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基于单片机的电子钟仿真原理图如下(proteus仿真工程文件可到本帖附件中下载)
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9 h; {" [/ P2 Q蓝桥杯任务单片机源程序如下: |
. g- b# B! P; C- d#include <regx51.h>
9 l7 R- F( `3 D; y" l1 S#include <intrins.h>6 s/ L4 d, U! m1 V* Q' m7 ?
, j5 w. `9 V) \# G! P; k7 ?' ?" E
sfr AUXR = 0x8e;
8 H" m: s# R5 [* H, v# V/*数码管显示字符转换表*/
3 W5 D/ u) a% Eunsigned char tab[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40,0x39};
, J) X! Z. P' a/ q+ Tsigned char num[] = {10,10,10,10,10,10,10,10}; //数码管显示缓冲区
; |- x8 G1 E( h3 _/ E4 T( qsigned char timeclock[] = {0,0,11,0,0,11,0,0}; //闹钟时间
! R5 G4 ]7 q4 @ hunsigned char TRH0,TRL0; //T0重载值的高字节和低字节# h$ |* Y) w/ `. j# T' |
bit clock = 0; //闹钟时间到标志位+ H; {3 {: u3 ~# P
bit flag = 0; //1s闪烁标志位
/ j6 p, X6 j) z# e' kbit flag200ms = 0; //200ms定时标志位
% I% B: B5 Y; ^6 K' nbit timesetup = 0; //时间设置标志位
$ G% x6 z; N7 g8 `' y" }* Hbit clocksetup = 0; //闹钟设置标志位
8 x& K1 t" \0 T# Vunsigned position = 0; //设置小时,分钟,秒标志位(‘1’小时,‘2’分钟,‘3’秒)- Y( U- O9 j, @$ E9 b6 W2 k
unsigned char Temp; //温度值
; s' E% e( ^* ^: t: \+ kunsigned char Time[5]; //时间值
t9 V W3 P; n7 T2 I7 O( w2 U& B$ V# ]( Y G+ B$ J( i( j7 ^
void key(); //按键判断执行函数
5 Z' k' S& w/ V- P0 n! ivoid Ds1302_Display(); //时间显示函数7 z+ e1 k- d1 j' V/ |+ v
void Ds18b20_Display(); //温度显示函数3 a! P3 F: s" ^, J+ c6 z! o
& e6 Y; E2 V5 Q% F; nextern void Ds1302_Init(); //DS1302初始化函数
2 M, r* B H8 @. _0 r& f5 Uvoid Ds1302_Time(unsigned char *time); //带参数的向DS18B20写时间 ' I. M. T8 _, M; b5 t
extern void Write_Ds1302_Byte(unsigned char temp); //向DS1302写入数据; v1 P J/ F/ f+ C! [8 \& g
extern unsigned char Read_Ds1302 (unsigned char address); //从DS1302读取数据9 n8 z( o* K6 q5 u5 Y3 T
extern unsigned char DS18B20_Temp(); //读取DS18B20温度值: l3 u$ w; g; }6 R
- X) e- i- @, ]/ [: P9 p
+ r* F6 r" W2 i& A" p6 C5 f/*T0初始化函数 (ms = 中断时间)*/5 U7 w+ r( U6 N; o y9 C4 E1 I
void Time0_Init(unsigned char ms) b: r+ z. k/ I3 z% Z
{
. p) D( v# a4 m6 A$ _ unsigned long num; //临时变量9 n6 C! P+ s9 q( A- I6 c( q4 A. P3 v
num = 12000000 / 12; //12分频 定时器计数频率& r, o5 O8 M5 E
num = (num * ms)/1000; //计算所需的计数值
6 s# a8 q" t: u5 ~2 `# c num = 65536 - num; //计算定时器重载值
" z; e6 v* v- B# M8 G TRH0 = (unsigned char)(num>>8); //定时器重载值拆分为高低字节7 Q; y% d) A; ]( N" S) }/ C
TRL0 = (unsigned char)num;
" o$ U6 M# I7 p# z1 _3 J TH0 = TRH0; //加载T0重载值 - `! Q" G: u1 \7 @) J% N) i, f0 P' i
TL0 = TRL0;
/ E& J: }% X; m. m AUXR &= 0x7F;
% G4 I6 ^) E. z0 L- g! k: \3 J TMOD &= 0xf0; //清零T0的控制位
- a" {/ [9 z* }$ T TMOD |= 0x01; //配置T0为模式1 1 v% y a* p" U) E7 G* Z$ Y; ~( y
EA = 1; //使能总中断
" U4 \7 J0 n' b( t, y ET0 = 1; //使能T0中断
- ?5 w9 r- K% y: k! m" g TR0 = 1; //启动T0& d1 y; e' z7 g6 i
}$ M# ?4 T2 ~" X" w3 [
* X( G, a7 E! k/ O+ Lvoid main()3 {6 }! t, E' l+ K$ ]; i
{8 k6 }( D8 J' j1 G+ M. @
unsigned char i,k=0;
! p3 ^' j9 ]0 j) Y, j* y# K+ n1 m, S* q2 W# j
Time0_Init(1); //初始化T0,定时时间为1ms! b" w4 }7 v/ j5 d- j/ ]
Ds1302_Init(); //初始化DS1302/ ^, r6 `: q9 q) Y3 q+ \! r
while(1)3 G, I& Z& E% V( K" K/ a$ Y
{- X6 G" u6 Y; [
key();
S; N" T9 G) V# @" O8 A for(i=0;i<8;i++)* X* L9 f; q. R9 L: H$ }) I
{
$ l9 R4 Q0 w4 E if(num==timeclock)% t( u) O& L! O4 U; Q6 r" [' X
k++ ;
: N$ W2 z. Z2 b& W. y' v) p else; z! G8 `, ~* N5 p& K I0 j7 O- z
k = 0;
# w, J c+ s1 d& n0 E }5 p4 W9 n# n0 P
if(k == 8)
3 ]5 i" f; _% f2 c1 `4 a" U clock = 1;
# v- A8 l# T+ b4 @2 o* v! O/ i) Y3 k% I9 d. i; A
} * w. f) t& D7 H, u) o2 d
}, I2 S# r8 {' W
/*DS18B20显示函数*/
1 D+ w/ t0 l; o3 E4 E2 E- Yvoid Ds18b20_Display(). W, Q0 u6 S5 M! J4 F+ G% @2 u3 n9 k
{$ e3 S* \7 g1 s: `
unsigned char i;
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if(flag200ms != 0)$ j, ^: A& U [* C
{
2 z8 z# H: Q, `$ ^7 y. ? flag200ms = 0;& f. ~8 {: J' U' f$ h) C( V9 J
Temp = DS18B20_Temp();+ N6 Z$ L: }1 C' x+ X3 R
6 R6 C7 O" c& U
for(i=0;i<5;i++)3 W7 |0 K& Z5 o0 T: ]8 A1 ]
{
1 l" A' a. b: z/ D" \ num = 10;5 }& Y* u& |* W5 `
}& q3 J2 Z' y; h, ^4 G) f& d
+ Y9 Z$ E8 A; C1 U, Z5 x
num[5] = Temp / 10;
) T4 Z, l* { b* c num[6] = Temp % 10;5 x' o. @* V/ ^7 x- Q
num[7] = 12;
$ z. ~0 R3 m M/ K }
" ^8 a+ I6 y4 K+ o}; t( K4 d6 Y( t: u- `( M
/*DS1302显示函数*/& U; N$ k0 k" D$ T+ q/ u" R: n
void Ds1302_Display()# {" z+ d, N) V) B5 U0 I0 x
{
2 h# m. u- U) u( w# m+ s3 | static unsigned char i;
' I( d" V1 j5 ^6 A( z3 L static unsigned char pers = 0xaa;/ k J. l; z- g! N# w, ^2 F3 n
/ N Q2 i6 @+ q* U
% K& }' }& x5 G# j N if(flag200ms != 0)
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flag200ms = 0;! ?0 f/ `& Q: G# B/ [7 Q+ h( U
for(i=0;i<3;i++)
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Time = Read_Ds1302(i); //每200ms获取时间
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- _' S. w# S0 K1 C9 f' b+ _ if(pers != Time[0]) //判断时间有没有变化
( T4 p8 c1 p; `$ t( @1 j& t7 m {
( N/ ?3 F2 O1 [3 Z num[7] = Time[0] & 0x0f; //秒
: j5 i9 m( g7 ? num[6] = Time[0] >> 4;
s$ {8 R) i [ num[5] = 11;0 b$ @2 ~0 y2 C) n: i
num[4] = Time[1] & 0x0f; //分 `9 f- P- N, d
num[3] = Time[1] >> 4;
+ k, p% [" n( e4 }# Z+ J num[2] = 11;
+ O1 \; ~) M9 y0 q) V# [& R num[1] = Time[2] & 0x0f; //时6 w9 H2 Z% |3 P) ^+ x
num[0] = Time[2] >> 4;
% P* I6 ]* d7 N, J
. k! T* f( H, z5 L l pers = Time[0]; //将变化值重新写入判断值8 Z9 w+ ]7 f3 S9 R5 a# M0 |) ~
}
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}7 `4 ]% ^9 ~( f5 i! \% P6 R' `
/*数码管显示函数*/
8 \- P* |8 v& b) C1 p3 nvoid Display() , n* T2 ~9 j; R# c4 y
{+ `9 E8 S. ^/ J& H8 c
static unsigned char we = 0; 8 I5 R9 W# w( X# x7 n* r
[+ r8 |% f, v( S0 j ^1 G; Z
P0 = 0x00; //清除鬼影4 l: v9 {( {) E0 K: y- b+ o
P2 |= 0xff; 9 `- p! J! N; Y/ i
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P2 &= ~(1<<we); //位选择
: R* Y* [5 H* L! A7 p* n if(clocksetup)2 o6 _$ G0 `+ a" W6 W* l1 O
P0 = tab[timeclock[we]];
5 G" ^; T' m- m+ q& Y else
% h/ s) @4 R& W2 x' N3 m! L, b) ] P0 = tab[num[we]]; //显示数选择 " A, a; L; a g, {, G
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if(flag) //进入设置状态
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switch(position) //判断是那个设置位# Y1 s# @% z. j) z; R
{
* X3 f0 Y& U* |7 | case 1: P2 |= 0xc0; break; //秒
% I: _# [( p. O( Z9 A case 2: P2 |= 0x18; break; //分
- Y7 V/ L: v$ H2 S& Q! m case 3: P2 |= 0x03; break; //时" c2 C- L5 L/ h. ], l, X$ ^
default : position = 0; timesetup = 0; clocksetup = 0; break;) z! s: z1 ^# p
}
) z; p& f9 T5 ^8 m& [ }
" ~* w w% I8 O6 a. N! b O5 r
. G( k4 K% s. s7 L! Y1 c: ^ if(++we >= 8) //八个数码管 0 x# Z6 F* v1 t# Y' [: I! R
we = 0; ) U% m5 T4 n F$ \/ w, d( r
}2 x' q$ _& q6 r. P4 n) U
* a3 ~* k0 Y. c% T( G3 |
/*T0中断函数*/
+ f2 E- F& ?/ n. r3 n. Xvoid Time0_inte() interrupt 19 `) o+ N' U3 O6 K7 F
{
1 T, m# p2 D$ w' l t static unsigned char ms = 0;
+ e+ ?$ Q. T, W( Y+ @5 X" I static unsigned char flag1s = 0; ~! w) a' p& b# K
static unsigned char flag5s = 0;
I* X; U4 I, b5 @7 d5 f T- m3 e) i J! }+ C$ P7 B7 E0 w
TH0 = TRH0; //加载T0重载值
% [6 a$ O/ C" q* b) m% @8 c TL0 = TRL0;
, ~" g6 d( s( N+ e$ e4 q2 ]
- a! W" w6 t/ n; w; a% u Display(); //数码管显示
- h* j+ J0 z1 X" |# t& e
) t0 Z. Z! n) f+ b" |6 P8 y5 \ if(++ms >= 200)5 ?+ n1 x1 u2 W h/ h* N2 C2 b
{
* T, c- I5 H ?1 E& b flag200ms = 1;
/ c: h1 G5 o7 |; ]3 C3 Z3 F ms = 0;" O, ]: r: k' @ x- k$ t
if(flag5s < 5 && clock) //闹钟5秒时间判断
8 P! y4 E( u- B {* \% b' j" L- S
P1_0 = ~P1_0;& |4 Z6 n! c4 ^) Y: `% ~
}
' y0 s: {3 u: _1 F else
7 ~9 Q8 n4 J3 Q; `+ S+ r# m7 g7 v {
1 L! g) R# Y- Y clock = 0;0 J4 O5 t2 |8 L1 E" p7 O9 p4 V
P1_0 = 0;
$ R) {) m- r( F; Q! Z }7 W7 R% L$ F" g) q2 W5 I7 ?6 u! Z
if(++flag1s >= 5)! P3 [: U7 q8 x5 N2 s
{) A( O, v$ b5 k, E5 a- i1 v
flag1s = 0;* L$ y5 E. [- ^6 |" _6 E
flag = ~flag;
/ a. E+ x! t' Q, \+ K9 d% l if(clock)
7 G; u; D# n5 W& P! v flag5s++;3 X6 l1 @/ b! ]' ?( i/ Y
else
- J; G$ R* s5 k" t+ t flag5s = 0;
% h# z8 h! D* m7 j {9 ~! x/ U }& W8 K& _+ l1 z0 z7 E
}
5 p+ T4 W( C& L7 E# m0 ?% w) U" l}8 D8 c7 |6 I: d4 g
//向DS1302写入时间$ f" s% \# w0 L5 b! f$ l. M# E
void TimeWeite()
/ E, W7 u# x0 T7 @- e8 X& t& \2 |{
# }; h2 D2 Q' V* j5 F. p6 {) I unsigned char ti[3]; , U( }6 c& a; A% N
//将两个分开的时间合成在一起
3 G; j! o$ f$ g2 p) Y+ i0 h ti[0] = ((num[6]<<4) | num[7]);$ D; S* j7 j' b% J* M \
ti[1] = ((num[3]<<4) | num[4]);% ~4 O8 B) y3 _5 W/ E
ti[2] = ((num[0]<<4) | num[1]);
t$ U$ F, b7 M2 n) F$ T( }* M7 N( d
Ds1302_Time(ti);
0 R; d" W7 N7 K, _7 {2 _}
" z: P# P7 x U' a6 ]. T B. D( @$ R" u
void key()
& j$ J4 S A* l# I) G. x8 |{& W. \) i( Z7 f7 O
if((P3_0==0||P3_1==0||P3_2==0||P3_3==0)&&clock==1) //闹钟响应,进行关闭
9 V6 @4 D9 F: N1 v {
( ~7 M' a5 }- L6 L8 Y' w% z! |9 @3 j clock = 0;& C g7 X( m$ E J( K, |8 A0 |3 N" G
while(!P3_0);while(!P3_1);
; S1 e7 r$ D1 a. {- Z while(!P3_2);while(!P3_3);
' S' ^$ Z2 d# [- n }- H/ M% X2 I7 x, V n; H
4 J* i! i/ V; Y$ n2 M4 n2 `
if(timesetup!=1 && clocksetup!=1 && P3_0==1) //按下显示温度值,松开显示时间
5 z, V6 M% j" e# B- f1 j {7 c7 F5 E# T6 E% r
Ds1302_Display();0 ?& |. a$ x& a5 r' D
}else if(timesetup!=1 && clocksetup!=1 &&P3_0 == 0)
5 l7 W/ @, z/ B* s {7 }* A1 x7 c; Z4 C5 u6 K! ~/ ^1 n& E' `+ E
Ds18b20_Display();
( L' D9 E3 @( _1 b% b7 @% O% E9 D }
& s: q! j' [9 b* @! v7 h if(clocksetup !=1 && P3_3 == 0) //进入时间设置/ ~- R [+ L7 l" s& I
{6 ~5 v( a# P, J+ S; B6 ?
timesetup = 1;5 l4 a4 H0 v; d* A6 Y
position++;
a+ f. B( `* x- R/ T+ M if(position == 4) //向DS1302重新写入时间- }% @6 @- Q1 [3 i$ I0 {
{) Y2 L' S) {3 I- M- V* o# w. v
TimeWeite();1 N( g! z# t! S( G+ Z- C$ J$ {/ K
}
( H4 Y& {: e8 j( C while(!P3_3); \2 K: ] D& E9 n# h
}
' O* _* K6 v/ ]" C N7 }8 F! | if(timesetup !=1 && P3_2 == 0) //进入闹钟时间设置
t) F/ k3 E/ r& g {
5 i% H) s% M+ V9 q. X9 G clocksetup = 1;+ g7 e9 w) w1 Y& R8 n' P, [
position++;9 S1 z8 i1 E: G& ~; r
clock = 0;2 r# y7 w3 y- ~1 [6 ~7 m
while(!P3_2);, K$ x: V/ L2 w9 d. D
}9 N3 h4 w% `9 }, m" g q
if((timesetup==1||clocksetup==1) && P3_0 == 0) //进入时间设置, 时间+1
9 [! Q' s! \' K# d5 w% t r3 A4 n3 w { 4 H" n `, T f6 w6 T
if(timesetup) //实时时钟设置
: D1 U. J$ ^5 ~+ N8 d, z. f {
+ t; q* [, w) a: ^! R; } if(position == 1) //秒( y( q& \: f8 ^' M
{) B/ f9 P) _8 v& U7 W
if(++num[7] >= 10)
2 T' [: w u' S) B {
! E$ v5 F' B8 ?1 t2 ~) M; B" Y num[7] = 0;8 ?. `9 r1 Z# L8 v
if(++num[6] >=6)
3 m0 Q) }& m3 h# V3 V5 Y+ t num[6] = 0;3 {) p2 m: J# [! ]; X/ C9 a. d4 G
}$ _7 u5 D$ u' u6 l, j
}else
8 S) Z- B# h2 R- n# K if(position == 2) //分
G/ q# ?& z; o2 d5 l {
$ j6 R1 W8 H( v7 m9 Y$ ^3 \3 U if(++num[4] >= 10)( F. c, i; b4 a6 A: d
{
) m+ F: K; _' M8 ]& w, D: R num[4] = 0;% ?: j5 a# J& l
if(++num[3] >=6)
5 U1 I2 g5 U+ | num[3] = 0;6 P6 g0 W4 ~! m& }+ F; d( n
}6 c9 L: Y2 T" G& [
}else
, c$ x5 _: m0 e3 K) D if(position == 3) //时
/ W; Y* s# U5 J6 M" g5 ~ {
$ n4 p8 E! |! X4 Y' i! u if(num[0] == 2)
5 C6 t' B9 q' x {0 [6 @- u# ~" q# b7 ?* e# p
if(++num[1] >= 5)# o! I0 e4 h4 S
{6 v% z& `% S2 o8 d& ?( }
num[1] = 0;. ~* w! j( e8 J. c. j
num[0] = 0;6 i3 _% f' G2 U6 q, d+ X4 O+ H( z5 g1 q
}
+ Q: Y0 t# m- H4 B& f4 j% [ }else
2 P7 p9 E& J% [1 g if(++num[1] >= 10)
/ a* ^) J ~6 z6 X {
7 T# t- `4 o% {- D/ v& L num[1] = 0;3 f7 [1 x; j/ e, }
if(++num[0] >=3)
: `; E0 N+ D8 L% D6 I8 } num[0] = 0;6 N4 |2 @( M- P' t! [, o6 U0 p
}, M3 p- p3 [6 k& N& n. e; V" p! y
}+ @' L' I# D6 l9 x/ r6 V1 w
}else if(clocksetup) //闹钟时间设置9 p3 L; V% J" p' i
{
7 k8 f/ b5 X' V2 c- x+ M1 C% e if(position == 1) //秒# Z+ ]3 J _- y y5 t1 q
{
# \- R' d' s: M# R if(++timeclock[7] >= 10)$ n8 |* M1 v; V; T% g( a; h) Y
{
+ P: f2 C( | h2 H' {" X8 D: S1 j timeclock[7] = 0;
- b) l" k" q; ~ if(++timeclock[6] >=6)
8 N& f# V. C7 P. O* \! Q0 _7 q timeclock[6] = 0;* r: g' R. x& F s
}
* ]; d4 v# R( V5 J; I/ ^+ v" p }else# }6 z! b" p( C
if(position == 2) //分. l8 B9 f6 ?7 m- b3 X
{* X7 y2 {1 G( p, E! N: f" L: {5 P4 n
if(++timeclock[4] >= 10)
% b% W. W: z+ w6 r' K# {$ i {
9 i! [. T5 c. x* \* T7 w) d timeclock[4] = 0;
4 }) ]! \+ N/ c if(++timeclock[3] >=6)# f/ J+ i3 j0 x0 q' W- Q6 @
timeclock[3] = 0;6 {# e( v) Y, e5 W9 [
}
, ?* [- P g* w. ~, s% _% g3 g }else
) Z$ T8 D5 G6 s' ]$ U' }: g if(position == 3) //时
7 b8 u; q: [, \! |1 z% C/ ~6 T {+ f- L* _0 X' }. x2 t" L# _$ a: }- I
if(timeclock[0] == 2)
; O" n2 R6 [$ G" I+ X {$ ^% ^# |+ g- @/ Y6 L- T9 s+ U: e3 T
if(++timeclock[1] >= 4)/ V( U) E; x+ v+ Y( [2 y" p
{. n# ?" r. w" v0 W
timeclock[1] = 0;
9 U2 i5 A- e5 m% {5 e) K* o timeclock[0] = 0;
4 g- ~/ k% |& V2 x1 ^ } % o W/ I9 h; N0 H+ e/ e
}else
; d: o: \1 _2 v/ D; w9 ?, L if(++timeclock[1] >= 10)
8 Y5 D' J8 Y6 y: K {+ ?& w) Y/ F b# Y' Q' i
timeclock[1] = 0;
% x/ n9 }5 ^$ Y; C) U- K- D if(++timeclock[0] >=3)
1 k" ]- b5 ~+ B. G: E' D1 S: v2 F+ M timeclock[0] = 0;+ u d" i( M# P1 k. z: c/ J% Y
}
+ ~# ` A! _6 K& R! Y } 7 i) Y- |' F+ B$ K$ B4 z
}
5 _3 X, B( C7 u- x, q+ e while(!P3_0);1 w9 v6 L' K' ~. s m
}
; q& t% H3 D0 x8 \# t' F3 a% C if((timesetup==1||clocksetup==1) && P3_1 == 0) //进入时间设置, 时间-1
/ H7 u0 t# R% P5 f$ k8 N { 5 A: J! t& @3 a+ B
if(timesetup) //实时时钟设置
* w u2 ^* O& t9 p8 Q/ a {
5 _* U6 |2 n& @3 b if(position == 1) //秒0 K: z) _1 {1 F* T" C' g9 t! s, p
{
, g8 k3 ^( m1 @ if(--num[7] < 0)) K/ K+ q3 \* A
{
& L5 O! d2 O" p% s f# @; ]! C num[7] = 9;0 e3 c. t0 m1 M |
if(--num[6] < 0)
h' ?0 v( K z6 \ num[6] = 5;8 T. ^+ V& R; f1 a; }% e2 P
}3 w( @% T: e/ [% P
}else
* p: c# Z4 b: q- V1 [, t; a* q& c if(position == 2) //分 ~2 @" @% q* z9 I
{
6 _: Q w) j/ y! s if(--num[4] < 0)
1 |7 r1 z' c: j {+ Q% @- [2 K3 X% l1 [# z! {/ _& X* V
num[4] = 9;2 w V' d# ?- V5 W/ \' G' K
if(--num[3] < 0) [4 Q) d% R" ~# ~4 p0 h
num[3] = 5;9 o2 I' s+ L2 {, V
}
) a) L, `8 V2 m5 l+ x0 l }else9 B8 C4 ~2 a8 g/ Y6 ?: y3 G0 Y
if(position == 3) //时- t6 f9 o1 V3 K; D1 W6 m4 Q, U7 t
{
Y H- T2 Y! c9 W2 j8 o! U if(--num[1] < 0)
+ v6 \: {# V$ ^# l5 U, u. } {9 b) r, p" L- i! t# J1 ]! k
num[1] = 9;
# F# n+ v s- X4 h if(--num[0] < 0)
7 ^+ B8 U/ ^: k6 J5 o6 R {
% c; M$ x; t. h6 Y* k9 U num[0] = 2;
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