#include #include #include #include #include "FIRFilterCode.h" // #include "FFTCode.h" #define NUMTAPS 128 uint16_t size, i; #define q31_float_to_int(x) ( (int32_t) ( (double)(x)*(double)0x7FFFFFFF ) ) #define DAC_SAMPLE_RATE 21875 uint32_t centerfreq; uint32_t bw; int main(void){ double FirCoeff[NUMTAPS + 1]; // buff[0] = '\0'; centerfreq = 1500; bw = 500; double normalized_center_freq, normalized_bw; normalized_center_freq = (double)(centerfreq*2)/DAC_SAMPLE_RATE; normalized_bw = (double)(bw*2)/DAC_SAMPLE_RATE; TWindowType WindowType; RectWinFIR(FirCoeff, NUMTAPS, firBPF, normalized_center_freq, normalized_bw); printf("freq %f, bw %f", normalized_center_freq, normalized_bw); FIRFilterWindow(FirCoeff, NUMTAPS, wtKAISER, 3.2); printf("coeff = ["); for( int index = 0; index < NUMTAPS; index++){ // printf("%d, ", q31_float_to_int(FirCoeff[index])); printf("%f, ", FirCoeff[index]); } printf("]"); }