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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）; X5 h8 {& Q2 D, T
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' j' M$ _9 `5 K1 {$ a! ~蓝桥杯任务单片机源程序如下: |
4 S. | v3 z) ]* Z! u5 ?
#include <regx51.h>4 G) r, o" ?& f" B, r. @( U9 k
#include <intrins.h>
: w- t( p' u. j* `' h8 k6 X& x; E x" v
sfr AUXR = 0x8e;
; p0 n; g0 W1 J U% G6 r/*数码管显示字符转换表*/
9 j1 ~1 |' Z$ j7 X* q2 Qunsigned char tab[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40,0x39};4 F. f6 ~3 t; R# B
signed char num[] = {10,10,10,10,10,10,10,10}; //数码管显示缓冲区
# B) D9 A6 J% {/ j, T/ d- Asigned char timeclock[] = {0,0,11,0,0,11,0,0}; //闹钟时间4 n! m a0 V7 t9 i" o% Y6 h
unsigned char TRH0,TRL0; //T0重载值的高字节和低字节3 J. q' q A5 Q
bit clock = 0; //闹钟时间到标志位
- O9 T9 r9 T& M( L5 ybit flag = 0; //1s闪烁标志位
) `2 j* o9 k& N% Dbit flag200ms = 0; //200ms定时标志位( r, b; }1 n$ j. ^7 _9 G0 K% g) h
bit timesetup = 0; //时间设置标志位
2 ~5 \5 o2 Y2 f+ Gbit clocksetup = 0; //闹钟设置标志位
; E: N; O4 o9 T! Dunsigned position = 0; //设置小时，分钟，秒标志位（‘1’小时，‘2’分钟，‘3’秒）8 G z9 {6 g! S2 P f
unsigned char Temp; //温度值# [8 P# [8 K+ H
unsigned char Time[5]; //时间值
! @' P' R3 R6 x; }2 D0 j; r
r1 }; h. U3 A9 D& Lvoid key(); //按键判断执行函数$ ]/ @7 J( O5 s& F) `! f U. Y: \
void Ds1302_Display(); //时间显示函数2 C" O+ X! f. ~. @% e
void Ds18b20_Display(); //温度显示函数
" C0 k6 s1 D+ [3 y. B- l8 a3 y. t! p0 I# {9 c( k8 G
extern void Ds1302_Init(); //DS1302初始化函数
/ h1 x* a$ O; }% lvoid Ds1302_Time(unsigned char *time); //带参数的向DS18B20写时间
. t$ A- ]4 i. ^# `extern void Write_Ds1302_Byte(unsigned char temp); //向DS1302写入数据! j# {2 I# ?2 m+ ], {+ u7 N. ]
extern unsigned char Read_Ds1302 (unsigned char address); //从DS1302读取数据" K8 T! A/ X0 R
extern unsigned char DS18B20_Temp(); //读取DS18B20温度值
: ]. N0 j j+ F3 E) k7 d8 b7 \7 }8 W% f5 q! S0 k# G3 W' m
/ Z5 \. @1 C) }) c
/*T0初始化函数 （ms = 中断时间）*/
0 E& k" g1 u0 ]void Time0_Init(unsigned char ms)0 o3 {1 r" X# k7 D% A
{
, `/ J3 ~: ? n/ [ unsigned long num; //临时变量
' j) j2 P* `: C* Z num = 12000000 / 12; //12分频 定时器计数频率
3 T c- a" O- @+ t num = (num * ms)/1000; //计算所需的计数值
% [# q) y+ C- ~ num = 65536 - num; //计算定时器重载值0 C6 T6 z8 |- n. Q+ M
TRH0 = (unsigned char)(num>>8); //定时器重载值拆分为高低字节
- d7 t, M( O0 Y* l0 ^8 Q' ?: J, E1 c TRL0 = (unsigned char)num;$ S: g* `. k/ K' a% x! s
TH0 = TRH0; //加载T0重载值
# @! w- W, z1 ]* ^4 H TL0 = TRL0;( t p7 o! b8 B0 M4 h% t
AUXR &= 0x7F; 2 @" x1 @8 ?! Z- B4 [9 @
TMOD &= 0xf0; //清零T0的控制位
% @6 y+ c" {1 R6 p TMOD |= 0x01; //配置T0为模式1
0 d; @" z2 y m3 F' [ EA = 1; //使能总中断. K- b( Z+ U; f( B2 X" u- y
ET0 = 1; //使能T0中断
+ x( h9 ?3 G) Y" }- X TR0 = 1; //启动T0
+ X" _* `3 p% t% O3 }# C- t}
! F$ D5 J8 O% [7 x# W$ D! r3 J8 V$ X6 n
void main()0 ]: W" m; ~7 n2 V! @3 s! F: I E1 a
{
" h& V& E Z6 {+ a3 ^ unsigned char i,k=0;
4 s/ s6 V4 L$ @' s; X: V: I! q+ ^: ]: R! N
Time0_Init(1); //初始化T0，定时时间为1ms4 }+ N/ z& l# Q1 c5 B. W( _
Ds1302_Init(); //初始化DS1302! N, ?0 e0 Z+ `( ^& Y/ ^
while(1)
' T. n; [& C0 H" |, `5 p {2 R6 t$ M2 W0 L0 \+ e
key();
! E; l/ @* p- s( W& G1 X P5 ~ for(i=0;i<8;i++). d- }7 e5 |3 u9 M7 ^) j0 G, Z5 }
{7 @- j- L) r) c0 a3 q
if(num==timeclock)
8 M$ i' p2 @% o; A' |4 m6 i4 M k++ ;5 S, a8 O& M5 z- y/ p( G3 s! I7 S
else
' `" l0 k" _3 l5 W k = 0;
7 B8 f% k @7 X0 R& @' w }
' D; t/ G9 w& d6 S6 w# j+ L if(k == 8)
8 e9 c1 x( Q1 g: |4 Y) D) Z# ]* [ clock = 1;
+ t E r6 w3 E' x6 b- F2 W% N4 ?0 @$ ~8 Z. @* o; p! m5 S. U' h# k$ e# B
} - K+ I1 p& S6 S3 C+ Z
}% x5 _' \( s; ^9 D! K8 s0 }# _
/*DS18B20显示函数*/9 c3 F2 \1 G$ W$ M/ Z7 g: K
void Ds18b20_Display(); C* S1 C) q# ^' |/ E2 B3 U
{
- Q( y+ f+ P( t: b e unsigned char i;2 B( M4 h! }3 y2 s4 e
. u6 C4 `% O- }# c6 N4 J if(flag200ms != 0)
; A, Y. g0 {* \% B/ p4 o; N% \' C {
, [ H* B9 c6 T/ i/ z1 U" O. d flag200ms = 0;
* i) C7 L2 Z" \; a; s3 S* M' y" W Temp = DS18B20_Temp();! M1 J O. w v& O9 I
0 ^1 e$ k. n) m+ F0 T$ K1 k for(i=0;i<5;i++)1 t/ m q& y' O8 K, H
{
/ T5 ] O5 P# q( }! L$ | num = 10;
9 \% s6 O5 G0 |( L }
; A4 |% V! K6 o* F; B' l
( ~: `0 V$ @2 w! D. }% i5 ^# x1 p num[5] = Temp / 10;
& y" Q' p# E. w num[6] = Temp % 10;
$ P+ B& a" \" @' _: ~ num[7] = 12;( a" }, Z. g/ f8 q5 W1 p
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}
( b( B1 r9 B Y6 Z/ v: H5 @, _! H/*DS1302显示函数*/
' K# h0 `7 R7 @( zvoid Ds1302_Display()
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static unsigned char i;
8 C: k: H! r# v& r static unsigned char pers = 0xaa;6 b1 b b9 F0 T6 y
6 o* j5 z, e" f1 w% _
7 i& O3 y, Y' D# |- z if(flag200ms != 0)
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flag200ms = 0;
* L' ^1 f: e% A; G9 w: I- z for(i=0;i<3;i++); ?. ]. x7 u$ f4 b
{
$ ~% Q1 D% R; [; | Time = Read_Ds1302(i); //每200ms获取时间: i! a4 H. j" A# b. z4 f
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if(pers != Time[0]) //判断时间有没有变化
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# k) I( T$ W2 w3 z num[7] = Time[0] & 0x0f; //秒
+ _. u8 h" Q6 g+ e/ o, i num[6] = Time[0] >> 4;% a: C! e& Y3 Q! Z% V
num[5] = 11;
; ?% j" C/ J3 K* f num[4] = Time[1] & 0x0f; //分. r! h% u8 k" V9 t
num[3] = Time[1] >> 4;$ j' {/ J! `# `7 b* g; j
num[2] = 11;
( }/ b1 n0 a* p0 A num[1] = Time[2] & 0x0f; //时$ j4 i& \& U3 Y3 y6 }3 H
num[0] = Time[2] >> 4;
# ]8 j9 P1 E& h; j5 m: z# @6 b) x7 n$ z* X' j' j3 e
pers = Time[0]; //将变化值重新写入判断值 ]3 i+ S8 u2 s+ _- c$ @2 @5 G
}
G& h1 z0 w n8 A; k3 C }
, F1 R1 a+ R8 I& e# q}; q4 V% M \: V1 e4 p: W6 a2 }
/*数码管显示函数*/
7 Q2 e( {0 W9 m1 Z2 r8 F" }void Display() 1 t3 c. [" ]% y3 w; X
{
: Q" x% x( g+ l+ x/ } static unsigned char we = 0;
6 _: n z2 J( l4 n6 k) T& V+ U8 Y% s% m! J8 j4 f1 D0 I& ~
P0 = 0x00; //清除鬼影2 {( [ n7 r7 z, i$ q# j$ b
P2 |= 0xff;
$ U. i% r3 C3 O
$ W3 b' W9 m. e9 |9 M% D, S. ^ P2 &= ~(1<<we); //位选择3 d# i) T* ^3 |) Z, g# v' d* L. l2 y
if(clocksetup)
6 ]/ A; z- @; q P0 = tab[timeclock[we]];
+ Q" N2 X) K& ~1 f! e" j else
: ]9 y' X5 u2 |6 F P0 = tab[num[we]]; //显示数选择
) U5 S! f( L. n4 o! ^
/ Z7 A& a' a+ f7 v) b' b8 r6 _; w if(flag) //进入设置状态
$ R4 @, M) E9 Y$ Z$ ~) Q1 X { q& ?) Y# F6 \5 V" v- Q( s6 M9 O1 g
switch(position) //判断是那个设置位9 C i5 |9 [( l6 |) s
{
* }8 ~& p; ?6 \ case 1: P2 |= 0xc0; break; //秒
% Q' y4 L8 c4 U. {/ e7 o; Z case 2: P2 |= 0x18; break; //分8 o- v, ?% Y1 N5 ^ s; Z7 \
case 3: P2 |= 0x03; break; //时
6 M- o* F8 l, l- o" H default : position = 0; timesetup = 0; clocksetup = 0; break;4 k/ J( }: \) o
}+ D# q. u) O9 S; J
}7 H9 A% ~- I: ]. i" i+ q# I: X3 i" t
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if(++we >= 8) //八个数码管
1 f1 J+ B c1 s we = 0; ' `1 l* ^( H9 `) P! Y
}3 s$ H! E0 m; \" n3 {+ B' w. Q/ O
- @! u% f& H5 z& \/*T0中断函数*/
0 d% ^: _3 y' h' |$ Tvoid Time0_inte() interrupt 1
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static unsigned char ms = 0;! C! l4 Z1 [/ f3 b. Z
static unsigned char flag1s = 0;3 X6 j. t9 D2 O, {. j
static unsigned char flag5s = 0;
, Y8 [7 U; d9 `5 ]
" r( h7 h+ r. h/ ^% d0 ] TH0 = TRH0; //加载T0重载值; J' x1 l3 p1 u- c
TL0 = TRL0;& v8 N+ m2 ?+ x3 S( k' W
O! h7 B- D# A% c4 ]1 y, q. F! a% ~ Display(); //数码管显示
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if(++ms >= 200): q: `2 F2 A# \/ m b$ O
{3 c7 R. c2 q* o' i
flag200ms = 1;& X9 w) _( q+ g5 k
ms = 0;4 o0 O2 f! D: r9 o# |
if(flag5s < 5 && clock) //闹钟5秒时间判断
/ o9 j( ^/ |: G, v7 x {, S. F: `5 Q2 b/ ~" e2 l1 f
P1_0 = ~P1_0;
9 H, j: I) [9 U- g6 ^/ b }6 p" @6 D9 n s; I8 l1 m
else( V" D6 d% H- U" |. p
{
4 H0 w" X0 s, F9 T- l clock = 0;
7 U+ Q) y" _# { P1_0 = 0;
4 P7 B" u: H) W6 j! y, C/ M- \ }& y* z% {" t! v: ]
if(++flag1s >= 5)
8 H9 e8 ~3 w Z* i A {
* Q/ ]8 ]; t5 R' ~3 H flag1s = 0;
$ q6 f9 x0 G& W( A flag = ~flag;
) x9 \% y+ B C t if(clock)
: o7 p7 Q% r& J/ | flag5s++;
% l$ `" d' u/ d; V3 o9 N else
# e- x7 u) \( q1 ?( Z. ^, Q flag5s = 0;% {+ s: G+ D- r: @- ?
}
) v0 I5 D5 L. s } 8 ~3 ~9 L, F* r# Z, O) V
}" y3 P) B- x7 Y# m! D+ U! t% `
//向DS1302写入时间% U. ]7 I* y u' M% p
void TimeWeite()2 B6 o/ s! C9 {4 [' m4 L6 _
{
9 N. m# D9 K- f8 s9 ^$ ?! g. k+ @ unsigned char ti[3]; % B p4 N. T) K6 m; `' {
//将两个分开的时间合成在一起
9 u( {5 T5 ?5 [) [& m+ c ti[0] = ((num[6]<<4) | num[7]);
8 a& F3 m2 G- S0 Z& |; G3 `1 D0 H0 n) d9 F ti[1] = ((num[3]<<4) | num[4]);
, D1 m# Z5 k& h ti[2] = ((num[0]<<4) | num[1]);+ P. s- D) s$ ^! M L% D$ g
) [' M1 e2 h& s/ p- E* S
Ds1302_Time(ti);
9 ~) s& |+ w t" @6 M+ L}3 @4 u: H6 } O0 ^- Q5 E8 V3 N5 z
6 ?3 [$ K" h r1 T* z% Z: U7 i% Kvoid key()7 Q. Z6 U2 v! a
{
% i+ N" \1 o3 j' ]+ { if((P3_0==0||P3_1==0||P3_2==0||P3_3==0)&&clock==1) //闹钟响应，进行关闭' i$ ~: p) M, A+ A/ `
{( O1 u5 o1 `7 C3 C3 o5 A
clock = 0;
8 A9 L4 E) Y8 o* V# i- |3 ] while(!P3_0);while(!P3_1);
# `# @3 F* C) Y( ?6 O while(!P3_2);while(!P3_3);: e! ?2 w/ ], g7 O$ E
}
- T) Y+ e% T7 t1 _* X$ g! o. @1 u; p& `' Q; l2 _" a
if(timesetup!=1 && clocksetup!=1 && P3_0==1) //按下显示温度值，松开显示时间
& }' {* J$ o% r {
# ^$ [; o* `. H2 t# J$ y Ds1302_Display();1 }6 E q" C7 Z' a( c; g
}else if(timesetup!=1 && clocksetup!=1 &&P3_0 == 0). v+ j/ T6 D1 F) i t6 H& h0 d
{
" j7 h+ p% h5 ~* G8 Q Ds18b20_Display();
, c) F! W- f) M. x0 A }+ e+ S9 |( h9 \6 Q7 Y. W/ U
if(clocksetup !=1 && P3_3 == 0) //进入时间设置4 J+ V# |3 @$ [9 Z) Q$ n; F
{* o8 h) g/ i" G A* V7 c
timesetup = 1;! r- c/ E3 I- c; b2 N# I' g* H" A
position++;: L* ]% z' R, {8 l0 \6 D2 B* e: L9 m
if(position == 4) //向DS1302重新写入时间
: T* W) h7 ^! T3 x4 t3 M {/ E- b% l* }0 u0 [4 l; W
TimeWeite();3 `7 ^% z* j1 O8 z8 ^6 d
}
+ [ |2 g+ `# |' i b" c9 R while(!P3_3);6 r, t1 e6 A6 @
}
# A: Q: M6 X0 ]# J) f" k+ ] if(timesetup !=1 && P3_2 == 0) //进入闹钟时间设置& [# p: |+ v- w3 Q" Z
{
+ y2 t* D8 L: Y: I9 [# \: m clocksetup = 1;+ N8 b' l P3 M7 w( d* f. R; l
position++;
7 g% b/ w( k2 H$ } @6 Q% `& b clock = 0;7 q- h- W, e+ b% F+ Z* b
while(!P3_2);# V- u! y; D4 T4 ~2 o' J5 ~
}
7 E0 E, f2 @, e8 M- c if((timesetup==1||clocksetup==1) && P3_0 == 0) //进入时间设置， 时间+1) k7 o6 K3 a$ i9 e
{ 3 p; h0 q1 j4 @" T4 j0 x
if(timesetup) //实时时钟设置* `9 Z8 @& Y6 S, K$ ^- Q
{
7 ?+ q2 S" S4 w- A% D. ` if(position == 1) //秒3 \$ _0 c& G* z9 y* a
{. o* ~# D) B: q$ ^
if(++num[7] >= 10)
5 u y. [( N( ]6 k {
" ~) O" W2 S+ T5 p num[7] = 0;
: M" I: S2 g; S$ V# ~ if(++num[6] >=6)* v9 G$ P% c; I
num[6] = 0;
9 P% O2 Q* [8 o ] j }' L9 @' w$ N O7 ]4 s* U: Q
}else
( `' o, R; e9 C if(position == 2) //分' E$ H6 D* F# O/ `# z; M$ q, n) A
{! P, @& y; z! w: R; C ^, L+ C
if(++num[4] >= 10)
# w0 M1 `/ Z& @* `% L, L: Z {
% p. ^( ]* U, N6 v/ |, | num[4] = 0;
4 ~. P! N+ _, A1 Q O6 t' l if(++num[3] >=6). w# g9 o5 P+ Y6 p/ C
num[3] = 0;
- X. T4 e. `' | }
4 P7 j( u/ E0 M8 w6 | }else' D" v. ?5 Z0 a" g6 z
if(position == 3) //时
o7 L- p$ ^( F2 T: \+ ^ {& ^, m7 [3 U6 ?. `4 l
if(num[0] == 2)
4 ?3 s7 c5 m1 d# Z% u& m+ \& L {
. y' s0 \# f* C. K if(++num[1] >= 5)
' T- }/ q5 n' o% h6 m {* Z: E8 r- F% Z) L6 B
num[1] = 0;* h0 V: ]( G& u1 q' \% \# V
num[0] = 0;! E0 H! ]+ m) G2 I# s M/ I
}
: _ o, t c8 W* _1 t }else
, |4 e# W( `4 O& C1 s! r if(++num[1] >= 10)
& k4 |/ K C* M {& w( G- C) z/ U: }, h( W2 _' T
num[1] = 0;
+ r7 o6 ?# ^8 m6 F$ Z. p if(++num[0] >=3)
% b3 G' H- R3 T; R5 l num[0] = 0;
" h0 f2 V' @( w+ O ^ }
; V, [+ L t+ w) O' e. y, T+ }9 ^, z/ @ }, H8 s, a* ]9 q% x6 v
}else if(clocksetup) //闹钟时间设置
/ e3 ^, g* U, s8 R, y' ? {
6 t, P. E8 u1 |, U. E9 p. d9 _" w4 a if(position == 1) //秒
- _/ I6 u B' E {6 {' l0 |+ q# p9 t Q6 ^( c
if(++timeclock[7] >= 10)
0 N$ {3 ^( t% o3 m# x {# B3 h; d n. F
timeclock[7] = 0;! L7 `/ X; O2 H5 Y: ?5 {) \
if(++timeclock[6] >=6)0 J4 S1 t4 e+ o/ A3 d% K
timeclock[6] = 0;$ _* m9 a% f2 ?0 Y
}
# a2 U& w6 z/ D }else* s. }! I* S5 K1 f3 h. H" N8 ~
if(position == 2) //分
$ s7 v) B1 A" z {* M, d, X! w! n0 h9 \3 }; @
if(++timeclock[4] >= 10): H0 U( c6 E" ]* a/ n
{
) I B4 v' v U3 W timeclock[4] = 0;
% b& v( D. Y1 l2 p) P if(++timeclock[3] >=6)7 m9 W$ ]+ n( j" H; @
timeclock[3] = 0;1 [, s4 Y4 V6 I g0 u. w" A: x
}9 Z* j" M Z7 d6 t7 J" `* e: s% C! a
}else( r0 [/ r6 l+ u6 A- i% L1 ?- w( V% m
if(position == 3) //时3 \0 U/ }; f/ a8 {0 H
{
+ Q/ E3 X/ x$ a% j7 K* |9 V1 B. @1 H if(timeclock[0] == 2)
: e9 Q( j/ n* n E {- u, ]6 b8 U' u
if(++timeclock[1] >= 4)1 m/ r) D4 S5 T* b
{
3 J! H- Q0 `+ ^+ H& f- c timeclock[1] = 0;
, c2 A( |9 h+ H8 B S timeclock[0] = 0;2 p+ M+ T/ p% R% Q! N: B" B
}
6 |# B" j, Y0 t2 f; D: | @$ Y }else
9 W8 a, _. w& u! m7 i9 @ if(++timeclock[1] >= 10) R; i! v% ~8 v ]6 T
{0 q& \3 A [8 L' m* }4 |* ~
timeclock[1] = 0;
3 o% q1 `6 I# y* g if(++timeclock[0] >=3)! p6 ?/ e; N( m; }: \5 m
timeclock[0] = 0;+ ^6 A- T% z5 E! ?! j9 M
}1 a8 b6 d1 v, a2 @- u6 y. q
} 4 o$ s) ^. v, {8 d
}" {; O, M! v1 h$ b
while(!P3_0);
: T3 {3 x% Y# t, l/ c }! o- a( ^/ J! m2 g; V" M/ l
if((timesetup==1||clocksetup==1) && P3_1 == 0) //进入时间设置， 时间-1
7 x% M: k* E* c& q3 L0 V, T; N {
* m9 h2 z# |# j8 s% ^) E if(timesetup) //实时时钟设置
1 S0 H# Y* i/ b j {; J/ }. }7 \( u2 q
if(position == 1) //秒& S) J4 a3 Q+ c. z/ C6 u3 p
{+ z: C% v; |% c1 Q
if(--num[7] < 0): {* u$ W1 S* T1 x. V! j. e5 \
{" Z) ^) v# t4 @
num[7] = 9;
: y/ o3 p) h2 m+ G+ D, s if(--num[6] < 0)4 l. s w" |2 @8 |: [' V% W
num[6] = 5;* U+ Q+ c- K9 b2 G' v. I t) P
}1 y9 Y/ v7 p4 J# P, F" ?& k2 _
}else
' L; R G/ h! ~7 C if(position == 2) //分
" l$ W# E4 K9 @& [/ Q) m; U {
, s5 p+ [; [) ]( Q: W8 K! W M if(--num[4] < 0)
+ u, ]5 K8 I5 x+ t8 u/ ` {& @" V5 h+ J# Q4 E0 Z J8 g& t
num[4] = 9;
) W+ U0 v6 Y4 P3 X3 ` if(--num[3] < 0)
, J$ Z9 @* Y {3 [3 k& H num[3] = 5;
/ x/ H! {# g& i6 H# a4 z2 P }, k1 u' N& q q( Y/ e& q5 c
}else8 G, E8 ~; h& S7 {: n
if(position == 3) //时
2 B! X" _ b; y0 e, L+ { {
! @, K- D2 j6 Y. o/ V* E9 O if(--num[1] < 0)& p/ c/ f) Z& H$ h/ i, \
{) v& l# G$ z$ I2 v- D
num[1] = 9;) _" J6 b% S4 ?
if(--num[0] < 0)
8 ]. B d5 d( p1 R. w0 W5 A {% t8 m2 x3 ^' o0 Q
num[0] = 2;4 {. y) G M: b& h, X) u- q
……………………
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发表于 2018-11-7 10:02
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