Type-C Power Delivery as Passive PoE Source - Firmware

▤ Summary

If we go with my rack-mounting case, the button is mounted in the rack using a rather short cable. Thus, the first thing that firmware checks during boot time is the state of the button. The reason behind this is that I like to have interrupts available for the stuff that matters (e.g., change on the external pin). It doesnt matter if the press is 3 or 3.01 seconds long, and thus, just checking the timer state is good enough. If a longer duration is needed, you can use 16-bit integers, but I usually find 10 seconds to be plenty.

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