date and GPS related questions

Ed Kapitein ed at
Fri Mar 13 08:49:03 CET 2009

Hi Fernando,

On Thu, 2009-03-12 at 22:19 +0100, Fernando Martins wrote:
> Hi,
> 1) I got the date reset to 1970 a few times. I was not paying attention 
> but I guess this happens when battery is removed, i.e., there's no 
> battery specific for the clock?
> 2) Several posts mentioned that GPS could only get the fix if date was 
> correct, the requirements being within 1 sec precision. However, with 
> the date/time completely messed up, GPS is getting the fix anyway (and 
> it's fairly fast, 1 min or so). So, what's up? I'm using SHR unstable 
> from January. Is the GPS driver (?) being to ignore dates before FR 
> production, or something else?

There is no need for the clock to be correct to get a fix, however if
you want to use AGPS, the time has to be accurate in order to know where
the satelites are a what time.

I hope the other questions are answwered by someone else... ;-)
> 3) While using tangoGPS and I enter a building, when I come out, a fix 
> is not gotten until I reboot FR. Is this a known issue?  any quicker 
> workaround than rebooting?
> 4) How can I avoid going into suspend mode? (alternatively, are Power 
> Mng settings working in recent SHR testing?)
> Regards and TIA,
> Fernando
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> Openmoko community mailing list
> community at

Kind regards,

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