On Tue, 28 Aug 2001, Leslie Lowe wrote:

> To convert from count to degrees I used AWC Electronics Floating Point Math
> Coprocessor "Pak-IX". Sure its overkill for the simple math stuff
> but its a no brainer. Plug in the variables and tell it what to do.
>
> Roll (degrees) = ASIN ((DcycleNOW - DcycleCAL) / DcyclePER) * (180 / pi)
>
> Where:
> DcycleNOW = Duty Cycle taken now
> DcycleCAL = Duty Cycle at Zero g taken during calibration
> DcyclePER = Duty Cycle per g taken during calibration

Here's an arcsine routine:

http://www.dattalo.com/technical/software/pic/arcsine.asm

However, I'd be inclined to dynamically build the lookup table at
calibration time and use the "DcycleNOW" as the interpolation variable.

Scott

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