I obtained that display lately but i am not satisfied about the way it is updated with all this flickering
taking 15 seconds. I found that it is delibaretale done in the inky library:
under it I can find that display is driven with SPI commands, but neither the commands nor what
the display is, is documented anywhere. Can i found this information somewhere. I am interested
is it possibly to just update parts of the display at time.
Line 120 is not relevant, it’s marked ignore because it serves no purpose in the hardware (presumably it’s reserved for future 4-colour displays), and is not related at all to the display flicker.
The flickering is deliberate and intended to control image retention, since image quality otherwise very quickly degrades. It’s moving physical ink particles in a fluid suspension, and these steps bring the ink back into a - more or less - clean state ready for the next image to be displayed.