Don't use on 3-color display

[recordfactory]

It will write non-matching values into the non-volatile storage area of the display and render it useless.
If you've already done it and got a display which seems to be bricked or showing just garbage:
Add static uint8_t defaults[2] ={0x00, 0x8e}; to EPDspi.c .
In set registers add EPD_Write(defaults, sizeof(defaults)); and comment all other settings out.
Save.
In Terminal make all && make flash
Display works properly again.

[martinberlin]

Hi Recordfactory,
I started some months ago a component to drive epapers on ESP-IDF 4:
https://github.com/martinberlin/cale-idf

The component has classes supporting many displays and there are also some color ones, including 4.2, 5.83 and 7.5 inches. Just let me know if you need a class and start a new issue there if you want mentioning the epaper model.