From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 24 Mar 2006 21:51:32 +0100
From: Christoph Lohmann <20h@r-36.net>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] just checking ...
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In-Reply-To: <8e12e6c2f4214f1d71d1a8a6fcde6c86@proxima.alt.za>
References: <20060324115108.b5ac6d93.20h@r-36.net>
	<8e12e6c2f4214f1d71d1a8a6fcde6c86@proxima.alt.za>
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Good evening.

Am Fri, 24 Mar 2006 20:47:51 +0200 schrieb lucio@proxima.alt.za:

> >> I do have another question, tangentially related: How does one turn
> >> charging on, on such a device?  Is it a separate USB function, or is
> >> it a trick of the simulated serial device?
> >
> > The device requests an amount of mA (milli Ampere) in the configuration
> > of the device and gets that from the USB controller. No need to set that
> > somewhere in userspace.
>
> But the charging function can be turned on or off (at least on, at any
> rate) on demand.  How is this done?  I've only seen it happen under
> Windows, with the help of a dedicated utility.

Sniff the USB Stack of Windows.

Sincerely,

Christoph