File content as of revision 0:280c5960c707:

#include "mbed.h"

DigitalIn k1(dp9), k2(dp10), k3(dp11), k4(dp13);
DigitalOut r1(dp16), r2(dp15), r3(dp17), r4(dp18);

BusOut segments(dp2,dp1,dp28,dp6,dp5,dp27,dp26);
DigitalOut enable(dp25);
DigitalOut e2(dp23),e3(dp24);
int znakovi[16] = {0x01,0x4F,0x12,0x06,0x4C,0x24,0x20,0x0F,0x00,0x04, 0x02, 0x60, 0x72, 0x42, 0x48, 0x36};

char ocitajTast()
{
    r1 = 0; r2 = 0; r3 = 0; r4 = 0;
    
    r1 =1 ;
    if(k1 == 1) return '1';
    if(k2 == 1) return '2';
    if(k3 == 1) return '3';
    if(k4 == 1) return 'A';
    r1 = 0;
    
    r2 =1 ;
    if(k1 == 1) return '4';
    if(k2 == 1) return '5';
    if(k3 == 1) return '6';
    if(k4 == 1) return 'B';
    r2 = 0;
    
    r3 =1 ;
    if(k1 == 1) return '7';
    if(k2 == 1) return '8';
    if(k3 == 1) return '9';
    if(k4 == 1) return 'C';
    r3 = 0;
    
    r4 =1 ;
    if(k1 == 1) return '*';
    if(k2 == 1) return '0';
    if(k3 == 1) return '#';
    if(k4 == 1) return 'D';
    r4 = 0;
}



int main() {
    
    char znak ;
    int broj = 0;
    while(1) {
       znak = ocitajTast();
       switch(znak)
       {
        case '0':
        if(broj>0)
        {
            e2 = enable;
              
            
            }
        segments = znakovi[0];
        enable = 0;
        wait(1);
        enable = 1;
        broj++;
        
        break;   
                case '1':
        segments = znakovi[1];
        enable = 0;
        wait(1);
        enable = 1;
         broj++;
        break;  
                case '2':
        segments = znakovi[2];
        enable = 0;
        wait(1);
        enable = 1;
         broj++;
        break;  
                case '3':
        segments = znakovi[3];
        enable = 0;
        wait(1);
        enable = 1;
         broj++;
        break;  
                case '4':
        segments = znakovi[4];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
                 case '5':
        segments = znakovi[5];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
                case '6':
        segments = znakovi[6];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
                case '7':
        segments = znakovi[7];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
                case '8':
        segments = znakovi[8];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
               case '9':
        segments = znakovi[9];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
               case 'A':
        segments = znakovi[10];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
           case 'B':
        segments = znakovi[11];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
           case 'C':
        segments = znakovi[12];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
           case 'D':
        segments = znakovi[13];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
           case '*':
        segments = znakovi[14];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
           case '#':
        segments = znakovi[15];
        enable = 0;
        wait(1);
        enable = 1;
        break;  
        
        }
    }
}