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单片机 电子钟
#include"STC15F2K.h"
#include
typedef unsigned char uchar;
typedef unsigned int uint;
***it ds=P4^4;
***it sck=P4^2;
***it rck=P4^1;
***it k1=P3^0;
***it k2=P3^1;
***it k3=P3^2;
***it k4=P3^3;
uchar bdata set;
***it high7=set^7;
uchar counter=0;
uchar code tab[40]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f, //0~F共阴极，无小数点
//h,p,u,全灭，无小数点
0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef,0xf7,0xfc,0xb9,0xde,0xf9,0xf1, //0~F共阴极，有小数点
0xf6,0xf3,0xbe,0x80}; //h,p,u,全灭，有小数点
void oneled_out(uchar n,uchar location)
{ uchar i;
set=location;
for(i=1;i<9;i++)
{ds=high7;
sck=0;sck=1;sck=0;
set=set<<1;
}
set=~tab[n];
for(i=1;i<9;i++)
{ds=high7;
sck=0;sck=1;sck=0;
set=set<<1;
}
rck=0;rck=1;rck=0;
}
void timer0_initialize()
{
counter=0;
TR0=0;
TMOD=0x01; //定时器0
TH0=(65535-5000)/256; //5ms
TL0=(65535-5000)%256;
EA=1;
ET0=1;
TR0=1;
}
void timer0()interrupt 1 //中断服务子程序
{
TH0=(65535-5000)/256; //5ms
TL0=(65535-5000)%256;
counter++;
}
void main()
{ uchar n1,n2,n3,location,i=0;
uint num1=0,num2=0,num3=0;
location=0x80;
timer0_initialize();
while(1)
{if(counter==200)
{counter=0;num1++;
if(num1==60)
{num1=0;
num2++;}
if(num2==60)
{num2=0;
num3++;}
if(num3==24)
num3=0;
}
if(k1==0){while(!k1);num2++;}
if(k2==0){while(!k2);num2--;}
if(k3==0){while(!k3);num3++;}
if(k4==0){while(!k4);num3--;}
if(i==0)
{n1=num1%10;oneled_out(n1,location);}
else if(i==1)
{n1=num1/10;oneled_out(n1,location);}
else if(i==2)
{n2=num2%10;oneled_out(n2+10,location);}
else if(i==3)
{n2=num2/10;oneled_out(n2,location);}
else if(i==4)
{n3=num3%10;oneled_out(n3+10,location);}
else if(i==5)
{n3=num3/10;oneled_out(n3,location);}
location=location>>1;
i++;
if(i==6){i=0;location=0x80;}
}
}
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