File content as of revision 2:6b4dda997dc0:

#include "mbed.h"
#include "DS1307.h"
#include "DigitDisplay.h"

DS1307 myrtc(I2C_SDA,I2C_SCL);
DigitDisplay display(D7,D8);
DigitalOut buzzer(D6);
BusIn b(D9,D10,D11);
BusOut led(D2,D3,D4,D5);
int mode=0;
int main() 
{
   b.mode(PullUp);
   int n=0;
   // DisplayTime();
   display.Displayset(0x77,5,5,5);
   while(1)
   {
        if(b==0b011){n=1;}
        else if(b==0b101){n=2;}
        else if(b==0b110){n=3;}
        else n=0;
        display.getButtonState(n);
        if(display.checkButton1()==1){led=0b100;mode=1;}
        else if(display.checkButton2()==1){led=0b010;mode=2;}
        else if(display.checkButton3()==1){led=0b001;mode=3;}
        
        wait_ms(100);
        
        //printf("%d\n",mode);
        
        wait_ms(100);
   }
}

void DisplayTime()
{
    int sec=0,min=35,hour=15,day=7,date=5,month=12,year=15;
    int a_hour=15,a_min=36;
    
    myrtc.settime(sec,min,hour,day,date,month,year);
  
    printf("time set : %d:%d:%d      day : %d     date set : %d:%d:%d\n  ",hour,min,sec,day,date,month,year);
    
    while(1) {
        myrtc.gettime(&sec,&min,&hour,&day,&date,&month,&year);
        printf("time read : %d:%d:%d      day : %d     date read : %d:%d:%d\n  ",hour,min,sec,day,date,month,year);
        
        display.setColon(1);
        
        if(((hour-(hour%10))/10)>0)
        {
            display.write(0, (hour-(hour%10))/10);     
            display.write(1, hour%10);    
            display.write(2, (min-(min%10))/10);    
            display.write(3, min%10);
        }
        else if(((hour-(hour%10))/10)==0 )
        {     
            display.write(0, 0xFF);
            display.write(1, hour%10);    
            display.write(2, (min-(min%10))/10);    
            display.write(3, min%10);
        }  
        if(hour==a_hour && min==a_min){buzzer=1;wait(2);buzzer=0;}
        
    }
}