   for (int16_t i=0; i<display.height()/2-2; i+=2) {
     display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, WHITE);
     display.display();
+    delay(1);
   }
 }
 

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


      display.println();
  }    
  display.display();
  delay(1);
}

void testdrawcircle(void) {
  for (int16_t i=0; i<display.height(); i+=2) {
    display.drawCircle(display.width()/2, display.height()/2, i, WHITE);
    display.display();
    delay(1);
  }
}

