/**********************************************
Sammt Luca
LCD Display
25.04.2024                                     *
2AHME                                          *
***********************************************/

#include <LiquidCrystal.h>


LiquidCrystal lcd(12, 11, 10, 9, 8, 7); // LCD-Pins

const int Button_Pin = 5; // Taster-Pin 
const int analogInputPin = A0; 

bool measurementActive = false; // Variable für den Messstatus
unsigned long startTime = 0;    // Startzeit der Messung


enum Messwert {
  EIN,
  AUS
};

Messwert Messwertstate = EIN;


void setup() {
  pinMode(Button_Pin, INPUT_PULLUP);
  lcd.begin(16, 2);
}

void loop() {

  switch(Messwertstate) {
    case EIN:
     if (digitalRead(Button_Pin) == LOW && !measurementActive) {
      measurementActive = true;
      startTime = millis();
      lcd.clear();
      lcd.print("MESSUNG AKTIV");
      }
     if (measurementActive && millis() - startTime >= 500) {
      startTime = millis();
      int sensorValue = analogRead(analogInputPin);
      lcd.setCursor(0, 1);   
      lcd.print("Wert: ");
      lcd.print(sensorValue);

  }
     else Messwertstate = AUS;
    break;


    case AUS:
     if ((digitalRead(Button_Pin) == LOW && measurementActive) || (millis() - startTime >= 10000)) {
     measurementActive = false;
     lcd.clear();
     lcd.print("MESSUNG INAKTIV");
  }
    else  Messwertstate = EIN;
    break;

  }

}