Gateway NMEA2000 / Ip

[LalunePierr0t]

Hi

I plan to build an nmea2000 to ip network gateway.
I want it compatible with OpenCPN.
Is there any documentation on how to present data from NMEA2000 for OpenCPN over TCP and IP?
or a standard API ?

Regards

[nohal]

Initial support for N2K over IP just landed in the master branch a few days ago.
Several formats used by the Actisense and YachtDevices gateways are supported and automatically detected

The format used by YachtDevices is byte compatible with the Actisense ASCII RAW format.

The other 3 Actisense formats are Actisense RAW, a binary version of the above, Actisense N2K ASCII and it's binary version Actisense N2K

All the forementioned formats are currently implemented in RX direction only, OpenCPN does not yet transmit data in them.

There is also Actisense NGT format, which is the same as the serial data produced by the NGT-1 gateway, just transmitted over the network. This format is the only one that does not support bidirectional communication on Actisense W2K-1 gateway and is not supported by OpenCPN's N2K over IP implementation at the moment at all (It's serial brother is).

The only public documentation I'm aware of is in the appendix E of https://www.yachtd.com/downloads/ydnr02.pdf

Actisense does not yet provide documentation for their formats, but you can refer either to our code in https://github.com/OpenCPN/OpenCPN/blob/master/model/src/comm_drv_n2k_net.cpp, the Go implementation in https://github.com/aldas/go-nmea-client/tree/main/actisense or the CANboatJS implementation at https://github.com/canboat/canboatjs for reference.

There at the moment is no external API for plugins to interact with this pipeline, but will be implemented in near future as well as the TX communication..

[LalunePierr0t]

Thanks for sharing your information