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Is VUSB required/recommended for self-powered STM32 USB device?

Question asked by MWP on Aug 8, 2016
Latest reply on Aug 10, 2016 by Baxsie
Hi all,

Is the VUSB input required/recommended for self-powered STM32 USB device?
From everything ive read, the VUSB input is required for connection/disconnect detection, but in practice, everything seems to work just fine without it.
I've looked through the ST USB device library, and while there is a switch for VUSB/SELF_POWERED device support, it seems to nothing whatsoever (the switch/var is never checked by any of the ST USB device library code).

So... am i safe to just not use the VUSB input?
That pin is rather valuable and could be used elsewhere.

Thanks in advance!

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