How, EXACTLY, is the switch wired? The internal pullup resistors are not being used; God only knows why not. So, you MUST have external pullup or pulldown resistors. What value, and how are they wired?
How, EXACTLY, is the switch wired? The internal pullup resistors are not being used; God only knows why not. So, you MUST have external pullup or pulldown resistors. What value, and how are they wired?