嵌入式LINUX数字矩阵键盘驱动研究

Research of Matrix Keyboard Device Driver Based on Embedded Linux

本文主要介绍了基于嵌入式Linux的矩阵键盘驱动程序设计的方法。在实践中选择PSoCCY8C24794设备对键盘进行了系统的研究和开发,综合利用了时钟模块和通用异步收发模块资源,实现了键盘设置时间,时钟和闹钟的功能,在关键技术上有所突破和创新,最后归纳了开发嵌入式Linux键盘驱动程序的核心思想。

This paper mainly introduces a scheme of matrix keyboard device driver based on embedded Linux.we choose the PSoC CY24794 device to study and develop a keyboard,achieving the function of setting clock time and and running an alarm clock.Two timer modules and a UART module resources has been used in the process,making breakthroughs in some key technologies and innovation.In the end,the core idea on the development of device drivers under embedded Linux is concluded.