Re: Time of Week and Local Clock

Charles,

Are you sure the local time does not update?  The variable thetime in main
should be incremented
every second to keep your clock up to date.

Cliff
----- Original Message ----- 
From: "Charles Suprin" <[email protected]>
To: <[email protected]>
Sent: Wednesday, December 15, 2004 7:15 AM
Subject: [OpenSource_GPS] Time of Week and Local Clock


> Hello,
>
> I am using Opensource GPS 1.11a on an MSDOS machine and it works rather
> well.
>
> However when OPENSOURCE GPS is running the local clock time does not
update.
> This prevents a new instance from acquiring as the clock error is now
> greater than 300 seconds off. The same 300 second limit also prevents the
> receiver from doing a cold start.
>
> Has anyone looked at this issue?
>
> The two obvious solutions that come to my mind is to reset the local clock
> based on the TOW received from the GPS signal.  The other is to change
> if ( labs(d_tow)<300) in GPSISR.CPP to something more like
>
> if (labs(d_tow)<30000)
>
> Perhaps the second is prohibited by some integer quantization effect.
>
> Are there other approaches that I am not seeing?
>
> Thanks.
>
> Charles
>
>
>
>
>
>
>
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