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The newly developed communication system FlexRay® - The Communication System for Advanced Automotive Control Applications and the typical applications that it is designated for impose high demands on the system development process due to characteristics such as distribution and fault-tolerance and thus require a tool-supported development approach. This article gives an insight into a development process tailored to the particularities of FlexRay®-based real-time applications. The essential process steps are modeling and simulation on the one hand and scheduling and configuration on the other hand. Both steps are supported by software tools that substantially ease the process.

The SAE has classified automotive electronics into two major categories, body electronics and system electronics. The latter (SAE class C) comprises safety critical functions that are of vital importance for the movement of the vehicle. This paper presents a prototype implementation of TTP, a time-triggered communication system developed for this type of applications. The main purpose of the prototype is to provide a means for verifying the concepts of TTP. The paper focuses on a description of the hardware developed for the communication system as well as the protocol software. The TTP controller hardware is a custom made industry pack module which allows the use of TTP in conjunction with a wide variety of existing motherboards and host environments. The protocol software consists of a TTP/C protocol state machine and auxiliary modules to access the various hardware units.