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

#define SCREEN_WIDTH 128    // OLED display width
#define SCREEN_HEIGHT 64    // OLED display height
#define OLED_RESET     -1   // Reset pin number, -1 means Arduino reset pin
#define SCREEN_ADDRESS 0x3C // Address may be either 3C or 3d
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
   Serial.begin(9600);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
    
}
}
void loop() {
  display.clearDisplay();             // Clears display buffer
  display.setTextSize(1);             
  display.setTextColor(SSD1306_WHITE);       
  display.setCursor(0,0);             // Start printing at top-left corner
  display.println(F("Hello World!\3")); 
  display.display();                  //displays the text on screen
}