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February 24th, 2018, 12:59 AM   #1
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Twos complement on a computer

Hi,
I am making a PCB project using a Compass module, and a computer program.

I am now getting results, of 2x BYTEs HB and LB.

The data sheet explains that the two bytes are in 'twos complement' form. I now need to program the result from these two BYTEs.

If anyone has maths and computer skills, would they they let me know how to do this please?

Thanks, Camerart.
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February 24th, 2018, 06:20 AM   #2
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Are the bytes individually in that form, or are they to be considered together as a single value in that form?
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February 25th, 2018, 11:36 PM   #3
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It depends what you want the result to look like. If you just want a positive number between 0 and 65535, just add 32768, assuming the 2 bytes are a single number.
What module is it?
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