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Re: [gpsd-dev] ubxtool and remote gpsd

From: Gary E. Miller
Subject: Re: [gpsd-dev] ubxtool and remote gpsd
Date: Mon, 1 Jul 2019 14:26:15 -0700

Yo Ken!

On Mon, 1 Jul 2019 07:35:27 -0600
Ken McGuire <address@hidden> wrote:

> > Nice.  Any feed back on those welcomoe.  
> The F9x series is a game changer for the low cost high precision
> arena.

Yup.  I can easily get 1 cm accuracy with PPP.

> I've been working with Clive on several different board designs using 
> those parts, for a while.

Ah. Good.  The sample F9T board I have from Clive works great for me.

> > Works for me.  But there were some fixes there last week.  Can
> > you confirm this with git head?  
> The system is complicated by the fact that there are 2 different 
> architecture devices running 2 different OSs, I originally thought
> the problem was with the OPi0 which runs gpsd. But after the nmap and
> nc tests showed that port 2947 was open I started looking at ubxtool
> and its support code on my desktop.

It always in the dark corners that the dust collects.  So keep at it.

> Here is what I've done since you replied, I'm not done testing, and 
> won't have time to co much more today:

That all, except setp 5/6 looks good to me.

> 5 ran ./ubxtool on my desktop and got: ubxtool: failed
> to connect to gpsd [Errno 111] Connection refused

I can no duplicate this with git head.  I can do both of these:
        ./ubxtool [ipv4]
        ./ubxtool [hostname]

So either your git is slighlty older than mine, or something we need to
find and fix.

That code was changed by:

commit e00c2bd65d95bd8d71077fa9147cdfd6b07504fd
Date:   Thu Jun 27 19:51:59 2019 -0700

So any test earlier than Friday is stale data.

> 6 at line 47 of added:         print ('connect:', (host,
> port))

Which should be a NOP, except it breaks the port selection.

> 7 ran:
> ./ubxtool
> connect: ('', '2947')
> ubxtool: failed to connect to gpsd [Errno 111] Connection refused

Odd.  I do not see how the before Friday code would have done that.

> and then:
> ./ubxtool
> connect: ('', '2947')
> ubxtool: failed to connect to gpsd [Errno 111] Connection refused

Doubly odd.  Can you confirm your UBXOPTS environment variable is

> 8 This leads me to believe that something is amuck with how ubxtool
> was dealing with the server:port parameter it is passed.

I agree, except I can't duplicate, nor do I see how the code before
the recent fix could fail that way.

What is your Python version?

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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