With the analysis of current embedded Internet technique, this paper describes the design of a multitask embedded Internet system platform base on high- performance 8- bit ATmega128 MCU and Ethernet controller RTL8019AS with uC/OS- II RTOS and LwIP TCP/IP stack.
With the latest research and development in embedded-Internet technology,this paper summarizes the embed-ded Internet-working technology schemes,analyzes the difference of embedded TCP/IP protocol and standard TCP/IP protocol and gives the basic designed principle. Also in this paper,the communication protocol hierarchy,general archi-tecture and each protocol's main processes are discussed in embedded TCP/IP protocol.
This paper presents the basic principle of embedded internet system and a new network application technology-EMIT(Embedded Micro Internetworking Technology). Combined with the practical instance, it analyzes the system structure, style of networking and the modules of development based on EMIT.