Custom driver

[newegor]

Hi,

I have a display which is connected to MCU using SPI interface. This display uses 1 bit per pixel format. Due to display uses fluorescent technology I need to update it always. As I see frame buffer driver can't support 1 bit per pixel format.

What is the simple way to implement this driver? May be I can take frame buffer driver and add a conversion from gray scale(8 bit per pixel) to 1 bit per pixel. Or I need to write my own driver.

Could you suggest something to me?

Thank you.

[inmarket]

The framebuffer driver is not the best one to model it from.

Monochrome drivers don't fit into the framebuffer model because there is more than one pixel packed into a byte. To add that capability to the framebuffer would needlessly complicate the code.

Instead try using the PCD8544 driver as a base.

It also is a monochrome driver running over SPI.

[Joel Bodenmann]

We are very curious, could you please tell us more about your display, it's purpose and probably show us a picture? We've never heard of such a display before.

~ Tectu