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這個程式是我當初作DAC時我老板給我的範本6 K" A% h8 g" R I# T! ]% O, \8 c+ S
當然,這只是一個產生DAC的數位碼的sin波產生器的MATLAB程式
0 s$ x+ l6 h3 p. C測試DAC的程式則是另外一個程式,但因為原始程式並不是我撰寫的,故而無法貼在這裡分享
1 N2 H L2 `. l7 x% S$ Q( f8 B如果,你想走類比且DAC or ADC這條路,熟悉MATLAB是一定要會的工具程式, Q3 {1 u8 j( ~9 X
若無法熟悉操作MATLAB這套軟體,對於日後設計DAC or ADC將會是一條很艱辛的路程
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; T9 e5 N! a5 H( e6 K%clear all
" h' b1 S- `8 @& o* G# E%fid=fopen('test.txt','w')
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5 j$ K" T9 N, ]; q% R%% 10MHz data-input speed
$ N# @4 N( n* |: [ d%for M=1:1:1024) U, O! H7 z/ B5 z
% T=M-1;
2 L2 ]1 Z# D5 b3 f" b# j7 w4 b d% from=(50*T)+45; %DUAL DAC measure time, K2 \/ w# U3 f: H
% to=50+(50*T);7 ?1 {8 l3 U3 J! i; c
% fprintf(fid,'.MEASURE TRAN A%g RMS v(daci_outp) from=%gn to=%gn\n',M,from,to);
7 C: J, I; u. y2 `) ]2 ^) E+ [- ?$ n%end
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/ n( A% L( @8 M0 _7 s g% [%fid=fopen('test2_2.txt','w');4 w' O3 U' K) x% t$ C: T; o
%for i=1:12^20)2 L( T7 |& ~, s- i( f7 R+ v
% value=rand(1);0 l6 O `9 ?/ P- F
% fprintf(fid,'%g\n',value);$ r6 p; k- q* b! a
%end
% m4 T5 O9 x, Z8 G0 ^+ R%fclose(fid);
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clock_1000=1000/4000;
0 ^+ u+ f9 l7 r) i" n0 H2 n%%fid=fopen('test1.txt','w')
! m. q% ~7 ~; v; A. [: D8 S; Xfid=fopen('Measure_4G.txt','w');
3 M: G D+ f5 ?0 H% B) _for N=1:12^20)3 {' u: B2 ^, L8 S
value3=clock_1000*N;( @- e" g0 u& k( I
%% fprintf(fid,'%g Measure_Point=%gn\n',N,value3);' ?% P% y, b2 J6 n$ ~
fprintf(fid,'%g %g\n',N,value3);
& u! M# x+ I" s6 ?end! J/ l! n Q* h- {% O2 F- Q
fclose(fid);
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clock_88=1000/88;
- b3 S. v8 X( Y) A8 z5 _0 `%%fid=fopen('Measure_88MHz.txt','w')2 b! R2 Z1 ]8 [% h
fid=fopen('Measure_88MHz_round.txt','w')4 y; Y9 B7 a7 g$ B/ m
for M=1:12^14), v5 M" Q. X# }, b
value1=clock_88*(M+1);
_* @! M5 ]: ? J6 K* \ K& G value2=value1-(clock_88/8)*1;
8 m1 _/ V3 b5 } value3=round(value1-(clock_88/8)*1);
) Z* G0 f/ N6 J( j. `- B9 M fprintf(fid,'%g\n',value3);* [0 z* A: C( E( B
%% fprintf(fid,'%g Clock=%gn Measure_Point=%gn Round_Value=%gn\n',M,value1,value2,value3);
4 k% }( J2 y0 l# P% S7 W6 e5 qend* A/ m2 e# e- c7 W
fclose(fid); |
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