#include <at89x51.h>
#include <intrins.h>
#include <absacc.h>
#include  "var.h"

void StartFFT()
{
	XBYTE[0xbfff]=1;
	XBYTE[0xbfff]=0;
}
bit IsFFTFin()
{
	if( XBYTE[0xbff]==1)
		return 1;
	else
		return 0;
}
void GetFFT()
{
	unsigned int temp;
	unsigned char templ,temph;
	int i,addr,real,imag;
	long pow;


	
    for(i=0;i<512;i++)
	{
		addr=i*2+ 0xa000;
		templ=XBYTE[addr];
		temph=XBYTE[addr+1];
		temp=temph*256+templ;

		real=(int)temp;

		addr+=0x400;
		templ=XBYTE[addr];
		temph=XBYTE[addr+1];
		temp=temph*256+templ;

		imag=(int)temp;
       	pow=real*real+ imag*imag;
        Wave[i].power=pow;
		Wave[i].freq=SimpleRate/1024*i;
  	}
}