Robert, It's hard to debug this without a schematic and knowing the connections. You have the pull enabled correct? So did you measure the signal on your input pin if it is high? If yes please control with scope if the button pulls this pin really low once it is pressed. I woudl assume you have some connection problems. Or due to the short exercises the device might be damaged. Therefore I recommend: 1. Fix your connections to prevent shorts (maybe paint a schematic) 2. take a new device and try again
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