File content as of revision 2:c696dfd53eeb:

#include "mbed.h"
DigitalIn sw1(PE_12);
DigitalIn sw2(PE_14);
int d = 0,dd = 0,m = 0,mm = 0,y = 0,yy = 0,yyy = 0,yyyy = 0, pointer = 0, h = 0, hh = 0, mi = 0, mmi = 0, s = 0, ss = 0;
TextLCD lcd(D9,D8,D7,D6,D4,D2);




void display_date_time()
{
    lcd.locate(0,0);
    lcd.printf("%i", d);
    lcd.locate(1,0);
    lcd.printf("%i", dd);
    lcd.locate(3,0);
    lcd.printf("%i", m);
    lcd.locate(4,0);
    lcd.printf("%i", mm);
    lcd.locate(6,0);
    lcd.printf("%i", y);
    lcd.locate(7,0);
    lcd.printf("%i", yy);
    lcd.locate(8,0);
    lcd.printf("%i", yyy);
    lcd.locate(9,0);
    lcd.printf("%i", yyyy);  
    lcd.locate(0,1);
    lcd.printf("%i", h);
    lcd.locate(1,1);
    lcd.printf("%i", hh);
    lcd.locate(3,1);
    lcd.printf("%i", mi);
    lcd.locate(4,1);
    lcd.printf("%i", mmi);
    lcd.locate(6,1);
    lcd.printf("%i", s);
    lcd.locate(7,1);
    lcd.printf("%i", ss);
} 

void display_time()
{
    lcd.locate(0,1);
    lcd.printf("%i", h);
    lcd.locate(1,1);
    lcd.printf("%i", hh);
    lcd.locate(2,1);
    lcd.printf(":");
    lcd.locate(3,1);
    lcd.printf("%i", mi);
    lcd.locate(4,1);
    lcd.printf("%i", mmi);
    lcd.locate(5,1);
    lcd.printf(":");
    lcd.locate(6,1);
    lcd.printf("%i", s);
    lcd.locate(7,1);
    lcd.printf("%i", ss);
} 

void display_dates()
{
    lcd.locate(0,0);
    lcd.printf("%i", d);
    lcd.locate(1,0);
    lcd.printf("%i", dd);
    lcd.locate(2,0);
    lcd.printf(":");
    lcd.locate(3,0);
    lcd.printf("%i", m);
    lcd.locate(4,0);
    lcd.printf("%i", mm);
    lcd.locate(5,0);
    lcd.printf(":");
    lcd.locate(6,0);
    lcd.printf("%i", y);
    lcd.locate(7,0);
    lcd.printf("%i", yy);
    lcd.locate(8,0);
    lcd.printf("%i", yyy);
    lcd.locate(9,0);
    lcd.printf("%i", yyyy);
}   


void update_date_and_time()
{
    if (pointer == 0)
    {
        lcd.locate(0,0);
        lcd.printf("%i", d);
    }
    
    if (pointer == 1)
    {
        lcd.locate(1,0);
        lcd.printf("%i", dd);
    }
    
    if (pointer == 2)
    {
        lcd.locate(3,0);
        lcd.printf("%i", m);
    }
    
    if (pointer == 3)
    {
        lcd.locate(4,0);
        lcd.printf("%i", mm);
    }
    
    if (pointer == 4)
    {
        lcd.locate(6,0);
        lcd.printf("%i", y);
    }
    
    if (pointer == 5)
    {
        lcd.locate(7,0);
        lcd.printf("%i", yy);
    }
    if (pointer == 6)
    {
        lcd.locate(8,0);
        lcd.printf("%i", yyy);
    }
    
    if (pointer == 7)
    {
        lcd.locate(9,0);
        lcd.printf("%i", yyyy);
    }  
    if (pointer == 8)
    {
        lcd.locate(0,1);
        lcd.printf("%i", h);
    }
    if (pointer == 9)
    {
        lcd.locate(1,1);
        lcd.printf("%i", hh);
    }
    
    if (pointer == 10)
    {
        lcd.locate(3,1);
        lcd.printf("%i", mi);
    } 
    if (pointer == 11)
    {
        lcd.locate(4,1);
        lcd.printf("%i", mmi);
    }
    if (pointer == 12)
    {
        lcd.locate(6,1);
        lcd.printf("%i", s);
    }
    
    if (pointer == 13)
    {
        lcd.locate(7,1);
        lcd.printf("%i", ss);
    } 
} 

void select_date()
{
     if (sw2 == 1)
     {
         wait (0.2);
         pointer++;
     }
     else if(pointer != 14)
     {
        switch (pointer)
        {
        case 0: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    d++;
                    if (d == 4)
                    {
                        d = 0;
                    }
                }
        case 1: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    dd++;
                    if (dd == 10)
                    {
                        dd = 0;
                    }
                }
        case 2: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    m++;
                    if (m == 2)
                    {
                        m = 0;
                    }
                }
        case 3: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    mm++;
                    if (mm == 10)
                    {
                        mm = 0;
                    }
                }
        case 4: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    y++;
                    if (y == 3)
                    {
                        y = 0;
                    }
                }
        case 5: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    yy++;
                    if (yy == 10)
                    {
                        yy = 0;
                    }
                }
        case 6: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    yyy++;
                    if (yyy == 10)
                    {
                        yyy = 0;
                    }
                }
        case 7: 
            if (sw1 == 1)
                {
                    wait (0.2);
                    yyyy++;
                    if (yyyy == 10)
                    {
                        yyyy = 0;
                    }
                }
        case 8:
            if (sw1 == 1)
                {
                    wait (0.2);
                    h++;
                    if (h== 3)
                    {
                        h = 0;
                    }
                }
        case 9:
            if (sw1 == 1)
                {
                    wait (0.2);
                    hh++;
                    if (hh == 10)
                    {
                        hh = 0;
                    }
                }
        case 10:
            if (sw1 == 1)
                {
                    wait (0.2);
                    mi++;
                    if (mi == 6)
                    {
                        mi = 0;
                    }
                }
        case 11:
            if (sw1 == 1)
                {
                    wait (0.2);
                    mmi++;
                    if (mmi == 10)
                    {
                        mmi = 0;
                    }
                }
        case 12:
            if (sw1 == 1)
                {
                    wait (0.2);
                    s++;
                    if (s == 6)
                    {
                        s = 0;
                    }
                }
        case 13:
            if (sw1 == 1)
                {
                    wait (0.2);
                    ss++;
                    if (ss == 10)
                    {
                        ss = 0;
                    }
                }
        
        
        
        }
    }
update_date_and_time();
}