#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit key1=P3^0;
sbit key2=P3^1;
sbit key3=P3^2;
sbit key4=P3^3;
sbit wei1=P2^4;
sbit wei2=P2^5;
sbit wei3=P2^6;
sbit wei4=P2^7;
sbit dp=P0^7;
bit flag_start,flag_mode,flag_5sec;
uchar time_data1[11],time_data2[11];
uchar temp,temp1,aa,aa1,shi,ge,fen,hao,num,i,j;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f}; //共陰數(shù)碼管編碼
void display_process(); //聲明處理函數(shù)
void key(); //聲明鍵掃描函數(shù)
void display(uchar shi,uchar ge,uchar fen,uchar hao); //聲明顯示子函數(shù)
void delay(uint z); //聲明延時子函數(shù)
void init(); //聲明初始化函數(shù)
void main() //主函數(shù)
{
init(); //調(diào)用初始化子程序
while(1)
{
key();
display_process();
display(shi,ge,fen,hao);
}
}
void display(uchar shi,uchar ge,uchar fen,uchar hao) //顯示子程序
{
P0=table[shi];
wei1=0;
delay(1);
wei1=1;
P0=table[ge];
dp=1;
wei2=0;
delay(1);
wei2=1;
P0=table[fen];
wei3=0;
delay(1);
wei3=1;
P0=table[hao];
wei4=0;
delay(1);
wei4=1;
}
void init() //初始化子函數(shù)
{
temp=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
}
void timer0() interrupt 1 //中斷服務(wù)
{
TH0=(65536-10000)/256; //重新賦初值
TL0=(65536-10000)%256;
aa++; //中斷一次變量aa加1
if(aa==100) //中斷100次后，定時時間為100*10ms=1s
{ //將temp的值加1
aa=0;
temp++;
if(temp==100) //秒表到達(dá)100s后回零
temp=0;
}
}
void delay(uint z) //延時子函數(shù)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void key() //按鍵定義
{
if(key1==0)
{
delay(5);
if(key1==0)
{
while(!key1);
flag_start=~flag_start;
if(flag_start==1)
TR0=1;
else
TR0=0;
}
}
if(key2==0)
{
delay(5);
if(key2==0)
{
while(!key2);
if(flag_mode==0||i!=0)
{
shi=0; //關(guān)閉定時器
ge=0;
fen=0;
hao=0;
aa=0;
temp=0;
TR0=0;
i=0;
num=0;
for(j=0;j<=10;j++)
{
time_data1[j]=0;
time_data2[j]=0;
}
}
else
{
num++;
if(num==11)
num=1;
aa1=aa;
temp1=temp;
time_data1[num]=aa1;
time_data2[num]=temp1;
flag_5sec=0;
}
}
}
if(key3==0)
{
delay(5);
if(key3==0)
{
while(!key3);
flag_mode=!flag_mode;
shi=0; //關(guān)閉定時器
ge=0;
fen=0;
hao=0;
aa=0;
temp=0;
TR0=0;
i=0;
num=0;
}
}
if(key4==0)
{
delay(5);
if(key4==0)
{
while(!key4);
i++;
TR0=0;
if(i==11)
i=1;
}
}
}
void display_process()
{
shi=temp%100/10; //正常走時
ge=temp%10;
fen=aa%100/10;
hao=aa%10;
if(flag_mode==1&&num!=0&&flag_5sec==0)
{
fen=time_data1[num]/10;
hao=time_data1[num]%10;
shi=time_data2[num]/10;
ge=time_data2[num]%10;
if(temp-time_data2[num]==5)
flag_5sec=~flag_5sec;
}
if(i!=0)
{
shi=time_data2[i]/10;
ge=time_data2[i]%10;
fen=time_data1[i]/10;
hao=time_data1[i]%10;
}
}
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