可以实现PS2键盘 定时中断 UART串口通信-PS2 keyboard can be achieved timer interrupt UART serial communication

基于UCOSII思想写的STM32测试工程，编译环境为IAR540，包括GPIO测试，串口测试，iic测试，ps2测试，ad测试，lcd测试等。-UCOSII thinking based STM32 written test project, the compiler environment for IAR540, including GPIO test, serial test, iic test, ps2 testing, ad testing, lcd testing.