kwando/nmea

Parser for NMEA compliant sensors

NMEA

NMEA (National Marine Electronics Association) 0183 is a standard for parsing sensor data for many marine electronics like echo sounders, sonars, anemometers, gyrocompasses, autopilots and GPS receivers.

Example GPS data looks like this:

cat /dev/ttyACM0

$GPGGA,092750.000,5321.6802,N,00630.3372,W,1,8,1.03,61.7,M,55.2,M,,*76
$GPGSA,A,3,10,07,05,02,29,04,08,13,,,,,1.72,1.03,1.38*0A
$GPGSV,3,1,11,10,63,137,17,07,61,098,15,05,59,290,20,08,54,157,30*70
$GPGSV,3,2,11,02,39,223,19,13,28,070,17,26,23,252,,04,14,186,14*79
$GPGSV,3,3,11,29,09,301,24,16,09,020,,36,,,*76
$GPRMC,092750.000,A,5321.6802,N,00630.3372,W,0.02,31.66,280511,,,A*43
$GPGGA,092751.000,5321.6802,N,00630.3371,W,1,8,1.03,61.7,M,55.3,M,,*75
$GPGSA,A,3,10,07,05,02,29,04,08,13,,,,,1.72,1.03,1.38*0A
$GPGSV,3,1,11,10,63,137,17,07,61,098,15,05,59,290,20,08,54,157,30*70
$GPGSV,3,2,11,02,39,223,16,13,28,070,17,26,23,252,,04,14,186,15*77
$GPGSV,3,3,11,29,09,301,24,16,09,020,,36,,,*76
$GPRMC,092751.000,A,5321.6802,N,00630.3371,W,0.06,31.66,280511,,,A*45

Every line starts with a dollar sign. The next 2 characters is the "talker", followed by 3 characters for the "type" of record. It is followed by a CSV and then a "*" followed by a checksum.

Tested with a ublox series 6 GPS receiver.

Installation

If available in Hex, the package can be installed by adding nmea to your list of dependencies in mix.exs:

def deps do
  [
    {:nmea, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/nmea.