bt-sensors-plugin-sk/sensor_classes/IBeacon.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 BTSensor = require("../BTSensor");

class IBeacon extends BTSensor {
    static isSystem = true;

    static async identify(device) {
        const md = await this.getDeviceProp(device,'ManufacturerData');
        if (md && Object.hasOwn(md, 0x004c)) {
            if (md[0x004c].value.slice(0,2).join() == [0x02, 0x15].join()) {
            return this
            }
        }
    return null
    }

    async init() {
        await super.init();
        this.initMetadata();
    }

    initMetadata(){
        this.addMetadatum('battery','ratio', 'Battery charge state', (buffer)=>{return buffer[6]})
    }

    propertiesChanged(props){
        super.propertiesChanged(props);
        const buff = this.getServiceData("0000356e-0000-1000-8000-00805f9b34fb");
        if (!buff)
            throw new Error("Unable to get service data for " + this.getDisplayName());
        this.emitData("battery", buff);
    }

    getManufacturer(){
        return "Apple Inc. or clone";
    }

    getDescription(){
        return `${this.getName()} iBeacon from Apple Inc. or a clone`
    }
}

module.exports = IBeacon;