HP Prime and Raspberry Pi?

[metawops]

(03-03-2020 08:02 AM)cyrille de brébisson Wrote:  So, yes, it is doable, BUT, should you decide to go forward with it (and I can provide you with information/documentation), it will be a non negligible amount of work...

Dear Cyrille,

that sounds promising. I'd really love to learn more about the Prime USB protocol.
However, I'm totally new to this field (USB communications). My naive approach would be: I send a certain sequence of bytes to the /dev/hpprime HID device ("please send a screenshot") and get a number of bytes in return (the PNG file). But is it that easy?
Also, could this be implemented in Python? It should, right? As long as we have a way in Python to send and retrieve data to /dev/hpprime (originally it's /dev/hidraw0).

Maybe we continue via DMs?

Thanks,
Stefan.