There used to be documents called "Application Notes" or app notes on the st site. They were always very hard to find but they were there and now I can't find them.

[jdowdster]

Specifically I'm looking for any app notes on using the USB s/w HAL and drivers on a STM32F7 based processor.

[berendi]

The document you are looking for is a User Manual, not an Application Note. Don't ask me why.

Google for stm32 usb library user manual

https://www.st.com/en/microcontrollers-microprocessors/stm32f7-series.html#resource

[jdowdster]

Thanks Mikhail,, that's exactly what I was looking for.

Happy New Year.

Cheers!!