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CDC ECM on STM32U385RG

wmcgsandc
Visitor

‎2025-08-28 2:51 PM

I would like to use USBX to make a CDC ECM USB device, but in STM32CubeMX, there is no option for CDC ECM or RNDIS in the USBX device class menu:

wmcgsandc_0-1756417297150.png

The STM32U545RE on the other hand has options for CDC ECM and RNDIS: 

wmcgsandc_1-1756417504807.png

Does STM32U385 support CDC ECM and RNDIS with USBX? If yes, is there something I need to do in order to show CDC ECM as an option in STM32CubeMX?

Thanks!

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