STM32_USB_OTG_Driver in newer designs

[jcbless-ga]

Hello all -

I am attempting to upgrade an old design from an STM32f4 device to an STM32h753 device.  The old design used the STM32_USB_OTG_Driver.  It seems to appear that the OTG driver no longer exists for the STM32h753.  Any ideas about how to upgrade the code to use the new processor with this driver issue in mind?

Thanks,
John

[Grant Bt]

Is that from the Std Peripheral Library days? (Sorry, I'm having a hard time following all the history.)  This *might* be of help?

https://community.st.com/t5/stm32-mcus/how-to-use-stmicroelectronics-classic-usb-device-middleware-with/ta-p/599274/highlight/true/show-comments/true

It might be a smaller leap than going full HAL.

[jcbless-ga]

I didn't develop the original code so there's certain aspects of it I am uncertain of, so I am uncertain if it is from the Std Peripheral Library period of time.  That example there doesn't seem to address OTG at all, so that's one aspect I am rather uncertain of.  I'll see if I can glean anything from the example.