ex10.c

基于51的lcd1602数字时钟 可调解时间 自动调节星期

/*用定时器0，1602液晶，设计一个数字时钟，可以由三个按钮控制调节时间*/
#include<reg52.h>
#include"lcd1602.h"
#include"18b20.h"
#define TIMER0_COUNT 0xEE00
sbit mode=P3^0;
sbit plus=P3^1;
sbit dec=P3^2;
sbit rd=P3^7;
sbit fm=P2^3;
uchar count,s1num,timer0_tick,count=0;
typedef struct{
                    char hour;
                    char minute;
                    char second;
              }time;

typedef struct{
                    uint year;
                    uchar month;
                    char day;
              }date;
time now={0,0,0};
date today={2008,1,29};
char code dayofmonth[]={31,28,31,30,31,30,31,31,30,31,30,31};
char code weekday[7][4]={"MON","TUE","WED","THU","FRI","SAT","SUN"};

uchar monthday(uchar year,uchar month)
{
   if(month==2 && year%4==0)            //润年的2月有29天
        return(29);
   else
        return(dayofmonth[month-1]);    //非闰年时的该月份天数
}

void display_week()  //由年月日计算星期
{
     char days;
     days=(today.day+1+2*today.month+3*(today.month+1)/5+today.year+today.year/4-today.year/100+today.year/400)%7;
     display_string(&weekday[days][0]);   
}

 static void timer0_initialize(void)   //timer0 initialize
 {
     EA=0;              //设置不接受所有中断
     timer0_tick=0;
     TR0=0;                //关闭Timer0
     TMOD=0X01;         //设置Timer0为模式2，16位工作模式
     TL0=(TIMER0_COUNT & 0X00FF);    //设置Timer0低八位数值
     TH0=(TIMER0_COUNT >> 8);     //设置Timer0高八位数值
     PT1=1;              //设置Timer0的优先级为最高
     ET0=1;           //设置接受Timer0的中断
     TR0=1;             //启动Timer0
     EA=1;            //设置系统接受中断
 }

void write_time(uchar add,uchar number)
{
     gotoxy(2,add);
	display_data(number);
}
void write_riqi(uchar add,uchar number)
{
     gotoxy(1,add);
	display_data(number);
}

void keyscan()
{
	uchar mode_num;
     rd=0;
	if(mode==0)	
	{
		delay(5);
		if(mode==0)
		{	mode_num++;
			while(!mode);
               TR0=0;
               write_com(0x0f);
           }
			if(mode_num==1) gotoxy(1,4);
               if(mode_num==2) gotoxy(1,7);
     		if(mode_num==3) gotoxy(1,10);
               if(mode_num==4) gotoxy(2,2);
               if(mode_num==5) gotoxy(2,5);
     		if(mode_num==6) gotoxy(2,8);
     		if(mode_num==7)
     		{
     			mode_num=0;
     			write_com(0x0c);
     			TR0=1;
     		}
      }
	if(mode_num!=0)
	{
		if(plus==0)
		{
			delay(5);
			if(plus==0)
			{
				while(!plus);
                    if(mode_num==1)
				{
					today.year++;
				     write_riqi(1,today.year/100);
                         write_riqi(3,today.year%100);
                         gotoxy(1,12);
                         display_week();
                         gotoxy(1,4);
				}
                    if(mode_num==2)
				{
					today.month++;
                         if(today.month==13) today.month=1;
				     write_riqi(6,today.month);
                         gotoxy(1,12);
                         display_week();
                         gotoxy(1,7);
				}
                    if(mode_num==3)
				{
					today.day++;
                         if(today.day>monthday(today.year,today.month))
                         today.day=1;
				     write_riqi(9,today.day);
                         gotoxy(1,12);
                         display_week();
                         gotoxy(1,10);
				}
				if(mode_num==4)
				{
					now.hour++;
					if(now.hour==24) now.hour=0;
				     write_time(1,now.hour);
                         gotoxy(2,2);
				}
				if(mode_num==5)
				{
					now.minute++;
					if(now.minute==60) now.minute=0;
					write_time(4,now.minute);
                         gotoxy(2,5);
				}
				if(mode_num==6)
				{
					now.second++;
					if(now.second==60) now.second=0;
                         write_time(7,now.second);
                         gotoxy(2,8);
				}
			}
		}
        if(dec==0)
		{
			delay(5);
			if(dec==0)
			{
				while(!dec);
                    if(mode_num==1)
				{
					today.year--;
				     write_riqi(1,today.year/100);
                         write_riqi(3,today.year%100);
                         gotoxy(1,12);
                         display_week();
                         gotoxy(1,4);
				}
                    if(mode_num==2)
				{
					today.month--;
                         if(today.month==0) today.month=12;
				     write_riqi(6,today.month);
                         gotoxy(1,12);
                         display_week();
                         gotoxy(1,7);
				}
                    if(mode_num==3)
				{
					today.day--;
                         if(today.day==0)
                         today.day=monthday(today.year,today.month);
				     write_riqi(9,today.day);
                         gotoxy(1,12);
                         display_week();
                         gotoxy(1,10);
				}
				if(mode_num==4)
				{
					now.hour--;
					if(now.hour<0) now.hour=23;
				     write_time(1,now.hour);
                         gotoxy(2,2);
				}
				if(mode_num==5)
				{
					now.minute--;
					if(now.minute<0) now.minute=59;
					write_time(4,now.minute);
                         gotoxy(2,5);
				}
				if(mode_num==6)
				{
					now.second--;
					if(now.second<0) now.second=59;
                         write_time(7,now.second);
                         gotoxy(2,8);
				}
			}
		}
     }
 }

void display_temp()
{
  uint wendu;
  uchar A1,A2;
  tmpchange(); 
  wendu=tmp();
   A1=wendu/10;
   A2=wendu%10;
  gotoxy(2,10);
  display_data(A1);
  display_string(".");
  write_date(int_to_char[A2]);    
}

void timer0(void) interrupt 1
{
     TR0=0;
     TL0=(TIMER0_COUNT & 0X00FF);//设置Timer0低八位数值
     TH0=(TIMER0_COUNT >> 8);//设置Timer0高八位数值
     TR0=1;
	count++;
     if(count==40) display_temp();
     if(count==200)
		{
			count=0;
			now.second++;
			if(now.second==60)
			{
				now.second=0;
				now.minute++;
				if(now.minute==60)
				{
					now.minute=0;
					now.hour++;
					if(now.hour==24)
					{
						now.hour=0;
                              today.day++;
                              if(today.day>monthday(today.year,today.month))
                              {
                                   today.day=1;
                                   today.month++;
                                   if(today.month==13)
                                   {
                                        today.month=1;
                                        today.year++;
                                   }
                                   write_riqi(6,today.month);
                              }
                              write_riqi(9,today.day);
                              gotoxy(1,12);
                              display_week();
					}
					write_time(1,now.hour);
				}
				write_time(4,now.minute);
			}
			write_time(7,now.second);		
		}	
}

void main()
{
	init_lcd();
     rd=0;
     timer0_initialize();
     gotoxy(1,1);
     display_string("2008/01/29 ");
     display_week();
     gotoxy(2,1);
     display_string("00:00:00");
     gotoxy(2,10);
     display_string("00.0C");
     while(1) keyscan();

}