Tool for forwarding NMEA messages from TCP sockets and serial ports. Useful when two or more NMEA device(s) need to all share data. Loosely inspired by @tridge's MAVProxy.
- Multiplex data from multiple NMEA sources
- Supports multiple 'talkers'. For example, data from a connected GPS can be combined with autopilot routing information from OpenCPN.
- Python 2.7
- pyserial (
pip install pyserial)
Here's how I use it on my RaspberryPi to share NMEA data from /dev/ttyACM0 (a USB SeaTalk <-> NMEA converter) with devices on the network (my iPad, iPhone, and laptop):
./nmea_proxy.py --tcp 2001 --tcp 2002 --tcp 2003 --uart /dev/ttyACM0
An init.d startup script is included in the scripts directory. To use it make sure nmea_proxy.py is somewhere in your $PATH. For example, you could symlink nmea_proxy.py to a bin directory.
ln -s $PWD/NMEAProxy/nmea_proxy.py /usr/local/bin/nmea_proxy.py
Then copy the script into the /etc/init.d directory.
cp scripts/nmea_proxy /etc/init.d/
You can then configure NMEAProxy to start at boot with (using SysV)
sudo update-rc.d nmea_proxy defaults
sudo update-rc.d nmea_proxy enable
Or (using SystemD)
sudo systemctl enable nmea_proxy
Note that you may need to edit the nmea_proxy script with the desired options depending on your setup.
NMEA Proxy is released under the GNU General Public License v3 or later