From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Brownell <david-b@pacbell.net>
Subject: Re: Ejecting/Powering off/ -> Turn off the device lamp.
Date: Mon, 22 May 2006 10:07:16 -0700
Message-ID: <200605221007.18175.david-b@pacbell.net>
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On Monday 22 May 2006 9:50 am, Andy Kennedy wrote:

> I am working with an embedded system that will have no user interaction 
> save the USB port. ...
> 
> I have TTLs on the embedded system; I may just have to use those.

Sounds like you need to design in some additional user interaction,
either a LED driven by a GPIO to indicate "OK to remove", or else
a LED driven by that port's root hub.  (Some root hubs support the
standardized root hub LED mechanisms; most don't.)

- Dave


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