Realization Of The TCP/IP Protocol Stack Based On MCS-51 MCU

This thesis researches a data transfer technology in network communication based on Embedded TCP/IP MCU, and develops an application system based on the MCU. The system integrates TCP/IP Protocol into Micro Chips and realizes data transfer between wireless model and Internet via wireless telecommunication modules. The MCU Board is one of basic components of User Terminal and the communication connection is built between Network and Remote Data Servers.A popular and powerful MCU, ST uPSD3200, is used in this system. The new MCU includes PSD (Programmable System Device) and 8032 Micro Controller, which can match the requirements on system resources and minimize the periphery circuits. In order to make development more convenient, Insight ME-3200(simulator) and MedWin(IDE) are used here.When TCP/IP stack is realized in MCU, the difficulties on technology are as the following: How to complete the complex protocols and status switchers on limited resources of MCU, and at the same time, the real time functionality is required in order to exchange IP data packets on internet. Because of complexity of TCP/IP and limited resources of MCU, how to predigest TCP/IP is the emphasis in this thesis.In order to make the program transplant into other systems, all the codes were done in C language in hierarchical structure. From bottom top is that: IP stack, TCP stack, and Application.The system traces and analyses communication data with Sniffer and checks whether the stack program is correct or not.