Hello ST Community,
I am working with the STM32N6570-DK and the USBX Ux_Device_Video example from
STM32Cube_FW_N6_V1.3.0\Projects\STM32N6570-DK\Applications\USBX\Ux_Device_Video.
I followed the README instructions exactly:
Built FSBL and Ux_Device_Video projects successfully in STM32CubeIDE
Generated FSBL.bin and Ux_Device_Video.bin
Signed both binaries using STM32_SigningTool_CLI
Programmed:
FSBL-trusted.bin at 0x70000000 (external flash)
Ux_Device_Video-trusted.bin at 0x70100000 (external flash)
Set BOOT0 and BOOT1 to boot from external flash and reset the board
However, the application does not run as expected. When the board is connected to a Windows PC, the Windows Camera application fails with the error:
Can't start your camera
0xA00F4241 <CameraSwitchFailed> (0xC00DABE7)
From my understanding, the Ux_Device_Video example should enumerate as a USB UVC camera and stream video to the Windows Camera app. Since the camera app fails, it seems the firmware may not be executing correctly on the STM32 side (FSBL → application handoff).
Could you please clarify:
1. What is the expected runtime behavior/output of the Ux_Device_Video example?
2. How can we confirm that FSBL and the application are actually running (LED/UART/logs)?
3. Are there any additional configuration or validation steps missing from the README for external-flash boot?
4. Our final requirement is to use USB UVC to stream live camera video from the STM32N6570-DK to another monitor/PC.
Could you please confirm what hardware (camera sensor, display path) and software configuration are required on the STM32 side to achieve live video streaming using this example?
Any guidance would be appreciated.
Thank you.
