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基于51单片机的74HC164驱动六位数码管动态显示程序
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7 I+ d8 A& b" c' m3 i* b#include<reg52.h>
5 y+ N$ q* E; Z, q#include<intrins.h>! [0 |* D/ r+ H/ `" ?: V
5 G* I7 i. B. O g#define uchar unsigned char1 E: [; q0 |0 w7 [
#define uint unsigned int' B1 e' o3 l2 k0 W9 k( R. }! E
//74HC164
+ Y& ^& m% |; X4 A* R- p g5 v* Wsbit CLK=P1^0; // μíμçÆ½μ½¸ßμçÆ½±ßÑØ′¥·¢3 `, [. t' _) [' T
sbit MOSI=P1^1; // êy¾Yêäèë% P$ Y6 i2 Z- n4 L8 \2 b1 q
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unsigned char code Tab[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,8 @5 b$ {6 H1 n% @8 i. K
0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71}; //12òõêyÂë1ü( N" N% L5 E, t& u2 j
unsigned char DS_data[6];' p0 H. _3 k/ u# \% b1 x7 J
/*****************************************************# ]* r1 Y3 A+ I0 p& r( g
oˉêy1|Äü:êyÂë1üé¨ÃèÑóê±×óoˉêy9 N0 J, F2 |. ]) r0 L
oˉêy1|Äü:Ñóê±1ms3 x. P2 E( P m. `; I4 y# v
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***************************************************/3 {) J M( X4 V& e) l
void delay1ms()+ Z# B, X0 e( i1 P8 e
{
8 R# j; j3 N% k( z( \ unsigned char i,j; 8 W7 }' h D7 b q2 S5 T/ r5 l/ H
for(i=0;i<10;i++)+ Y+ K/ l+ i5 _' b5 N8 c# T
for(j=0;j<33;j++)
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}
6 T0 b v" o: Y) c. Fvoid separatEDAta(unsigned long dat) // datÎa6λêy
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DS_data[0]=dat%10;, [8 p' Y# R5 i
DS_data[1]=dat/10%10;7 T1 I1 j0 U& b/ p1 m
DS_data[2]=dat/100%10;8 c0 F. r- f- M$ ~8 d4 c" ?- p
DS_data[3]=dat/1000%10;
; Y* R! T" j* F5 ]3 [ DS_data[4]=dat/10000%10;
7 z: H; ?! X8 V% Y8 E6 y DS_data[5]=dat/100000%10;
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/ K. r! c+ j7 n( f; ?4 ?. evoid write_164(unsigned char dat)' f$ D! `" R9 w. C+ j$ z0 y
{
' C+ _/ h$ _- _; ]0 f$ w" M unsigned char i;
) P3 m ^: a, f1 e for(i=0;i<8;i++)/ s. ?$ y; _& V8 @2 o4 L$ L
{
# }& Y' |3 @, M; H- F; E CLK=0;
) j8 O7 W* U0 ?) r' j; P, E+ O if(dat&0x80) MOSI=1;6 V! G4 H/ l5 } m L# G! ?# ?" N
else MOSI=0;
' }5 q8 _4 X6 E3 x! W' m. f CLK=1;
0 e) b: Q3 e- s* O dat<<=1; , ~8 n# {$ L5 T( s# b# n
}
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& [& g, g! y, ~void display()3 [- Q1 h9 l2 B& v7 N- l& p8 q
{
8 p4 @, G* y2 M2 j unsigned char i;5 k v5 }! M9 V/ z# u! G4 L( v
for(i=0;i<6;i++); G3 n& ]0 `1 F# C
{
6 W) Y$ r. U; d+ X: ?4 V write_164(Tab[DS_data]);6 p! W" W! J+ ~! L9 l
P2=0x3f&(~(0x01<<i)); //êyÂë1üλ 12òõμíμçÆ½Ñ¡ÖDseg1¶Ôó|P2.5 seg6¶Ôó|P2.0
3 n: v1 B5 ^! y5 Z delay1ms();
: v$ R9 T( A5 \/ X5 c* F& p P2=0xff; //êyÂë1üÃe5 P' m4 x9 y- @& i! A' C# }' r
}
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7 J3 l# l0 T0 f# Zmain()- }) z+ X0 Q, r8 K9 _. q4 a a
{
' o }7 U2 W6 A- l! m5 S separateData(654321);
$ D, r9 `8 @. y# d: F while(1) % I {1 Y% y X- |
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display(); h1 J, L; b; d( G' w
}
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8 X& d+ @1 c B: V8 ?8 l, d, V![]()
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/ C! e: r) g4 S! ~: z% m#include<reg52.h>
. C$ [0 P: }5 D) l#include<intrins.h>
7 C! E( h1 l, g8 f0 x+ M4 H9 ^8 a9 ~. j5 f* h) v, r3 E | l
#define uchar unsigned char
$ J0 s, \7 {3 r2 Y9 }$ I+ h8 E#define uint unsigned int6 i' D7 J! j3 s2 f7 t! |1 M
//74HC164. g3 r* W" h- b$ b
sbit CLK=P1^0; // 低电平到高电平边沿触发
& \3 Z: C. Z8 V xsbit MOSI=P1^1; // 数据输入
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unsigned char code Tab[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,
) x$ O/ m5 I6 W5 q 0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71}; //共阴数码管1 G2 i/ b* x l- ]
unsigned char DS_data[6];: f) ~4 h, `0 O j
/*****************************************************
2 Z8 p: ] H3 Z函数功能:数码管扫描延时子函数1 J" L8 N5 t9 n8 l1 m
函数功能:延时1ms# h5 J, j& ^0 P ^ u# f
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***************************************************/
* `* y0 ]; F9 E( N( m8 l( ]void delay1ms()
& }2 F- x# l& D* `6 C K5 F, r( l{
& K7 C9 {9 d) m9 j+ _# _ unsigned char i,j; $ B* [1 A) n3 z3 U
for(i=0;i<10;i++)
% |7 _9 I, Z1 \/ p# b; T' ] for(j=0;j<33;j++)
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void separateData(unsigned long dat) // dat为6位数3 ^! u- ]4 r' z) P
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DS_data[0]=dat%10;! `& L. \9 o( Q2 @1 N2 G6 w; U0 `5 x
DS_data[1]=dat/10%10;# J& y9 R3 Z+ L/ @
DS_data[2]=dat/100%10;' `8 T Y3 u+ G) A, s
DS_data[3]=dat/1000%10;4 l( x4 N+ f; g) r6 A
DS_data[4]=dat/10000%10;" u2 j& l( P% R3 r7 v/ ] g- K
DS_data[5]=dat/100000%10;$ a) Y( i' C) Z/ c) }: c$ G" w
}
, d; y$ P) P1 X4 Q' yvoid write_164(unsigned char dat)
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unsigned char i;& P- T- h" J' m2 `3 y$ Z. f
for(i=0;i<8;i++)
' U! G) A3 N5 ~; O* d6 P {
" Z$ Q! m: Q5 ~6 ? CLK=0; % P1 `# V# @3 d! N( @/ z+ p3 `
if(dat&0x80) MOSI=1;
+ W7 ~# x7 \6 x* Q" w else MOSI=0;5 \( n5 y2 R, H- u1 r6 V, w& q
CLK=1; 9 K; Q1 i) O8 ?
dat<<=1;
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}
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( A' p9 x Y$ J' D3 `void display()7 R7 s! Y! O% e5 w1 J9 j d
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unsigned char i;7 p; z% x" d( A4 A3 t
for(i=0;i<6;i++)
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write_164(Tab[DS_data]);
5 d. t7 w* O3 j5 S P2=0x3f&(~(0x01<<i)); //数码管位 共阴低电平选中seg1对应P2.5 seg6对应P2.00 Y- _& N h; ]8 O' D1 j0 ]) A
delay1ms(); . ]4 X3 c0 x6 U3 p" }& C4 {
P2=0xff; //数码管灭
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. H5 ^/ P, o" o0 `! s+ smain()
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# r9 a: Z9 H; A b separateData(654321);
6 k- s p* Y5 _4 B: N/ A5 T while(1)
$ U3 x6 p& \- s) ~ {
. [) _- |( E2 k display();8 ]2 }) N2 A) @/ L
}
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