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feature: add support for multiple NMEA 2000 interfaces #72

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feature: add support for multiple NMEA 2000 interfaces #72

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43 changes: 36 additions & 7 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,14 @@ module.exports = function(app) {
title: "Conversions to NMEA2000",
description:
"If there is SignalK data for the conversion generate the following NMEA2000 pgns from Signal K data:",
properties: {}
properties: {
defaultOutEvents: {
type: 'string',
title: 'Default NMEA 2000 Json Out Events',
description: 'Comma separated list of event names',
default: 'nmea2000JsonOut'
}
}
};

updateSchema()
Expand All @@ -81,6 +88,11 @@ module.exports = function(app) {
title: 'Resend Duration (seconds)',
description:'The value will be resent for the given #number of seconds',
default: 30
},
outEvents: {
type: 'string',
title: 'NMEA 2000 Json Out Event',
description: 'Comma separated list of event name, leave blank to use the default'
}
}
}
Expand Down Expand Up @@ -108,6 +120,13 @@ module.exports = function(app) {
}

plugin.start = function(options) {
let defaultOutEvents
if ( typeof options.defaultOutEvents === 'undefined' || options.defaultOutEvents === "" ) {
defaultOutEvents = ['nmea2000JsonOut']
} else {
defaultOutEvents = options.defaultOutEvents.split(',')
}

conversions.forEach(conversion => {
if ( !_.isArray(conversion) ) {
conversion = [ conversion ]
Expand All @@ -116,6 +135,14 @@ module.exports = function(app) {
if ( options[conversion.optionKey] && options[conversion.optionKey].enabled ) {
app.debug(`${conversion.title} is enabled`)

let outEventSettings = options[conversion.optionKey].outEvents

if ( typeof outEventSettings === 'undefined' || outEventSettings === '' ) {
conversion.outEvents = defaultOutEvents
} else {
conversion.outEvents = outEventSettings.split(',')
}

var subConversions = conversion.conversions
if ( _.isUndefined(subConversions) ) {
subConversions = [ conversion ]
Expand Down Expand Up @@ -161,7 +188,7 @@ module.exports = function(app) {
}).filter(converter => { return typeof converter !== 'undefined'; });
}

function processBufferOutput(pgns) {
function processBufferOutput(conversion, options, pgns) {
if ( pgns ) {
pgns.filter(pgn => pgn != null).forEach(pgn => {
try {
Expand All @@ -176,12 +203,14 @@ module.exports = function(app) {
}
}

function processToN2K(pgns) {
function processToN2K(conversion, options, pgns) {
if ( pgns ) {
pgns.filter(pgn => pgn != null).forEach(pgn => {
try {
app.debug(`emit nmea2000JsonOut ${JSON.stringify(pgn)}`)
app.emit("nmea2000JsonOut", pgn);
conversion.outEvents.forEach(event => {
app.debug(`emit ${event} ${JSON.stringify(pgn)}`)
app.emit(event, pgn);
})
}
catch ( err ) {
console.error(`error writing pgn ${JSON.stringify(pgn)}`)
Expand All @@ -206,14 +235,14 @@ module.exports = function(app) {
}
const startedAt = Date.now()
conversion.resendTimer = setInterval(() => {
outputTypes[conversion.outputType](output)
outputTypes[conversion.outputType](conversion, options, output)
if ( Date.now() - startedAt > (options.resendTime || 30) * 1000 ) {
clearResendInterval(conversion.resendTimer)
}
}, options.resend * 1000)
timers.push(conversion.resendTimer)
}
outputTypes[conversion.outputType](output)
outputTypes[conversion.outputType](conversion, options, output)
}

function mapBaconjs(conversion, options) {
Expand Down