ssd4练习六，相当有用的代码！如果想找个参考，就来-6 ssd4 practice, very useful code! If you want to find a reference, then see whether

本程序实现USART异步方式连续接收数据并进行奇校验，在4M的主频下波特率为9600。-USART asynchronous implementation of this procedure to receive data and continuous odd parity, baud rate, under the dominant frequency in the 4M 9600.