我写的ARM PS2驱动程序，使用普通GPIO口模拟PS2协议，可直接驱动键盘、条码找描枪等设备，并将从键盘、条码扫描枪等输入的信号通过UART口传至PC机-I write ARM PS2 driver, I use ordinary GPIO simulation PS2 agreement can be directly driven keyboard, bar code depiction find guns and other equipment, and from the keyboa