The Study Of Real-time Embedded System And The Realization Of Gateway Board

This item, a basic part of SDH communication product, is to work as a normal router, that is, to take on the operation of transmitting data packets in special network. This item is a typical and integrated embedded system.Embedded system has been speeded all kinds of application fields, such as aviation, space flight, martial, consume products, instrument, serial control systems and so on. Therefore, I gave emphasis to study embedded system and embedded real-time operation system in process of exploitation.This thesis introduces the technical basis and design of the item. The first chapter discusses the concept of embedded system and explore mode as a whole; the second chapter recommends the feature of real-time operation system, especially the pSOSystem, the basic system of this item; the third part gives the principle of gateway; the forth part lists the item process guideline, and then introduces the design of hardware and software and item test procedure, and at last analyzes the improvement plan according to test. My main task was to put up system frame and finish software module of communication with main board. Meanwhile, I participated in work of writing BSP as assistant. And the design of hardware circuit has done by other hardware engineers.Also this thesis roughly evaluates the performance of this system, and gives my advice of updating or improving this item.