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文章 2024-02-07 来自：开发者社区

Linux 驱动开发基础知识——编写LED驱动程序（三）

一、LED 驱动程序编程_基于 IMX6ULL 1.字符设备驱动程序框架编写驱动程序的套路：（1）确定主设备号，也可以让内核分配 &nbs...

文章 2024-02-07 来自：开发者社区

Linux 驱动开发基础知识——认识LED驱动程序（二）

一、硬件知识_LED 原理图我们怎样去点亮一个 LED 呢？分为三步：第1步看原理图，确定控制 LED 的引脚; 第2步看主芯片的芯片手册，确定如何设置控制这个引脚; 第3步写程序; ...

文章 2024-02-07 来自：开发者社区

Linux 驱动开发基础知识——Hello驱动程序（一）

一、Hello 驱动(不涉及硬件操作) 我们选用的内核都是 4.x 版本，操作都是类似的： rk3399 linux 4.4.154 rk3288 linux 4.4.154 imx6ul linux 4.9.88 am3358 linux 4.9.168 1.如何编写驱动程序 ...

文章 2024-02-07 来自：开发者社区

Linux 驱动开发基础知识—— 具体单板的 LED 驱动程序（五）

一、怎么写 LED 驱动程序？详细步骤如下：（1）看原理图确定引脚，确定引脚输出什么电平才能点亮/熄灭 LED （2）看主芯片手册，确定寄存器操作方法：哪些寄存器？哪些位？地址是？ ...

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更新时间 2024-06-03 06:01:48

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