[Gta04-owner] /dev/ttyHS3 renames after resume to /dev/ttyHS6

NeilBrown neilb at suse.de
Sat Feb 11 00:12:43 CET 2012


On Fri, 10 Feb 2012 23:56:20 +0100 Christoph Mair <christoph.mair at gmail.com>
wrote:

> On Fri, Feb 10, 2012 at 10:14 PM, NeilBrown <neilb at suse.de> wrote:
> > Does this Option module really have a GPS in it?  If so, why aren't we using
> > it??
> 
> The Board was designed for a earlier version of the modem (GTM501
> IIRC) which did not have GPS built in. At some point in time Option
> discontinued this module and introduced the newer GTM601 with the same
> size. We had to switch because the old one was discontinued and could
> not be ordered anymore. Rewiring everything to use the new GPS
> function would have been way to much trouble because the GPS
> connectors (internal and external antenna) are on the top of the board
> while the modem is located on the bottom. Getting the weak GPS signal
> down there without being disturbed by all other components and traces
> on the board is a difficult task. We did not want to delay everything
> again.
> 
> If you want to use the integrated GPS, you can attach your own antenna
> to solderpads below the display.

Ahh..  that all makes perfect sense.
Thanks for the answer.

NeilBrown
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