If you want to join the efforts please put this repository under your Radar:

https://github.com/martinberlin/cale-idf

It will take time since I started beginning of 2020 really focusing my efforts to learn IDF, submodules, C++ classes "in deep" and more concepts.

It's exciting and a challenging build since there is not such a thing as GxEPD multi epaper class for ESP-IDF or at least I didn't found it and is a good oportunity to create something that can be not only used in the CALE project but also added as a component in any epaper Firmware.