Testing embedded software hits a wall application developers never meet: a good share of the behaviour lives in hardware that is scarce, slow, or not on your desk yet. Teams that ship reliable firmware get past it the same way — test most of the logic off-target, write code that can be exercised without the board, and reserve real hardware for the cases that genuinely need it.
The courses build that habit from the ground up: testing fundamentals for hardware-software systems, test-driven development in resource-constrained environments, and continuous integration that runs the suite on every change rather than the night before a release. The result is firmware you can change without holding your breath.