New user, some questions...

[sebba]

Hello again

I made 2 files, MDAair.js and MDAwater.js, placed in /usr/lib/node_modules/signalk-server/node_modules/@signalk/signalk-to-nmea0183/sentences folder

the MDAair.js is sending the environment.outside.temperature and the MDAwater.js is sending the environment.water.temperature

MDAair.js file I made look like this:

Code:

// NMEA0183 Encoder $IIMDA,29.95,I,1.01,B,19.8,C,17.0,C,68.0,,16.7,C,,,,,,,,*3F
const nmea = require('../nmea.js')
module.exports = function (app) {
 return {
   title: 'MDA - Outside Air Temperature - by sebba',
   keys: ['environment.outside.temperature'],
   f: function (temperature) {
     var celcius = (temperature) - 273.15
     return nmea.toSentence([
       '$IIMDA',
       ,
       'I',
       ,
       'B',
       celcius.toFixed(2),
       'C'
     ])
   }
 }
}

and MDAwater.js looks like this:

Code:

// NMEA0183 Encoder $IIMDA,29.95,I,1.01,B,19.8,C,17.0,C,68.0,,16.7,C,,,,,,,,*3F
const nmea = require('../nmea.js')
module.exports = function (app) {
 return {
   title: 'MDA - Water Temperature - by sebba',
   keys: ['environment.water.temperature'],
   f: function (temperature) {
     var celcius = (temperature) - 273.15
     return nmea.toSentence([
       '$IIMDA',
       ,
       'I',
       ,
       'B',
       ,
       'C',
       celcius.toFixed(2),
       'C'
     ])
   }
 }
}

It seems to be working... but I'm not still sure if this is the best way to do it.
I had to have 2 different files because I don't know how to add different temperature sources in the same sentence
I also so similar approach for relative/true wind sentences so I hope is OK.
I'll try to add the barometric data also.

Can I have some feedback, to know if this is the right way to work with this?

Thanks,
Seb