Wakeup from system off by VBUS

[mosgaard2000]

Hi,

I haven't been able to actually find out if the VBUS can be used to drive the DETECT signal to go from system off to on mode.

Are there any examples on how to configure the VBUS to be used to wake up the system?

[Simonr]

Hi Morten

The USB peripheral is shut down in System OFF mode, so the only USB-related wake-up source will be VBUS detected, meaning that VBUS rises past the detect voltage. The USBD example implements power detection on the USB.

Best regards,

Simon

[Mihal]

hi. i did not implemented any USB functionality yet but VBUS is connected and MCU wakes up any time when USB connected or disconnected is there any easy way to turn this behavior off? board is battery powered

[Simonr]

Please create a new ticket regarding this issue, as we try to keep each ticket limited to one subject.

[Constantin]

Hi, did you get any information on your issue. I am facing the same situation. Kind regards, C.W