SMART-plan: a new message scheduler for real-time control networks
Margaret Naughton · 2005
The CAN (controller area network) is an established automotive control network. CAN is used in many applications outside of the automotive domain, in particular in the industrial automation space. CAN is used in real-time applications, but the scheduling of messages on CAN is not fully deterministic. In recent years a session layer has been developed for CAN so that a 'time-triggered' scheduling approach could be applied to the protocol. The time-triggered solution is referred to as TTCAN (time-triggered CAN). TTCAN supports a simple, time-based, static message schedule where each message has a precise transmit or receive time based on a global network clock. This paper outlines the development of a new tool that automatically generates the schedule for a set of messages running on TTCAN.