Research On Design And Implementation Of OSEK/VDX Com

With the great development of electronic technology and the automotive industry, smartcar is being replaced by mechanical car into people’s lives. Smart car in the core component isthe vehicle control system. Many industry and academic institutions make in-depth study andresearch on the vehicle control system. With the number of vehicle electronic control unit andthe proliferation of complex in-vehicle networks, regulate vehicle control system componentsand interfaces, unified development platform for automotive electronic control becomes moreimportant. Therefore initiated by the European automobile industry to establish a OSEK/VDX standard system. The standard includes the operating system[1], network management[2], communication[3]and OSEK implementation language of four parts. One part is thecommunication vehicle network communication process package provides a standardinterface calls, tasks and between tasks and interrupt data communication between processes.This paper first OSEK/VDX standard system in-depth analysis, on this basis are givenin line with the standard communication model, analysis of the model to send and receivemessages in the communication process. Then we OSEK COM communication mechanism inthe core study design the core of the message data structure, and gives the key mechanismalgorithm. And then elaborated on the concrete realization of a communication module, givesa description of the main interface, and interrupt service function implementation process.Finally, we CAN bus network based on the structure of vehicle on a PC simulation of thecorresponding low-level bus, test the functional correctness of the communication module.In the last article, we analyze and evaluate the performance of the system have beencompleted, and to further enhance the performance of the direction.