使用/sys/class/gpio对A31S的GPIO通过ADB进行设置

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在XP下，连接开发板，进入CMD模式

1、C:\Documents and Settings\Administrator>d:

2、D:\Program Files\sdk\platform-tools>adb devices

List of devices attached
20141125 device

3、D:\Program Files\sdk\platform-tools>adb shell
root@fiber-a31st:/

4、root@fiber-a31st:/ # cd /sys/class/gpio
cd /sys/class/gpio
5、root@fiber-a31st:/sys/class/gpio # for i in gpiochip* ; do echo `cat $i/label`:
`cat $i/base` ; done
o echo `cat $i/label`: `cat $i/base` ; done <
GPA: 0
GPE: 100
GPF: 119
GPG: 127
GPH: 148
GPL: 181
GPM: 192
axp_pin: 202
GPB: 30
GPC: 40
GPD: 70
6、root@fiber-a31st:/sys/class/gpio # echo 192 > /sys/class/gpio/export
echo 192 > /sys/class/gpio/export
7、root@fiber-a31st:/sys/class/gpio # echo out > /sys/class/gpio/gpio192/direction
gpio/gpio192/direction <
8、root@fiber-a31st:/sys/class/gpio # echo 1 > /sys/class/gpio/gpio192/value
echo 1 > /sys/class/gpio/gpio192/value
9、root@fiber-a31st:/sys/class/gpio # echo 0 > /sys/class/gpio/gpio192/value
echo 0 > /sys/class/gpio/gpio192/value
10、root@fiber-a31st:/sys/class/gpio # echo 1 > /sys/class/gpio/gpio192/value
echo 1 > /sys/class/gpio/gpio192/value
root@fiber-a31st:/sys/class/gpio #

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