原创 51学习8~~键盘 数码管 定时 中断 的综合

#include <REG51.H>   ­

#define uchar unsigned char ­

#define uint unsigned int ­

uchar code SEG7[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; ­

uchar code WEEK_SEG7[8]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8}; ­

uchar ACT[8]={0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff}; ­

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:P0=SEG7[sec%10];P1=ACT[cnt];break;   1ms  显示一位 ­

case 1:P0=SEG7[sec/10];P1=ACT[cnt];break; ­

case 2:P0=SEG7[min%10];P1=ACT[cnt];break; ­

case 3:P0=SEG7[min/10];P1=ACT[cnt];break; ­

case 4:P0=SEG7[hour%10];P1=ACT[cnt];break; ­

case 5:P0=SEG7[hour/10];P1=ACT[cnt];break; ­

case 6:P0=0xff;P1=0xfe;break; ­

case 7:P0=WEEK_SEG7[week];P1=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; ­

P2=0xfe;   ­

temp=P2;     ­

if(temp!=0xfe)   ­

   {delay(20);   ­

    temp=P2;   ­

   if(temp!=0xfe)return temp; ­

    }     ­

return 0; ­

} ­

­

void main(void)   ­

{   uchar key_flag;   ­

init();     ­

while(1)   ­

{     ­

conv(); ­

key_flag=scan_key();   ­

switch(key_flag)   ­

    {     ­

    case 0xee:if(++min>59)min=0;delay(300);break;      0-59­

    case 0xde:if(++hour>23)hour=0;delay(300);break;     0-23­

    case 0xbe:if(++week>7)week=1;delay(300);break;        1-7­

    default:break; ­

    }     ­

}     ­

}­