// 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>

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Set the LCD address to 0x27 for a 16 characters and 2-line display

#define DHTPIN 4     // Digital pin connected to the DHT sensor
// 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);

byte degs[8] = {
  0b01111,
  0b01001,
  0b01001,
  0b01111,
  0b00000,
  0b00000,
  0b00000,
  0b00000  
};

void setup() { 
  lcd.init();             // Initialize the LCD
  lcd.backlight();        // Make sure the backlight is turned on
  
  // Print a message on both lines of the LCD.
  lcd.setCursor(2, 0);    // Set the cursor to character 2 on line 0
  lcd.print("Good Morning");

  lcd.setCursor(2, 1);    // Set the cursor to character 2 on line 1
  lcd.print("DHT ESP32 LCD");
  delay(5000);
  lcd.clear();

  Serial.begin(115200);
  Serial.println(F("DHTxx test!"));

  dht.begin();
  lcd.createChar(0, degs);
}

void loop() {

  // 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();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }


  // Printing the results on the serial monitor
	Serial.print("Temperature = ");
	Serial.print(t);
	Serial.print(" ");
	Serial.print((char)176);//shows degrees character
	Serial.print("C | ");
	Serial.print((t * 9.0) / 5.0 + 32.0);//print the temperature in Fahrenheit
	Serial.print(" ");
	Serial.print((char)176);//shows degrees character
	Serial.println("F ");
	Serial.print("Humidity = ");
	Serial.print(h);
	Serial.println(" % ");
	Serial.println("");
 lcd.setCursor(0, 0);
 lcd.print("Temp: " + String(t));
 lcd.setCursor(11,0);
 lcd.write(0);
 lcd.setCursor(12,0);
 lcd.print("C");
 lcd.setCursor(0, 1);
 lcd.print("Humidity:" + String(h) + "%");




	delay(2000); // Delays 2 secods
}