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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define SCREEN_ADDRESS 0x3C
Adafruit_SSD1306 display (SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
int j = 1;

void setup () {
  display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
  display.clearDisplay();
  display.setTextSize(1);
}

void loop() {
  j = !j;
  for (int i = 0; i < SCREEN_HEIGHT; i += 2) {
    display.setTextColor(WHITE);
    if (j)
      display.setCursor(0, i); // scroll UP
    else
      display.setCursor(0, SCREEN_HEIGHT - i); // scroll DOWN
    display.println(F("Twas brillig, and theslithy toves Did gyre\nand gimble in th wabe\nAll mimsy were the\nborogoves, And the\nmome raths outgrabe."));
    display.display();
    display.clearDisplay();
  }
}