#include <DHT.h>
#define DHT_PINO_DO_SENSOR 21
#define DHT_TIPO_DE_SENSOR DHT22

#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#define SDA 15
#define SCL 16
LiquidCrystal_I2C lcd(0x27,20,4);
int dataPin = 12;
int latchPin = 13;
int clockPin = 14;


DHT dht_sensor (DHT_PINO_DO_SENSOR, DHT_TIPO_DE_SENSOR);

void setup() {
  Serial.begin(9600);
  dht_sensor.begin();
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  Wire.begin(SDA,SCL);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Termo Higrometro");
  lcd.setCursor(1,1);
  lcd.print("Umidade: 40.00%");
  lcd.setCursor(0,2);
  lcd.print("Temperatura: 24.00C");
  lcd.setCursor(6,3);
  lcd.print("RAFAEL");
}

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 do sensor DHT!");
    } else {
    Serial.print("Umidade relativa do ar: ");
    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");
    }
    delay(2000);
}