NUCLEO F722ZE CubeMX CDC USB not enumerating ? Try this ...

[ThiZi]

Hi,

I just want to give a short workaround for an issue i had with the NUCLEO F722ZE board.

The CUBE-MX project (NUCLEO F722ZE selected - no custom build) does not work out of the box for CDC devices. In order to fix it i changed the default CUBE-MX project:

[CLOCK Configuration]

• input frequency (HSE) = 8 MHz (25 MHz oscilator (X3) is not mounted )

[Pinout ]

• in RCC Bypass clock source

In the source code i changed the usb descriptor (usbd_desc.c)

• bDeviceSubClass from 0x2 to 0x0

kind regards

[Tesla DeLorean]

Bumping off my feed

[HE1]

Hi

My workaround is connecting HSI RC instead (in STM32CubeMX' Clock Configuration) then try to resolve the conflicts manually, Ignoring the error that says HSE should be used. I'm no expert but I can see why yours is much easier.

Thanks