/**************
Name: Ivan Ivanov
Datum: 02.04.2024
Übung: Eieruhr mit Startbutton, variable Zeit und Buzzer
**********/
int minu = 0;
int sek = 0;
int potValue = 0;
int mappedZeit = 0;
bool count = false; // Variable, um den zählstatus zu verfolgen

void setup() 
{
  // put your setup code here, to run once:
  pinMode(13, OUTPUT);
  pinMode(7, INPUT_PULLUP);
  pinMode(8, OUTPUT);
  Serial.begin(9600);
  Serial.println("Eieruhr");
}

void loop() 
{
  // put your main code here, to run repeatedly:
  if (!count) 
  {
    // Der Potentiometer lesen
    potValue = analogRead(A2);
    mappedZeit = map(potValue, 0, 1023, 30, 260); // 30 sekunden bis 4 minuten 20 sekunden

    
    Serial.print("Selected Time: ");
    Serial.print(mappedZeit / 60); 
    Serial.print(":");
    Serial.println(mappedZeit % 60); 

    
    if (digitalRead(7) == LOW) 
	{
      count = true;
      minu = mappedZeit / 60;
      sek = mappedZeit % 60;
    }
  }

  if (count) 
  {
    delay(1100);
    sek--;

    Serial.print(minu);
    Serial.print(":");
    Serial.println(sek);
    
    if (minu == 0 && sek == 0) 
	{
      Serial.println("Zeit is abgelaufen");

      while (digitalRead(7) == HIGH) 
	  {
        digitalWrite(13, HIGH);
        delay(400);
        digitalWrite(13, LOW);
        delay(400);
        
        // buzzer beepen
        tone(8, 1000); // tone spielen mit 1000Hz
        delay(200);
        noTone(8); // tone stoppen
        delay(200);
      }

      count = false;
    }
    
    if (sek == 0) 
	{
      minu--;
      sek = 59;
    }
  }
}