// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

// REQUIRES the following Arduino libraries:
// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor

#include "DHT.h"

#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUNAS 20
#define LCD_LINHAS   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUNAS, LCD_LINHAS);

#define DHTPIN 2     // Digital pin connected to the DHT sensor
// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 --
// Pin 15 can work but DHT must be disconnected during program upload.

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11   // DHT 11
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor.
// Note that older versions of this library took an optional third parameter to
// tweak the timings for faster processors.  This parameter is no longer needed
// as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // Init
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  Serial.println(F("Teste DHTxx!"));

  dht.begin();
  
  pinMode(11, OUTPUT); // LED azul
  pinMode(12, OUTPUT); // LED verde
  pinMode(13, OUTPUT); // LED vermelho
}

void loop() {
  // Wait a few seconds between measurements.
  delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t)) {
    Serial.println(F("Falha da leitura do sensor DHT!"));
    return;
  }

  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);
  if (h < 20) {
    digitalWrite(11,LOW);
    digitalWrite(12,LOW);
    digitalWrite(13,HIGH);
  } else if (h < 60) {
    digitalWrite(11,LOW);
    digitalWrite(12,HIGH);
    digitalWrite(13,LOW);
  } else {
    digitalWrite(11,LOW);
    digitalWrite(12,HIGH);
    digitalWrite(13,HIGH);
  }

  Serial.print(F("\nUmidade: "));
  lcd.setCursor(0,0);
  lcd.print("Umidade ");
  Serial.print(h);
  lcd.setCursor(13,0);
  lcd.print(h);
  lcd.setCursor(19,0);
  lcd.print("%");
  Serial.print(F("% \nTemperatura: "));
  lcd.setCursor(0,1);
  lcd.print("Temperatura");
  Serial.print(t);
  if (t>0){ // Recurso para manter o espaçamento caso a temperatura caia para abaixo de zero e suba novamente
    lcd.setCursor(12,1); 
    lcd.print(" ");
    lcd.setCursor(13,1);
    lcd.print(t);
  } else{
    lcd.setCursor(12,1);
    lcd.print(t);
  }
  lcd.setCursor(19,1);
  lcd.print("C");
  Serial.print(F("°C \nSensação Térmica: "));
  lcd.setCursor(0,2);
  lcd.print("Sensacao Termica");
  Serial.print(hic);
   if (hic>0){ // Recurso para manter o espaçamento caso a temperatura caia para abaixo de zero e suba novamente
    lcd.setCursor(12,3); 
    lcd.print(" ");
    lcd.setCursor(13,3);
    lcd.print(hic);
  } else{
    lcd.setCursor(12,3);
    lcd.print(hic);
  } lcd.setCursor(19,3);
  lcd.print("C");  
  Serial.print(F("°C "));
}