Skip to main content
T J
Senior III
May 21, 2019
Solved

STM32H743 USB ports are not recognized by windows

  • May 21, 2019
  • 2 replies
  • 746 views

both ports set to CDC using internal PHY

Heap set to 0x2000

VBus sensing not utilized, but that should only affect 1 port, not both.

using Cube_MX on this new project.

Is there example code for H7 using USB ?

This topic has been closed for replies.
Best answer by T J

Fixed it, the Crystal wasn't running, re-flowed and fixed.

Now Windows recognizes both ports without the use of VBus sensing.

2 replies

T J
T JAuthorBest answer
Senior III
May 22, 2019

Fixed it, the Crystal wasn't running, re-flowed and fixed.

Now Windows recognizes both ports without the use of VBus sensing.

T J
T JAuthor
Senior III
May 22, 2019

Interesting how without a crystal, it doesn't work with the internal RC48 oscillator