#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH   128
#define SCREEN_HEIGHT  64
#define SCREEN_ADDRESS 0x3C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  oled.setRotation(0);          // text size
  oled.setTextSize(1);          // text size
  oled.setTextColor(WHITE);     // text color
  oled.setCursor(0, 10);        // position to display
  oled.clearDisplay(); // clear display
  // oled.println("Hello World!"); // text to display
  // oled.drawLine(23, 0, 34, 0, 1);
  oled.display();               // show on OLED
}

void loop() {
  for (int i = 0; i < SCREEN_WIDTH; i++) {
    oled.drawLine(128 - i, 0, 128 - i, SCREEN_HEIGHT - 1, 1);
    oled.display();
    oled.drawLine(128 - i, 0, 128 - i, SCREEN_HEIGHT - 1, 0);
    delay(10);
  }
}