基于s3c2440和linux下的按键中断代码，含消抖代码、异步触发、读写阻塞等机制，是极好的中断驱动程序的范例。使用EINT2(GPF2)-Based on the S3C2440 and the keys under linux interrupt code, including elimination Buffeting code, asynchronous trigger, read-write blocking mechanisms, such as an excellent exam