[unbelievr]

I have wanted to apply some amount of fuzzing for embedded development, but have not yet stumbled over any tools or strategies for this. Is there anyone who have some experience with this?

More specifically, I want to test against a stack with an API written in C, but the problem is that it is only accessible through code. Code that needs to be flashed to physical hardware before running. A crash in the stack leads to some trigger that can give output, so it's easy to identify a crash. For now, I have made a serialization layer for the API functions, but feel like any fuzzing methodologies would mainly test the serialization instead of the underlying stack.

Is there any tools out there that can do this, or what AFL-fuzz does but on ARM Cortex M running with a debugger?