#include <fDigitsSegtPin.h>
fDigitsSegtPin Display(6, 5, 9, 4, 8, 13, 3, 12, 11, 7, 2, 10);
bool isActive = false;
unsigned long elapsedTime = 0;
unsigned long startTime = 0;
unsigned long currTime = 0;
int lastStartButton = LOW;
int currStartButton = LOW;
int lastClearButton = LOW;
int currClearButton = LOW;
unsigned long timer;
int sec = 0;

void setup() {
  Display.begin();
  pinMode(1, INPUT_PULLUP);
  pinMode(0, INPUT_PULLUP);
}

void StartStop()
{
  isActive = !isActive;
  if(isActive)
  {
    startTime = currTime - elapsedTime;
  }
}

void PushStartButton()
{
  if(timer + 50 > millis())
  {
    currStartButton = digitalRead(1);
    if(lastStartButton == HIGH && currStartButton == LOW)
    {
      StartStop();
    }
  }
  lastStartButton = currStartButton;
  timer = millis();
}

void PushClearButton()
{
  if(timer + 50 > millis())
  {
    currClearButton = digitalRead(0);
    if(lastClearButton == HIGH && currClearButton == LOW)
    {
      if(!isActive)
      {
        elapsedTime = 0;
      }
    }
  }
  lastClearButton = currClearButton;
  timer = millis();
}

void loop() {
  currTime = millis();
  PushStartButton(); 
  PushClearButton();
  if(isActive)
  {
    elapsedTime = currTime - startTime;
  }
  
  sec = elapsedTime / 1000;
  Display.print(sec);

}