/**
   ESP32 + DHT22 Example for Wokwi
   https://wokwi.com/arduino/projects/322410731508073042
*/
#include "DHTesp.h"
#include <LiquidCrystal_I2C.h>

const int DHT_PIN = 15;
const int LED_red = 13;    //red
const int LED_green = 12;  //green
const int LED_blue = 14;   //blue
DHTesp dhtSensor;
LiquidCrystal_I2C lcd(0x27, 16, 2); 
const int maxTemp = 65; //Angabe des Max-Temperaturs
const int minTemp = 55; //Angabe des Min-Temperaturs
float t = 0;
void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LED_red, OUTPUT); //OUTPUT: LEDs sind erstmals aus
  pinMode(LED_blue, OUTPUT);
  pinMode(LED_green, OUTPUT);
  lcd.init();                      
  lcd.backlight();
  lcd.setCursor(0,0);
}
void loop() {
  lcd.clear();
  t = dhtSensor.getTemperature();
  lcd.setCursor(0,1);
  lcd.print(t);
  lcd.print(" Grad"); //Anzeige an Tabelle
  if (t<minTemp) {  //If-Verfahren
      activateLED(LED_blue);
  }else if (t>maxTemp) {
    activateLED(LED_red);
  }
  else {
    activateLED(LED_green);
  }
  delay(1000);
}
void activateLED(int led){ 
    digitalWrite(LED_blue, LOW);
    digitalWrite(LED_red, LOW);
    digitalWrite(LED_green, LOW);
    digitalWrite(led, HIGH); //LEDs, die die Klausel erfüllen, gehen an, währen die Anderen aus gehen
}