stm32u5 ux host hid with no vbus power

[tommyliu]

Hi,

I try to migrate the  UX_Host_HID example on STM32U575I-EV to nucleo-u575zi-q.

STM32CubeIDE Version: 1.17.0

STM32CubeMX Version: 6.13.0

I duplicate all the settings relating to USB host options to mine.

In the middleware:

and then copy the source code from the Ux_Host_HID

After programming the firmware to my ev board, i plug the hid device to the CN15 USB connector. There is noting happened and no power react on my hid device.

Did i miss any settings to setup the USB host example??

how can i provide power to the hid device???

Any response will be appreciated.

[FBL · Accepted solution]

Hi @tommyliu 

It is an expected behavior. VBUS should be powered by the USB Host and the Nucleo-144 U575 board works as a USB Device. However, the eval board can work as usb host or device. Refer to section 7.13.1 Description in UM2854 and section 6.11 USB Type-C® FS/HS in UM2861 for more details.