forked from acco/chti23
38 lines
969 B
Mathematica
38 lines
969 B
Mathematica
|
clc
|
|||
|
|
clear
|
|||
|
|
|
|||
|
|
N = input('Nombre d''<EFBFBD>chantilllons pour ce signal : ');
|
|||
|
|
Frel = input('Fr<EFBFBD>quence normalis<EFBFBD>e (nombre de p<EFBFBD>riodes dans la dur<EFBFBD>e totale) : ');
|
|||
|
|
Ph0 = input('Phase a l''origine (en degr<EFBFBD>s) : ');
|
|||
|
|
Ph0 = Ph0 * pi / 180.0; % a present en radian
|
|||
|
|
|
|||
|
|
Ampl = 2048;
|
|||
|
|
Offset = 2048;
|
|||
|
|
%% Cr<EFBFBD>ation du fichier .asm
|
|||
|
|
|
|||
|
|
fileID = fopen(['Signal.asm'], 'w');
|
|||
|
|
fprintf(fileID,'\tAREA Signal, DATA, READONLY\n');
|
|||
|
|
fprintf(fileID,'\texport LeSignal\n');
|
|||
|
|
|
|||
|
|
fprintf(fileID,'LeSignal\n');
|
|||
|
|
|
|||
|
|
for i = 1: N
|
|||
|
|
% fonction a modifier en fonction des besoins
|
|||
|
|
Sig(i) = Offset + Ampl * cos( 2*pi*Frel*(i-1)/N + Ph0 );
|
|||
|
|
% arrondi
|
|||
|
|
iSig = int16(Sig(i));
|
|||
|
|
% bornage du signal similaire a la sortie brute de l'ADC 12 bits
|
|||
|
|
if ( iSig < 0 )
|
|||
|
|
iSig = 0;
|
|||
|
|
end
|
|||
|
|
if ( iSig > 4095 )
|
|||
|
|
iSig = 4095;
|
|||
|
|
end
|
|||
|
|
|
|||
|
|
fprintf(fileID,'\tDCW\t0x%04x\t; %2d %4d %7.5f\n',iSig, i-1, iSig, double(iSig) / 4096.0 );
|
|||
|
|
|
|||
|
|
end
|
|||
|
|
|
|||
|
|
fprintf(fileID,'\tEND\n');
|
|||
|
|
fclose(fileID);
|
|||
|
|
plot(Sig);
|