Based On The Research Of Autosar Flexray Bus Communication Protocol And Implementation

With the rapid development of automobile electronic technology, the car’s security, stability and other performance requirements of modern society also will increase, bringing a variety of electronic equipment in the car more and more, more and more complex, these electronic devices interconnected in accordance with certain communication protocols use a variety of communication bus into the network to achieve a fast, secure information transmission. In order to achieve real-time and modern automotive electronics communications control system with high security requirement, the LAN-based event-triggered CAN communication bus will not meet the requirements of modern society, so the trigger time-based, small transmission delay, fault-tolerant and high communication speed communication bus-FlexRay bus comes out.In the automotive electronics market, the cost of a variety of electronic systems and supporting software in the vehicle takes higher and higher share proportion, in order to improve the automotive electronics software reusability, reduce the cost of software development of automotive electronics, many domestic and foreign vehicle manufacturers and research institutes to put forward names of many automotive electronics standard at this stage, the mainstream are AUTOSAR standard and OSEK/VDX and so on.This project comes from the3-1subject of nuclear high-based major projects: real-time embedded operating system and development environment, this project is the subject of sub-topics:automotive electronics hardware abstraction.In this dissertation, the realization of the FlexRay communication bus driver layer and the interface layer are based on the AUTOSAR software architecture. The main contents are:1. Studied the architecture of the AUTOSAR standard, focusing on the AUTOSAR communication system.2. Studied the FlexRay communication protocol, analysised the FlexRay frame format, the media involved in the characteristics of control and so on.3. Studied the FlexRay bus driver layer and interface layer of content in the AUTOSAR standard, achieved FlexRay driver layer and interface layer based on the AUTOSAR standard.