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Communication Centric Design in Complex Automotive Embedded Systems

Authors: Arne Hamann, Dakshina Dasari, Simon Kramer, Michael Pressler, and Falk Wurst

Published in: LIPIcs, Volume 76, 29th Euromicro Conference on Real-Time Systems (ECRTS 2017)


Abstract
Automotive embedded applications like the engine management system are composed of multiple functional components that are tightly coupled via numerous communication dependencies and intensive data sharing, while also having real-time requirements. In order to cope with complexity, especially in multi-core settings, various communication mechanisms are used to ensure data consistency and temporal determinism along functional cause-effect chains. However, existing timing analysis methods generally only support very basic communication models that need to be extended to handle the analysis of industry grade problems which involve more complex communication semantics. In this work, we give an overview of communication semantics used in the automotive industry and the different constraints to be considered in the design process. We also propose a method for model transformation to increase the expressiveness of current timing analysis methods enabling them to work with more complex communication semantics. We demonstrate this transformation approach for concrete implementations of two communication semantics, namely, implicit and LET communication. We discuss the impact on end-to-end latencies and communication overheads based on a full blown engine management system.

Cite as

Arne Hamann, Dakshina Dasari, Simon Kramer, Michael Pressler, and Falk Wurst. Communication Centric Design in Complex Automotive Embedded Systems. In 29th Euromicro Conference on Real-Time Systems (ECRTS 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 76, pp. 10:1-10:20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)


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@InProceedings{hamann_et_al:LIPIcs.ECRTS.2017.10,
  author =	{Hamann, Arne and Dasari, Dakshina and Kramer, Simon and Pressler, Michael and Wurst, Falk},
  title =	{{Communication Centric Design in Complex Automotive Embedded Systems}},
  booktitle =	{29th Euromicro Conference on Real-Time Systems (ECRTS 2017)},
  pages =	{10:1--10:20},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-037-8},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{76},
  editor =	{Bertogna, Marko},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECRTS.2017.10},
  URN =		{urn:nbn:de:0030-drops-71624},
  doi =		{10.4230/LIPIcs.ECRTS.2017.10},
  annote =	{Keywords: Communication semantics, logical execution time, implicit communication, automotive, embedded systems, scheduling simulation, Amalthea}
}
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