linux 驱动中 访问arm 端口的方法。-linux ports arm drive access method.

基于linux系统的IO内存访问底层硬件的驱动程序。实验现象是LED灯亮。所以也是LED驱动程序。不是调用函数接口-IO memory based on the Linux system to access the underlying hardware driver. The experimental phenomena are LED lights. LED driver. Instead of calling the function interface

rpi_hal 树莓派的IO控制 pascal版代码-# rpi_hal Free Pascal Hardware abstraction library for the Raspberry Pi This Unit, with more than 3000 Lines of Code, delivers procedures and functions to access the rpi HW I2C, SPI and GPIO: Just an excerpt of the