The Research Of Internet Connecting Technology Based On Embedded System

With the development of communication technic, network technic and semiconductor technic. Internet technic is filtering to Industry controlling and the designing of embedded system gradually. Achieving mutual Internet the hotspot domain and the important way of embedded system development. If MCU can join with Internet, the information could be transmitted cheaply to everywhere of the world.We designed the framework of the hardware and software ,detail introduced the designing process of embedded industry control system based on uC/OS- II and uIP and designed the frame work which could be used for most embedded devices. Software facet, we analyse RTOL uC/OS- II and realize the principle of kernel. According to the character of the MCU, transplanting OS to W78E516.Because of using Ethernet interface chip, we introduce the drivers in the detail. As uC/OS- II doesn't has the function of network ,we embedded the tidy tcp/ip protocol stack in μC/OS-Ⅱ ,as well as we discuss how to achieve TCP/IP protocol stack in the detail. Hardware facet, we explicate the Ethernet interface chip' configuration, lead, and discuss receive information package in the detail. We designed a network control system, which is made up of 51 series MCU, Ethernet interface chip and interface circuits.After several months' designing and testing of hardware and software, we have achieved the aim. The accomplishment of this paper is a good foundation for the compatible system to utilize this technology and at the same time it has a great value of reference.