| In recent years,with the popularization of cars and the construction of roads,the economical intercourse of city become more frequent and the region of area that people moved is broader than ever,which produce many serious problems such as traffic jam,diffculty of destination find, lower efficiency and so on.GPS vehicle navigation system can effectively improve those problems and bring convinent service to people.It will become the basic equipment of our vehicle.Nowadays,the GPS vehicle navigation system's development is comparatively fall behind in native. Occording to the reaserching condition of our own, while by terms of the merit of our products now available, we collect lots of entertainments function to form the Chinese-style GPS vehicle navigation system.From it, we can find the mean of theory researching and marketing worth both.GPS vehicle navigation system concerns to widespread technique field. This article point to the advanced embedded system technique, basing on the platform of Microsoft's WinCE.NET and SHARP's LH7A404, researching and developing the system platform's broad support package(BSP). It is the base and key to realize the system kernel transplant as well as the appliance software of whole system. At first, we design the whole system to confirm the system components of software and hardware. Then, custom operating system kernel and analyses the BSP architecture and developing steps of software parts. Follows that, detailed developing system loader program Boot Loader and others parts of OAL. Finally,it concludes the implementation of model for the devices driver ,including interrupt analyzing of the mechanism and loading mechanism of device driver.the SD memory card driver program is mainly researched and developed。This work which introduced by the article is applied to the design of the GPS vehicle navigation system of a company in Shenzhen, furthermore,its'product have been launched to market at home, and gain the great economic benefits. |
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