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T J
Senior III
May 21, 2019 11:50 PM UTC
Solved

STM32H743 USB ports are not recognized by windows

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.
T J
T JBest answer
Senior III
May 22, 2019 12:10 AM UTC

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 12:10 AM UTC

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 12:23 AM UTC

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