AnsweredAssumed Answered

R

Question asked by dong.hoang on Nov 4, 2012
  I think it's impossible. I suggest other solution : using external logic IC such as 7408 to create a logic expression (Button 1) AND (Button 2)AND....AND (Button n) and it's output connected to EXT0 pin. And in the interrupt service, you  check which button state is Low and write code

Outcomes