vivado与matlab怎么连接,vivado和matlab联合实现FIR滤波器

matlab中产生FIR滤波器和测试数据并导入到FPGA中仿真。

1.生成测试数据。采样率fs=20MHZ,正弦信号f0=1MHZ,f1=4MHZ.matlab代码如下:

fs=20e6;

f0=1e6;

f1=4e6;

N=16;

t=1/fs:1/fs:1;

%s=simout(1:500:length(simout));

s0=sin(2*pi*f0*t);

s1=sin(2*pi*f1*t);

s=s1+s0;

s=s(1:10240); %%截取10240点方便导入FPGA

ss=s/max(abs(s));

fss=20*log10(abs(fft(ss)));

sss=fss-max(fss);

%x=0:length(sss)-1;

x=1:length(sss)-1;

sss=sss(1:(length(sss)-1));

x=x/length(x)*fs;

plot(x,sss);

Q_si=round(s*(2^(N-1)-1));

fid=fopen('F:\shuzixinhao\fir_test1\fir_xs.txt','w');

for i=1:(length(s))

B_si=dec2bin(Q_si(i)+(Q_si(i)<0)*2^N,N);

for j=1:N

if B_si(j)=='1'

tb=1;

else

tb=0;

end

fprintf(fid,'%d',tb);

end

fprintf(fid,'\r\n');

end

fprintf(fid,';');

fclose(fid);