Design And Implement The Device Driver Module Of The Embedded Operation System

With the development of TETRA digital trunking communication in our country, more and more platforms meeting emergency prefer the TETRA system. Recently, the TETRA digital trunking terminals, which are made by foreign manufactures, are too expensive, so this will restrict the development of the TETRA system in China. Therefore, it is very important to develop TETRA digital trunking terminal which has independent intellectual property right.This thesis sums up the TETRA trunking communication system and its characteristic, and the general software and hardware framework of TETRA digital trunking terminal. With the theory of software engineering and the examples of the Virtual Com driver and Encoder driver, expatiated on the flow of driver developing from the aspects of the driver design, the code implement and the module test. The Volume Control module illustrates how to develop API. The image of Windows CE operation system is made by the Board Support Package in Platform Builder. The image is downloaded to the sample of TETRA digital trunking terminal to update the equipment. In the sample test process, the Windows CE operation system works well and satisfies the design requirement completely.