I have recently took MCU board and testing continuity across button.
When board is not powered i.e; not executing code, continuity on button is as expected (i.e; diagonally opposite pins are not showing connected). However, while MCU board is executing code and I try to check connectivity across switch pins it shows shorting.
Am I doing something wrong? Is there any rule that continuity should be checked only when Board is powered off? Does it means, that board has some fault?
For the reference, I have added snapshot of swich I am using.