Improving the reliability of embedded systems as complexity increases: supporting the migration between event-triggered and time-triggered software architectures

Abstract

We can divide the software architectures employed in embedded systems into two categories - time-triggered (TT) and event-triggered (ET) - based on the way in which the various systems tasks are initiated. ET architectures are suitable for use with small systems of limited complexity: as systems grow, it may be necessary to migrate the existing code to a TT architecture. This paper is concerned with techniques which may be used to support the migration between ET and TT architectures.