单片机电子时钟程序.txt

单片机电子时钟程序 它能显示日期 星期几 时间

#include<REG51.H>   
#define uint unsigned int  
#define uchar unsigned char 
//***********************************
unsigned char code SEG7[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
uchar code WEEK_SEG7[8]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8};
uchar ACT[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; 
uchar deda,sec,min,hour,week=1;
uchar cnt;      
/*****************************************************/
void init(void)     
{      
TMOD=0x11;    
TH0=-(50000/256);   
TL0=-(50000%256);  
ET0=1;     
TR0=1;     
TH1=-(1000/256);   
TL1=-(1000%256);   
ET1=1;     
TR1=1;     
EA=1;     
}      
/******************************************/
void time0(void) interrupt 1   
{      
TH0=-(50000/256);   
TL0=-(50000%256);  
deda++;     
}      
/*******************************************/
void time1(void) interrupt 3 
{      
TH1=-(1000/256);   
TL1=-(1000%256);   
if(++cnt>7)cnt=0;   
switch (cnt)    
{      
case 0:P1=SEG7[sec%10];P2=ACT[cnt];break;
case 1:P1=SEG7[sec/10];P2=ACT[cnt];break;
case 2:P1=SEG7[min%10];P2=ACT[cnt];break;
case 3:P1=SEG7[min/10];P2=ACT[cnt];break;
case 4:P1=SEG7[hour%10];P2=ACT[cnt];break;
case 5:P1=SEG7[hour/10];P2=ACT[cnt];break;
case 6:P1=0x00;P2=0xff;break; 
case 7:P1=WEEK_SEG7[week];P2=ACT[cnt];break;
default:break;    
}      
}      
/***************************************/
void conv(void)   
{      
if(deda>=20){deda=0;sec++;}
if(sec>=60){sec=0;min++;}  
if(min>=60){min=0;hour++;} 
if(hour>=24){hour=0;week++;} 
if(week>7){week=1;}   
}      
/*****************************************/
void delay(uint k)   
{     
uint data i,j;   
for(i=0;i<k;i++){  
for(j=0;j<121;j++)  
{;}}     
}     
/**********************************************/
uchar scan_key(void) 
{     
uchar temp;
P3=0xff;   
temp=P3;    
if(temp!=0xff)  
   {delay(20);  
    temp=P3;   
if(temp!=0xff)return temp;
    }     
return 0;
}
/********************************************/
void main(void)   
{uchar key_flag;  
init();    
while(1)   
{     
conv(); 
key_flag=scan_key();   
switch(key_flag)  
    {     
    case 0xfb:if(++min>59)min=0;delay(300);break;
    case 0xf7:if(++hour>23)hour=0;delay(300);break;
    case 0xef:if(++week>7)week=1;delay(300);break;
    default:break; 
    }     
}     
}