Ttp Sim : a Versatile Simulation Environment for Ttp/c

Future electronic systems for the implementation of safety-critical applications on-board automotive vehicles will be based on distributed embedded systems. The most critical component in such systems is the communication network that connects the individual electronic modules. For reasons of costs, composability, ease of validation, and certiication the use of time-triggered communication protocols has been proposed for these kinds of systems. In this paper we present TTP SIM , a versatile simulation environment for the time-triggered protocol TTP/C. This environment is running the same protocol source code that is executed on the target hardware and thus facilitates the testing of the protocol software before the actual hardware is available. Since the target hardware is simulated these tests can be performed independently from hardware faults. Through its supports of script-driven test runs TTP SIM provides a convenient platform for regression tests in case of changes to the protocol source code and for the construction of a suite of reference test sets for protocol conformance test.