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HELP basic stamp!!!!

HELP basic stamp!!!!

HELP basic stamp!!!!

working on an autonomous refrigerator and im running into a wall!!! seems to be running a continuous loop and im not to sure how to get out of it. i am trying to initiate the autonomous movement with a universal remote, then it runs through a series of obstacle avoidance subroutines..... i placed an if....then statement at the beginning of the program which states if button_code and device_code are pressed (my designated stop button) then so to sub stop_bot.  although i feel like this should work it doesn't. ive tried a do.....loop until command and that doesnt seem to be doing the trick either. any help would be great for i am on a deadline to finish this project relatively soon. here is a copy of the code i have written............

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

DEBUG "program running"


  irdetectleft    VAR   BIT
  irdetectright   VAR   BIT
  irdetectcenter  VAR   BIT
  BUTTON_CODE     VAR  BYTE  'Infrated Button Code
  DEVICE_CODE     VAR  BYTE  'Infrared Device Code
'------------[main routine]--------------------------------------------
'*   MAIN PROGRAM       *

  GOSUB COMMAND_030  'Send the Remote control Command to Infrated Control Freak


  SEROUT  14, 16468, [30]
  SERIN  15, 16468,1000,main,  [device_code, button_code]
  DEBUG "button code =", DEC Button_Code,"  Device Code =",DEC Device_code,"                  ", CR
  DEBUG " ",CR
  DEBUG "____________________________",CR
  IF Button_code = 21 AND Device_code = 1 THEN obstacle_avoidance
  IF BUTTON_code = 101 AND device_code = 1 THEN STOP_bot
GOTO poop


    FREQOUT 8, 1, 38500
    irdetectleft = IN9

    FREQOUT 2,1, 38500
    irdetectright = IN0

    FREQOUT 3,1, 38500
    irdetectcenter = IN4

    IF    (irdetectcenter = 0) THEN
      GOSUB back_up
    ELSEIF (irdetectleft = 0) THEN
      GOSUB turn_right
    ELSEIF (irdetectright = 0) THEN
      GOSUB turn_left
      GOSUB forward_pulse

  PAUSE 100
  SEROUT 16, 8276, ["!A1E", CR]
  SEROUT 16, 8276, ["!b1E", CR]

  PAUSE 20
  SEROUT 16, 8276, ["!A14", CR]
  SEROUT 16, 8276, ["!b14", CR]

  PAUSE 20
  SEROUT 16, 8276, ["!A1E", CR]
  SEROUT 16, 8276, ["!b1E", CR]

  PAUSE 20
  SEROUT 16, 8276, ["!a1E", CR]
  SEROUT 16, 8276, ["!B1E", CR]

  PAUSE 20
  SEROUT 16, 8276, ["!A00", CR]
  SEROUT 16, 8276, ["!B00", CR]

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