Research And Realization Of Embedded Web Server Based On μC/OS-Ⅱ

With the coming of network and information era, to enable embedded system be connected with network has already become inevitable trend.The author analyzes several ways of embedded internet technology nowadays, do a deeply research about this technology especially the disadvantage of high cost. According to low cost and resources usage principle, a new kind of embedded Web Server based on μC/OS-Ⅱ+TCP/IP is developed in this paper.With μC/OS-Ⅱ as operating system, LwIP as TCP/IP stack,the development is under Skyeye(a kind of Atmel91X40 hardware simulator platform) in this paper.Paper gives us a detailed report of port about μC/OS-Ⅱ and LwIP ,and creates a simple file system and Shell.Six commands are achieved in Shell, their aims are: command help, time display , state of system, list of files in ROM , ip configuration and start of Web Server.After the analyse about HTTP protocol in depth, to display static web is successful achieved. This paper also shows us how to realize remote monitor and control about embedded system devices, and how to support form submission in Web Server.When Web Server is tested in a real situation, the author adds three sorts of link in web page so that three different situations could be tested completely.Through the network protocol testing software Ethereal, all the packages which are transferred between client and server are showed clearly on the screen. Results of network testing experiment prove us that Web Server developed in this paper works well in the real situation. It could receive and response correctly.Realization of this embedded Web Server based on μC/OS-Ⅱ shows us a new way to achieve embedded internet technology, gives us a good example about reduce costs and resources usage. It also provides a efficient technical support on remote monitor and control, device diagnosis ,and embedded devices communication with network.