用485实现单片机之间的串行通信。 主机部分发送从机地址，等待从机响应，从机准备好就发数据,发完就接收从机的响应，接受成功就跳出循环，否则重发 系统时钟为11.059MHZ时，设定串口波特率为9600bit/s串口接收中断允许，发送中断禁止，设定定时器中断允许-With between 485 to achieve single-chip serial communication. Host part of the address sent from the machine, waiting