newbe: IF..THEN statement

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  1. - 10th November 2009, 23:45 #1
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    ShawnB
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    Default newbe: IF..THEN statement

    When using the IF..Then statement how many comparison terms can you have? Is the following a legal instruction:

    IF (PORTA.0 = 1 AND PORTA.1 = 1) OR (PORTA.2 = 1) THEN PORTB.0 = 1

    Any help would be appreciated

    thank you,
    Shawn
  2. - 11th November 2009, 00:32 #2
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    No, your line is not legal. Replace it by

    IF (PORTA.0=1) AND (PORTA.1=1) THEN PORTB.0=1

    IF PORTA.2=1 THEN PORTB.0=1

    Robert
    Last edited by rsocor01; - 11th November 2009 at 00:35.
  3. - 11th November 2009, 00:35 #3
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    Or...

    If ((porta.0 = 1) and (porta.1 = 1)) or (porta.2 = 1) then portb.0 = 1
    ___________________
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  4. - 11th November 2009, 01:03 #4
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    Since the three inputs are all on the same port, then you can tray:

    A0 var BYTE

    A0 = PortA.0 + PortA.1 + PortA.2

    If A0 > 2 then PortB.0 = 1

    or.....

    IF PortA & %00000111 > 2 then portB.0 = 1

    Al.
    Last edited by aratti; - 11th November 2009 at 01:07.
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  5. - 11th November 2009, 14:07 #5
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    Thank you very much, this is very helpful.
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