Embedded Real-time Network Communication Systems And Applications

Embedded system is based on application-centered hardware design and software development facing application. Embedded systems are widely applied in such areas as manufacture, process control, communication, instrument, and consumer product. The development of Internet is causing the demand of integration of embedded system and Internet. For this reason, the network communication in embedded system is researched and designed in this paper and then the application of remote data acquisition is realized.First, a hardware system based on embedded CPU ARM is built. The system hardware circuit including two proportions-main circuit and peripheral support circuit, is designed. The main circuit includes system memory cell, debugger interface and so on. The peripheral support circuit includes LCD interface, Input/Output interface, network interface and system power supply.Second, a network environment based on real-time operation system is built. It contains two proportions. One is to apply RTOS in ARM CPU, the process of posting RTOS ?C/OS-II to ARM is expatiated The other is to adding an embedded TCP/IP protocol stack touC/OS-II for its multi-task/user supportthe detailed realization method is given.Finally, based on this embedded hardware&software flat, a detailed analysis of two kinds of Internet communication modes-C/S and B/S, is presented.The method of remote data acquisition is applied and experimented using web server mode and client/server mode separately.