#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#define DHT_PIN 19
#define DHT_TIP DHT22
#define SDA 12
#define SCL 13

DHT dht_sensor(DHT_PIN, DHT_TIP);
LiquidCrystal_I2C lcd(0x27,20,4);

void setup(){
  Serial.begin(9600);
  dht_sensor.begin();

  Wire.begin(SDA, SCL);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(2,0);
  lcd.print("TERMO HIGROMETRO");
  lcd.setCursor(3,3);
  lcd.print("GIULIA ANDRADE");
}

void loop(){
  float humi  = dht_sensor.readHumidity();
  float tempC = dht_sensor.readTemperature();
  float tempF = dht_sensor.readTemperature(true);
  float tempK = tempC + 273;

  if ( isnan(tempC) || isnan(tempF) || isnan(humi)) {
    Serial.println("falha ao ler o sensor dht!");
    lcd.setCursor(3,1);
    lcd.print("Falha ao ler o");
    lcd.setCursor(5,2);
    lcd.print("sensor DHT");

  } else {
    Serial.print("Umidade: ");
    Serial.print(humi);
    Serial.print("%");

    Serial.print("  |  ");

    Serial.print("Temperatura: ");
    Serial.print(tempC);
    Serial.print("°C ~ ");
    Serial.print(tempF);
    Serial.print("°F ~ ");
    Serial.print(tempK);
    Serial.println("K");
    lcd.setCursor(0,1);
    lcd.print("Umidade: ");
    lcd.print(humi);
    lcd.print("%");

    lcd.setCursor(0,2);
    lcd.print("Temperatura: ");
    lcd.print(tempC);
    lcd.print("C");
  }
  delay(2000);

}