Arduino for STM32

Thanks for your reply, well, I completely missed this docs

ADDITIONAL INFO: the mpu6050 was tested on arduino nano, and worked just fine, basic code with printing out text or blinking was executed by mentioned board (the title is kinda wrong, blackpill is not the STMF4..., but you know what do I mean).

I have flashed a simple code on my blackpill (code below) and then connected my mpu6050 to it by plugging VCC => 3.3V, GND=>GND, SCL => PB6 and SDA => PB7. I've also plugged pullup resistors (tried with 4.7k ohm and 10k ohm) from VCC (on mpu6050) to PB6 and separately to PB7. At the end I have also ...