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feature: add support for Digital Yacht's NavLink2 #96

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merged 1 commit into from
Jan 16, 2020
Merged

feature: add support for Digital Yacht's NavLink2 #96

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156 changes: 131 additions & 25 deletions lib/ikonvert.js
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,10 @@ function iKonvertStream (options) {
objectMode: true
})

this.isTcp = options.tcp === true

this.outEvent = this.isTcp? 'navlink2-out' : 'ikonvertOut'

this.plainText = false
this.reconnect = options.reconnect || true
this.options = options
Expand Down Expand Up @@ -74,7 +78,14 @@ function iKonvertStream (options) {
that.sendPGN(msg)
})

this.sendString('$PDGY,N2NET_OFFLINE')
if ( this.isTcp ) {
this.isSetup = false
this.state = 0
this.setupCommands = this.getSetupCommands()
this.expecting = false
} else {
this.sendString('$PDGY,N2NET_OFFLINE')
}

debug('started')
}
Expand All @@ -87,7 +98,10 @@ iKonvertStream.prototype.start = function () {

iKonvertStream.prototype.sendString = function (msg) {
debug('sending %s', msg)
this.options.app.emit('ikonvertOut', msg)
if ( this.isTcp ) {
msg = msg + "\n\r"
}
this.options.app.emit(this.outEvent, msg)
}

iKonvertStream.prototype.sendPGN = function (pgn) {
Expand Down Expand Up @@ -136,40 +150,132 @@ iKonvertStream.prototype.setup = function () {
this.sendString(txPgns)
}

iKonvertStream.prototype.getSetupCommands = function () {
let txPgns = '$PDGY,TX_LIST'
this.transmitPGNs.forEach(pgn => {
txPgns = txPgns + `,${pgn}`
})

const setupCommands = [
'$PDGY,N2NET_OFFLINE:$PDGY,TEXT,Digital_Yacht_Navlink2',
'$PDGY,N2NET_MODE,15:$PDGY,ACK,N2NET_MODE',
`${txPgns}:$PDGY,ACK,TX_LIST`,
'$PDGY,N2NET_INIT,ALL:$PDGY,ACK,N2NET_INIT,ALL'
]
return setupCommands
}

iKonvertStream.prototype._transform = function (chunk, encoding, done) {
let line = chunk.toString().trim()
line = line.substring(0, line.length) // take off the \r

if ( line.startsWith('$PDGY') ) {
if ( line === '$PDGY,000000,,,,,,' ) {
//the iKonvert is not initialized
if ( !this.didSetup ) {
this.setup()
this.setProviderStatus('Initializing...')
this.didSetup = true
}
} else if ( line === '$PDGY,ACK,TX_LIST' ) {
debug('sending net init')
this.sendString('$PDGY,N2NET_INIT,ALL')
this.setProviderStatus('Initialized...')
} else if ( line === '$PDGY,ACK,N2NET_INIT,ALL' && !this.cansend ) {
this.cansend = true;
this.options.app.emit('nmea2000OutAvailable')
//this.sendString('$PDGY,SHOW_LISTS')
} else if ( line.startsWith('$PDGY,TEXT') ) {
debug(line)
} else if ( line.startsWith('$PDGY,000000') ) {
let parts = line.split(',')
debug('ikonvert can address: %s', parts[6])
if ( this.isTcp ) {
if ( line.startsWith('$PDGY,TEXT') ) {
debug(line)
} else if ( line.startsWith('$PDGY,NAK') ) {
let parts = line.split(',')
let msg = `iKonvert error ${parts[2]}: ${parts[3]}`
let msg = `NavLink2 error ${parts[2]}: ${parts[3]}`
console.error(msg)
this.setProviderError(msg)
}
} else {

if ( !this.isSetup ) {
debug(line)
let command = this.setupCommands[this.state].split(':')
if ( !this.expecting ) {
this.sendString(command[0])
this.expecting = true
this.sentTime = Date.now()
debug(`Waiting for ${command[1]}`)
} else {
if ( line.startsWith(command[1]) ) {
this.state = this.state + 1

if ( this.state == this.setupCommands.length ) {
this.isSetup = true
debug('Setup completed')
} else {
command = this.setupCommands[this.state].split(':')
this.sendString(command[0])
this.expecting = true
this.sentTime = Date.now()
debug(`Waiting for ${command[1]}`)
}
} else if ( Date.now() - this.sentTime > 5000 ) {
debug(`Did not receive expected: ${command[1]}, retrying...`)
this.sendString(command[0])
this.sentTime = Date.now()
}
}
} else {
this.push(line)
}


/*
if ( !this.didSetRaw ) {
this.setProviderStatus('Initializing...')
this.sendString('$PDGY,N2NET_OFFLINE')
this.sendString('$PDGY,N2NET_MODE,15')
this.setup()
this.didSetRaw = true
} else if ( !this.isSetup ) {
debug(line)
if ( line.startsWith('$PDGY,ACK,TX_LIST') ) {
this.sendString('$PDGY,N2NET_INIT,ALL')
} else if ( line.startsWith('$PDGY,ACK,N2NET_INIT,ALL') || line.startsWith('$PDGY,NAK,1,ALREADY_INITIALISED') ) {
this.cansend = true;
this.isSetup = true;
this.options.app.emit('nmea2000OutAvailable')
this.setProviderStatus('Connected')
}
} else {
this.push(line)
}
*/


/*else if ( !this.isSetup ) {
this.setup()
this.isSetup = true
}
if ( line.startsWith('$PDGY') ) {

} else if ( this.isSetup ) {
this.push(line)
}*/
} else {
if ( line.startsWith('$PDGY') ) {
if ( line === '$PDGY,000000,,,,,,' ) {
//the iKonvert is not initialized
if ( !this.didSetup ) {
this.setup()
this.setProviderStatus('Initializing...')
this.didSetup = true
}
} else if ( line === '$PDGY,ACK,TX_LIST' ) {
debug('sending net init')
this.sendString('$PDGY,N2NET_INIT,ALL')
this.setProviderStatus('Initialized...')
} else if ( line === '$PDGY,ACK,N2NET_INIT,ALL' && !this.cansend ) {
this.cansend = true;
this.options.app.emit('nmea2000OutAvailable')
//this.sendString('$PDGY,SHOW_LISTS')
} else if ( line.startsWith('$PDGY,TEXT') ) {
debug(line)
} else if ( line.startsWith('$PDGY,000000') ) {
let parts = line.split(',')
debug('ikonvert can address: %s', parts[6])
debug(line)
} else if ( line.startsWith('$PDGY,NAK') ) {
let parts = line.split(',')
let msg = `iKonvert error ${parts[2]}: ${parts[3]}`
console.error(msg)
this.setProviderError(msg)
}
} else {
this.push(line)
}
}

done()
Expand Down