The Research And Implementation Of TCP/IP Protocol Embedded In Microcontrollers

With the rapid development of the network, it is necessary to use internet to control the electronic equipment. Now, because many electronic equipment can't transmit data by internet, the network transmission equipment is applying abroad.The using internet to control the equipment is first proposed in this paper, and then the necessity of the network in equipment is emphasized. After that several kinds of realizing methods of network in equipment are discussed, especially the Microcontrollers control network card to realize the transmission by internet. In chapter 2, the TCP/IP protocol flame is simply studied, and the ARP, IP, UDP and TCP protocol are mainly discussed. The theory block of TCP/IP protocol is provided in chapter 3, and how to programme the driver of RTL8019AS network card is mainly discussed. In chapter 4, in the case of the TCP/IP protocol, the grogramme flow chart with C51 is programmed on the condition of consideration all resource of microcontrollers. In chapter 5, the UDP and TCP protocol are programmed by using the windows Socket function, then the flat of test programme in windows is provided. In chapter 6, the hardware interface and test methods of the transmission equipment is given. Finally, we reach a conclusion.This microcontroller systems embedded TCP/IP protocol is proposed in the paper has many advantages, such as lower cost, fewer component, smaller area of hardware, higher transport speed, and easier to use. The system is fit for all of the network transmission systems, and also adapted to data collecting and data monitoring.