This is a port of the Sparkfun MPU-9250 library. The original code was stated to work only on SAMD platform, that is not correct - there is no platform specific code in the library - it should work on ...

Used stm32f401ccu6 BlackPill board from WeAct.. I also reduced the pull-up resistors from 10 kΩ to 4.7 kΩ. Looking ahead, I will say that this did not change anything in the work. About I2C connection ...