A Time-predictable TTEthernet Node

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Abstract

Distributed real-time systems need time-predictable computation and communication to facilitate static analysis of timing requirements and deadlines. This paper presents the implementation of a deterministic network protocol, TTEthernet, on the time-predictable Patmos processor. The implementation uses the existing Ethernet controller on the processor and we tested it with a TTEthernet system provided by TTTech Inc. Further testing showed that the controller could send timetriggered messages with bounded latency and a small jitter of approximately 4.5 us. We also provide worst-case execution time analysis of the network code, which demonstrates a timepredictable end-to-end solution. This work enables Patmos to communicate with other nodes in a deterministic way. Thus, extending the possible uses of Patmos.
Original languageEnglish
Title of host publicationProceedings of 2019 IEEE 22nd International Symposium on Real-Time Distributed Computing
PublisherIEEE
Publication date2019
Pages229-33
ISBN (Print)978-1-7281-0151-4
DOIs
Publication statusPublished - 2019
Event22nd IEEE International Symposium on Real-Time Distributed Computing, ISORC 2019 - Valencia, Spain
Duration: 7 May 20199 May 2019

Conference

Conference22nd IEEE International Symposium on Real-Time Distributed Computing, ISORC 2019
CountrySpain
CityValencia
Period07/05/201909/05/2019

Cite this

Lund, M., Pezzarossa, L., Sparsø, J., & Schoeberl, M. (2019). A Time-predictable TTEthernet Node. In Proceedings of 2019 IEEE 22nd International Symposium on Real-Time Distributed Computing (pp. 229-33). IEEE. https://doi.org/10.1109/ISORC.2019.00048