STM32L4 CDC not working under Windows 10.

Have implemented Virtual Comm port on STM32L4. Works fine under Linux but Windows 10 shows Device Descriptor Request Failed.

Suggestions please.

Thanks

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Best answer by Jeff Tenney

Have you seen this?

Associate

After upping the system frequency to 32MHz now works fine under Linux and Windows.

Can anyone explain?

Senior

Have you seen this?

Associate

You star!

Thanks for thank - would explain why a frequency increase worked. Still not sure why Linux liked it and not Windows, but then that's Windows for you!

Phil

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