Browse Publications Technical Papers 2007-01-1717
2007-04-16

HIS/VectorCAN Driver API on Top of a Time-Triggered Communication Protocol 2007-01-1717

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 specific 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 specification. 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 first 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 filtering, 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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X