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本文讲解 pinctrl 子系统和 gpio 子系统的 API，以及使用示例。传统的配置 pin 的方式就是直接操作相应的寄存器，但是这种配置方式比较繁琐、而且容易出问题(比如 pin 功能冲突)。pinctrl 子系统就是为了解决这个问题而引入的，pinctrl 子系统主要工作内容如下...

Linux内核驱动之GPIO子系统(一)GPIO的使用【转】

转自：http://blog.csdn.net/tommy_wxie/article/details/9427047 一概述 Linux内核中gpio是最简单，最常用的资源(和 interrupt ,dma,timer一样)驱动程序，应用程序都...

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更新时间 2024-01-08 11:10:06

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