matlab：coe文件

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深度为4096，位宽为8

1. 正余弦

%% sin-cos wave data write in coe file
clear all ;
clc ;
N = 4096 ;
y = zeros(N , 1) ;
for i = 1:1:N 
    x = i ;
    %y(i,1) = ceil( 127*sin(x*2*pi/N) ) + 127 ;
    y(i,1) = ceil( 127*cos(x*2*pi/N) ) + 127 ;
end   
plot(y);
hold on;
fid = fopen('cos_4096.coe','wt');    
%- standard format
fprintf( fid, 'MEMORY_INITIALIZATION_RADIX = 10;\n');                     
fprintf( fid, 'MEMORY_INITIALIZATION_VECTOR =\n');
%- write data in coe file
for i = 1:1:N
    fprintf(fid,'%d,\n',y(i,1));  
end
fclose(fid);

2. 三角波

%% triangle wave data write in coe file
clear all ;
clc ;
N = 4096 ;
y = zeros(N , 1) ;
for i = 1:1:N 
    if(i < 2049)
        y(i,1) = fix( (i/8) - 1 ) ;
    else
        y(i,1) = fix( ((4096 - i )/8) ) ;
    end
end   
plot(y);
hold on;
fid = fopen('triangle_4096.coe','wt');    
%- standard format
fprintf( fid, 'MEMORY_INITIALIZATION_RADIX = 10;\n');                     
fprintf( fid, 'MEMORY_INITIALIZATION_VECTOR =\n');
%- write data in coe file
for i = 1:1:N
    fprintf(fid,'%d,\n',y(i,1));  
end
fclose(fid);

3. 矩形波

%% rectangle wave data write in coe file
clear all ;
clc ;
N = 4096 ;
y = zeros(N , 1) ;
for i = 1:1:N 
    if(i < 2049)
        y(i,1) = 255 ;
    else
        y(i,1) = 0 ;
    end
end   
plot(y);
hold on;
fid = fopen('rectangle_4096.coe','wt');    
%- standard format
fprintf( fid, 'MEMORY_INITIALIZATION_RADIX = 10;\n');                     
fprintf( fid, 'MEMORY_INITIALIZATION_VECTOR =\n');
%- write data in coe file
for i = 1:1:N
    fprintf(fid,'%d,\n',y(i,1));  
end
fclose(fid);

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