node-red-contrib-knx-ultimate
Version:
Control your KNX intallation via Node-Red! Single Node KNX IN/OUT with optional ETS group address importer. Easy to use and highly configurable.
53 lines • 2.38 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LDataInd = void 0;
const CEMIMessage = require("./CEMIMessage");
const CEMIConstants = require("./CEMIConstants");
const KNXAddress = require("../KNXAddress");
const ControlField = require("./ControlField");
const NPDU = require("./NPDU");
const KNXDataBuffer = require("../KNXDataBuffer");
class LDataInd extends CEMIMessage.CEMIMessage {
constructor(additionalInfo, control, srcAddress, dstAddress, npdu) {
super(CEMIConstants.CEMIConstants.L_DATA_IND, CEMIMessage.CEMIMessage.GetLength(additionalInfo, control, srcAddress, dstAddress, npdu), additionalInfo, control, srcAddress, dstAddress, npdu);
}
static createFromBuffer(buffer, offset = 0) {
if (offset >= buffer.length) {
throw new Error('Buffer too short');
}
const addLength = buffer.readUInt8(offset++);
let additionalInfo = null;
if (addLength > 0) {
additionalInfo = new KNXDataBuffer.KNXDataBuffer(buffer.slice(offset, addLength));
offset += addLength;
}
const controlField = ControlField.ControlField.createFromBuffer(buffer, offset);
offset += controlField.length;
const srcAddress = KNXAddress.KNXAddress.createFromBuffer(buffer, offset);
offset += srcAddress.length;
const dstAddress = KNXAddress.KNXAddress.createFromBuffer(buffer, offset, controlField.addressType);
offset += dstAddress.length;
const npdu = NPDU.NPDU.createFromBuffer(buffer, offset);
return new LDataInd(additionalInfo, controlField, srcAddress, dstAddress, npdu);
}
toBuffer() {
const buffer = Buffer.alloc(2);
const msgBuffer = [buffer];
let offset = 0;
buffer.writeUInt8(this.msgCode, offset++);
if (this.additionalInfo == null) {
buffer.writeUInt8(0, offset);
}
else {
buffer.writeUInt8(this.additionalInfo.length, offset);
msgBuffer.push(this.additionalInfo.value);
}
msgBuffer.push(this.control.toBuffer());
msgBuffer.push(this.srcAddress.toBuffer());
msgBuffer.push(this.dstAddress.toBuffer());
msgBuffer.push(this.npdu.toBuffer());
return Buffer.concat(msgBuffer);
}
}
exports.LDataInd = LDataInd;
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