From 7f055c55478fdec6ae110aa47e5ccbb36b6372f4 Mon Sep 17 00:00:00 2001 From: "Eric S. Raymond" Date: Fri, 18 Sep 2009 20:37:20 +0000 Subject: Website polishing. --- www/gps-hacking.html | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'www/gps-hacking.html') diff --git a/www/gps-hacking.html b/www/gps-hacking.html index 15f1c682..5d843502 100644 --- a/www/gps-hacking.html +++ b/www/gps-hacking.html @@ -316,7 +316,7 @@ vx, vy, vz) and their error estimates.

Learning more about NMEA

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 even gpsd 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:

-- cgit v1.2.1