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.
|Title of host publication||Proceedings of 2019 IEEE 22nd International Symposium on Real-Time Distributed Computing|
|Publication status||Published - 2019|
|Event||22nd IEEE International Symposium on Real-Time Distributed Computing, ISORC 2019 - Valencia, Spain|
Duration: 7 May 2019 → 9 May 2019
|Conference||22nd IEEE International Symposium on Real-Time Distributed Computing, ISORC 2019|
|Period||07/05/2019 → 09/05/2019|