Application And Research On Network Technology In Embedded System

With the increasing development of Internet hardware and software, the number of network user is rising rapidly. Currently the people use the general computer to link network each other. At the same time, various appliances > PDA> apparatus and instrument > data collecting and control equipment in the industry manufacture are gradually linking with the network to share vast information resource in the Internet.This paper studies the application of the network technology in specified embedded system with the really project, presents the design schema of the specified embedded system and the Ethernet interface based on the embedded system, described all parts of the embedded system in detail. Based on the research of the performance-, resource of the CPU-W77E58 and the used operation system and compiler, the circuit of the data-collected system terminal's memory management> LCD display, FPGA are designed and realized.On the basis of the research of the kinds and the configuration principle of NIC in depth, this paper studies that the whole parts of the NICM9008, and analyse that the internal principle of the NIC, design and implement the circuit of the Ethernet Interface. On these bases, NIC device driver and correlative protocol processing program are developed. Finally, this paper puts forward and discusses that a small embedded TCP/IP Protocol Stack be used in the embedded system , discusses the design method of the Stack and analyse in detail that the Stack's faction > interface and all API function.