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补充 menuconfig 配置.

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Signed-off-by: ithink.chan <chenyang@autoai.com>
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ithink.chan 2020-04-28 17:48:38 +08:00
parent 397923da21
commit a4d8b0a406
1 changed files with 6 additions and 0 deletions
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6
Software/Development/OperatingSystem/Linux/User/Modules/GPIO/用户态_GPIO_操作指南.md
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@ -1,5 +1,11 @@
# 用户态 GPIO 操作指南 # 用户态 GPIO 操作指南
首先，看看系统中有没有“/sys/class/gpio”这个文件夹。如果没有请在编译内核 make menuconfig 的时候加入：
```sh
Device Drivers-> GPIO Support ->/sys/class/gpio/… (sysfs interface)
```
## 获取 GPIO 范围 ## 获取 GPIO 范围
### 通过 kernel debug 获取 ### 通过 kernel debug 获取