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Adding Timing-Awareness to AUTOSAR Basic-Software -- A Component Based Approach

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3 Author(s)
Schreiner, D. ; Inst. of Comput. Languages, Vienna Univ. of Technol., Vienna, Austria ; Schordan, M. ; Knoop, J.

AUTOSAR as specified in its current version fosters timing-constraints at application level to support the development of real-time automotive applications. However, the standard's actual specification does not consider any timing information for its basic software. In consequence, the over-all timing-behavior of software running at a specific system node can not be calculated and thus validated at development-time. Even worse, any exchange or modification of basic software modules induces unpredictable alteration in system timing, and may even lead to a severe miss of execution deadlines. Within this paper we solve this issue by using a component based basic software architecture, as much as timing-aware software composition for basic software components. We therefore introduce timing contracts as enhancement for existing interface contracts, specify a timing annotation language on a conceptual level, and demonstrate how to capitalize on our approach by calculating timings within composed basic software architectures at development time.

Published in:

Object/Component/Service-Oriented Real-Time Distributed Computing, 2009. ISORC '09. IEEE International Symposium on

Date of Conference:

17-20 March 2009

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