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May 1st, 2012
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  1. ;
  2. ;-- checkEnterButton - pressed = 1 -> r18 NOT_pressed = 0 -> r18        r18(result),r19 (tmp)
  3. ;
  4. checkEnterButton:
  5.     in r19,PINB
  6.     call microWaitLoop
  7.     in r18,PINB
  8.     cp r19,r18
  9.     brne checkEnterNotPressed
  10.     andi r19,0b00010000
  11.     cpi r19,0
  12.     brne checkEnterNotPressed
  13.     ldi r18,1
  14.     jmp checkEnterButtonRet
  15. checkEnterNotPressed:
  16.     ldi r18,0
  17. checkEnterButtonRet:   
  18.     ret
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