#include <SevSeg.h>
SevSeg S1;
SevSeg S2;
SevSeg S3;
SevSeg S4;


int i = 60;
int j = 20;
int k = 20;
int l = 20;

int D1 = 9;
int D2 = 10;

int count = 0;
int count1 = 0;
int count2 = 0;
int count3 = 0;
boolean a = true;


unsigned long previoustime=0;
unsigned long currenttime;


void setup() 
{
byte digitPins_1[] = {9,10}; 
byte segmentPins_1[] = {2, 3, 4, 5, 6, 7, 8}; 
S1.begin(COMMON_ANODE, 2, digitPins_1, segmentPins_1);

byte digitPins_2[] = {11,12}; 
byte segmentPins_2[] = {14,15,16,17,18,19,20}; 
S2.begin(COMMON_ANODE, 2, digitPins_2, segmentPins_2);

byte digitPins_3[] = {29,30}; 
byte segmentPins_3[] = {22,23,24,25,26,27,28}; 
S3.begin(COMMON_ANODE, 2, digitPins_3, segmentPins_3);

byte digitPins_4[] = {38,39}; 
byte segmentPins_4[] = {31,32,33,34,35,36,37}; 
S4.begin(COMMON_ANODE, 2, digitPins_4, segmentPins_4);


S1.setBrightness(90);
S2.setBrightness(90);
S3.setBrightness(90);
S4.setBrightness(90);



}

void loop() 
{
  if (count == 0)
  {
    i = 60;
    j = 40;
    k = 20;
    l = 20;
    count = 1;
  }

  currenttime=millis();
  if(currenttime-previoustime==1000)
  {
    
    previoustime = currenttime;

    S4.setNumber(l);
    S4.refreshDisplay();

    S3.setNumber(k);
    S3.refreshDisplay();

    S2.setNumber(j);
    S2.refreshDisplay();

    S1.setNumber(i);
    S1.refreshDisplay();




    i--;
    j--;
    k--;
    l--;








    if (l == 0)
    {
      l = 60;
      k = 20;
    }
        if (k == 0)
    {
      k = 60;
      j = 20;
    }
        if (j == 0)
    {
      j = 60;
      i = 20;
    }
        if (i == 0)
    {
      i = 60;
      j = 40;
      k = 20;
      l = 20;
    }

    
  }
  S1.refreshDisplay();
  S2.refreshDisplay();
  S3.refreshDisplay();
  S4.refreshDisplay();
// } 

  // currenttime=millis();
  // if(currenttime-previoustime==1000)
  // {
  //   previoustime = currenttime;
  //   S4.setNumber(l);
  //   l--;

  // }
  // S4.refreshDisplay();

  // currenttime=millis();
  // if(currenttime-previoustime==1000)
  // {
  //   previoustime = currenttime;
  //   S3.setNumber(k);
  //   k--;

  // }
  // S3.refreshDisplay();

  // currenttime=millis();
  // if(currenttime-previoustime==1000)
  // {
  //   previoustime = currenttime;
  //   S2.setNumber(j);
  //   j--;

  // }
  // S2.refreshDisplay();

  // currenttime=millis();
  // if(currenttime-previoustime==1000)
  // {
  //   previoustime = currenttime;
  //   S1.setNumber(i);
  //   i--;

  // }
  // S1.refreshDisplay();

  
}

// void display(int num, int a1, int b1, int c1, int d1, int e1, int f1, int g1, int D1, int D2)
// {
//   for(int num = 15; num >= 10; num--)
//   {
//     digitalWrite(D1, HIGH);
//     digitalWrite(D2, LOW);

//     digitalWrite(a1, LOW);
//     digitalWrite(b1, HIGH);
//     digitalWrite(c1, HIGH);
//     digitalWrite(d1, LOW);
//     digitalWrite(e1, LOW);
//     digitalWrite(f1, LOW);
//     digitalWrite(g1, LOW);

//   }

//     for(int num = 9; num >= 0; num--)
//   {
//     digitalWrite(D1, HIGH);
//     digitalWrite(D2, LOW);

//     digitalWrite(a1, HIGH);
//     digitalWrite(b1, HIGH);
//     digitalWrite(c1, HIGH);
//     digitalWrite(d1, HIGH);
//     digitalWrite(e1, HIGH);
//     digitalWrite(f1, HIGH);
//     digitalWrite(g1, LOW);

//   }

// }