Hello,
I have had some success streaming instruction trace to my Linux PC using RDDI (from ARM Development studio 2019) and a DStreamer ST. However I am also
having some problems:
1. Failure to stop trace cleanly
I have enabled streaming from an ETM attached to a Cortex-R5 core.
As described in the RDDI documentation, to stop streaming, I call StreamingTrace_Flush() and wait for
RDDI_STREAMING_TRACE_EVENT_TYPE_END_OF_DATA event.
Next i call StreamingTrace_Stop() which succeeds and then try StreamingTrace_Detach() which seems to fail with the following assert.
tpp.c:84: __pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= fifo_min_prio && new_prio <= fifo_max_prio)' failed. Aborted (core dumped)
If i try to avoid calling StreamingTrace_{Detach, Stop} then Debug_CloseConn to the core never returns and i get a seg fault.
2. Raw trace does not start with A-SYNC bits
I do see A-SYNC bits later but my understanding was ETM always sends the A-SYNC bits first.
Cheers,
raj