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

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello World");

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(500);
  display.clearDisplay();

  display.setTextSize(2);
  display.setTextColor(WHITE);
}

void loop() {
  display.clearDisplay();
  display.setCursor(0, 0);
  display.print("Hello World");
  
  display.display(); 
}