Debugging with SWD and GDB

Module goal: halt a program, inspect values, and find the cause of a fault from evidence.

Status: alpha (experimental) · Approximate time: 140 minutes

Every lesson has content, examples you can run on your computer, practice with a solution, a check for understanding, and a lab. The course code runs and has been checked on a computer; the on-board labs are still waiting for a teaching trial.

Lesson	Topic	Time
c-found.m03.l01	SWD and GDB basics	70 min
c-found.m03.l02	Diagnosing faults from evidence	70 min

End-of-module checkpoint

• Set a breakpoint, inspect variables, and view a backtrace on a real board, and know how to start a debug session without leaving CM33 stuck in the boot ROM.
• Write up one diagnosis that separates at least three hypotheses with evidence.
• Pass every test in the 06_diagnose.c exercise, including the one requiring you to answer “cannot be measured” when the counter is cleared mid-measurement.