Motion Detection, CMUCam2

[tuttut89]

I'm having trouble doing frame differencing with my cmucam2.  It seems that everything is set up ok and the lens cap is off so I don't know why this isn't working.  Any help will be greatly appreciated!

'{$STAMP BS2}
'{$PBASIC 2.5}

rcv VAR Byte(10)

PAUSE 1000
SEROUT 7, 84, ["RS", CR]
PAUSE 1000
SEROUT 7, 84, ["CR 18 44",CR]
PAUSE 5000
SEROUT 7, 84, ["PM 1",CR]
PAUSE 100
SEROUT 7, 84, ["BM 1",CR]
PAUSE 100
SEROUT 7, 84, ["RM 3",CR]
PAUSE 100

DO
  SEROUT 7, 84, ["LF",CR]
  SEROUT 7, 84, ["FD",CR]
  SERIN 9, 84, [STR rcv\10]
  DEBUG CLS
  DEBUG DEC rcv(2),CR
  DEBUG DEC rcv(3),CR
LOOP