Inconsistent Driver Errors on STM32F0

[JMattChiam]

Operating System

Windows 10

Board

STM32F072 Custom Board

Firmware

STM32CubeIDE configured following #633 with tusb_config.h to use RHPORT 0 and USB Full Speed instead of High speed.

Main firmware:
examples/device/midi_test
usb_descriptors.c identical to example, other than changing product name.

What happened ?

I'm new to USB and trying to get my custom STM32F072 MIDI controller recognized by windows. I've followed the steps outlined in #633 for my needs and the project builds and uploads fine onto the board.
Windows seems to have a hard time with the controller. Sometimes it connects fine and receives the MIDI messages, other times I get driver errors. Infuriatingly, there seems to be a few different behaviors (as shown on USB devices):

• USB Composite device (Working correctly)
• USB Composite device (driver error)
• Actual device name (Working correctly)
• Actual device name (driver error)
• Unknown USB device (Device descriptor request failed)

I've found that for the ones with "driver error", it is encountering error 10 ("This device cannot start").
I've attached three wireshark logs if it helps (one for working correctly, one driver error, and one detected as USB composite device and not working). It seems that the one that works correctly includes a SET_INTERFACE request and response, which is missing from both not working ones.

Wireshark captures.zip
Start Line numbers:
Correct name, driver error: 67
Correct name, working: 63
USB composite device, driver error: 83

Additionally, uninstalling the device on device manager, then clicking "scan for hardware changes" sometimes fixes the issue.

How to reproduce ?

NA

Debug Log as txt file (LOG/CFG_TUSB_DEBUG=2)

NA

Screenshots

No response

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.