Debugging while BT is working

[Elena]

Hi

I know perfectly it is not possible to debug while the softdevice is enable and the Bluetooth is working. When I try to set up a breakpoint under these conditions, the CPU restarts after resuming execution: I get a vetor catch exception.

My question is: Why happens this? Is this a protection to avoid inverse engineering of softdevice code? Or it is due to any other mechanism?

I think it is interesting to know why this happens because in my system, I'm using FreeRTOS with the SD, and sometimes, I get a vector catch exception: I suspect the BLE task is introducing delays in the SD execution and it should need a higher priority. Maybe this could trigger a vector catch exception in a similar way that pausing execution with the debugger.

Thanks in advance

Elena

[Elena]

That's even more interesting: The vector catch registers indicates "not triggered" state. It is the same exception I receive when I stop execution while BT is working. :-( That's why I would like to know a bit more about this case.