#include "DHT.h"
#include "LiquidCrystal.h"
#include "Button.h"

#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal lcd(13,12,11,10,9,8);
Button b_minus(7);
Button b_plus(6);
int t=20;
void setup() {
  pinMode(4, OUTPUT);
  pinMode(3, OUTPUT);
  digitalWrite(4, 0);
  digitalWrite(3, 0);
  lcd.begin(16,2);

  dht.begin();
  lcd.clear();
  b_minus.begin();
  b_plus.begin();
}

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

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



  lcd.setCursor(0,0);
  lcd.print("Curr T = ");
  lcd.print(temperature);
  lcd.print(" C");


  lcd.setCursor(0,1);
  lcd.print("Temp = ");
  lcd.print(t);
  lcd.print(" C");
  // Wait a few seconds between measurements.
  delay(50);

  if (b_minus.pressed()) t--;
  if (b_plus.pressed()) t++;


  if (temperature<t-1) {
    digitalWrite(4,1);
    digitalWrite(3,0);
  };

    if (temperature>t+1) {
    digitalWrite(4,0);
    digitalWrite(3,1);
  };

    if ((temperature<=t+1)&&(temperature>=t-1)) {
    digitalWrite(4,0);
    digitalWrite(3,0);
  };


}