From 7f055c55478fdec6ae110aa47e5ccbb36b6372f4 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond"
The final irritation about NMEA is that it's expensive to buy a -copy. The National Marine Electronics Association is a trade group of +description. The National Marine Electronics Association is a trade group of electronics dealers, and they want $250 for a copy of their standard. Numerous Web sources have reverse-engineered or abstracted @@ -329,8 +329,8 @@ violations.
have never seen a copy of the official NMEA standard. Fortunately, it isn't necessary for evengpsd
developers to know most of
it, since most modern GPS sensors only emit about a half-dozen of the
-eighty or so NMEA sentences. RMC, GGA, GSA, GSV are all you are ever
-likely to need to know about.
+eighty or so NMEA sentences. RMC, GGA, GSA, GSV (and now possibly
+GBS) are all you are ever likely to need to know about.
After you've read about those sentences, it can be instructive to
run gpsd
in a mode something like this: