Re: ubxtool

[Gary E. Miller]

Yo address@hidden!

On Thu, 2 Apr 2020 23:39:37 -0400
<address@hidden> wrote:

>  I am just a software systems integrator hoping to piece together a
> cell modem, an F9P and a RaspberryPi and make them into a fairly
> accurate tracking system for a fruit farmer I am working with. I know
> enough about GPS/RTK to be dangerous , but know that I have a long
> way to go and look forward to your sage advice.

You are actually a pretty typical gpsd user.

Except the F9P is bleeding edge.  Many fixes in git head.  More coming.

> I have been able to hook this same F9P up to a Windows system and use
> RTKlib's str2str utility with the same NTRIP caster and have gotten
> an RTK fix.

How do you know?

> Just to review, the message below indicates that a RTCM3 message was
> received by GPSD,  correct?

Yes, and sent, verbatim, to the F9P.  What we do not know is if the
RTCM3 packets you are sending are the ones the F9P needs.

>           gpsd:IO: SER: => GPS:
> d3014443302062dde0220020c1d4401a00000000202101007f7fe677e7a52223aa22282927a6
> 237fffffffff95c2d1d017e4568bf5f84
> d2877b6a02e037613b7f47f71fb2e14c7cbbf66815402c605a00c81e7d3ae476533d6e7a4cf7
> b9f1c83a108a214244d3c13f70a09bc
> 10b4a1f13bd27c9d323a4ef4bfea105be8b0398a930a061fcc6c80bfa403d2200f48a03fe587
> ecea1fca207f28fe8e69fa4095e90257a83a20f51a8388860e22183be8df9f40fedfb2050370
> 112f414e9c053c9e14f287d7377f6399fd8e5ff649e0612a817a86067e4619783865e0a1ab0b
> 66666666666666666666666666666666000000005d65fa657e18618eb5cd5e38db5cb5cb4555
> db95b363763afeb6fd69fac7f5b6e86dd0bba0c0d301a903520a6002f006100c6082b7a4ef49
> 1bd0378828f05190a2e3ee07df0fc11ae1e4f3c9c8efa1df43be87b4000c750d
> 
>           So what would be the reason that the RTCM3 message gets to
> gpsd, but it is not passed on to F9P?

Notice the "SER: => GPS:"?  That says gpsd sent the RTCM3 message, verbatim
to the F9P.

>           Does GPSD not know to send this on to the F9P?

Yes, and your log shows it did.

>           Is this some how related to the other problem that ubxtool
> was having ( multiple devices connected)?

As I said before: Not a problem, a feature.  You have 2 devices
connected: NTRIP and the F9P.  That is exactly what you want.

> Any words of wisdom to point me in direction ?

Sadly, no one has reported success with u-blox 9 series and any
NTRIP service.  I have tried and failed.  If you get it to work
then you are the first.

NTRIP with RTCM2 and the u-blox 8 works great.  I run that all the time.

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

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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