#define dig1 2
#define dig2 3
#define dig3 4
#define dig4 5
#define a 6
#define b 7
#define c 8
#define d 9
#define e 10
#define f 11
#define g 12
#define cnl 13
#define p1 A0
#define p2 A1

int segPins[7] = {a,b,c,d,e,f,g};

int mint = 59;
int hr   = 11;
int cnt  = 0;
int cp1 = 0;
int lastBp1 = HIGH;
int lastBp2 = HIGH;
int cnthr = 0;




byte digits[10][7] = {
  {0,0,0,0,0,0,1}, 
  {1,0,0,1,1,1,1}, 
  {0,0,1,0,0,1,0}, 
  {0,0,0,0,1,1,0}, 
  {1,0,0,1,1,0,0}, 
  {0,1,0,0,1,0,0}, 
  {0,1,0,0,0,0,0}, 
  {0,0,0,1,1,1,1}, 
  {0,0,0,0,0,0,0}, 
  {0,0,0,0,1,0,0}  
};

void allDigitsOff() {
  digitalWrite(dig1, LOW);
  digitalWrite(dig2, LOW);
  digitalWrite(dig3, LOW);
  digitalWrite(dig4, LOW);
}

void showDigit(int n) {
  for (int i=0; i<7; i++) {
    digitalWrite(segPins[i], digits[n][i] ? HIGH : LOW);
  }
}

void selectDigit(int digit) {
  allDigitsOff();
  switch(digit) {
    case 1: digitalWrite(dig1, HIGH); break;
    case 2: digitalWrite(dig2, HIGH); break;
    case 3: digitalWrite(dig3, HIGH); break;
    case 4: digitalWrite(dig4, HIGH); break;
  }
}

void setup() {
  pinMode(dig1, OUTPUT);
  pinMode(dig2, OUTPUT);
  pinMode(dig3, OUTPUT);
  pinMode(dig4, OUTPUT);
  pinMode(cnl, OUTPUT);
  pinMode(p1, INPUT);
  pinMode(p2, INPUT); 

  for (int i=0; i<7; i++) pinMode(segPins[i], OUTPUT);
}

void loop() {
  int r = mint / 10;
  int s = mint % 10;
  int p = hr / 10;
  int q = hr % 10;
  

 


  int bp1 = digitalRead(p1);
  int bp2 = digitalRead(p2);

  
  if (lastBp1 == HIGH && bp1 == LOW) {
    cp1++;
    if (cp1 > 2) cp1 = 1;  
  }

  
  if (lastBp2 == HIGH && bp2 == LOW) {
    if (cp1 == 1) {
      mint++;
    } else if (cp1 == 2) {
      cnthr++;
    }
  }

  lastBp1 = bp1;
  lastBp2 = bp2;



  showDigit(p); selectDigit(1); delay(5);allDigitsOff();
  showDigit(q); selectDigit(2); delay(5);allDigitsOff();
  showDigit(r); selectDigit(3); delay(5);allDigitsOff();
  showDigit(s); selectDigit(4); delay(5);allDigitsOff();

  cnt++;
  if (cnt % 50 == 0){
    digitalWrite(cnl, LOW );
    delay(100);
    //allDigitsOff();
    }
  else { digitalWrite(cnl, HIGH );}
  if (cnt >= 3000) {   
    mint++;
    cnt = 0;
  }

  if (mint >= 60) {
    hr++;
    cnthr++;

    mint = 0;
  }
  //if (cnthr > 24) cnthr = 1;
  if (cnthr == 24) {cnthr = 0;}
  if (cnthr <= 12) {hr = cnthr;}
  if (cnthr > 12 && cnthr != 24) { hr = cnthr - 12;}
}