afc_setup.m

Frequency estimation by searching the pure tone frequency with 2-pole filter

clear all;
close all;
%define input
NoOfIQSample=160;
ThetaX=pi*(67708.3-0)*2/270833.3;
n=1:1:NoOfIQSample;
DC_offset=0;
x(2*n-1)=cos(ThetaX*n)+DC_offset;
x(2*n)=sin(ThetaX*n)+DC_offset;
u=0*ones(1,32);
x=[x,u];

ylod=fopen('y.lod','w');
fprintf(ylod,'_DATA Y 0\n');
fprintf(ylod,'%s\n',dec2hex(length(x)));
for i=1:1:length(x)
    if (round(x(i)*32768)==32768)
        Xhex='7FFF';
    elseif (round(x(i)*32768)==0)
        Xhex='0';
    else
        Xhex=dec2hex(round(mod(x(i)*32768+65536,65536)));
    end
    fprintf(ylod,'%s\n',Xhex);
end
fclose(ylod);