单片C语言程序，对RS485的通信操作例程，已经调试通过，可直接移植使用。-Monolithic C language program, the RS485 communication operation routines have been debugging through, can be transplanted directly to use.

串口232汇编接收发送原代码,接收协议可以根据自己的需要更改-Serial port 232 receiver to send the original compilation of code, to receive the agreement can change according to their own needs