Difference between revisions of "GPIO/zh"
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[[GPIO|English]] | [[GPIO|English]] | ||
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| + | ===S5P4418/S5P6818下计算Linux gpio索引号的方法=== | ||
| + | 看管脚定义，共有GPIOA ～ GPIOD 4 组，<br/> | ||
| + | 用以下命令看GPIO针脚<br/> | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | #/bin/sh | ||
| + | cd /sys/class/gpio | ||
| + | for i in gpiochip* ; do echo `cat $i/label`: `cat $i/base` ; done | ||
| + | </syntaxhighlight> | ||
| + | 在T2上输出 | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | nxp-gpio.0: 0 | ||
| + | nxp-gpio.4: 128 | ||
| + | nxp-gpio.5: 160 | ||
| + | nxp-gpio.1: 32 | ||
| + | nxp-gpio.2: 64 | ||
| + | nxp-gpio.3: 96 | ||
| + | </syntaxhighlight> | ||
| + | 每一个label表示一组，上面是显示6组，<br/> | ||
| + | 那么，对应的就是<br/> | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | nxp-gpio.0: 0 -> GPIOA | ||
| + | nxp-gpio.4: 128 -> GPIOE ->AliveGPIO3 | ||
| + | nxp-gpio.5: 160 -> GPIOF ->AliveGPIO5 | ||
| + | nxp-gpio.1: 32 -> GPIOB | ||
| + | nxp-gpio.2: 64 -> GPIOC | ||
| + | nxp-gpio.3: 96 -> GPIOD | ||
| + | </syntaxhighlight> | ||
| + | 每一组之间差32，是通过cat gpiochip0/ngpio查看的 | ||
Revision as of 03:30, 20 March 2019
S5P4418/S5P6818下计算Linux gpio索引号的方法
看管脚定义，共有GPIOA ～ GPIOD 4 组，
用以下命令看GPIO针脚
#/bin/sh cd /sys/class/gpio for i in gpiochip* ; do echo `cat $i/label`: `cat $i/base` ; done
在T2上输出
nxp-gpio.0: 0 nxp-gpio.4: 128 nxp-gpio.5: 160 nxp-gpio.1: 32 nxp-gpio.2: 64 nxp-gpio.3: 96
每一个label表示一组，上面是显示6组，
那么，对应的就是
nxp-gpio.0: 0 -> GPIOA nxp-gpio.4: 128 -> GPIOE ->AliveGPIO3 nxp-gpio.5: 160 -> GPIOF ->AliveGPIO5 nxp-gpio.1: 32 -> GPIOB nxp-gpio.2: 64 -> GPIOC nxp-gpio.3: 96 -> GPIOD
每一组之间差32，是通过cat gpiochip0/ngpio查看的
