Study On Automotive Embedded Operating System Conforming To AUTOSAR OS Specification

With the high speed development of automotive electronics technology, automotive has become more and more intelligent.One vehicle assembles more MCUs which swap data with other nodes by area network to make sure more and more complex function realized. The cohesion of software deepers its complexity and highers its development costs. How to control the complicative automotive electronics system and reduce the development costs effectively has become a big problem for enterprise.AUTOSAR is consisted of OEMs and tier-1 components suppliers and it aims at degrading the complex degree of software and raising the software reusablity and transplantation by standard software architecture and application interface. AUTOSAR brings more convience in the procedure of software developemt.Standard software platform catches more company's attention to join AUTOSAR and more competition occurs among OEMs and suppliers, which makes more contribution to automobile industry.This paper will focus on AUTOSAR OS specification.Based on the ?C/OS-? conforming to OSEK OS, the paper will bring some features of AUTOSAR OS in ?C/OS-? and implement all features in SC1 and some of features in SC2/SC4 to achieve OS upgrade.The main research contents are as follows:(1) The development and tendency of automotive electronic industry and embedded operating system are summarized; The software system of OSEK/VDX is introduced; Based on the AUTOSAR system architecture, software architecture,methodology and application program interface are introduced.Kinds of investigation about current AUTOSAR research status are including in this paper.(2) This paper emphasizess on analysing AUTOSAR OS. Rigid demands and scalability classes in AUTOSAR OS are elucidated. There are analysing about all the features in AUTOSAR OS, research on software free run timer, schedule table, stack monitor and time protection.(3) Based on the ?C/OS-? conforming to OSEK OS, some fearures conforming to SC1 and part of feature comforming to SC2/SC4 in AUTOSAR OS are introduced to?C/OS-?,which achieves OS modification and expansion.Finally,the new fearures implemented in ?C/OS-? which modified conforming to AUTOSAR OS are tested and analysed.