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這個程式是我當初作DAC時我老板給我的範本( j" ?& ~1 H0 a2 P0 T. a! z
當然,這只是一個產生DAC的數位碼的sin波產生器的MATLAB程式
' A2 h9 n& z" f: L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+ H. x& }3 P6 H0 W2 C/ R
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
" z- k3 ]$ A& V' j9 l0 |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( Z/ H* A8 g. Y
! `5 g/ f' c! d) F) H1 V! @%clear all8 n: B) ~1 k! @
%fid=fopen('test.txt','w')% j; j( o# a7 ^/ B+ H7 d3 Z/ V/ Y
5 T2 Q+ i7 t2 \) s% b
%% 10MHz data-input speed
" D4 J2 u* w2 D/ z/ V%for M=1:1:1024" d1 n5 E/ i4 j3 e
% T=M-1;. ^6 T w/ [" q$ {6 P7 Q0 \
% from=(50*T)+45; %DUAL DAC measure time8 f' t- n4 R: a: C/ j a: D% G, M
% to=50+(50*T);
. d/ k' g7 u; ]- s% fprintf(fid,'.MEASURE TRAN A%g RMS v(daci_outp) from=%gn to=%gn\n',M,from,to);+ s; F$ c: j1 q7 W
%end
2 \/ y* i7 k# q2 \# a9 F( w6 h
- N7 M4 |; y+ h( T%fid=fopen('test2_2.txt','w');
8 A! O! o3 d; g) F7 R+ `& a9 [4 M; p- ]%for i=1:12^20)% X* A3 `5 ~+ L3 j; R- I& Y
% value=rand(1);
- f' Q: s7 h: m* n7 ?0 t# |% fprintf(fid,'%g\n',value);
* F2 N/ u9 U( m" L1 t%end0 c6 B) N5 k( i- d! S
%fclose(fid);4 G& [+ w/ S) |, M+ k5 F h
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* W6 z; L( e' j; }( qclock_1000=1000/4000;
6 Q$ D F7 s# J! T( [ o6 k%%fid=fopen('test1.txt','w')5 W$ T1 f( I+ A) w4 a" Q, w: e
fid=fopen('Measure_4G.txt','w');" |1 r4 t- _! j# D, Y( u6 S' S! P
for N=1:12^20), P. _* m! i4 q) h$ c8 E
value3=clock_1000*N;! O8 K6 L0 |; F
%% fprintf(fid,'%g Measure_Point=%gn\n',N,value3);
6 d" C3 ?) w/ Z$ U4 \6 l fprintf(fid,'%g %g\n',N,value3);7 G7 g& T* `, ~0 z& {
end
2 z# N# F2 y1 O- U$ Hfclose(fid);9 C# v2 s d! Z4 l
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2 ^* P+ ~7 o7 jclock_88=1000/88; + Y) {/ j4 U* i
%%fid=fopen('Measure_88MHz.txt','w'); E# X$ k- J, J2 z; W4 {
fid=fopen('Measure_88MHz_round.txt','w')
& { T7 W; v, I0 @for M=1:12^14)
! T) O! V3 u& W2 y, Q3 `$ k7 J value1=clock_88*(M+1);9 f3 ]2 x4 Z" T; K% {5 e, B( U- T
value2=value1-(clock_88/8)*1;, u; [$ h& m. Z- O k8 O5 z
value3=round(value1-(clock_88/8)*1);
1 Z! R' s2 x- v8 d6 N7 q7 {, e fprintf(fid,'%g\n',value3);
3 @- O, X9 t7 E+ S: Y2 r& r6 L6 z%% fprintf(fid,'%g Clock=%gn Measure_Point=%gn Round_Value=%gn\n',M,value1,value2,value3);
9 ]7 F9 E1 t8 \# ~: n0 E5 kend
1 ?# k) y8 G, H/ L5 e `fclose(fid); |
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