#include <LiquidCrystal.h>
#include <DHT.h>
LiquidCrystal lcd(21,19,18,5,17,16);
DHT  dht(27,DHT22);
byte buttonPin_1=13;
byte buzzer_pin=14; 
unsigned long event_1=10;

void setup()
 {
  // put your setup code here, to run once:
  dht.begin();
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  lcd.begin(16,2);
  lcd.setCursor(1,0);
  lcd.print("HAI"); 

  pinMode(buttonPin_1, INPUT_PULLUP);
  pinMode(buzzer_pin, OUTPUT);


}
  
void loop()
 {   

  byte buttonStatus_1=digitalRead(buttonPin_1); 
  float temperature = dht.readTemperature();
  
  Serial.print("Temperature:"); 
  Serial.print(temperature);
  Serial.print(char(176));
  Serial.println("C");
 

  lcd.clear();
  lcd.setCursor(1,1);
  lcd.print("TEMP:");
  lcd.setCursor(6,1);
  lcd.println(temperature);
  lcd.setCursor(11,1);
  lcd.print(char(223));
  lcd.print("C");
  
  
  
  
  checkAlarm(temperature); 
  delay(1000);
  
  // if(temperature !=DHT11)
  // put your main code here, to run repeatedly:
  // this speeds up the simulation
 }

  void checkAlarm(float temperature)
  {
    if(temperature>75.0) 
    {
      activateBuzzer();
    
    } 
    if(temperature<75.0)
    {
      digitalWrite(buzzer_pin, LOW);
      Serial.println("buzzer off");
    }
    
  } 

    
    void activateBuzzer()
    {
      digitalWrite(buzzer_pin,HIGH);
      Serial.println("buzzer on");
      
    }