1234.c

该程序是用C编写的

asm(".include hardware.inc");
extern int Sec;
extern int Min;
extern int Hour;
extern int day;
extern int month;
extern int year;
extern int i5;



void irq_change(void){
i5=0;
++Sec;
if(Sec==60)Sec=0,++Min;
if(Min==60)Min=0,++Hour;
//if(Hour==24)Hour=0,++day;
if(day==31&&month==12&&Hour==24) Hour=0,day=1,++year,month=1;
if((year-2000)%4==0){                               //闰年
   if(month==2&&day==29&&Hour==24)Hour=0,day=1,++month;
   else if(day==31&&Hour==24&&(month==1||month==3||month==5||month==7||month==8||month==10))
          Hour=0,day=1,++month;     
        else if(day==30&&Hour==24)Hour=0, day=1,++month;}
else  {if(day==31&&Hour==24&&(month==1||month==3||month==5||month==7||month==8||month==10))     //平年
          Hour=0,day=1,++month;     
       else if(day==28&&month==2&&Hour==24)Hour=0, day=1,++month;
            else if(day==30&&month!=12&&Hour==24)Hour=0,day=1,++month;
       } 
if(Hour==24)Hour=0,day++;       
   asm("[P_Watchdog_Clear]=%0"::"r"(0x0001));  
 return;       
 }