Asian Basic and Applied Research Journal

The combination of embedded technology and the network technology will enhance the flexibility of the embedded devices greatly with the development of the embedded system. The Web browser becomes a standard interface in order to manage the embedded devices. This is done by accessing to the embedded web server after the embedded device connected to the internet. The Ethernet is widely used as a data link layer technology for the internet. The TCP/IP protocol can be realized by interfacing the embedded equipment to the Ethernet. The embedded system is the resource restricted while any of the TCP/IP or the HTTP protocol is too large in order to be implemented. The embedded system does not have enough storage resources in order to implement a completed protocol stack, so a lightweight IP (LWIP) is used. The LWIP stack is an open source implementation of the TCP/IP stack which is developed specifically in order to reduce the resource usage while maintaining a full-scale TCP/IP stack. The dynamic web is realized by the common gateway interface (CGI), a standard of connecting an external application to the server. It is a software module in the web server, and it can execute the script which is stored in the server. This research paper describes the hardware and the software constructs and the design of the CGI. The hardware is implemented on the Texas LM 3S6965 ARM board, having an in-built Analog to Digital Converter (ADC), the Ethernet controller which is connected on the Local Area Network (LAN) in between the two laboratories where the monitoring, supervising and the controlling of electrical appliances is done. A Graphical User Interface (GUI) is made available at the client end in order to send the request/acknowledgement through the web page which is created on his/her desktop. The communication is established.