Problem with STMF4 USB HS embedded PHY CDC enumeration

[peterdonchev]

Posted on May 03, 2018 at 22:48

I have a problem with STM32F437, USB OTG Library 2.2.0  and USB HS with embedded PHY, CDC device.

First enumeration never pass in the right way (see the attached file).

After unplugging and plugging the cable, everything is OK.

I'm using Windows 10 and in the MCU, USB sensing is not used.

One ugly solution is to reset the HS OTG peripheral after first connection and reinit it again.

Any idea?

#cdc #stm32f437 #usb_otg

[peterdonchev]

Posted on May 03, 2018 at 22:57

Ahhh, I had a similar problem in the past and the solution was the same. Someone should fix all these examples.

The solution is here:

https://community.st.com/0D50X00009XkgkoSAB