#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN , DHTTYPE);


#define OLED_ADDR   0x3C      // I2C address of the OLED display
#define SCREEN_WIDTH 128     // OLED display width, in pixels
#define SCREEN_HEIGHT 64     // OLED display height, in pixels

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(115200);
  dht.begin();
  // Initialize the OLED display
  display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR);
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setTextSize(2);
  display.setCursor(10, 20);
  display.println("Hello,");
  display.setCursor(30, 50);
  display.println("World!");
  display.display();
}

void loop() {
  delay(2000);
float h =dht.readHumidity();
float t = dht.readTemperature();
if(isnan(h)||isnan(t)){
  display.clearDisplay();
  
  display.setCursor(0,0);
  display.println("!!FAIL!!");
  display.display();
  Serial.println("Failed to read from sensor!!!");
  return;
} 
Serial.print("Temperature: ");
Serial.println(t);
Serial.print("Humidity: ");
Serial.println(h);
  display.clearDisplay();
  display.setCursor(0,0);
  display.println("Hum:");
  display.setCursor(30,50);
  display.println(h);
  display.display();
}