node-red-contrib-knx-ultimate/KNXEngine/protocol/KNXTunnelingAck.js

Control your KNX intallation via Node-Red! Single Node KNX IN/OUT with optional ETS group address importer. Easy to use and highly configurable.

'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
exports.KNXTunnelingAck = void 0;
const KNXPacket_1 = require("./KNXPacket");
const KNXConstants_1 = require("./KNXConstants");
class KNXTunnelingAck extends KNXPacket_1.KNXPacket {
    constructor(channelID, seqCounter, status) {
        super(KNXConstants_1.KNX_CONSTANTS.TUNNELING_ACK, 4);
        this.channelID = channelID;
        this.seqCounter = seqCounter;
        this.status = status;
    }
    static createFromBuffer(buffer, offset = 0) {
        if (offset >= buffer.length) {
            throw new Error('Buffer too short');
        }
        const structureLength = buffer.readUInt8(offset);
        if (offset + structureLength > buffer.length) {
            throw new Error('Buffer too short');
        }
        offset += 1;
        const channelID = buffer.readUInt8(offset++);
        const seqCounter = buffer.readUInt8(offset++);
        const status = buffer.readUInt8(offset);
        return new KNXTunnelingAck(channelID, seqCounter, status);
    }
    toBuffer() {
        const buffer = Buffer.alloc(this.length);
        buffer.writeUInt8(this.length, 0);
        buffer.writeUInt8(this.channelID, 1);
        buffer.writeUInt8(this.seqCounter, 2);
        buffer.writeUInt8(this.status, 3);
        return Buffer.concat([this.header.toBuffer(), buffer]);
    }
}
exports.KNXTunnelingAck = KNXTunnelingAck;
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