Inverting numbers

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  1. - 2nd January 2011, 13:19 #1
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    Picstar
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    Default Inverting numbers

    Hello all,
    I my most recent project I need an algorithm that will convert low numbers into high ones and vice versa. For instance, I need 255 to be 0, or 1, and 2 to be 255. Im reading these numbers from a pot and need to reverse them to get an accurate speed readout. Any ideas? Thanks for reading. Happy New Year!
  2. - 2nd January 2011, 13:31 #2
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    HenrikOlsson
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    Hi,
    Code:
    myValue VAR BYTE
myValue = 255 - myValue
    Now, if myValue is 0 you'll get 255, if myValue is 255, you'll get 0.

    /Henrik.
  3. - 2nd January 2011, 14:17 #3
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    Default Working!

    Thanks Henrik, I guess I shouldn't have slept through math class. Your the man!.
  4. - 3rd January 2011, 13:36 #4
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    Why don't you reverse the connections to the pot?
    /
    Peter Moritz.
    Up the bush, Western Plains,
    New South Wales,
    Australia.
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