Linux操作gpio 的相关内容

文章 2023-02-25 来自：开发者社区

Linux驱动开发——（Linux内核GPIO操作库函数）gpio（1）

文章目录Linux内核GPIO操作库函数int gpio_request(unsigned gpio, const char *label)void gpio_free(unsigned gpio)int gpio_direction_output(unsigned gpio, int value)int gpio_direction_input(unsigned gpio)int gpio_s....

文章 2016-03-25 来自：开发者社区

Linux 下操作gpio（两种方法，驱动和mmap）

目前我所知道的在linux下操作GPIO有两种方法: 1．编写驱动,这当然要熟悉linux下驱动的编写方法和技巧，在驱动里可以使用ioremap函数获得GPIO物理基地址指针,然后使用这个指针根据ioctl命令进行GPIO寄存器的读写，并把结果回送到应用层。这里提供一点程序片断供大家参考: [cpp] view plain copy ...

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更新时间 2023-11-08 16:49:11

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