基于ARM9的Linux嵌入式字符驱动GPIO设计

摘要

为了实现嵌入式linux的移植和开发，本文采用了ARM9完成了的嵌入式Linux字符驱动开发，为后续更复杂的开发奠定了基础。本文介绍了设计字符驱动开发的基本流程，完成了linux的移植以及驱动程序的开发，并且利用LED和蜂鸣器的开断来验证字符驱动开发的效果。同时，为了使验证更加直观和便捷，引入了图形化界面Q4的应用程序开发了友好的测试界面。实验测试通过对触摸屏的操作，顺利的点灭LED以及开断蜂鸣器，从而验证了字符驱动开发在系统中的成功应用。%In order to complete the transplant and development of Linux, this paper come true the development of the characteristic driver based on the ARM9 ,which can get a base for the next complex development of embedded Linux. It introduces the generate developed process of characteristic driver, finish the transplant and coding, verifies the driver by the LED and buzzer. Meanwhile, it adopt the Q4, which is a good software development for GUI, to design a test GUI base on touching screen. It smoothly turns on or off the LED and buzzer by the screen in the testing, so it successfully verifies the developed procedure of the characteristic driver in the paper.