Error: "Expected a Label" - bs2 from the 'whats a microcontroller' kit

Kris1

Hi folks,

Noobie here I recently picked up parallax's 'whats a microcontroller' book/kit and am having a lot of fun learning how to program these controllers. I am working with the "readpushbuttonstate.bs2" program. When i run the program, i get "error 148:Expected a label" after the THEN statement. Below is my code and my pc specs.

Win 7 64bit
Basic Stamp 2.5.3
USB connection

'{PBASIC 2.5}
'{$STAMP BS2}

DO
  DEBUG ? IN3

    IF (IN3 = 1) THEN
      HIGH 14
      PAUSE 50
      LOW 14
      PAUSE 50

    ELSE
      PAUSE 100

  ENDIF

LOOP

Any thoughts on what i should be modifying? It looks identical to what is in the book (page 72).

Thank you for your help!

Sapphire

You need a $ character before PBASIC in the top line.

Instead of typing these in, you can click an icon in the toolbar which will insert them correctly.

Edit: corrected first line.

davejames

Kris1 wrote: »

When i run the program, i get "error 148:Expected a label" after the THEN statement.

Kris1,

That error is indicative of having the {$PBASIC 2.0} directive instead of {$PBASIC 2.5}.

PBASIC 2.0 only supports a THEN to a label, where 2.5 supports a THEN to an action.

I don't have a Stamp here at work to verify what Sapphire said, but the toekenization of the directives with/without a space between the single quote and the left brace made no difference.

Mike Green

You've got "'{PBASIC 2.5}" as the first line of your program. It should be "'{$PBASIC 2.5}".

tomcrawford

When you click the icon, (see the BASIC Reference Manual beginning on page 43), it puts in exactly what it wants to see.

Kris1

Thanks, guys. The space and $PBASIC did the trick!