Hi,
I am unable to find FFT using the following code..I am using TMS6713 ans ccs 3. Please help me in this regard
#define CHIP_6713 1
#include "dsk6713.h"
#include "stdlib.h"
#include "math.h"
#include "utility.h"
#define PI 3.14159265358979323846
#define N 512
float x[2 * N];
float w[N];
void divide(float *x,int n)
{
int i;
float inv = 1.0 / n;
for(i=0;i<n;i++)
{
x[2 * i]=inv * x[2 * i];
x[2 * i + 1]=inv * x[2 * i + 1];
}
}
void main()
{
int i;
float mag[N];
60
for(i=0;i<N;i++)
{
x[2 * i]= sin(2 * PI * 10 * i / N) + sin(2 * PI * 40 * i / N);
x[2 * i +1]=0;
}
tw_genr2fft(w,N);
bit_rev(w,N>>1);
DSPF_sp_cfftr2_dit(x,w,N);
bit_rev(x,N);
for(i=0;i<N;i++)
{
mag[i]=sqrt((x[2 * i] * x[2 * i]) + (x[2 * i + 1] * x[2 * i + 1]));
}
bit_rev(x,N);
DSPF_sp_icfftr2_dif(x,w,N);
divide(x,N);
while(1);
}
bit_rev , dsp67x.lib , utility.c, dsk6713bsl.lib where to get these files ?
Can you tell me in steps what should i do to get FFT o/p and where to check?
