// Access the EPD2X9 display
EPaperDisplay display;
EPaperDisplay.DeviceType epd2x9 = EPaperDisplay.DeviceType.Preset.EPD2X9.deviceType;
display = EPaperDisplay.Factory.create(SPI_NAME, BUSY_GPIO, RESET_GPIO, DC_GPIO, epd2x9);

// Clear screen
display.clear();

// Set pixels
byte[] rawPixels = SampleData.WAVESHARE_LOGO;
display.setPixels(rawPixels);

// Set a bitmap
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.android);
byte[] bmpPixels = BitmapHelper.bmpToBytes(bmp);
display.setPixels(bmpPixels);

// Refresh the screen
display.refresh();

// Close the display when finished
display.close();