#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "DHTesp.h"

const int NTC_PIN = 14;
const int DHT_PIN = 15;


// Konfigurasi sensor NTC
const int NTC_REFERENCE_RESISTANCE = 10000; // Resistansi NTC pada suhu referensi (misalnya 25°C)
const int NTC_REFERENCE_TEMPERATURE = 25;   // Suhu referensi dalam Celsius
const int NTC_SERIES_RESISTOR = 10000; // Nilai resistor seri NTC
const int BETA = 3950; 
  
Adafruit_SSD1306 display(128, 64, &Wire, -1);

DHTesp dhtSensor;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

   display.begin(SSD1306_SWITCHCAPVCC, 0x3C);

}

void loop() {
  
 TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  int analogValue = analogRead(NTC_PIN);
  float resistance = NTC_SERIES_RESISTOR / (4095.0 / analogValue - 1.0);
  float tempK = 1.0 / (1.0 / (NTC_REFERENCE_TEMPERATURE + 273.15) + log(resistance / NTC_REFERENCE_RESISTANCE) / BETA);
  float tempC = tempK - 273.15;

  //float ntcTemperature = celcius(); // untuk membaca suhu NTC
  Serial.println("Temp DHT: " + String(data.temperature, 1) + "°C");
  Serial.println("Humidity DHT: " + String(data.humidity, 1) + "%");
  Serial.println("Temp NTC: " + String(tempC) + "°C");
  //Serial.println("Humidity NTC: " + steinhart + "C");
  Serial.println("---");

  display.clearDisplay();
  display.setTextSize(1);             
  display.setTextColor(WHITE);        
  display.setCursor(0,0);             
  display.println("Humidity DHT   : ");
  display.setCursor(50,10);
  display.println(String(data.humidity) + "%");
  display.setCursor(0,20);             
  display.println("Temperature DHT: "); 
  display.setCursor(50,30);
  display.println(String(data.temperature) + "C");
  display.setCursor(0,40);             
  display.println("Temperature NTC: ");
  display.println(String(tempC) + "C");
  display.display();
  delay(2000);
}