#define N 2048
#define M 1920
//定義的是濾波器的系數
.SECTION/DM seg_sram; 
.VAR _coeffreal[N]= "coeff_fft_re.dat"; 
.GLOBAL _coeffreal; 
.ENDSEG;

.SECTION/DM seg_sram; 
.VAR _coeffimag[N]= "coeff_fft_im.dat"; 
.GLOBAL _coeffimag;
.ENDSEG;

.SECTION/DM seg_sram; 
.VAR _lfmreal[M]= "echo_re.dat"; 
.GLOBAL _lfmreal;
.ENDSEG;

.SECTION/DM	seg_sram; 
.VAR _lfmimag[M]= "echo_im.dat"; 
.GLOBAL _lfmimag;
.ENDSEG;

//定義的fft的旋轉因子和輸入數據
.SEGMENT/PM             seg_pmda;
//.VAR    _sine[N/2]= "ts2.dat";     /*imag twiddle factors, from TWIDRAD2 */
.VAR    _refft[N];                 /* real result */
.GLOBAL _refft;
.var _result[N/2];
.global _result;
//.GLOBAL sine;
.ENDSEG;

.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _imfft[N];               /* imag result */
.GLOBAL _imfft;
//.global cosine;
.ENDSEG;

.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _echo_re_fft[N];               /* imag result */
.GLOBAL _echo_re_fft;
//.global cosine;
.ENDSEG;


.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _echo_im_fft[N];               /* imag result */
.GLOBAL _echo_im_fft;
//.global cosine;
.ENDSEG;


.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _dsp_re_fft[N];               /* imag result */
.GLOBAL _dsp_re_fft;
//.global cosine;
.ENDSEG;



.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _dsp_im_fft[N];               /* imag result */
.GLOBAL _dsp_im_fft;
//.global cosine;
.ENDSEG;



.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _dsp_re[N];               /* imag result */
.GLOBAL _dsp_re;
//.global cosine;
.ENDSEG;


.SEGMENT/DM             seg_sram;
//.VAR    _cosine[N/2]= "tc2.dat";   /* real twiddle factors, from TWIDRAD2 */
.VAR    _dsp_im[N];               /* imag result */
.GLOBAL _dsp_im;
.VAR	_echo_re[M];
.GLOBAL _echo_re;
.VAR	_echo_im[M];
.GLOBAL _echo_im;
//.global cosine;
.ENDSEG;