int pinA = 11;
int pinB = 7;
int pinC = 4;
int pinD = 2;
int pinE = 1;
int pinF = 10;
int pinG = 5;
int DIG1 = 12;
int DIG2 = 9;
int DIG3 = 8;
int DIG4 = 6;
int pinP = 3;
int BUTT = 13;
int sekunde;
int holder;
int val = 0;
int mode = 1;
int skaits = 0;




void setup() {
  pinMode(pinA, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(pinC, OUTPUT);
  pinMode(pinD, OUTPUT);
  pinMode(pinE, OUTPUT);
  pinMode(pinF, OUTPUT);
  pinMode(pinG, OUTPUT);
  pinMode(DIG1, OUTPUT);
  pinMode(DIG2, OUTPUT);
  pinMode(DIG3, OUTPUT);
  pinMode(DIG4, OUTPUT);
  pinMode(pinP, OUTPUT);
  pinMode(BUTT, INPUT);
}

void loop() {
  if (digitalRead(BUTT) == HIGH) {mode++;}

  
  for (holder=0; holder < 2000; holder++) { 
    
    cipars(0);
    skaitlis(sekunde%10);
    cleardigit();
    if (digitalRead(BUTT) == HIGH) {mode++;}
    clearnumber();

    cipars(3);
    skaitlis(sekunde%60/10%10);
    cleardigit();
    clearnumber();

    cipars(2);
    skaitlis(sekunde/60%10);
    cleardigit();
    clearnumber();
    

    cipars(1);
    skaitlis(sekunde/10/60%10);
    cleardigit();
    clearnumber();  
  }
  
  if (mode == 1){
  sekunde++;
 }
  else if (mode >= 2){
    skaits++;
    if (skaits == 5){
      skaits = 0;
      sekunde = 0;
      mode = 1;
    }
  }
 


}

void cleardigit(void)
{
  digitalWrite(DIG1, LOW);
  digitalWrite(DIG2, LOW);
  digitalWrite(DIG3, LOW);
  digitalWrite(DIG4, LOW);
}

void cipars(int x)
{
  switch(x)
  {
  case 1: 
    digitalWrite(DIG1, HIGH);
    digitalWrite(pinP, HIGH);
    break;
  case 2: 
    digitalWrite(DIG2, HIGH);
    digitalWrite(pinP, LOW);
    break;
  case 3: 
    digitalWrite(DIG3, HIGH);
    digitalWrite(pinP, HIGH);
    break;
  default: 
    digitalWrite(DIG4, HIGH);
    digitalWrite(pinP, HIGH);
    break;
  }
}

void skaitlis(int x)
{
  switch(x)
  {
  default: 
    zero();
    break;
  case 1: 
    one(); 
    break;
  case 2: 
    two(); 
    break;
  case 3: 
    three(); 
    break;
  case 4: 
    four(); 
    break;
  case 5: 
    five(); 
    break;
  case 6: 
    six(); 
    break;
  case 7: 
    seven(); 
    break;
  case 8: 
    eight(); 
    break;
  case 9: 
    nine(); 
    break;
  }
}
void zero()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, LOW);
  digitalWrite(pinF, LOW);
  digitalWrite(pinG, HIGH);
}
 
void one()
{
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, HIGH);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, HIGH);
  digitalWrite(pinG, HIGH);
}
 
void two()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, HIGH);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, LOW);
  digitalWrite(pinF, HIGH);
  digitalWrite(pinG, LOW);
}
 
void three()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, HIGH);
  digitalWrite(pinG, LOW);
}
 
void four()
{
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, HIGH);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, LOW);
  digitalWrite(pinG, LOW);
}
 
void five()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, HIGH);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, LOW);
  digitalWrite(pinG, LOW);
}
 
void six()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, HIGH);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, LOW);
  digitalWrite(pinF, LOW);
  digitalWrite(pinG, LOW);
}
 
void seven()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, HIGH);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, HIGH);
  digitalWrite(pinG, HIGH);
}
 
void eight()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, LOW);
  digitalWrite(pinF, LOW);
  digitalWrite(pinG, LOW);
}
 
void nine()
{
  digitalWrite(pinA, LOW);
  digitalWrite(pinB, LOW);
  digitalWrite(pinC, LOW);
  digitalWrite(pinD, LOW);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, LOW);
  digitalWrite(pinG, LOW);
}

void clearnumber()
{
  digitalWrite(pinA, HIGH);
  digitalWrite(pinB, HIGH);
  digitalWrite(pinC, HIGH);
  digitalWrite(pinD, HIGH);
  digitalWrite(pinE, HIGH);
  digitalWrite(pinF, HIGH);
  digitalWrite(pinG, HIGH);  
}