Looking for feedback on how to listen in in the bus?

Flashlight Modding and DIY Parts
1

Looking at the anduril code. It seems to be driven by int variables which appear to be based on bits. How can I listen in on the driver to see what it’s doing so I can start modifying the firmware blindsided ?

2

External:

  • Oscilloscope
  • Logic analyzer

Internal:

  • debugWIRE (slow!)

Realistic:

  • Just read and understand the code. Test the behavior of the flashlight. As a last resort use software emulation, e.g. simavr and gdb.