KarlB Posted March 23, 2020 Report Share Posted March 23, 2020 I've recently encountered some odd behavior while running a Thunder on the bench. When setting one of the six available CAN streams for CAN2 to transmit a user stream at 1Hz, the ECU basically vomits those frames at at insane rate and immediately fills the buffer of my PCAN dongle. If I turn off that stream and turn it back on at 1Hz, the problem persists. The behavior seems unchanged if I alter which user stream to transmit or which ID setting I have for that stream. If I set the transmit rate to some value other than 1Hz, the problem resolves itself. At this point I can set the stream back to 1Hz and it behaves as expected. The problem does not re-appear across firmware reflashes. So it seems that the very first time you initialize a stream, if you have it set to 1Hz, it will flood the bus with packets. I'm using PCLink version 5.6.7.3632. Below is my firmware information: ECU firmware version : 5.6.7.3631 Bootcode Version : 1.9 Board S/N : 40499 ECU type : 39 The config I have attached has had Streams 1, 2, 3, 4, and 5 for CAN2 set to rates other than 1Hz, so they seem to operate fine. Stream 6 has not been touched. Thunder CAN2 Issue.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 23, 2020 Report Share Posted March 23, 2020 Does it only do it if you turn on a transmit stream that has no frames/parameters set up already on the streams tab, or does it happen regardless? I kind of got something like you explain but only if I enable a "empty" stream. Quote Link to comment Share on other sites More sharing options...
KarlB Posted March 23, 2020 Author Report Share Posted March 23, 2020 19 minutes ago, Adamw said: Does it only do it if you turn on a transmit stream that has no frames/parameters set up already on the streams tab, or does it happen regardless? I kind of got something like you explain but only if I enable a "empty" stream. I did not test it with an empty stream. I did all my tests with user streams that had frames assigned. Quote Link to comment Share on other sites More sharing options...
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