Abstract:

In order to improve the stability of dual processors communication，reduce cost and ensure the portability，the paper applied TCP/IP to serial port to process the communication among processors by solving the issue of data exchange between upper layers protocol stack and serial port driver，and the issue of ethernet data transmission via physical serial port. The paper emphasized to analyze the implementation principle of the communication mode，introduced upper layer protocol stack interface， serial port driver，serial port framing and the detailed implementation process of the communication.

Key words: serial communication, TCP/IP, ethernet, Linux