#include <WiFi.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
#include<WiFiClient.h>
#include<FirebaseESP32.h>
const char* ssid     = "Wokwi-GUEST";
const char* password = "";
const char* url     = "https://dht-with-relay-default-rtdb.firebaseio.com/";
const char* key = "fhN6D89pwWI11SFkg2IW6V8acZ69RBOrFweDQTSZ";
const int relay = 2;
#include <DHT.h>
//#include <DHT_U.h>
#define DHTPIN 15
#define DHTTYPE    DHT22
DHT dht(DHTPIN, DHTTYPE);
FirebaseData fbdo;
void setup()
{
    //pinMode(18,OUTPUT);
    Firebase.begin(url,key);
    Serial.begin(115200);
    delay(10);
    dht.begin();
    lcd.init();
    lcd.backlight();
    lcd.begin(16,2);
    pinMode(relay,OUTPUT);
    Serial.print("Connecting to ");
    Serial.println(ssid);

    WiFi.begin(ssid, password);

    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }

    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
    Firebase.reconnectWiFi(true);
}
void loop()
{
    
     //sensors_event_t event;
    //dht.temperature().getEvent(&event);
    //float temp=event.temperature;
    float humi = dht.readHumidity();
    lcd.setCursor(0,0);
    lcd.println("humidity :");
    lcd.print(humi);
    float temp = dht.readTemperature();
    lcd.println("temperature :");
    lcd.setCursor(0,1);
    lcd.println("temp :");
    lcd.print(temp);
    Serial.println("humidity"+ String(humi));
    Firebase.setFloat(fbdo,"humidity",humi);
    Serial.println("temperature"+ String(temp));
    Firebase.setFloat(fbdo,"temperature",temp);
    if(humi < 40)
    {
        digitalWrite(relay,HIGH);
    }
    else{
        digitalWrite(relay,LOW);
    }
    delay(1000);
    Serial.println("humi:");
    Serial.print(humi);

}