Hi,
a new STM32H5 based design (Azure RTOS) needs two USB host ports. We want to use a hub.
To give this a try I modified UX_Host_DualClass example from STM32H573I-DK /
STM32Cube_FW_H5_V1.1.0 to run on my NUCLEO-STM32H563ZI board.
I removed all the USBPD code and started the host stack manually. I installed the
USB_USER jumper AND STLK jumper to get a fixed VBUS output while
supplying the board via the ST-Link interface. That's probably not the
idea of the board, but it works for my test.
Now HID devices and mass storage devices are detected correctly and demo
works as expected.
Next I added hub class support to the demo via CubeMX.
Any hub is now correctly detected: I print its VID/PID.
But enummeration of any device behind the hub fails!
In ux_host_stack_transfer_request.c:
/* Send the command to the controller. */
status = hcd -> ux_hcd_entry_function(hcd, UX_HCD_TRANSFER_REQUEST, transfer_request);
fails with status = UX_TRANSFER_TIMEOUT (0x53)
when called from _ux_host_stack_device_address_set() with device_address=2.
What's the problem?
Can I expect the hub class to work on STM32?
Do you have any hub class example running on STM32H5 (or similiar) as
reference?
Regards,
Matthias
