Problems with TestLeftFrequencySweep.bs2 -- Getting errors with the DO...LOOP command

eMarston15

Hey, everyone. I recently started Chapter 8 in the Boe-Bot activities guide, and I had some problems with TestLeftFrequencySweep.bs2 (below). Whenever I run it, it'll highlight the LOOP and tell me it expected a variable, label, or NEXT. But when I change it to NEXT, it highlights the DO and says I have a DO without a LOOP... Any suggestions/fixes I can make to the script?

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'

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[ Title ]

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' Robotics with the Boe-Bot - TestLeftFrequencySweep.bs2
' Test IR detector distance responses to frequency sweep.

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

'

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[ Variables ]

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freqSelect VAR Nib
irFrequency VAR Word
irDetect VAR Bit
distance VAR Nib

'

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[ Initialization ]

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DEBUG CLS,
" OBJECT", CR,
"FREQUENCY DETECTED", CR,
"

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"

'

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[ Main Routine ]

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DO

distance = 0

FOR freqSelect = 0 TO 4

LOOKUP freqSelect, [37500,38250,39500,40500,41500], irFrequency
FREQOUT 8,1, irDetect
irDetect = IN9
distance = distance + irDetect

DEBUG CRSRXY, 4, (freqSelect +3), DEC5 irFrequency
DEBUG CRSRXY, 11, freqSelect + 3

IF (irDetect = 0) THEN DEBUG "Yes" ELSE DEBUG "No "

PAUSE 100

DEBUG CR,
"

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", CR,
"Zone ", DEC1 distance
LOOP

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Thanks for anything you guys can find that I missed. Any help would be appreciated.

Publison

Welcome to the forum!

Your missing a "NEXT" command above the the "LOOP". It's in the text. You must have missed it while typing.