[Xastir] USB GPS?

[Tom Russo]

On Thu, May 24, 2007 at 02:39:49PM -0700, we recorded a bogon-computron collision of the <r.polivka at sbcglobal.net> flavor, containing:
> About the sequencing, if you have unique ID's to your USB components, one could hack the hotplug/udev scripts to steer the unique ID to a particular device name. I did it a long time ago for a M$ GPS dongle but I do not remember how to do it.

There is definitely a way to do it, and it involves a configuration file
in /etc and the device IDs as you suggest.  

In fact, here is something relevant on page 321 of O'Reilly's "Ubuntu Hacks", 
hack number 83.  It's about mounting USB storage devices with consistent 
names, though, so it'd have to be modified to work with serial adapters.  To 
summarize what I glean from it, one would use 
"udevinfo -a -p $(udevinfo -q path -n /dev/ttyUSB0)" to figure out the serial 
number (by looking for a "SYSFS{serial}" line, and then adding a line to
/etc/udev/rulse.d/10-local.rules that makes sure it gets a consistent device
name.  Or something like that.

That's something I've had no real use for so far --- but I do have multiple
USB serial adapters to try it out on, maybe I'll have time to look at that
this weekend. 

> Tom Russo <russo at bogodyn.org> wrote:
>   On Thu, May 24, 2007 at 10:38:12AM -0800, we recorded a bogon-computron collision of the flavor, containing:
> > On Wed, 2007-05-23 at 18:09 -0600, Earl Needham via Kubuntu wrote:
> > > Ah -- how do I use my Deluo "hockey puck" GPS with Xastir under Kubuntu? 
> > > I've been using the GPS in Windows XP, but I don't know how to configure the 
> > > GPS at all under Kubuntu.
> > > 
> > 
> > 
> > Below is an excerpt from my /var/log/messages file after plugging the
> > Deluo GPS in - the line that ends with "pl2303 converter now attached to
> > ttyUSB0" is the device you enter when you configure your GPS. 
> > So I entered "/dev/ttyUSB0" in my "Configure GPS" window in Xastir. You
> > have to change your permissions to read/write for that port. I'm using
> > Fedora 6 so you may have to browse a bit to find the Kubuntu settings.
> > 
> 
> Actually, on Ubuntu/Kubuntu, you are probably already set up with permissions;
> by default, serial ports (including USB/Serial adapters) get set to group
> ownership of "dialout", and in general when you set yourself up with an
> account on installation of the system it adds you to that group. 
> 
> So really all you need to do is go into Xastir, add a serial GPS, and 
> use /dev/ttyUSB0 as the port (if that's what it says it connected to
> in /var/log/messages).
> 
> If you add more than one USB serial device (e.g. a TNC) you might start to have
> trouble when you insert the devices in a different order (i.e. this time it
> might come in as ttyUSB0 and next time as ttyUSB1). There are ways you 
> can assure that any USB device attached always gets the same name, but
> I haven't ever bothered to figure it out --- I usually only have one USB 
> serial device attached at a time, so they're all always /dev/ttyUSB0.
> 
> -- 
> Tom Russo KM5VY SAR502 DM64ux http://www.swcp.com/~russo/
> Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM
> "And, isn't sanity really just a one-trick pony anyway? I mean all you get is
> one trick, rational thinking, but when you're good and crazy, oooh, oooh,
> oooh, the sky is the limit!" --- The Tick
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-- 
Tom Russo    KM5VY   SAR502   DM64ux          http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM
"And, isn't sanity really just a one-trick pony anyway? I mean all you get is
 one trick, rational thinking, but when you're good and crazy, oooh, oooh,
 oooh, the sky is the limit!"  --- The Tick