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+--- Forum: How do I...? (https://forum.openmarine.net/forumdisplay.php?fid=3)
+--- Thread: Help: MWV to VWR, Raymarine... (/showthread.php?tid=534)
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RE: Help: MWV to VWR, Raymarine... - Knoet - 2021-03-19
If you are using SignalK, you can use the nmea0183-to-nmea0183 plugin for this purpose.
RE: Help: MWV to VWR, Raymarine... - PaddyB - 2021-03-19
(2021-03-19, 09:00 AM)Knoet Wrote: If you are using SignalK, you can use the nmea0183-to-nmea0183 plugin for this purpose.
Doesn't seem to work. Though the signalk-nmea0183 app does create and output a VWR nmea sentence from a MWV input.
<GREEN>10:13:24 (TCP:localhost:10110) $IIMWV,7.00,R,2.11,M,A*3B<0x0D><0x0A>
<GREEN>10:13:24 (TCP:localhost:10110) $IIVWR,7.00,R,4.10,N,2.11,M,7.59,K*42<0x0D><0x0A>
RE: Help: MWV to VWR, Raymarine... - Knoet - 2021-03-19
Excuse me, my answer was incomplete. In my setup, I use the signalk-to-nmea plugin to create a VWR message from signalK data, and the nmea-to-nmea plugin to send that to the right output.
RE: Help: MWV to VWR, Raymarine... - Txalamar - 2021-03-19
(2021-03-19, 12:26 PM)Knoet Wrote: Excuse me, my answer was incomplete. In my setup, I use the signalk-to-nmea plugin to create a VWR message from signalK data, and the nmea-to-nmea plugin to send that to the right output.
Hi,
I see what you mean. It seems to be a hardware piece. I think I would not pay for it just to convert from MWV to VWR NMEA sentence. To centralize information as I said I have the Quark QK-A031. I'ts just what I need as multiplexer and spread NMEA data through all instruments. It has a good relation functionality/price.
Just wonder if OpenCPN has a plugin to convert input NMEA data and then output it already converted. But at the same time it wolud be necessary to have the laptop always running. So I'll end up using Arduino to read from serial port the NMEA input from the Wind Vane and output it to the Autopilot as VWR. It won't be a complicated piece of coding, just a bit of character manipulation and the use of serial in and out. I think I even wont have to recalculate the Checksum as it only affects the payload. I'll go for that option and update the info in that thread if it ends up ok
Kind regards,
RE: Help: MWV to VWR, Raymarine... - PaddyB - 2021-03-19
(2021-03-19, 04:59 PM)Txalamar Wrote: I think I even wont have to recalculate the Checksum
Creating a valid checksum only a few lines >>
Code:
char checkSum(String theseChars) {
char check = 0;
// iterate over the string, XOR each byte with the total sum:
for (int c = 0; c < theseChars.length(); c++) {
check = char(check ^ theseChars.charAt(c));
}
// return the result
return check;
}RE: Help: MWV to VWR, Raymarine... - Txalamar - 2021-03-19
Thanks for the function. You're right I'll have to recalculate the Checksum.
RE: Help: MWV to VWR, Raymarine... - Knoet - 2021-03-19
(2021-03-19, 04:59 PM)Txalamar Wrote:(2021-03-19, 12:26 PM)Knoet Wrote: Excuse me, my answer was incomplete. In my setup, I use the signalk-to-nmea plugin to create a VWR message from signalK data, and the nmea-to-nmea plugin to send that to the right output.
I see what you mean. It seems to be a hardware piece.
Not exactly, the signalK server is software; although it runs on hardware of course
As we are in the openplotter forum, I just assumed you were already running openplotter which includes a signalK server. I see now you're after a different solution.
Kind regards