Wakeup Computer from S3 Suspend about keyberon HOT 4 CLOSED

Sorry no idea. But I doubt that stm32-usbd suspend and resume are related, I think they are for usb protocol suspend/resume.

from keyberon.

I looked into QMK and it seems that it calls usb_lld_wakeup_host from chibios which sets the CNTR register with the RESUME bit for 2 milliseconds (USB standard states 1ms-15ms) and then clears the bit.

As you mentioned, this is not what the stm32-usbd resume or suspend is doing as that has to do with the LP_MODE bit, which I believe has more to do with the device than the host.

I am thinking this should be a part of stm32-usbd and not keyberon. Should I open an issue there?

What are other keyberon users doing to wake their computer from suspend? Power button?

from keyberon.

If that's dedicated register access, yes it should go in stm32-usbd.

I personally use a laptop, so opening lid wake up the computer.

from keyberon.

Created stm32-usbd issue to capture this.

from keyberon.