bt-sensors-plugin-sk/sensor_classes/Aranet2.js

Bluetooth Sensors for Signalk -- support for Victron devices, RuuviTag, Xiaomi, ATC and Inkbird, Ultrasonic wind meters, Mopeka tank readers, Renogy Battery and Solar Controllers, Aranet4 environment sensors, SwitchBot temp and humidity sensors, Kilovault

const AranetSensor = require("./Aranet/AranetSensor");
class Aranet2 extends AranetSensor{
    
    constructor(device, config={}){
        super(device,config)
    }
    static async identify(device){
        const name = await this.getDeviceProp(device,"Name")
        
        if ((await super.identify(device)!=null) && 
            name.toLowerCase().startsWith("aranet2")) {
            console.log("Aranet2 not currently supported")
            return null //not supported for now
        }
    }
    async init() {
        await super.init()
        this.initMetadata()
    }

    initMetadata(){
            this.addMetadatum('c02', '',  'c02 concentration',
                (buff)=>{return ((buff.readUInt16LE(8)))})
            this.addMetadatum('temp','K', 'temperature',
                (buff)=>{return parseFloat((273.15+(buff.readInt16LBE(15))/1000).toFixed(2))})

            this.addMetadatum("pressure","","atmospheric pressure", 
                (buff)=>{return ((buff.readUInt16LE(13)))/10})
            this.addMetadatum('batteryStrength', 'ratio',  'sensor battery strength',
                (buff)=>{return ((buff.readUInt8(12))/100)})

            this.addMetadatum('humidity','ratio', 'humidity',
                (buff)=>{return ((buff.readUInt16LE(8))/10000)})
        
    }
    propertiesChanged(props){
        super.propertiesChanged(props)
        if (!props.hasOwnProperty("ManufacturerData")) return

        const buff = this.getManufacturerData(0x0702)
        this.emitData("temp", buff)
        this.emitData("humidity", buff)
        this.emitData("pressure", buff)
        this.emitData("batteryStrength", buff)
        
    }                    

}
module.exports=Aranet2