Talks and Poster Presentations (with Proceedings-Entry):
R. Obermaisser, D. Riezler:
"HIS/VectorCAN Driver API on Top of a Time-Triggered Communication Protocol";
Talk: SAE World Congress & Exhibition,
Detroit, MI, USA;
- 2007-04-19; in: "Proc. of the SAE World Congress & Exhibition",
In-Vehicle Networks, 2007 - SP-2102
The HIS/VectorCAN driver provides an Application Programming Interface (API) that is used in many present day cars and makes CAN-based applications independent from the implementation details of speci┐c communication controllers. This paper describes a solution for establishing this API in a time-triggered computer system. We construct integrated node computers, which provide both an execution environment for time-triggered applications and a CAN execution environment. The CAN execution environment offers to the application software the API according to the HIS/VectorCAN driver speci┐cation. Thereby, we allow the reuse of existing software, which has been developed for the API of the HIS/VectorCAN driver, as part of future time-triggered in-vehicle electronic systems. For this purpose, this paper introduces middleware services that operate between a time-triggered operating system and the CAN-based applications. In a ┐rst step, the middleware establishes an event channel on top of the time-triggered communication protocol in order to support CAN transmission requests at a priori unknown points in time. By using this event channel, the middleware then realizes the services comprising the API of the HIS/VectorCAN driver, including send and receive operations, message ┐ltering, and callbacks. In a prototype setup with a TTP cluster, we show how the API can be used by periodic and sporadic CAN application tasks.
Created from the Publication Database of the Vienna University of Technology.