sama5d3 环境检测 gpio--yk测试

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