/export
２ 配置ＧＰＩＯ方向:
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA8/direction
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA1/direction
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA3/direction
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA9/direction
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA5/direction
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA7/direction
３ 配置ＧＰＩＯ初始化电平(继电器全部关断):
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA8/value
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA1/value
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA3/value
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA9/value
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA5/value
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA7/value
4 配置QD((继电器电源关断)):
root@sama5d3-linux:~ echo 21 > /sys/class/gpio/export
root@sama5d3-linux:~ echo out > /sys/class/gpio/pioA21/direction
root@sama5d3-linux:~ echo 1 > /sys/class/gpio/pioA21/value
5 驱动继电器闭合((条件首先QD要闭合)):
root@sama5d3-linux: echo ０ > /sys/class/gpio/pioA21/value
root@sama5d3-linux: echo ０ > /sys/class/gpio/pioA８/value //ｙｋ０合
root@sama5d3-linux: echo 1 > /sys/class/gpio/pioA８/value //ｙｋ０ 关
root@sama5d3-linux: echo ０ > /sys/class/gpio/pioA１/value //ｙｋ１合
root@sama5d3-linux: echo 1 > /sys/class/gpio/pioA１/value //ｙｋ１关