I'm creating a new USB device with a custom USB class on an STM32F779NIH.  We have previously developed a fully operational device doing the same thing with USB full speed, now we're trying to do the same with USB highspeed using an external ULPI. I'...

Steps to reproduce:Create a new project with an STM32F779NIH processorEnable USB OTG highspeed (device only)Add USB_Device middleware (select any class)Generate the project codeInside the USB_DEVICE/App/usbd_desc.c file, the GetSerialNum(void) functi...