时钟。txt.txt

单片机C语言15个实验附有原理图和程序 是我的课程作业 以经过实践验证

程序14
//clock_alarm1.c
#include <stdio.h>
#include <reg51.h>
#include <intrins.h>
unsigned char code ledk[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char key,key_0,key_flag,key_count;
unsigned char mask=0xee,t0_count,set_no=0,led_no=0;
unsigned char set_flag=0,al_set_flag=0,disp[4];
unsigned char hour,min,sec,al_hour,al_min;
sbit P37=P3^7;sbit clk=P0^7;sbit sda=P0^6;sbit P30=P3^0;
#define hi 0x3c
#define lo 0xb0
#define hi1 0xff
#define lo1 0x00
void delay(unsigned int n)
 {unsigned int i,j;
  for(i=0;i<n;i++)
     for(j=0;j<n;j++)
       ;}
void shift(dd)
{static unsigned char d;
   unsigned char j=0;
    d=dd;
   	while(j<8)
	{if((d&0x80)!=0) sda=1;
       else  sda=0;
	   clk=0;clk=1;
	   d<<=1;j++;}  }
void clktodisp(unsigned char j,xx)
 {disp[j]=xx/10; j--; xx=xx%10; disp[j]=xx;}
void out()
 {unsigned char dd;
  if(al_set_flag==0){dd=ledk[disp[led_no]];shift(dd);}
     else {dd=ledk[disp[led_no]]|0x80;shift(dd);}
  if(t0_count<=10 && led_no==2 ){dd=ledk[disp[2]]|0x80;shift(dd);}
  if(t0_count%4==0 && led_no==set_no && set_flag==1)shift(0);
  if(t0_count%4==0 && led_no==set_no && al_set_flag==1)shift(0);
   P2=mask;}
void t0() interrupt 1 
 {TH0=hi;TL0=lo;t0_count++;key_count++;
   if(t0_count==20){sec++;t0_count=0;}
   if(sec>=60){sec=0;min++;} 
   if(min>=60){sec=0;min=0;hour++;}
   if(hour>=24){hour=0;min=0;sec=0;}  }
void t1() interrupt 3
  {P30=!P30;TH1=hi1;TL1=lo1;}
unsigned char get_char()
{unsigned char key_code;
 static unsigned char column=0;
   if(P37==0 && key_flag==1){key_code=column;key_flag=0;key_count=0;}
       else key_code=0xff;
   column++;led_no++;if(column>3)column=0;if(led_no>3)led_no=0;
   mask=_crol_(mask,1);
   return key_code;}
void disptoclk(void)
  {hour=disp[3]*10+disp[2];
   min=disp[1]*10+disp[0]; }
void disptoal_clk(void)
  {al_hour=disp[3]*10+disp[2];
   al_min=disp[1]*10+disp[0]; }
void key_func(key)
 {switch (key)
   {case 0:  set_no=0;key_0++;if(key_0>9)key_0=9; 
             if(key_0<9){set_flag=1;al_set_flag=0;}
                else{set_flag=0;al_set_flag=1;clktodisp(3,al_hour);clktodisp(1,al_min);}
             break;
    case 1:  set_no++;if(set_no>3)set_no=0;break;
    case 2:  disp[set_no]++;
             if(set_no==0 && disp[set_no]>9)disp[set_no]=0;
             if(set_no==1 && disp[set_no]>5)disp[set_no]=0;
             if(set_no==2 && disp[set_no]>9)disp[set_no]=0;
             if(set_no==3 && disp[set_no]>2)disp[set_no]=0;
             break;
    case 3:  key_0=0;
             if(set_flag==1){set_flag=0;disptoclk();}
             if(al_set_flag==1){al_set_flag=0;set_flag=0;disptoal_clk();}
		     break;
    default: break;               }  }
void main(void)
 {TMOD=0x11;TH0=hi;TL0=lo;TH1=hi1;TL0=lo1;
    EA=1;ET0=1;ET1=1;TR0=1;al_min=min+1;al_hour=hour+1; P30=1; 
    while(1)
     {key=get_char( );key_func(key);out();delay(20);
     if(al_set_flag==0 && set_flag==0){clktodisp(3,hour);clktodisp(1,min);}
  	 if(key_flag==0 && key_count>=10 && P37==1)key_flag=1;
     if(hour==al_hour && min==al_min){if(t0_count<10)TR1=1;
                                                  else {TR1=0;P30=1;}} 
  }		   
 }