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制作出来的实物图如下:- Z6 ?% B7 @7 x, t$ o) b
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altium Designer画的PCB图如下:+ }: F. w( P: e( x& S o4 u3 ?
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单片机源程序如下:& d0 ^; Q3 a& F$ v: x+ g; T
include "reg51.h"; d% a, z; D& D, p4 s: J' x0 y; E- m
#include "intrins.h"
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sfr P5 = 0xC8;
; {7 W; p8 D0 d, y9 b! e! D% Ksfr P1M0 = 0X92;
, v4 _6 G6 ]2 Ysfr P1M1 = 0x91;
7 c- c% y3 x+ {2 n j+ U- C, ksfr P3M0 = 0XB2;
! F% t2 O8 _- l+ Ssfr P3M1 = 0xB1;7 g9 g. J; M! h% g b7 E5 L/ q1 S
sfr P5M0 = 0XCA;
, |- e) }3 e- p9 Bsfr P5M1 = 0xC9;
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sbit S_RCLK = P1^7;//位移动信号
1 X6 Q8 p7 n* k7 ?0 x8 asbit L_RCLK = P1^6;//平行输出信号
7 ] U9 x4 J3 Z% ?% [1 S+ I, wsbit S_BIT = P1^5;//位输入( S9 s; G i; H8 [
. r; b& A% A+ k2 D) V+ k//bit ; //标志位,虚拟的按键7 f% d+ T) _* \" M
unsigned char ct;
" O5 R; |2 P G: ]5 c! `1 @2 N//unsigned int //255 65536
8 `0 t3 A* ]) f( ]unsigned char code SEG_tab[]={0x3f,0x06,0x5b,0x4f,9 i) F1 ~# e1 h9 ]3 y" y) ?. b f1 E
0x66,0x6d,0x7d,0x07," _" y/ m5 ]6 F1 N( E% V3 ^
0x7f,0x6f,0x77,0x7c,8 E' }% u! ?$ c: }8 o
0x39,0x5e,0x79,0x71,0x40,0x80};* O" s5 v) S! f% S* i4 M
2 h! Z" C& |) jvoid Send_595(unsigned char x);, `, ]7 m' v I7 Z3 g" u' N0 }! o
void Delay1ms();
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# Y4 L- A% M4 Q& _main(void)* ]0 Q- c! m$ s1 S, Y
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P1M0 = 0X00;
' F6 [4 t J* K& S/ D* N P1M1 = 0X00; //0000 0000
, L9 s) Y) S6 f P3M0 = 0X00; //0000 1000
1 i$ K m# b5 A1 [* x% o+ o( m P3M1 = 0X00;( j% @0 E, i: r* v% L$ \
P5M0 = 0X00;; ^3 |% T% t. f) s# v$ @, _
P5M1 = 0X00;# S: g# c: C8 W8 H) `: C& C' R
L_RCLK = 0;7 \" N, l( K5 R# c0 W) F
S_RCLK = 0;
8 w$ c* ~+ N! @ m3 D; q* q S_BIT = 0;//位输入; I4 J: v0 \7 f
while(1)
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2 G5 H0 D* _ _. |; o+ e& i' ? static unsigned char ct=0;
/ D/ [3 Q6 ~0 o+ |, H& f unsigned int j=0;
1 V- f" l5 {/ e; n% |. [" k j=~(0x01<<ct);9 D# [/ h1 Z# _! i8 h4 @2 t
Send_595(j>>8);//片选相数码管 位码高8位 t$ b8 [+ d3 a% Q
Send_595(j);//片选相数码管 位码低8位 , Z9 q; L5 r0 ]- G3 s1 J/ o
Send_595(SEG_tab[ct]);//数码管数据& y2 p5 o6 U( e; F
L_RCLK = 1;7 ^) Y! e/ I0 ]- r4 H
L_RCLK = 0;
" e+ d, `2 i8 u8 Z; ~4 V/ R, j Delay1ms();
/ ^# j2 K& I8 v1 ?3 j; c if(ct<16)
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ct++;
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else ct=0;* \. `* `! f* S. |
}
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+ [; }. @; y6 @" X7 G$ j3 {void Send_595(unsigned char x)
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unsigned char i;4 k$ R( v0 ^# v8 F- W* J. }
for(i=0;i<8;i++)
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if(x&0x80) S_BIT = 1;
' y$ ^7 h! g, q/ T- }% h else S_BIT = 0;
6 {& |3 x% S/ {& u$ W) Q1 \: `$ z S_RCLK = 1;
, U) I0 b w1 T# t) { S_RCLK = 0;
" e7 V' @3 N* W x = x<<1;
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& h$ l7 s2 v- N; ?void Delay1ms() //@11.0592MHz
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( d" U7 U" P( i' W7 U unsigned char i, j;9 U, f4 `/ U0 Q
! P1 p# X4 |/ K( a) F i = 15;
* M5 \4 b' h; v/ f j = 90;
+ a/ y0 h9 |- A+ O& y do
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& n7 j8 r1 c( N+ L5 ` `$ @ while (--j);* @6 T/ p8 P6 {' {2 M0 m
} while (--i);4 R5 d+ M T, r
}
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