CPU In-Circuit Program

With the rapid development of technologies of car network, the car network becomes more and more important in the car electronic system. For thirty years since technologies of car network came forth, car network system have been indispensable for car electronic with the development of semi-conductor and network protocol, and it's not only the way to solve the problem of complicated wiring harness, but the basic of car information and control system. The car network offers the API and hide the details, which makes developers work in application layer, increase the speed of transform and reduce the wiring harness.An implementation solution of automotive network is brought forward in the thesis, and then some theories of the automotive network are introduced, the protocols of CAN bus, LIN bus are studied and analyzed. As an implementation example of the research results mentioned above, an automotive window lift is described. That network is developed on microcontroller, mixed programmed by C and assembly language. It is accomplished as a cooperative project between the research group and SGM AUTOMOBILE, aiming at providing automotive network and protocol for SGM AUTOMOBILE.In the first chapter, the concept and topological of in-vehicle network, the actual state of automotive network and the trend of its development are presented, and the scope, content and purpose of the research project are also introduced.As the theoretical part of the research, related issues about the in-vehicle network are studied in detail in the second chapter. The class or category of the automotive network and the mainstream protocols of the automotive network are studied in this chapter, especially the protocols used in the project (CAN and LIN).The third chapter is practical part of the research. The authors analyze the macro design of the automotive window lift in these chapters. Using the method of CRC checkout and CHECKSUM checkout done the check of data in EEPROM and flash. Ensure the integrality of data. Also using the SCM bunch and VC++'s MSComm realized the communication between test system and computer. So it can use computer to operate the test system directly. At the same time, the system can send the information back to computer. So as to the system's function will be more powerful, the flow be more intuitionistic.At the end of the thesis, the conclusions of the research are drawn in the forth chapter, and the recommendations on further research and development are also given here.