基于ARM9的LINUX下的按键驱动程序，代码中有详细的注释，对于在此基础之上的二次开发或者是直接调用都非常方便！-ARM9 based LINUX keys under the driver, a detailed code of the Notes for the foundation of the second development is a direct call or very convenient!

基于arm9 TX2440的linux下的按键驱动开发，包含测试和驱动源码，在其上已经测试通过。-Based on arm9 TX2440 buttons under the linux driver development, including testing and driver source code, has been tested in its