52 lines
1.3 KiB
Matlab
52 lines
1.3 KiB
Matlab
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Author - Imants Pulkstenis
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% Date - 02.05.2020
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% Project name - Lab work No.3
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% Module name - LookUpTable generator
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%
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% Detailed module description:
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% This file generates lock up table with SIN and COS values
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%
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% Revision:
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% A - initial design (copy from PS3)
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% B -
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% C -
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%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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clear;
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word_lenght = 16;
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table_size = 9; % 2^n
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x = linspace(0, (2*pi - 2*pi/2^table_size) , 2^table_size);
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sin_x = sin(x);
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sin_x = round(sin_x * 2^word_lenght) / 2^word_lenght; % round values
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cos_x = cos(x);
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cos_x = round(cos_x * 2^word_lenght) / 2^word_lenght; % round values
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%% Print values in HEX
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hex_sin = [];
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hex_cos = [];
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for i=1:2^table_size
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a = sfi(sin_x(i),word_lenght,word_lenght-2);
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b = sfi(cos_x(i),word_lenght,word_lenght-2);
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hex_sin = [hex_sin; a.hex];
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hex_cos = [hex_cos; b.hex];
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end
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%hex_sin,
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%hex_cos,
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fid = fopen('lookuptable.vhd', 'wt');
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fprintf(fid, 'type rom_table is array ( 0 to 2**%d - 1) of std_logic_vector(%d - 1 downto 0);\n', table_size, word_lenght);
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fprintf(fid, 'constant signal_rom_table : rom_table := \n');
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fprintf(fid, '(\n');
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for i=1:length(hex_sin)
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temp = hex_sin(i,1:word_lenght/4);
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fprintf(fid, '\t%d => x"%s",\n', i-1, hex_sin(i,1:word_lenght/4) );
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end
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fprintf(fid, ');\n');
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disp('Text files write done');disp(' ');
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fclose(fid); |