File content as of revision 0:ac4b5a202204:

#include "mbed.h"


Serial pc(SERIAL_TX, SERIAL_RX);

AnalogIn analog_value(A1);

DigitalOut ledOP(D2); 

BusOut ledS1(D8, D9, D10, D11);
BusOut ledS2(D12, D13, D14, D15);


int main() {
    pc.printf("DC VOLTMETER \n");
    
    while(1) {
        float value = analog_value.read(); // Converts and read the analog input value (value from 0.0 to 1.0)
            value = (value * 3300)/1000.0; // Change the value to be in the 0 to 3300 range

        ledOP = 1;
        pc.printf("%f \n",value);
        
        int change = (int)value;
        float sub = (value*10) - ((float)change*10);
        ledS2 = change;
        ledS1 = (int)sub;
        
    
        /*
        if(value >= 1.0 && value < 2.0)
        {
            ledS2 = 1;
            if(value >= 1.1 && value < 1.2)
               ledS1 = 1;
            else if(value >= 1.2 && value < 1.3)
               ledS1 = 2;
            else if(value >= 1.3 && value < 1.4)
               ledS1 = 3;
            else if(value >= 1.4 && value < 1.5)
               ledS1 = 4;
            else if(value >= 1.5 && value < 1.6)
               ledS1 = 5;
            else if(value >= 1.6 && value < 1.7)
               ledS1 = 6;
            else if(value >= 1.7 && value < 1.8)
               ledS1 = 7;
            else if(value >= 1.8 && value < 1.9)
               ledS1 = 8;
            else if(value >= 1.9)
               ledS1 = 9;
            else
               ledS1 = 0;
        }
        else if(value >=2.0 && value < 3.0)
        {
            ledS2 = 2;
            if(value >= 2.1 && value < 2.2)
               ledS1 = 1;
            else if(value >= 2.2 && value < 2.3)
               ledS1 = 2;
            else if(value >= 2.3 && value < 2.4)
               ledS1 = 3;
            else if(value >= 2.4 && value < 2.5)
               ledS1 = 4;
            else if(value >= 2.5 && value < 2.6)
               ledS1 = 5;
            else if(value >= 2.6 && value < 2.7)
               ledS1 = 6;
            else if(value >= 2.7 && value < 2.8)
               ledS1 = 7;
            else if(value >= 2.8 && value < 2.9)
               ledS1 = 8;
            else if(value >= 2.9)
               ledS1 = 9;
            else
               ledS1 = 0;  
        }
        else if(value >=3.0)
        {
            ledS2 = 3;
            if(value >= 3.1 && value < 3.2)
               ledS1 = 1;
            else if(value >= 3.2 && value < 3.29 )
               ledS1 = 2;
            else if(value >= 3.25 )
               ledS1 = 3;
            else
               ledS1 = 0;
        }
        else
        {
            ledS2 = 0;
            if(value >= 0.1 && value < 0.2)
               ledS1 = 1;
            else if(value >= 0.2 && value < 0.3)
               ledS1 = 2;
            else if(value >= 0.3 && value < 0.4)
               ledS1 = 3;
            else if(value >= 0.4 && value < 0.5)
               ledS1 = 4;
            else if(value >= 0.5 && value < 0.6)
               ledS1 = 5;
            else if(value >= 0.6 && value < 0.7)
               ledS1 = 6;
            else if(value >= 0.7 && value < 0.8)
               ledS1 = 7;
            else if(value >= 0.8 && value < 0.9)
               ledS1 = 8;
            else if(value >= 0.9)
               ledS1 = 9;
            else
               ledS1 = 0;
        }*/
        
        wait(0.1); // 100 ms
    }
}

/*
BusOut myleds(D12, D13, D14, D15);
 
int main() {
    while(1) {
        for(int i=0; i<10; i++) {
            myleds = i;
            wait(0.25);
        }
    }
}
*/