Embedded Software and Motor Control Libraries for PXR40xx

call. The number of the filtered points is defined by assigning a value to the
u16NSamples variable stored within the filter structure. This number represents the
number of filtered points, as a power of 2, as follows:
Equation GDFLIB_FilterMA_Eq5
Note
The size of the filter window (number of filtered points) must
be defined prior to this function call and must be equal to or
greater than 0, and equal to or smaller than 31 (0 <
u16NSamples < 31).
4.24.5 Re-entrancy
The function is re-entrant.
4.24.6 Code Example
#include "gdflib.h"
tFloat fltInput;
tFloat fltOutput;
GDFLIB_FILTER_MA_T_FLT flttrMyMA = GDFLIB_FILTER_MA_DEFAULT_FLT;
void main(void)
{
// input value = 0.25
fltInput = (tFloat)(0.25);
}
// filter window = 2^5 = 32 samples
flttrMyMA.u16NSamples = 5;
GDFLIB_FilterMAInit_FLT (&flttrMyMA);
// output should be 0.0078125
fltOutput = GDFLIB_FilterMA_FLT (fltInput,&flttrMyMA);
// output should be 0.0078125
fltOutput = GDFLIB_FilterMA (fltInput,&flttrMyMA,Define FLT);
// ##############################################################
// Available only if single precision floating point
// implementation selected as default
// ##############################################################
// output should be 0.0078125
fltOutput = GDFLIB_FilterMA (fltInput,&flttrMyMA);
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
Chapter 4 API References
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