e_fft.h File Reference

Package to mange the FFT. More...

#include <dsp.h>

Defines
#define	FFT_BLOCK_LENGTH   256
#define	LOG2_BLOCK_LENGTH   8
Functions
void	e_doFFT_asm (fractcomplex *sigCmpx)
	Execute the FFT with dsPic special instructions.

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Detailed Description

Package to mange the FFT.

In this package the FFT (fast fourier transform) is done with the special dsPic 30fxxxx instructions.
Before calling the e_doFFT_asm() function, you must to fill the sigCmpx array with your values. This array is stocked in the Y memory of the dsPic.

Author:

Code & doc: Jonathan Besuchet

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Define Documentation

#define FFT_BLOCK_LENGTH   256

#define LOG2_BLOCK_LENGTH   8

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Function Documentation

void e_doFFT_asm

(

fractcomplex *

sigCmpx

)

Execute the FFT with dsPic special instructions.

Parameters:

sigCmpx

The pointer of the begining of the array on which you want to perform the FFT.

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