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Date: Tue, 15 Jul 2014 09:06:36 +0200
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Subject: Re: [Qemu-devel] hw/arm: add Lego NXT board
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To: Peter Maydell <peter.maydell@linaro.org>, Alexander Graf <graf@campus.tu-berlin.de>
Cc: QEMU Developers <qemu-devel@nongnu.org>

Il 15/07/2014 00:48, Peter Maydell ha scritto:
>> > My interest is to fake sensor values for the guest and not to connect
>> > anything to real hardware. I think I misinterpreted your "chardev". To
>> > clarify: My guest is a bare metal ARM image, no linux and I don't want to
>> > interact with the host's hardware. So no chardev in the linux sense is
>> > involved.
> Right, but this is an optional part of Paolo's proposal as I understand
> it.

Correct, it's an additional part just to show that the interface can be 
useful for much more than bypassing the GPL. :)

As to the protocol, I found a datasheet of an I2C-to-UART bridge that 
could provide ideas: 
http://www.nxp.com/documents/data_sheet/SC18IM700.pdf chapter 7, it's 
very simple (just two commands, start and stop).

Paolo