Research On CAN Communications Based On Embedded Web Server

As the automation degree of the corporation becomes higher, Field Bus technique was widespread availability in Industrial process;At the meantime,Ethernet technique play a more and more important role during the corporation informational process. Along with the informational degree of the corporation increasing, the related research have very important actual means and extension value to carry out that the corporation information becoming a intranet interconnects with the Field Bus, and already large investigation hotspot now.Corporation information intranet has singularity standard, take Ethernet as main block. But Field Bus has a great variety of standards. Based on analyzed the present status of the Field Bus technic seriously, in this article we choose CAN Bus. The connection between information network and controlling network is realized by TINI platform of Dallas company. In this basic, we also present a way to connect the information between bottom controlling network and upper network:Using construct a dynamic Web page on embedded platform to monitor the Field data in CAN Bus.In this paper, the choice of hardware platform and the design and realize method of the software are discussed. About hardware platform,evaluation board based on microcontroller DS80C400 was chosen, it integrate a CAN controller and an Ethernet controller.About software platform,the TINI platform was chosen,with JavaServlets,it realise the embedded Web server. Specifically introduced the design and development of CAN controller initialization,sending and receiving CAN data frame, dynamic Web page and so on. At last, finish the loading of programme , running of Web server and debugging.