bt-sensors-plugin-sk
Version:
Bluetooth Sensors for Signalk - see https://www.npmjs.com/package/bt-sensors-plugin-sk#supported-sensors for a list of supported sensors
126 lines (110 loc) • 6.73 kB
JavaScript
/*
Service UUID Characteristic UUID Type Param Convertion Unit SignalK Path Comment
00000000-0000-1000-8000-ec55f9f5b963 (Unknown) 00000001-0000-1000-8000-ec55f9f5b963 write / indicate SDP - - - Enable or disable data stream. To enable write 0x0D 0x01; To disable write 0x0D 0x00.
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000101-0000-1000-8000-ec55f9f5b963 read ? - - ? Returns: Value: 1.1.0 (raw: 312e312e30)
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000102-0000-1000-8000-ec55f9f5b963 write / notify ENGINE_RPM_UUID value / 60 Hz propulsion.p0.revolutions
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000103-0000-1000-8000-ec55f9f5b963 write / notify COOLANT_TEMPERATURE_UUID value + 273.15 Kelvin propulsion.p0.temperature
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000104-0000-1000-8000-ec55f9f5b963 write / notify BATTERY_VOLTAGE_UUID value / 1000 Volts propulsion.p0.alternatorVoltage
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000105-0000-1000-8000-ec55f9f5b963 write / notify UNK_105_UUID ? ? ? Need longer data to figure out what is it. Value around 17384.
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000106-0000-1000-8000-ec55f9f5b963 write / notify ENGINE_RUNTIME_UUID value * 60 Seconds propulsion.p0.runTime
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000107-0000-1000-8000-ec55f9f5b963 write / notify CURRENT_FUEL_FLOW_UUID value / 100000 m3 / hour propulsion.p0.fuel.rate
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000108-0000-1000-8000-ec55f9f5b963 write / notify FUEL_TANK_PCT_UUID value / 100 % propulsion.p0.fuel.tank Maybe there is a more appropriate name for the Signalk path
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 00000109-0000-1000-8000-ec55f9f5b963 write / notify UNK_109_UUID ? ? ? Need longer data to figure out what is it. Raw data varied from 102701 to 102700.
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 0000010a-0000-1000-8000-ec55f9f5b963 write / notify OIL_PRESSURE_UUID value / 100 kPascal propulsion.p0.oilPressure
00000100-0000-1000-8000-ec55f9f5b963 (L2CAP) 0000010b-0000-1000-8000-ec55f9f5b963 write / notify UNK_10B_UUID ? ? ? Always zero. To investigate with more data.
*/
const BTSensor = require("../BTSensor");
class MercurySmartcraft extends BTSensor{
static Domain = BTSensor.SensorDomains.propulsion
static async identify(device){
const name = await this.getDeviceProp(device,"Name")
const address = await this.getDeviceProp(device,"Address")
if (name && address && name == `VVM_${address.replace(":","")}`)
return this
else
return null
}
hasGATT(){
return false
}
usingGATT(){
return true
}
emitGATT(){
}
initSchema(){
const bo = 2
super.initSchema()
this.addParameter(
"id",
{
"title": "Engine ID",
"examples": ["port","starboard","p0","p1"],
"isRequired": true
}
)
this.addMetadatum("rpm","Hz","engine revolutions per sec",
(buffer)=>{return buffer.readUInt16LE(bo)/60}
).default='propulsion.{id}.revolutions'
this.addMetadatum("coolant","K","temperature of engine coolant in K",
(buffer)=>{return buffer.readUInt16LE(bo)+273.15}
).default='propulsion.{id}.coolantTemperature'
this.addMetadatum("alternatorVoltage","V","voltage of alternator",
(buffer)=>{return buffer.readUInt16LE(bo)/1000}
).default='propulsion.{id}.alternatorVoltage'
this.addMetadatum("runtime","s","Total running time for engine (Engine Hours in seconds)",
(buffer)=>{return buffer.readUInt16LE(bo)*60}
).default='propulsion.{id}.runTime'
this.addMetadatum("rate","m3/s","Fuel rate of consumption (cubic meters per second)",
(buffer)=>{return buffer.readUInt16LE(bo)/100000/3600}
).default='propulsion.{id}.fuel.rate'
this.addMetadatum("pressure","Pa","Fuel pressure",
(buffer)=>{return buffer.readUInt16LE(bo)*10}
).default='propulsion.{id}.pressure'
this.addMetadatum("level","ratio","Level of fluid in tank 0-100%",
(buffer)=>{return buffer.readUInt16LE(bo)/10000}
).default='tanks.petrol.currentLevel'
}
initGATTConnection(){
return new Promise((resolve,reject )=>{ this.deviceConnect().then(async ()=>{
if (!this.gattServer) {
this.gattServer = await this.device.gatt()
this.sdpService = await this.gattServer.getPrimaryService("00000000-0000-1000-8000-ec55f9f5b963")
this.sdpCharacteristic = await this.sdpService.getCharacteristic("00000001-0000-1000-8000-ec55f9f5b963")
this.dataService = await this.gattServer.getPrimaryService("00000100-0000-1000-8000-ec55f9f5b963")
this.dataCharacteristics = {
rpm: await this.dataService.getCharacteristic("00000102-0000-1000-8000-ec55f9f5b963"),
coolant: await this.dataService.getCharacteristic("00000103-0000-1000-8000-ec55f9f5b963"),
alternatorVoltage: await this.dataService.getCharacteristic("00000104-0000-1000-8000-ec55f9f5b963"),
runtime: await this.dataService.getCharacteristic("00000106-0000-1000-8000-ec55f9f5b963"),
rate: await this.dataService.getCharacteristic("00000107-0000-1000-8000-ec55f9f5b963"),
level: await this.dataService.getCharacteristic("00000108-0000-1000-8000-ec55f9f5b963"),
pressure: await this.dataService.getCharacteristic("0000010a-0000-1000-8000-ec55f9f5b963")
}
}
resolve(this)
}) .catch((e)=>{ reject(e.message) }) })
}
async initGATTNotifications() {
await this.sdpCharacteristic.writeValue(Buffer.from([0x0D,0x01]))
for (const c in this.dataCharacteristics){
Promise.resolve(this.dataCharacteristics[c].startNotifications().then(()=>{
this.dataCharacteristics[c].on('valuechanged', buffer => {
this.emitData(c,buffer)
})
}))
}
}
async stopListening(){
super.stopListening()
for (const c in this.dataCharacteristics){
if (this.dataCharacteristics[c] && await this.dataCharacteristics[c].isNotifying()) {
await this.dataCharacteristics[c].stopNotifications()
}
}
if (await this.device.isConnected()){
await this.device.disconnect()
}
}
}
module.exports=MercurySmartcraft