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Raspberry pi zero/zeroW secret usb

Posted: Mon Mar 26, 2018 2:36 pm
by MaxiStarling
As you can see by the attachment, on the zero family there is a "secret" or not soldered usb.
What do that usb (if soldered) can do?

Re: Raspberry pi zero/zeroW secret usb

Posted: Mon Mar 26, 2018 2:45 pm
by jamesh
I think that is the VC4 JTAG connector.

Re: Raspberry pi zero/zeroW secret usb

Posted: Mon Mar 26, 2018 2:47 pm
by MaxiStarling
jamesh wrote:
Mon Mar 26, 2018 2:45 pm
I think that is the VC4 JTAG connector.
So wat it can do?

Re: Raspberry pi zero/zeroW secret usb

Posted: Mon Mar 26, 2018 2:49 pm
by jamesh
Provides debugging facilities for the Videocore GPU. So unless you work at RPF(T) and have access to the GPU source, not a lot.

Re: Raspberry pi zero/zeroW secret usb

Posted: Mon Mar 26, 2018 5:59 pm
by W. H. Heydt
It is probably worth pointing out in the context of this thread that the SoC used on the Pi0/Pi0W only has one USB port--and that is exposed as the microUSB connector. There simply isn't another USB port to be had without adding an external (to the SoC) hub like the ones on the B-series Pis.