USB gadget vs slave [LWN.net]

USB gadget vs slave

Posted Jul 11, 2016 8:16 UTC (Mon) by farnz (subscriber, #17727)
In reply to: USB gadget vs slave by marcH
Parent article: USB charging, part 1: requirements

Except that, in a deep and technical sense, the brainless power adapter is the USB "master" or "host", while the supercomputer attached to it is the "slave", "device", or "gadget".

And OTG makes it even more complex, as the "host" role can swap between devices.

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USB gadget vs slave

Posted Jul 11, 2016 11:05 UTC (Mon) by tao (subscriber, #17563) [Link] (1 responses)

I think that was the whole point? That the slave owners are the brainless ones...

USB gadget vs slave

Posted Jul 11, 2016 13:13 UTC (Mon) by farnz (subscriber, #17727) [Link]

Trouble with that is that the terminology swaps around - the pocket computer is the device, whether it's attached to a desktop supercomputer host that outpaces it, or to a dumb charger host that couldn't outpace a 1970s home computer :)