Bluetooth to 2410 Wiring

[Wally Ritchie]

On 7/26/07, Harald Welte <laforge at openmoko.org> wrote:
> On Thu, Jul 26, 2007 at 09:35:30PM -0400, Wally Ritchie wrote:
<snip>
> > It would be extremely nice if the GTA02 hardware would route one of
> > these pins to an external wakeup interrupt. This would potentially
> > permit a 5mw power dissipation with wake up from Bluetooth (in flight
> > mode). There are numerous use cases where wakeup over BT is required.
>
> I will take this into consideration, but 99.9% there is no chance to
> introduce changes like this into GTA02 at this late level.  The two
> bluetooth GPIO's in question are used for bt/wifi coexistence, i.e. they
> are no longer available for other purpose.
>
> Since the bluetooth module is off-board on a FPC (just like in GTA01),
> any change for additional GPIO's would cause additional lines, i.e.
> redesign of the board-to-board connection, layout of both PCB's, ...
>
> Also, technically speaking, we don't have any free wakeup capable
> interrupt inputs on GTA02.
>
> I'll look into that issue, though.  If we still can make it, we will.
> But I'm not very confident.
>
Thanks for looking. There are a total of 8 flexible PIO's on the on BT module
of which you are using two. The wakeup function needs one external int
(of the 16) and another GPIO. This is two signals for a very critical function
of a BT equipped smartphone (actually one solved 5 years ago). If not possible
in first copper, maybe next or GTA03 but IMHO this an important function.
Personally i think failing to get BT right is not an option.

Thanks again for looking into this - I know your swamped.

> yes, but that data is confidential by Atheros :(
>
Not surprisingly if its any good.

Cheers,  Wally
> --
> - Harald Welte <laforge at openmoko.org>                   http://openmoko.org/
>
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