Description

NMEA0183 multiplexer (and tools), written in python (python3).

Comes with a lib that make it easy to connect to NMEA0183 servers and to send NMEA sentences. Reading/Filtering NMEA sentences is also possible.

External tools

The following scripts/libs are required:

• python3 + pip3 (python3-pip or dev-python/pip package)
• geographiclib: pip3 install geographiclib
• A C compiler for the grib tools

Current content of the repository

"/bin" contains

• A "multiplexer" can be used to connect several NMEA0183 clients.
• A "joiner" connects a mutiplexer (or any NMEA server) to another multiplexer or server (one way).
• A "pipe" connects a mutiplexer (or any NMEA server) to another multiplexer or server (bi-directional).
• A "console" can be plugged-in on the multiplexer to monitor live NMEA0183 traffic.

"/lib" contains

• nmea0183.py: encoding/decoding/filtering library
• nmeaSender.py: NMEA0183 message sending (to server) library
• nmeaTranceiver.py: asyncio based lib to create intelligent NMEA clients
• geoCalc.py: geographiclib based lib to do geographic calculations + convert Deg/Minute/Sec/Hemi format to NMEA format (decimal degrees)
• aisMsg.py: lib to encode/decode AIS messages, based on ITU-R M.1371-5 Annex 8 (2014)
• [...]

"/tools" contains

• boat.py: a simple test boat that receives RMBs and sends RMCs
• dpt.py: a simple depth transducer that sends DPT
• PetitBaigneur.py: a fake Cargo ship that sends it's AIS position
• MOB.py: a MOB AIS signal
• CardNorth: Simulate AIS Cardinal N
• [...]

Also...

Also included: tools to decode GRIB files, polars, etc.