单片机的数字时钟程序

#include

#define unit unsigned int

#define uchar unsigned char

/*定义字型字位口*/

#define DIGPORT XBYTE [0x8000]

#define WORDPORT XBYTE [0x4000]

/*定义P1口各管脚*/

sbit K0=P1^0;

sbit K1=P1^1;

sbit K2=P1^2;

sbit BEEP=P1^3;

sbit L0=P1^4;

sbit L1=P1^5;

sbit L2=P1^6;

sbit L3=P1^7;

uchar data BUFFER[2]={0,0}; /*显示缓冲区(依次为低位,高位)*/

uchar data CLOCK[4]={0,0,0,0}; /*存放时钟时间(依次为百分秒,秒,分和时位)*/

uchar data SECOND[2]={0,0}; /*存放秒表时间(依次为百分秒,秒)*/

uchar data REVERSE[4]={0,0,0,0}; /*存放倒计时时间(依次为百分秒,秒,分和时位)*/

/*定义运行状态*/

uchar data STATE=0;

/*STATE=0,秒表*/

/*STATE=1,倒计时分调整*/

/*STATE=2,倒计时小时调整*/

/*STATE=3,倒计时运行*/

/*STATE=4 or 7,时钟运行*/

/*STATE=5,时钟分调整*/

/*STATE=6,时钟时调整*/

bit bdata SND=0; /*秒表START*/

bit bdata RST=0; /*秒表RESET*/

bit bdata STP=0; /*倒计时STOP*/

/*数码管显示编码"0"－"9","A","-"*/

uchar code TABLE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x40};

void display(void)

{

uchar i; /*显示缓冲区首址*/

uchar delay; /*显示延时*/

uchar disp; /*显示内容*/

uchar digit; /*定义数码管显示位*/

digit=0x08;

for (i=0;i<2;i++) /*秒表,显示百分秒和秒*/

{

if (BUFFER[i]>100) disp=BUFFER[i]%10+10;

else disp=BUFFER[i]%10;

DIGPORT=digit;

WORDPORT=TABLE[disp];

for (delay=0;delay<=200;delay++);

digit=digit>>1;

disp=BUFFER[i]/10;

DIGPORT=digit;

WORDPORT=TABLE[disp];

for (delay=0;delay<=200;delay++);

digit=digit>>1;

}

}

void timer0(void) interrupt 1 using 1

{

/*重置定时初值*/

TH0=-5000/256;

TL0=-5000%256;

/*时钟处理*/

CLOCK[0]=CLOCK[0]+1;

if ((CLOCK[0]==50) && (STATE>=4))

{

L0=!L0;

}

if (CLOCK[0]==100)

{

if (STATE>=4) L0=!L0;

CLOCK[0]=0;

CLOCK[1]=CLOCK[1]+1;

if (CLOCK[1]==60)

{

CLOCK[1]=0;

CLOCK[2]=CLOCK[2]+1;

if (CLOCK[2]==60)

{

CLOCK[2]=0;

CLOCK[3]=CLOCK[3]+1;

if (CLOCK[3]==24)

{

CLOCK[3]=0;

}

}

}

}

}

void timer2(void) interrupt 5 using 3

{

TF2=0;

TH2=-5000/256;

TL2=-5000%256;

/*秒表处理*/

if (STATE==0)

{

SECOND[0]=SECOND[0]+1;

if (SECOND[0]==50)

{

L1=!L1;

}

if (SECOND[0]==100)

{

L1=!L1;

SECOND[0]=0;

SECOND[1]=SECOND[1]+1;

if (SECOND[1]==100)

{

SECOND[1]=0;

}

}

}

/*倒计时处理*/

if (STATE==3)

{

REVERSE[0]=REVERSE[0]+1;

if (REVERSE[0]==50)

{

L2=!L2;

}

if (REVERSE[0]==100)

{

L2=!L2;

REVERSE[0]=0;

REVERSE[1]=REVERSE[1]+1;

if (REVERSE[1]==60)

{

REVERSE[1]=00;

REVERSE[2]=REVERSE[2]-1;

if ((REVERSE[2]==0) && (REVERSE[3]==0))

{

TR2=0;

STP=1;

BEEP=0;

}

else if (REVERSE[2]==0xff)

{

REVERSE[2]=59;

REVERSE[3]=REVERSE[3]-1;

}

}

}

}

}

void intsvr1(void) interrupt 2 using 2

{

if (STATE==5)

{

CLOCK[2]=CLOCK[2]+1;

if (CLOCK[2]==60) CLOCK[2]=0;

}

if (STATE==6)

{

CLOCK[3]=CLOCK[3]+1;

if (CLOCK[3]==24) CLOCK[3]=0;

}

}

void timer1(void) interrupt 3 using 3

{

if (STATE==0)

{

if (RST)

{

SECOND[0]=0;

SECOND[1]=0;

L1=1;

RST=0;

}

else

{

if (SND) TR2=1;

else

{

L1=1;

TR2=0;

RST=1;

}

SND=!SND;

}

}

else if (STATE==1)

{

REVERSE[2]=REVERSE[2]+1;

if (REVERSE[2]==60) REVERSE[2]=0;

}

else if (STATE==2)

{

REVERSE[3]=REVERSE[3]+1;

if (REVERSE[3]==24) REVERSE[3]=0;

}

else

{

if (STP)

{

BEEP=1;

L2=1;

STP=0;

}

else TR2=0;

}

}

void main(void)

{

uchar stabak; /*上一次程序运行的状态*/

P1=0x0f;

EA=1; IT1=1; ET0=1;

TMOD=0x61; /*T1方式2计数，T0方式1计时*/

TH0=-5000/256; TL0=-5000%256;

TH1=0xff; TL1=0xff;

T2CON=0; TH2=-5000/256; TL2=-5000%256;

K0=1; K1=1; K2=1;

STATE=P1&0x07;

stabak=STATE;

for (;;)

{

switch (STATE)

{

case 0: /*STATE=0,秒表*/

{

EX1=0; ET1=1; ET2=1; TR1=1; SND=1;

L1=1; L0=0; L2=0;

SECOND[0]=0;

SECOND[1]=0;

} break;

case 1: /*STATE=1,倒计时分调整*/

{

EX1=0; ET1=1; ET2=1; TR1=1; TR2=0;

L2=1; L0=0; L1=0;

REVERSE[0]=0;

REVERSE[1]=0;

} break;

case 2: /*STATE=2,倒计时小时调整*/

{

EX1=0; ET1=1; ET2=1; TR1=1; TR2=0;

L2=1; L0=0; L1=0;

REVERSE[0]=0;

REVERSE[1]=0;

} break;

case 3: /*STA