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Re: [gpsd-dev] OS X dropped. How I think about our platform priorities
From: |
Eric S. Raymond |
Subject: |
Re: [gpsd-dev] OS X dropped. How I think about our platform priorities |
Date: |
Sun, 22 Feb 2015 10:18:57 -0500 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Frank Nicholas <address@hidden>:
> The "-b" option resolved all the strangeness, and the bluetooth GPS works.
> cgps works. I can start/stop/start gpsd on Ubuntu, with no ill effects.
> I then re-paired the GPS with OS X and it works perfectly. I can
> start/stop/start gpsd on OS X, with no ill effects. All of this testing
> (start/stop/start/re-pair/Linux/OS X) was without power cycling the GPS.
>
> Whatever gpsd does without the "-b" is getting my GlobalSAT BT-318 in an
> unusable state. Is auto-bauding all that's disabled with "-b"? Is some of
> the probing/device type detection disabled with "-b"? Maybe the probing is
> triggering the condition...
The -b option disables all writes to the GPS, so it could be either the
probing or the autobauding.
I think it is much more likely to be the autobauding. But you can test this.
Make two custom builds:
* one with minimal=yes and sirf=yes. That will knock out most or all of the
autoprobing.
* one with all drivers in but the baud rate fixed via fixed_port_speed.
Then see which one wedges the GPS.
I'll update the database entry for the BT-318 appropriately. I'll also
add this troubleshooting procedure to the FAQ.
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
Re: [gpsd-dev] OS X dropped. How I think about our platform priorities, Gary E. Miller, 2015/02/18
Re: [gpsd-dev] OS X dropped. How I think about our platform priorities, Bernd Zeimetz, 2015/02/22