Is this a valid statement?


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  1. #1
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    Default Is this a valid statement?

    for digit = 0 to 6
    lookup digit,(4,5,9,10,6,2,3), portb

    I know you can put the number in a var but can you "stick" on portb this way?

    Thanks, Don

  2. #2
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    dbachman,

    I haven't played with lookup in a while, but according to the manual, no. I assume you're trying to set the pins on portb high and low according to the value of digit. I haven't tested this, but try something like:

    Code:
    for digit = 0 to 6
         lookup digit, (4, 5, 9, 10, 6, 2, 3), portb_out
         portb = portb_out
    next digit
    I'm not sure if you need the for loop or not, depending on what you're trying to do. If this doesn't work, let me know and we can get a little more 'creative'.

    -Tony

  3. #3
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    Quote Originally Posted by dbachman View Post
    for digit = 0 to 6
    lookup digit,(4,5,9,10,6,2,3), portb

    I know you can put the number in a var but can you "stick" on portb this way?

    Thanks, Don
    Yes, it will work (TRISB = 0)
    Also,

    READ (Temp DIG X),PORTB
    Or
    POT Pin,255,PORTB
    or
    ADCIN 0, PORTB


    they all work.
    "If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte

  4. #4
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    Okay, I feel like a dolt, but at least I learned something today. Thanks Sayzer.

  5. #5
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    Thanks guys, I haven't tried it yet but I will here in the very near future.

    Don

  6. #6
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    Default Re: Is this a valid statement?

    Can anyone tell me why this does not work:

    if var8 = 1 then goto beper : J = 3

    The if statement works but J does not = 3 ?

  7. #7
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    Default Re: Is this a valid statement?

    The J=3 statement isn't executed when VAR8=1 because you're telling to jump to beper.

    If you want to set J=3 when the IF statement is true then
    Code:
    IF var8 = 1 then
      J=3
      Goto beper
    ENDIF
    or simply move J=3 to after the beper label in your program.

    /Henrik.

  8. #8
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    Default Re: Is this a valid statement?

    You are exiting the code and jumping to a label "beper". The statement j=3 is never getting executed the way you have written it. If "beper was a subroutine (ie GOSUB beper) then it would be returned to after executing and, set j=3 as the next statement.
    Dave Purola,
    N8NTA
    EN82fn

  9. #9
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    Default Re: Is this a valid statement?

    Thank you, that fixes my problem.

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