   display.clearDisplay();
   display.drawBitmap(30, 16,  logo16_glcd_bmp, 16, 16, 1);
   display.display();
+  delay(1);
 
   // invert the display
   display.invertDisplay(true);

    if (color == WHITE) color = BLACK;
    else color = WHITE;
    display.display();
  }
}


                     display.width()/2-i, display.height()/2+i,
                     display.width()/2+i, display.height()/2+i, WHITE);
    display.display();
    delay(1);
  }
}

