Awesome, another STM32 NodeManager user! I've worked on getting a node up on the HiTiny board with several sensors to monitor temperature and humidity in a few rooms while working out some additional hardware configurations to add more sensors to several STM32 boards, both the HyTinys and the Bluepills.
I'll be interested in hearing more about your adventures! BTW, if your board only has one SPI interface there was a bug in the Arduino_STM32code that would cause the board to crash whenever it tried to synch the clock so be sure to grab the latest of Rodger's code as he just merged in the fix a few weeks ago.
Mitch