NMEA2000: water temp not shown in Dashboard

[Aldebaran17]

I get water temp data via N2K from an Airmar Triducer. The Nmea window shows:

<GREEN>18:31:45 (N2000) PGN: 130312 Source: nmea2000 socketCAN-can0 ID: 0 Desc: Temperature. Not used by OCPN, maybe by Plugins

<GREEN>18:31:45 (N2000) PGN: 130316 Source: nmea2000 socketCAN-can0 ID: 0 Desc: Temperature extended range. Not used by OCPN, maybe by Plugins

The dashboard does not show the temp data.

When reading the data via SignalK the temperature is displayed.

I guess both PGNs are not supported by the Dashboard.

Can I do anything about it?

Manfred

[Hakan]

Originally Posted by Aldebaran17

I get water temp data via N2K from an Airmar Triducer....
I guess both PGNs are not supported by the Dashboard.
Manfred

Sorry, neither PGN 130312 nor PGN 130316 are so far implemented in Dashboard.

[Aldebaran17]

Thanks again Hakan.

So, here as well I have to take the route via SignalK.

[stevead]

Perhaps a good reason for the built-in plugins (Dashboard, Grib, Chart Downloader, World Magnetic Model) to no longer be built-in, but rather to be installed via the plugin manager.

1. Allows the plugins to be released independently of OpenCPN release cycles thereby enabling bug fixes or new features to be made available more frequently.
2. The core developers can share the pain suffered by developers of managed plug-ins.

[Hakan]

stevead..
Perhaps something to discuss but in this case we anyway need core OCPN to handle the PGNs and pass them to any plugin.

[stevead]

OpenCPN core doesn't need to process this.

The Dashboard plugin just needs to implement something like:

int dashboard_pi::Init(void) {
......

	// PGN 130312 NMEA Temperature
	wxDEFINE_EVENT(EVT_N2K_130312, ObservedEvt);
	NMEA2000Id id_130312= NMEA2000Id(130312);
	listener_130312 = std::move(GetListener(id_130312, EVT_N2K_130312, this));
	Bind(EVT_N2K_130312, [&](ObservedEvt ev) {
		HandleN2K_130312(ev);
	});

......

void dashboard_pi::HandleN2K_130312(ObservedEvt ev) {
	NMEA2000Id id_130312(130312);
	std::vector<uint8_t>payload = GetN2000Payload(id_130312, ev);

......
	Decode data
......
	SendToAllInstruments(blah, blah);

I'm not sure whether Timo's libraries which are used by OpenCPN for decoding support this PGN. I'm aware of a few that aren't such as 129040 (AIS Class B Extended Position Report) and 129808 (DSC Call Information).

[Hakan]

stevead..
You're correct. And e.g. PGN 130312 is included the core OCPN PGN list.
This would have been clear also from the NMEA debug example above where PGN 130312 is recognized. Sorry for my to fast reply.
Thanks

[Hakan]

stevead..
We may both have missed one thing.
When I tried this for PGN 130312 we actually have to update core OCPN!

.\OpenCPN\libs\N2KParser\src\N2KParser.cpp needed an update as well so....

[stevead]

That's why I qualified my response with

I'm not sure whether Timo's libraries which are used by OpenCPN for decoding support this PGN.

And why I made the suggestion that the built-in plugins, should be released independently of OpenCPN core, via the plugin manager.

[Aldebaran17]

Originally Posted by stevead

I'm not sure whether Timo's libraries which are used by OpenCPN for decoding support this PGN.

I just checked on Timo's GitHub: 130316 is implemented, whereas 130312 is labeled as deprecated.

Signal K (on Raspberry Pi), which may use the same library, interprets both PGNs.

Manfred