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Using UPPAAL to model and verify a clock synchronization protocol for the controller area network

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3 Author(s)
G. Rodriguez-Navas ; Dept. de Matematiques i Informatica, Univ. de les Illes Balears, Palma de Mallorca, Spain ; J. Proenza ; H. Hansson

A reported liability of the controller area network protocol is that it does not provide a clock synchronization service. Therefore, whenever a CAN-based distributed embedded system requires its nodes to have a common time base, clock synchronization has to be implemented by means of an external mechanism. In a previous work, we proposed a fault-tolerant and high-precision clock synchronization protocol for CAN. This paper shows the first steps towards the formal verification of this protocol. In particular, it presents a formal model that has been built with the UPPAAL model checker and discusses how clock drift and clock correction can be modeled with this tool

Published in:

2005 IEEE Conference on Emerging Technologies and Factory Automation  (Volume:2 )

Date of Conference:

19-22 Sept. 2005