In article <o836gm$kn3$
1...@gioia.aioe.org>,
> On Tue, 14 Feb 2017 21:52:57 -0800, isw wrote:
>
> > The GPS unit will output single-line ASCII "sentences", some of which
> > will contain very precise location and time info (GPS time, that is).
> >
> > If you're interested, google on "NMEA 0183" to get a list of the things
> > it can tell you.
>
> NMEA 0183 is a combined electrical and data specification for communication
> between marine electronics such as echo sounder, sonars, anemometer,
> gyrocompass, autopilot, GPS receivers and many other types of instruments.
> It has been defined by, and is controlled by, the National Marine
> Electronics Association.
Yes, it is. And if you look someplace like here:
http://www.gpsinformation.org/dale/nmea.htm
you can find a list of the "sentences" taht a GPS unit outputs/
You may have to go right to the GPS subunit to get the data, but you can
use any of several makes of serial-USB adapters, and any sort of TTY
emulator your OS supports. FWIW, I have found ones using CP-2102 and
Ft232 chips to be reliable, and ones with the PL2303 to be not so good.
Take care to get the polarity and voltages correct; most of the adapters
(but not all) use "TTL-level RS-232", where the logic one and zero
levels are inverted from "normal" RS-232. I have no idea what sort of
signal levels that particular device emits.
The GPS unit will output ASCII "sentences" which are plain text.
Isaac