Board disconnected

[Repka123_]

I am trying to create a BLDC Controller project based on VESC using the STM32F405RGT6 microcontroller. I have successfully flashed the bootloader and uploaded the firmware using STLink. However, when I connect the IC to my laptop via USB, the IC is detected and can run the firmware only for a few moments (around 2 minutes) before disconnecting. What could be the issue?

[Tesla DeLorean]

Pulling too much power or reseting. Perhaps scope supply vs NRST

[liaifat85]

Check the output of the  AMS1117-3.3 voltage regulator. If the regulator overheats or becomes unstable, the microcontroller could reset or disconnect.

[PGump.1]

Hi,

There are 1002 possible reasons why this is happening -

1. bad hardware
   ...

     1002. memory leak.

I hope this helps.

Kind regards
Pedro

[gbm]

Ordinary lockup of USB stack due to calling transmit routine from the main loop?... Just wild guess, not really enough info for a reasonable answer.