Clock synchronization and weak TDMA for CAN FD: Implementation and evaluation

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2022-12-27

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Demirel, İsmet Onur

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The Controller Area Network (CAN) is the most widespread in-vehicle communication protocol. Although CAN has been used for many decades, there are very recent software-based enhancements that enable accurate clock synchronization and time-slotted medium access on CAN, denoted as weak time division multiple access (WTDMA), for deterministic bus access. In addition, there are recent updates to the CAN hardware such as CAN with flexible data rate (CAN FD) in order to both increase the available bit rate and the length of CAN message frames. This thesis takes into account that the mentioned software-based improvements have been proposed and evaluated for the standard CAN protocol but not for CAN FD. That is, the thesis first realizes different clock synchronization methods for CAN FD on state-of-the-art microcontroller evaluation boards. Making use of these clock synchronization methods, the thesis further implements WTDMA and confirms its correct operation for CAN FD. As an important feature, all the implementations are done in software and are hence compatible to both CAN and CAN FD standard.

Subject Keywords

Controller Area Network, CAN with Flexible Data rate, Clock synchronization, Weak TDMA

URI

https://hdl.handle.net/11511/101879

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

İ. O. Demirel, “Clock synchronization and weak TDMA for CAN FD: Implementation and evaluation,” M.S. - Master of Science, Middle East Technical University, 2022.