AnsweredAssumed Answered

USB conflict in STM32CubeMX

Question asked by hauser.philipp on May 30, 2014
Latest reply on Jun 19, 2014 by STM32Cube-T
Hi there,

i'm trying to set up a STM32F429 as an USB host.
Therefore i configured USB_OTG_FS in CubeMX as Host_Only.

Within the USB_OTG_FS configuration there is a checkbox called Activate_SOF which is marked red with the hint:
"Activate_SOF conflict with: I2C3: I2C I2C"

I don't know where the conflict is coming from, as all pins used by USB and I2C are different. Could it be a clocking issue?

As far as i know, the SOF (start of frame) is necessary for the host to operate. Is this true? Or is it possible to opearate the host without activation the SOF feature?

Thanks in advance!