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Re: [gpsd-users] NMEA sentence requirements
From: |
Eric S. Raymond |
Subject: |
Re: [gpsd-users] NMEA sentence requirements |
Date: |
Tue, 5 Apr 2016 06:00:25 -0400 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Roger Oberholtzer <address@hidden>:
> Have I missed a document that describes what sentences are required for
> various items in, say, the shared memory segment? This is also interesting
> for programs like xgps that show more information as various NMEA sentences
> are enabled (i.e., gpsd can perform more calculations). Without the
> sentences, xgps does not provide some information.
I guess that's not documented. But it's easy to figure out by looking at the
driver you're using. Look at which senence handlers return which data-validity
masks.
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>