/* Hello Wokwi! */

#include <LiquidCrystal_I2C.h>
#include "DHT.h"
#include <EEPROM.h>

#define DHTPIN 2  
#define HEATER 3
#define HUMIDIFIER 4
#define FAN1 5
#define FAN2 6
#define LIGHT 7

#define DIFF 0.1 

#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 20, 4);
byte coolerIcon[] = {  B00000,  B10011,  B11010,  B00100,  B01011,  B11001,  B00000,  B00000};
byte termIcon[8]={B00100, B01010, B01010, B01110, B01110, B11111, B11111, B01110}; //icon for termometer
byte dropIcon[8]={B00100, B00100, B01010, B01010, B10001, B10001, B10001, B01110};//icon for water droplet
byte customChar[] = {  B01100,  B11000,  B11001,  B11111,  B11110,  B00000,  B00000,  B00000};
byte Char2[] = {
  B00000,
  B00000,
  B00000,
  B00000,
  B00001,
  B00111,
  B01010,
  B01100
};
byte heaterChar[] = { B00110,
  B01001,
  B10101,
  B10101,
  B10101,
  B10110,
  B10000,
  B00000};

void setup() {
  pinMode(HEATER, OUTPUT);
  pinMode(HUMIDIFIER, OUTPUT);
  pinMode(FAN1, OUTPUT);
  pinMode(FAN2, OUTPUT);
  pinMode(LIGHT, OUTPUT);

  lcd.init();
  lcd.createChar(0, coolerIcon);
  lcd.createChar(1, termIcon);
  lcd.createChar(2, dropIcon);
  lcd.createChar(4, Char2);
  lcd.createChar(5, customChar);
  lcd.createChar(6, heaterChar);
  lcd.backlight();
  lcd.setCursor(1, 0);
  dht.begin();
  
}

byte heating = 0;
byte cooling = 0;
float setTemp = 37.8;
float setHum = 60;

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
    lcd.setCursor(0, 0);
    lcd.print(F("DHT sensor error"));
    return;
  }

  //lcd.print(F("Humidity: "));
  //lcd.print(humidity);
  //lcd.print(F("%  Temperature: "));
  lcd.setCursor(0, 0);
  lcd.print(char(1));
  lcd.print(temperature,1);
  lcd.print((char)223);
  lcd.print(' ');
  lcd.setCursor(8, 0);
  lcd.print(char(2));
  lcd.print(humidity,0);
  lcd.print("% ");

  lcd.setCursor(1,1);
  lcd.print(char(4));
  lcd.print(char(5));
  lcd.print(char(0));
  lcd.print(millis()/1000);

  {

  if (temperature <= setTemp - DIFF){  // właczenie sie przkaznika gdy temp otoczenia jest mniejsza od minmalnej temp oraz mniejsza od maksymalnej
    digitalWrite(HEATER, LOW);
  } 
  else if (temperature >= setTemp + DIFF){    // wylączenie sie przekaznika gdy jest rowna lub wieksza maksymalnej
    digitalWrite(HEATER, HIGH);
  }
}

  delay(999);
}