单片机控制数码管显示99.99数字秒表,带记忆,倒计时,置数功能

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar code dis_r[11]={~0xc0,~0xf9,~0xa4,~0xb0,

~0x99,~0x92,~0x82,~0xf8,~0x80,~0x90, ~0xff}; uchar code dis_b[4]={0x20,0x10,0x08,0x04};

uint dis_s[35];

uchar dis_buf[4];

uchar code dis_l[9]={0xf6,0xf5,0xf4,0xf3,0xf2,0xf1,0xf0};

uchar dis_t;

uchar a,b,c;

uchar key1_times,key4_times;

uint doc,n;

void update_disbuf();

void proc_key();

void daojshi();

void store();

void read_store();

void delay(uint ms);

sbit K1 = P1^7;

sbit K2 = P1^6;

sbit K3 = P1^5;

sbit K4 = P1^4;

sbit M=P1^3;

sfr P2M0=0x95;

sfr P2M1=0x96;

sfr P3M0=0xB1;

sfr P3M1=0xB2;

void main(void)

{

P2M0=0x00;

P2M1=0xff;

P3M0=0x00;

P3M1=0xff;

M=0;

P2 = 0x3F;

P3 = 0xFF;

TMOD = 0x11;

TH1 = (65536-50000)/256;

TL1 = (65536-50000)%256;

TH0 = (65536-1000)/256;

TL0 = (65536-1000)%256;

update_disbuf();

dis_t = 0;

key1_times = 0;

IE = 0x8a;

TR0 = 1;

TR1 = 0;

while(1)

{

if(K1!=1)

{

delay(10);

if(K1!=1)

{

while(K1!=1);

proc_key();

}

}

if(K3!=1)

{

delay(10);

if(K3!=1)

{

while(K3!=1);

read_store();

}

}

if(K4!=1)

{

delay(10);

if(K4!=1)

{

while(K4!=1);

key4_times++;

switch(key4_times)

{

case 1: TR1=0;doc=0;a=0;b=0;c=0;update_disbuf(); break;

case 2: doc=9999;daojshi(); key4_times=0;break;

}

}

}

}

}

void daojshi()

{

while(doc!=0)

{

update_disbuf();

doc--;

delay(50);

if(K3!=1)

{

delay(10);

if(K3!=1)

{

while(K3!=1);

TR0=0;

P2=0x00;

P3=0xff;

delay(100);

TR0=1;

store();

}

}

if(K4!=1)

{

delay(10);

if(K4!=1)

{ while(K4!=1);break;} }

}

}

void store()

{

b=0;c=0;

dis_s[a]=doc;

a++;

}

void read_store()

{

TR0=0;

dis_t=0;

while(dis_s[b]!='\0')

{

doc=dis_s[b];

update_disbuf();

b++;

P1=dis_l[c];

c++;

if(c==7){c=0;}

break;

}

TR0=1;

}

void proc_key()

{

if(K1==1)

{

key1_times++;

switch(key1_times)

{

case 1:TR1=1;break;

case 2:TR1=0;key1_times=0;break;

}

}

}

void timer0() interrupt 1

{

TH0 = (65536-1000)/256;

TL0 = (65536-1000)%256;

P2 = dis_buf[dis_t];

P3 = dis_b[dis_t];

dis_t++;

dis_t &= 0x03;

}

void timer1() interrupt 3

{

TH1 = (65536-50000)/256;

TL1 = (65536-50000)%256;

n++;

if(n==2)

{

doc++; n=0;

}

if(K2!=1)

{

delay(10);

if(K2!=1)

{

while(K2!=1);

store();

}

}

update_disbuf();

}

void update_disbuf()

{

dis_buf[0] = dis_r[doc%1000%100%10];

dis_buf[1] = dis_r[doc%1000%100/10]| 0x80; dis_buf[2] = dis_r[doc%1000/100];

dis_buf[3] = dis_r[doc/1000];

}

void delay(uint ms)

{

uint i;

for(;ms>0;ms--)

for(i=0;i<115;i++){;}

}