#include <DHT.h>
#define DHT_SENSOR_PIN  23 // ESP32 pin GPIO23 connected to DHT11 sensor
#define DHT_SENSOR_TYPE DHT22
DHT dht_sensor(DHT_SENSOR_PIN, DHT_SENSOR_TYPE);

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_RESET -1 
Adafruit_SSD1306 display(128 , 64);
int var = 0;

void setup() {
  dht_sensor.begin(); // initialize the DHT sensor
  display.begin(SSD1306_SWITCHCAPVCC, 0x3c); //initialize I2C addr 0x3c
  display.clearDisplay(); // clears the screen and buffer
  display.drawPixel(127, 63, WHITE);
  display.display();
 
}

void loop() {
  
  float humi  = dht_sensor.readHumidity();    // read humidity
  float tempC = dht_sensor.readTemperature(); // read temperature
  

  
  
  if (isnan(tempC) || isnan(humi)) {
    display.setCursor(0, 0);
    display.print("Failed");
  } else {
    display.setCursor(0, 0); 
    display.print("Temp: ");
    display.print(tempC);     
    display.print("°C");

    display.setCursor(0, 1);  
    display.print("Humi: ");
    display.print(humi);      
    display.print("%");
  }

  
  display.display(); 
  
  delay(50);
}