[maemo-users] [maemo-users] Wired keyboard and N800

From: Luca Donaggio donaggio at gmail.com
Date: Wed Jan 31 19:18:57 EET 2007
2007/1/31, Jon Smirl <jonsmirl at gmail.com>:
> On 1/31/07, Luca Donaggio <donaggio at gmail.com> wrote:
> > Does anybody tried to use a USB keyboard (attached to a modified USB hub
> for
> > power injection, of course) with the N800 in USB host mode?
> > It doesn't work for me, keybord led doesn't even light up!
> There is no power supplied to the USB port. The only way to make it
> work is to plug a powered hub into the port and then plug the keyboard
> into the hub.
> I consider this a significant design flaw in the N800/770. It would
> really be nice if there was a small amount of power supplied to the
> USB port, just enough to run a keyboard or memory stick. Less than
> 100ma at 5V. Sure it will draw the batteries down but that is the
> price you pay. If you have the N800/770 on wall power the USB port
> should supply power all of the time.
> No power is also tied up in implementing the kernel USB OTG driver for
> the device. The spec says you can't advertise OTG support if the port
> has no power.
> --
> Jon Smirl
> jonsmirl at gmail.com
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