Finding the change and direction of a signed word value (sensor output) ?

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  1. - 17th May 2010, 12:46 #3
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    Acetronics2
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    Lightbulb Supposing you build a barometer or altimeter ... using MS5534 or Hope HP03 ...

    Hi, Martin

    Assuming pressure will be read as i.e 1013.3 mb ( displayed number < 65536) ...

    the difference between two measures will be < 32768 ... ( or you will feel really really really bad !!! )

    sooo ...

    the MSB of the difference will be 0 for positive difference and 1 for neg difference... add to that PBP offers the direct print of the value and sign : " SDEC Difference "

    Alain
    Last edited by Acetronics2; - 17th May 2010 at 13:29.
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
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