summ not finished

2020-06-09 01:03:07 +03:00
parent 13a5336975
commit 56e16842e4
4 changed files with 112 additions and 12 deletions
@@ -0,0 +1,70 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+% Author - Imants Pulkstenis
+% Date - 02.05.2020
+% Project name - Lab work No.3
+% Module name - LookUpTable generator
+%
+% Detailed module description:
+% This file generates lock up table with SIN and COS values
+%
+% Revision:
+% A - initial design (copy from PS3)
+% B - 
+% C - 
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+clear;
+word_lenght = 16;
+table_size = 9;   % 2^n
+x = linspace(0, (2*pi - 2*pi/2^table_size) , 2^table_size);
+sin_x = sin(x);
+sin_x = round(sin_x * 2^word_lenght) / 2^word_lenght;   % round values
+
+cos_x = cos(x);
+cos_x = round(cos_x * 2^word_lenght) / 2^word_lenght;   % round values
+
+%% Print values in HEX
+hex_sin = [];
+hex_cos = [];
+for i=1:2^table_size
+    a = sfi(sin_x(i),word_lenght,word_lenght-2);
+    b = sfi(cos_x(i),word_lenght,word_lenght-2);
+    hex_sin = [hex_sin; a.bin];
+    hex_cos = [hex_cos; b.bin];
+end
+%hex_sin,
+%hex_cos,
+
+fid = fopen('lookuptable.v', 'wt');
+    fprintf(fid, 'module lookuptable #( parameter    phase_width = %d,  data_width	= %d)(\n', table_size, word_lenght);
+    fprintf(fid, '\tinput               [phase_width - 1 :0]  phase,\n');
+    fprintf(fid, '\toutput     reg      [data_width - 1 :0]  sin,\n');
+    fprintf(fid, '\toutput     reg      [data_width - 1 :0]  cos);\n');
+    
+%    fprintf(fid, 'reg [%d :0]      sin  = %d''h0;    \n', word_lenght-1,word_lenght);
+    fprintf(fid, 'always@* begin\n');
+    fprintf(fid, 'case (phase[phase_width - 1 : 0])\n');
+    
+for i=1:length(hex_sin) 
+    temp = hex_sin(i,1:word_lenght);
+        fprintf(fid, '\t%d''d%d : sin[data_width - 1 : 0] <= %d''b%s;\n',table_size, i-1  ,word_lenght, hex_sin(i,1:word_lenght) );
+end
+    fprintf(fid, '\tdefault   : sin[data_width - 1 : 0] <= %d''b%s;\n ',word_lenght,  hex_sin(1,1:word_lenght) );
+    fprintf(fid, 'endcase\n');
+    fprintf(fid, 'end\n');
+    fprintf(fid, ' \n');
+
+    fprintf(fid, 'always@* begin\n');
+    fprintf(fid, 'case (phase[phase_width - 1 : 0])\n');
+    
+for i=1:length(hex_cos) 
+    temp = hex_cos(i,1:word_lenght);
+        fprintf(fid, '\t%d''d%d : cos[data_width - 1 : 0] <= %d''b%s;\n',table_size, i-1 ,  word_lenght, hex_cos(i,1:word_lenght) );
+end
+    fprintf(fid, '\tdefault   : cos[data_width - 1 : 0] <= %d''b%s;\n ',word_lenght,  hex_cos(1,1:word_lenght) );
+    fprintf(fid, 'endcase\n');
+    fprintf(fid, 'end\n');
+    fprintf(fid, 'endmodule');
+    
+disp('Text files write done');disp(' ');
+fclose(fid);