Re: [gpsd-users] Missing fixes

[Gary E. Miller]

Yo Deven!

Please reply to the list, not me directly.

On Mon, 19 Feb 2018 19:36:44 -0800
Deven Hickingbotham <address@hidden> wrote:

> It is a NEO-7P.  Baud is 115200.  Interface is UART.

I've been working on a Javad using binary GREIS.  I can barely manage
4Hz at 115200.

Have you tried capturing the raw data to see if it is all there?
If you can send a copy to this list I can check it for you.

> Yes, a lot of data.  With that in mind, I configured the NEO-7P to 
> deliver only the necessary data:
> 
> GGA 1
> GLL 0
> GSA 5
> GSV 5
> RMC 1
> VTG 1

Those GSV can get really big.

> So GGA, RMC and VTG are delivered every cycle.  GSA and GSV every
> fifth cycle.  GLL is off.

OK.

> What I've tried to do is turn off everything that is not necessary. 
> What I need are lon, lat, speed, track, epx and epy every cycle.  I 
> could live with altitude updated every second.

OK.

> As a result, the only packets being transmitted are GGA, GSA, GSV,
> RMC and VTG.

No, you just said the others are in there too, just not at 10Hz.

> Is there anything else I could turn off or optimize?

Yeah, turn off 10Hz and go to 4Hz, if only for a test.  gpsd
does not handle input buffer overflows well...

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

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