Computer Science ›› 2018, Vol. 45 ›› Issue (4): 190-195.doi: 10.11896/j.issn.1002-137X.2018.04.032

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Study on Automatic Method for AUTOSAR Runnable Entity-task Mapping

RAN Zheng, LUO Lei, YAN Hua and LI Yun   

  • Online:2018-04-15 Published:2018-05-11

Abstract: The next generation automotive electronic standard AUTOSAR defines that the automotive application design process includes system level design and ECU level design.Software components are function units of application in system level design and each software component comprises a set of runnable entities.The main task of ECU level design is organizing the code segments of runnable entities as embedded operating system tasks.In the process of transforming the component set which is assigned from one ECU into a real-time system task set,the experienced embedded development engineers are necessary for runnable entity-task mapping configuration to ensure the real-time performance of the system.As the requirements of runnable entity-task mapping configuration are large and complex,this paper proposed a runnable entity-task automatic mapping method.With the consideration of trigger relationship between runnable entities,period requirements,data sharing and other factors,this method has important practical significance in improving the efficiency of automotive software development.Finally,the proposed method was applied to the automotive electronic cruise control system instance in AUTOSAR.The experimental results show that the proposed method has good performance in the aspects of jitter time,blocking time,frequency of scheduling and data traffic.

Key words: Automotive electronics,ECU configuration,Runnable entity,Task,Mapping

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