Possible use of Nanonote USB as communication method with [certain] Arduino [and similar]

Brian Stuart blstuart at gmail.com
Sat Apr 24 11:31:27 EDT 2010

On Sat, Apr 24, 2010 at 8:46 AM, Ron K. Jeffries <rjeffries at gmail.com>wrote:

> In that case, is the PC "in charge" and the Nanonote simply
> responds? That doesn't see like it would explain being able
> to establish a two-way link to the internet by
> Nanonote<-->PC<-->Internet

Basically, yes.  Essentially, everything in the USB world is polled by the
host controller.  The device just responds.   This is true even of the
transfers that are called interrupts!  So when the NN has an ethernet frame
to send, it holds on to it until the host comes around and asks if it has
any data packets to transfer in which case the host will give it permission
to transmit the data.

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