Resolved! Problem with USB OTG in host mode, no HOST_USER_CLASS_ACTIVE.
I configured USB_OTG_FS on STM32H745I-DISCO board using STM32CubeIDE.Here are my settings:My `MX_USB_HOST_Init()` function is called in `DefaultTask`.It completes without errors.`USBH_UserProcess()` is called whenever a USB disk is inserted to the po...