#define ANODE 1
#define CATHODE 0

//set dp to -1 if you dont want dp
class SevSeg {
  public:
  SevSeg(int a, int b, int c, int d, int e, int f, int g)
  {
    A = a;
    B = b;
    C = c;
    D = d;
    E = e;
    F = f;
    G = g;
    DP = -1;
    common = CATHODE;
  }
  SevSeg(int a, int b, int c, int d, int e, int f, int g, int dp)
  {
    A = a;
    B = b;
    C = c;
    D = d;
    E = e;
    F = f;
    G = g;
    DP = dp;
    common = CATHODE;
  }

  SevSeg(int a, int b, int c, int d, int e, int f, int g, int dp, int common)
  {
    A = a;
    B = b;
    C = c;
    D = d;
    E = e;
    F = f;
    G = g;
    DP = dp;
    this->common = common;
  }
  
  void init()
  {
    pinMode(A, OUTPUT);
    pinMode(B, OUTPUT);
    pinMode(C, OUTPUT);
    pinMode(D, OUTPUT);
    pinMode(E, OUTPUT);
    pinMode(F, OUTPUT);
    pinMode(G, OUTPUT);

    if(DP >= 0)
    {
      pinMode(DP, OUTPUT);
    } else if(DP >= 0 && common == 1)
    {
      pinMode(DP, OUTPUT); 
      digitalWrite(DP,1); 
    }

    if(common)
    {
      digitalWrite(A,1);
      digitalWrite(B,1);
      digitalWrite(C,1);
      digitalWrite(D,1);
      digitalWrite(E,1);
      digitalWrite(F,1);
      digitalWrite(G,1);
    }
  }

  void enableDP(bool on)
  {
    if(DP <= -1){}
    
    if(common)
    {
      if(on)
      {
        digitalWrite(DP, LOW);
      }
      else
      {
        digitalWrite(DP, HIGH);
      }
    }
    else 
    {
      if(on)
      {
        digitalWrite(DP, HIGH);
      }
      else
      {
        digitalWrite(DP, LOW);
      }
    }
  }

  void setDigit(int8_t number)
  {
    if(number >= 0x10){ number = 0; }

    switch(number)
    {
      case 0:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, HIGH);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
        }

        break;
      case 1:

        if(common)
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        else 
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        break;
      case 2:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, LOW);
          digitalWrite(G, HIGH);
        }
        break;
      case 3:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, HIGH);
        }
        break;
      case 4:

        if(common)
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 5:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, HIGH);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, LOW);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 6:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 7:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        break;
      case 8:
        
        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 9:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, HIGH);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, LOW);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;

      case 0x0a:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 0x0b:

        if(common)
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, HIGH);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, LOW);
          digitalWrite(B, LOW);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 0x0c:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, HIGH);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
        }
        break;
      case 0x0d:

        if(common)
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, HIGH);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, LOW);
          digitalWrite(G, HIGH);
        }
        break;
      case 0x0e:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, LOW);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, HIGH);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
      case 0x0f:

        if(common)
        {
          digitalWrite(A, LOW);
          digitalWrite(B, HIGH);
          digitalWrite(C, HIGH);
          digitalWrite(D, HIGH);
          digitalWrite(E, LOW);
          digitalWrite(F, LOW);
          digitalWrite(G, LOW);
        }
        else 
        {
          digitalWrite(A, HIGH);
          digitalWrite(B, LOW);
          digitalWrite(C, LOW);
          digitalWrite(D, LOW);
          digitalWrite(E, HIGH);
          digitalWrite(F, HIGH);
          digitalWrite(G, HIGH);
        }
        break;
    }
  }

  private:
  int A,B,C,D,E,F,G,DP;
  int8_t common;
};

SevSeg seg(2,4,5,18,19,21,22,23, ANODE);
int8_t i = 0;
void setup()
{
  seg.init();
  seg.enableDP(0); //remove this if you want dp
}

void loop()
{
  if(i <= -1 || i >= 0x10){ i = 0;}
  seg.setDigit(i);
  i++;
  delay(1000);
}