51单片机做的12864万年历

#include "reg52.h"
#include "macroconst.h"
#include "keyscan.h"
#include "screen.h"
#include "18b20.h"
#include "ds1302.h"
#include "atao_12864.h"
#include "24c02.h"
idata unsigned char state1[1];												
unsigned char   screennum=1;//屏幕号
#define time_task_sec 200   //节拍200Hz
#define clock 24000000 	    //晶振
#define max_task  4		    //最大任务数
idata   unsigned char  task_delay[4];
#define task_delay0  time_task_sec/1	//2赫兹18b20
#define task_delay1  time_task_sec/5	//10赫兹屏幕
#define task_delay2  time_task_sec/3	//4赫兹1302
#define task_delay3  time_task_sec/20	//20赫兹键盘

void init()
{  
   unsigned char i;
   
   init18b20();
   ds1302_init();
   initina1(); //---------------------------LCD字库初始化程序
   RdFromROM(state1,8,1);
   state[0]=state1[0]; //-------界面
   RdFromROM(state1,15,1);
   state[1]=state1[0];//------- 闹钟
   RdFromROM(state1,11,1);
   key_sound=state1[0];//-------按键音
//   state[2]=state1[2];
//   state[3]=state1[3];
   screennum=1;//------默认一号屏
   for(i=0;i<max_task;i++)//清除任务延时
   {task_delay[i]=0;}
   TMOD=0x11;
   EA=1;
   TH0=255-clock/time_task_sec/12/526;
   TL0=255-clock/time_task_sec/12%526;
   ET0=1;
   TR0=1;
}


void main()
{
 init();
 while(1)
   {   if(task_delay[0]==0){readtemp();              task_delay[0]=task_delay0;}
       if(task_delay[3]==0){MenuCheckKey();          task_delay[3]=task_delay1;}
	   if(task_delay[1]==0){screen_select(screennum);task_delay[1]=task_delay1;}
	   if(task_delay[2]==0){ds1302_read_time();      task_delay[2]=task_delay0;}
   }
}

void timer0() interrupt 1 
{
    uchar i=0;
    TH0=255-clock/time_task_sec/12/526;
    TH1=255-clock/time_task_sec/12%526;
	for(i=0;i<max_task;i++)if(task_delay[i]) task_delay[i]--; // miao=21,fen=33,xiaomiao=94;
  if(ma_start==1)
 {	
  tt++;
  if(tt==8)
   {
    tt=0;xiaomiao++;
     if(xiaomiao==99)
      {
	   xiaomiao=0;miao++;
        if(miao==60)
         {
		  miao=0;fen++;
          if(fen==99)
		   {
		   fen=0;
		   }
         }
      }
    }
  }
}