#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

#include "DHT.h"

#define DHTPIN 27 
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

#define btnPin 15

bool btn_o = 0;//ค่าปุ่มกดเริ่มต้น

void setup()
{
//  lcd.init();
//  lcd.backlight();
//  lcd.setCursor(0, 0);
//  lcd.print("LCD1602 I2c Test");
//  lcd.setCursor(2, 1);
//  lcd.print("Smart Farm");
//  delay(4000);
//  lcd.clear();

Serial.begin(9600);
pinMode(btnPin, INPUT);

lcd.init();
lcd.backlight()

dht.begin();

}

void loop() {

 delay(50);

  bool btn = digitalRead(btnPin);

  if((btn == 1) && (btn_o == 0)){
    btn_o = 1;

    float h = dht.readHumidity();
    float t = dht.readTemperature();
    float f = dht.readTemperature(true);

    if (isnan(h) || isnan(t) || isnan(f)) {
      Serial.println(F("Failed to read from DHT sensor!"));
      return;
    }

    float hif = dht.computeHeatIndex(f, h);
    float hic = dht.computeHeatIndex(t, h, false);

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp :");
    lcd.setCursor(7, 0);
    lcd.print(t);
    lcd.setCursor(13, 0);
    lcd.print("C");
    lcd.setCursor(0, 1);
    lcd.print("Humi :");
    lcd.setCursor(7, 1);
    lcd.print(h);
    lcd.setCursor(13, 1);
    lcd.print("%");

  }else{
    btn_o = btn;
    // เท็จ
  }// this speeds up the simulation
//  lcd.setCursor(0, 0);
//  lcd.print("LCD1602 I2c Test");//พิมพ์ข้อความ "LCD1602 I2c Test"
//  lcd.setCursor(2, 1);
//  lcd.print("Smart Farm");// พิมพ์ข้อความ"Smart Farm"
//  delay(4000);
//  lcd.clear();
// delay(4000);
// float h = dht.readHumidity();
// float t = dht.readTemperature();
// float f = dht.readTemperature(true);

//  if (isnan(h) || isnan(t) || isnan(f)) {
//     Serial.println(F("Failed to read from DHT sensor!"));
//     return;}

//  float hif = dht.computeHeatIndex(f, h);
//  float hic = dht.computeHeatIndex(t, h, false);

// Serial.print(F("Humidity: "));
//   Serial.print(h);
//   Serial.print(F("%  Temperature: "));
//   Serial.print(t);
//   Serial.print(F("°C "));
//   Serial.print(f);
//   Serial.print(F("°F  Heat index: "));
//   Serial.print(hic);
//   Serial.print(F("°C "));
//   Serial.print(hif);
//   Serial.println(F("°F"));
}