File content as of revision 0:4f67859595b2:

#include "mbed.h"
#include "SLCD.h"

time_t seconds = time(NULL); // needed to start rtc

SLCD slcd;
Timer scroll;

InterruptIn setmin (SW1);
InterruptIn sethour (SW3);

struct tm t;

int i,j,k,lastscroll,display,minute,hour,colon,dp;
char message[80];
void scroll_message();
char buffer[32];

void setminIRQ();
void sethourIRQ();


main()
{   
    
    slcd.LCD_All_Segments_ON();
    wait(.5);
    slcd.LCD_All_Segments_OFF ();
    wait(.5);
    slcd.printf("    ");
    wait(.5);
    slcd.COLON_ON();
    wait(.5);
    slcd.DP1_ON();
    wait(.5);
    slcd.DP2_ON();
    wait(.5);
    slcd.DP3_ON();
    wait(.5);   
    slcd.printf("8888");
    wait(.5);
    slcd.COLON_OFF();
    wait(.5);
    slcd.DP1_OFF();
    wait(.5);
    slcd.DP2_OFF();
    wait(.5);
    slcd.DP3_OFF();
    wait(.5);
    slcd.DP1_ON();
    wait(.5);
    slcd.DP2_ON();
    wait(.5);
    slcd.DP3_ON();
    wait(.5); 
    slcd.LCD_All_Segments_OFF();     
    
    sprintf(message, "    1234567890    ABCDEFGHIJKLMNOPQRSTUVWXYZ");
                
    scroll.start();
    while (i<44){
        
        while (i<44) {
            scroll_message();                     
        }
    }
     
    
   setmin.rise(setminIRQ);
   sethour.rise(sethourIRQ);
     
  while(1){
    
    time_t seconds = time(NULL); 
        
    if(display>14) {
        strftime(buffer, 4, "%H%M", localtime(&seconds));colon=1;dp=0;;
        }
        else{strftime(buffer, 4, "%M%S", localtime(&seconds));dp=1;colon=0;}
      
    if(colon){slcd.COLON_ON();slcd.DP2_OFF();}
    if(dp){slcd.DP2_ON();slcd.COLON_OFF();}
    slcd.printf(buffer);
    wait(.25);
    if(colon)slcd.COLON_ON();
    if(dp){slcd.DP2_OFF();slcd.COLON_OFF();}
    slcd.printf(buffer);
    display++;
    if (display>19)display=0;
     wait(.25); 
       
 } 
}   

void scroll_message()
{
    if (scroll.read_ms() > lastscroll + 200) {
        scroll.reset();
        if (i > 44) {
            i=0;
        }
        int j, k = i;
        for (j = 0; j < 4; j++) {
            if (message[k+j]) {
                slcd.putc(message[k+j]);
            } else {
                slcd.putc(' ');
                k--;
            }
        }
        i++;
        lastscroll=scroll.read_ms();
    }
}

void setminIRQ(void)
{
    display=15;
    time_t seconds = time(NULL);
    char buffer[2]; 
    strftime(buffer, 2,"%H", localtime(&seconds));
    hour = atoi(buffer);     
    strftime(buffer, 2,"%M", localtime(&seconds));
    minute = atoi(buffer);
    minute++;
    if(minute>59) minute=0;     
    t.tm_sec = 0; 
    t.tm_min = minute;  
    t.tm_hour = hour;   
    t.tm_mday = 28;  
    t.tm_mon = 1;     
    t.tm_year = 114;  
    set_time (mktime(&t));
    
}

void sethourIRQ(void)
{
    display=15;
    time_t seconds = time(NULL);
    char buffer[2];
    strftime(buffer, 2,"%M", localtime(&seconds));
    minute = atoi(buffer);      
    strftime(buffer, 2,"%H", localtime(&seconds));
    hour = atoi(buffer);
    hour++;
    if(hour>23) hour=0;     
    t.tm_sec = 0; 
    t.tm_min = minute;  
    t.tm_hour = hour;   
    t.tm_mday = 28;  
    t.tm_mon = 1;     
    t.tm_year = 114;  
    set_time (mktime(&t));
    
}