Re: [gpsd-users] NMEA sentence requirements

[Eric S. Raymond]

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>