Is your application using the SMU? It's fairly common for applications to enable SMU alarms for low voltage, but then have a buggy alarm handler that fails to reset the micro, falls into an infinite loop, etc.
Do you have a debugger that supports hot attach? The standalone debuggers like iSYSTEM, Lauterbach, and PLS can allow you to connect to the AURIX without a reset.
Otherwise, I would add some breadcrumbs to your software, to help find out where it's at. For example:
- You might use multiple GPIO outputs to indicate different events: one in cstart, one after clock initialization, a toggle in each 10 ms loop, etc.
- Alternately, you might use a single GPIO output, and write a little function to toggle it a fixed number of times for each stage in the execution
