Based On Gsm Terminals And Embedded Systems Software Design And Implementation

A mobile telephone software is researched in my dissertation, which is composed of two parts: protocol software and application software. At first, the structure of hardware and software in the system is presentation. Because software design is the main task in this thesis, it is particularly introduced software structure, the main point is the MMI construction and the DRIVER construction, and analyze the core of the software system, namely the embedded real time operated system. According to the characters of the mobile phone, I analyze how to construct and realize the mechanism of the message processing and transferring emphatically. After elementary understanding of mobile phone's framework, the design of man-machine interface application and protocol software can be programmed.It is main point of our researching to apply the message mechanism to construct the MMI of the mobile phone software. The key points are how to process the message, how to hand out the message, how to construct and realize the MCC mechanism, including its interpret, the definition and analysis of its data construction. So, the author describes system configuration of MMI software, introduces LOOK module and Service-Group that are making up of MMI, puts forward the core idea of realizing software code-MMCs mechanism, and discover the running ways of the MCC mechanism through the example. On the basis of core idea of MMCs mechanism, for example, the author realizes the SMS's man-machine interface function, explains particularly the programm of application software. Finally, the author analyses the GSM protocol's main part(L3 layer protocol) in detail, completesthe design of protocol software by example of SMS protocol entity, and realizes the actual program coding according to above process.