Linux单板驱动程序的相关内容

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？ ...

文章 2022-12-13 来自：开发者社区

嵌入式linux/鸿蒙开发板(IMX6ULL）开发（三十五）具体单板的按键驱动程序(查询方式)

1.具体单板的按键驱动程序(查询方式)1.1 GPIO操作回顾参考章节《第四章普适的GPIO引脚操作方法》、《第五章具体单板的GPIO操作方法》。1.2 百问网IMX6ULL的按键驱动程序(查询方式)1.2.1 先看原理图确定引脚及操作方法平时按键电平为高，按下按键后电平为低。按键引脚为GPIO5_IO01、GPIO4_IO14。注意：视频里使用QEMU来做实验，QEMU里的按键平时为低电....

文章 2022-12-13 来自：开发者社区

嵌入式linux/鸿蒙开发板(IMX6ULL）开发（二十七）具体单板的LED驱动程序

以下板子选用的内核都是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 4.9.1681.1 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LED②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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