NMEA

Go To Last Post
4 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

there seems to be lots of messages about parsing NMEA sentences from a GPS module; that's fine and looks straightforward.

But some of those sentences include 'reached waypoint information' or duplicate each other.

Hopefully, there is a standard that you can use to choose which sentences you get and do things like set waypoints, but google seems very quiet on these things.

I don't want to pay $350 for the full standard, can anyone help with a pointer to the basic command set/format?

Cheers,

Joey

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I just use $GPRMC for position data.

Leon Heller G1HSM

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I typed "NMEA sentences" into Google. Top hit was:

http://www.gpsinformation.org/da...

and thence:

http://www.gpsinformation.org/da...

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Excellent!

The input sentences are the same as the output ones, then there are a handful of SiRF sentences used to carry out housekeeping like setting the serial format and choosing which sentences to output.

Spot on, thanks.

Quote:

I just use $GPRMC for position data.

As the typical module does things like keeping track of waypoints I might as well take advantage of it.

What I needed was "nmea input sentences"!
Sparkfun have a datasheet that is much more helpful than those at RF solutions:
http://www.sparkfun.com/datasheets/GPS/NMEA%20Reference%20Manual1.pdf

Cheers,

Joey