#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
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C // Address 0x3D for 128x64
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
void setup() {
  Serial.begin(115200);
if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  display.clearDisplay();               // Clear display buffer
  display.setTextSize(1.5);             // Set text size
  display.setTextColor(WHITE);          // Set text color
  display.setCursor(5, 5);              // Define position
  display.println("Hello, world!");     // Display static text
  display.setCursor(5, 18);      
  display.println("Good bye!");  
  display.drawRect(0, 0, 90, 30, WHITE);// Draw rectangle
  display.display();                    // Display the text and shape on the screen
}
void loop() {
  
}