USB High-Speed UVC not working on NUCLEO-U5A5ZJ-Q (TinyUSB, device not enumerating / no video stream)

[paolopepe00]

Hi,
I’m trying to use the NUCLEO-U5A5ZJ-Q with TinyUSB in USB High-Speed (HS) mode as a UVC device, but the board is not behaving as expected.

Problem

The device is not properly recognized as a UVC streaming device.
There is no video stream output, and it looks like the board is not transmitting anything over USB.

The enumeration may complete (or partially complete), but the UVC streaming endpoint does not seem to start working.

What I configured

In STM32CubeMX (MX):

• USB OTG configured in Device Only mode
• Internal High-Speed PHY enabled
• USB set for High-Speed operation
  Clock configuration:
• I’m not fully sure if the clock tree is correct for HS USB operation, so this might be part of the issue.
  What I suspect

Possible causes I’m considering:

• Incorrect clock configuration for USB HS (48 MHz / PLL settings?)
• Missing or incorrect configuration of the internal HS PHY
• CubeMX not generating some required USB HS settings correctly for TinyUSB
• Missing TinyUSB configuration for HS UVC mode on this STM32 series
• Board-specific limitation or additional setup required for UVC streaming on HS
• What I need help with

Has anyone successfully run TinyUSB UVC over High-Speed on STM32U5 (NUCLEO-U5A5ZJ-Q)?

I would like to know:

• Required CubeMX settings (especially USB + clock tree)
• Any special requirements for enabling HS PHY in Device mode
• Whether additional TinyUSB configuration is needed for UVC HS
• If there are known limitations with this MCU / board for UVC streaming

This is my current tusb_config.h / project setup:

#define CFG_TUSB_MCU          OPT_MCU_STM32U5
#define CFG_TUSB_RHPORT0_MODE (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
#define CFG_TUSB_OS           OPT_OS_NONE
#define CFG_TUSB_DEBUG        0
#define CFG_TUD_ENABLED       1
#define CFG_TUD_ENDPOINT0_SIZE    64
#define CFG_TUD_CDC              0
#define CFG_TUD_MSC              0
#define CFG_TUD_HID              0
#define CFG_TUD_MIDI             0
#define CFG_TUD_VENDOR           0
#define CFG_TUD_VIDEO            1
#define CFG_TUD_VIDEO_STREAMING  1
#define CFG_TUD_VIDEO_STREAMING_EP_BUFSIZE  3072
#define CFG_TUD_VIDEO_STREAMING_BULK        0

I will attach screenshots of clock configuration:

[HiFiPhile]

Please refer to getting started doc to build example, you don't need CubeMX, the whole BSP is included here:
https://github.com/hathach/tinyusb/blob/master/hw/bsp/stm32u5/boards/stm32u5a5nucleo/board.h
https://github.com/hathach/tinyusb/blob/master/hw/bsp/stm32u5/family.c

[paolopepe00]

Thanks for the reply.

I managed to get it working on the NUCLEO-U5A5ZJ-Q, so the issue now seems related to the fact that I’m using a custom board based on STM32U595AIHxQ, for which there is no existing BSP.