Stepmotor Driver Module 13.2 v1.1 (HR8825 / M039-V11) with Arduino - looking for documentation / examples

I just bought a Stepmotor Driver Module and tried to run the example program that is linked in the documentation. So far no luck... the example seems to be designed for the old version (M039 and not M039 V11). I assume they are more or less compatible. The I2C address seems t be the same, but there is no documentation on how things work.

Does anyone have a working example and is willing to share it? I checked the community forum and others seem to have the same issue (I tried posting there, but I got a new account and my posts need to be approved) [edit]They were approved in the mean time[/edit]

Apparently, the UIFlow example is working (https://community.m5stack.com/topic/6601/issues-with-stepmotor-driver-module-v1-1-hr8825-using-m5stack)

Is the source of the module somewhere available? I would like to study the micropython code, so I can get the CPP-stuff to work :)