GPIO操作

来源：互联网发布：手机淘宝怎样使用花呗编辑：程序博客网时间：2024/06/06 09:57

GPIOZ_0 GPIONUM 14 green
GPIOZ_1 GPIONUM 15 blue
GPIOAO_14 GPIONUM 135 red

可以手动调试申请一个pin：
echo GPIO_NUM > /sys/class/gpio/export
成功以后
在sys/class/gpio 创建目录 gpioGPIO_NUM
cd /sys/class/gpio/gpioGPIO_NUM
ls:
active_low
direction
edge
power
subsystem
uevent
value

向 direction 写
1 high 输出高电平
2 low 低电平
3 in 输入

36,37:

echo 36 > /sys/class/gpio/export
echo high > /sys/class/gpio/gpio36/direction

red:

echo 135 > /sys/class/gpio/export
cd /sys/class/gpio/gpio135/
echo out > direction //输出.

//操作步骤：设置GPIO节点 gpio14, gpio15, gpio135

echo 14 > /sys/class/gpio/export
echo 15 > /sys/class/gpio/export
echo 135 > /sys/class/gpio/export

=====================================================
cd /sys/class/gpio/gpio14
root@OomiStreamer:/sys/class/gpio/gpio14 # ls
active_low
direction
power
subsystem
uevent
value
====================================================================
echo low > /sys/class/gpio/gpio14/direction //绿色
echo high > /sys/class/gpio/gpio14/direction //关闭绿色

echo low > /sys/class/gpio/gpio15/direction //蓝色
echo high > /sys/class/gpio/gpio15/direction //关闭蓝色

echo low > /sys/class/gpio/gpio135/direction //红色
echo high > /sys/class/gpio/gpio135/direction //关闭红色

=================================================
蓝色+红色=粉色
echo high > /sys/class/gpio/gpio14/direction && echo low > /sys/class/gpio/gpio15/direction && echo low > /sys/class/gpio/gpio135/direction
蓝色+绿色=青色
echo low > /sys/class/gpio/gpio14/direction && echo low > /sys/class/gpio/gpio15/direction && echo high > /sys/class/gpio/gpio135/direction
红色+绿色=黄色
echo low > /sys/class/gpio/gpio14/direction && echo high > /sys/class/gpio/gpio15/direction && echo low > /sys/class/gpio/gpio135/direction

红绿蓝=白色
echo low > /sys/class/gpio/gpio14/direction && echo low > /sys/class/gpio/gpio15/direction && echo low > /sys/class/gpio/gpio135/direction

关闭红绿蓝
echo high > /sys/class/gpio/gpio14/direction && echo high > /sys/class/gpio/gpio15/direction && echo high > /sys/class/gpio/gpio135/direction

//测试:

GPIODV_27: 92
echo 92 > /sys/class/gpio/export
echo high > /sys/class/gpio/gpio92/direction //亮
echo low > /sys/class/gpio/gpio92/direction

GPIOY_6: 101
echo 101 > /sys/class/gpio/export
echo high > /sys/class/gpio/gpio101/direction
echo low > /sys/class/gpio/gpio101/direction

GPIOX_18: 130
echo 130 > /sys/class/gpio/export
echo high > /sys/class/gpio/gpio130/direction
echo low > /sys/class/gpio/gpio130/direction

GPIOX_19 : 131
echo 131 > /sys/class/gpio/export
echo high > /sys/class/gpio/gpio131/direction
echo low > /sys/class/gpio/gpio131/direction

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