A look at CrossPoint e-reader firmware

I confess, I was kind of hoping for a technical review of the firmware, the code. This is a perfectly cromulent xteink crosspoint review from a consumer perspective, but I feel like there's already a bunch of those, all over. It would have been sick to have a mini Architectures of Open Source (https://aosabook.org/en/) book type thing, that dives into the structure and systems of the code, how it work together to be CrossPoint.