SSD1306 how to scroll big bitmap

Other Hardware Displays
1

Hi,

I'm using 64x48 SSD1306 display and I'm trying to scroll 99x14pix bitmap
I've managed to do it, but I can only see 48pixel repeating itself
So I can see 1...48th pix and then again 1...48th pixel instead of 1.....99th pixel

I'm using a very simple code:
{
display.drawBitmap(0, 40, hold_kor, 99, 14, WHITE);
display.display();
display.startscrolldiagleft(15,15);
delay(8000);
display.stopscroll();
}

Is it some kind of buffer limitation?
My screen is rotated (I'm using it in vertical orientation)

2

Most likely the problem is in the limitations of the function startscrolldiagleft)
Look to the source code

3

I think this will only scroll the pixels on the screen.

Try re-drawing the image starting off the left side of the screen:

  for (int x=0; x<99; x++)
  {
    display.drawBitmap(-x, 40, hold_kor, 99, 14, WHITE);
    display.display();
  }
4

Hi John,

thank you for your help! It is promising, the problem is the bitmap is drawing itself too quick, on top of each other?? Or I have to clean the display each time before new draw?
GIF-2022-11-28-09-18-11

5

Yes, it worked, you have to add

display.clearDisplay();

To clean the screen before each draw, so essentially:

 for (int x=0; x<99; x++)
  {
    display.clearDisplay();
    display.drawBitmap(-x, 40, hold_kor, 99, 14, WHITE);
    display.display();
  }

Thank you John!!