mesh-net-codec/lib/devices/types/600-039.js

Decoder for enless LoRaWAN data frames.

const Device = require("./device/device").default;
const template = require("./../tools/template").default;
const parsers = require("./../tools/parsers");

class D600_039 extends Device {
    constructor() {
        super("Tx Contact");

        this.PAYLOAD_LENGTH = 44;

        this.template.addValueField({
            "pulse ch1": {
                unit: "count",
                value: template.templatedValue(12, 8, parsers.hexToUInt),
            },
        });
        this.template.addValueField({
            "pulse ch2": {
                unit: "count",
                value: template.templatedValue(20, 8, parsers.hexToUInt),
            },
        });
        this.template.addValueField({
            "pulse oc": {
                unit: "count",
                value: template.templatedValue(28, 8, parsers.hexToUInt),
            },
        });

        this.template.setField(template.fields.ALARM_STATUS, template.templatedValue(36, 4, this.alarmParser));

        this.template.addStateField({
            battery: template.templatedValue(40, 4, parsers.hexToBatteryLvl),
        });
        this.template.addStateField(template.templatedValue(40, 4, this.stateParser));
    }

    alarmParser(hexValue) {
        const defs = [
            { name: "pulse ch1", values: [{ change: false }, { change: true }], bit: 1 },
            { name: "pulse ch2", values: [{ change: false }, { change: true }], bit: 2 },
            { name: "pulse oc", values: [{ change: false }, { change: true }], bit: 3 },
        ];

        return parsers.hexToStatus(hexValue, defs);
    }

    stateParser(hexValue) {
        const defs = [
            { name: "pulse ch1", values: ["open", "closed"], bit: 5 },
            { name: "pulse ch2", values: ["open", "closed"], bit: 6 },
            { name: "pulse oc", values: ["open", "closed"], bit: 7 },
        ];

        return parsers.hexToStatus(hexValue, defs);
    }

    decode(payload) {
        return super.decode(payload, this.PAYLOAD_LENGTH);
    }
}

exports.device = D600_039;