Yoctopuce Yocto-GPS, User Manual

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f. calibrateFromPoints ( ValuesBefore, ValuesAfter ) ;
f. get_module () . saveToFlash () ;
You will find, in the Examples\Prog-Calibration directory of the Delphi, VB, and C# libraries, an
application allowing you to test the effects of the 1 to 5 point calibration.
Arbitrary interpolation
It is also possible to compute the interpolation instead of letting the module do it, in order to calculate
a spline interpolation, for instance. To do so, you only need to store a callback in the API. This
callback must specify the number of calibration points it is expecting.
public static double CustomInterpolation3Points ( double rawValue, int calibType,
int [] parameters, double [] beforeValues, double [] afterValues )
{ double result;
// the value to be corrected is rawValue
// calibration points are in beforeValues and afterValues
result = .... // interpolation of your choice
return result;
}
YAPI. RegisterCalibrationHandler ( 3 , CustomInterpolation3Points ) ;
Note that these interpolation callbacks are global, and not specific to each function. Thus, each time
someone requests a value from a module which contains in its flash memory the correct number of
calibration points, the corresponding callback is called to correct the value before returning it,
enabling thus a perfectly transparent measure correction.
17. Advanced programming
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