I have an I2S microphone ( Arcelli Inmp441 ) connected to the I2S port of a LyraT 4.3 board. I'm happy that this part is successfully delivering a sane ( or at least semi sane ) data stream as I have streamed the data to a plotter satisfactorily.
The collection runs in a thread simply capturing data and putting it in to a buffer using the standard I2S DMA Driver.
I can create and initialize the Opus encoder.
Another thread simply waits for packets of PCM data and passes them to the Opus encoder.
That's as far as I have got. The call to the Opus encoder blows the stack every time.
I have spent several weeks trying to debug this and have pushed ever further into the Opus code single stepping down further and further. I now have reached the point where i cannot seem to progress. Even the call to a subroutine simply crashes out of the debug of VisualGDB.
Others seem to have got Opus running on the ESP32 but I just can't seem to get past this.
I have reworked the code several different ways, no tasks, tasks, with and without passing data or flags, different sized queues, data areas, samples, and sampling rates. I have tried running all in a simple non threaded way and it makes very little difference to the 'location' of the stack failure.
I really would appreciate some help from someone. Lockdown is bad enough without being able to fix a code problem!
Happy to publish my code