node-bacnet
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The BACnet protocol library written in pure JavaScript.
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="bacnet.html">bacnet</a><ul class='methods'><li data-type='method'><a href="bacnet.html#.close">close</a></li><li data-type='method'><a href="bacnet.html#.confirmedCOVNotification">confirmedCOVNotification</a></li><li data-type='method'><a href="bacnet.html#.deviceCommunicationControl">deviceCommunicationControl</a></li><li data-type='method'><a href="bacnet.html#.iAmResponse">iAmResponse</a></li><li data-type='method'><a href="bacnet.html#.readProperty">readProperty</a></li><li data-type='method'><a href="bacnet.html#.readPropertyMultiple">readPropertyMultiple</a></li><li data-type='method'><a href="bacnet.html#.readPropertyResponse">readPropertyResponse</a></li><li data-type='method'><a href="bacnet.html#.reinitializeDevice">reinitializeDevice</a></li><li data-type='method'><a href="bacnet.html#.resultResponse">resultResponse</a></li><li data-type='method'><a href="bacnet.html#.timeSync">timeSync</a></li><li data-type='method'><a href="bacnet.html#.timeSyncUTC">timeSyncUTC</a></li><li data-type='method'><a href="bacnet.html#.unconfirmedCOVNotification">unconfirmedCOVNotification</a></li><li data-type='method'><a href="bacnet.html#.whoIs">whoIs</a></li><li data-type='method'><a href="bacnet.html#.writeProperty">writeProperty</a></li><li data-type='method'><a href="bacnet.html#.writePropertyMultiple">writePropertyMultiple</a></li></ul></li><li><a href="Client.html">Client</a><ul class='methods'><li data-type='method'><a href="Client.html#.createBitstring">createBitstring</a></li><li data-type='method'><a href="Client.html#acknowledgeAlarm">acknowledgeAlarm</a></li><li data-type='method'><a href="Client.html#addListElement">addListElement</a></li><li data-type='method'><a href="Client.html#confirmedEventNotification">confirmedEventNotification</a></li><li data-type='method'><a href="Client.html#confirmedPrivateTransfer">confirmedPrivateTransfer</a></li><li data-type='method'><a href="Client.html#createObject">createObject</a></li><li data-type='method'><a href="Client.html#deleteObject">deleteObject</a></li><li data-type='method'><a href="Client.html#errorResponse">errorResponse</a></li><li data-type='method'><a href="Client.html#getAlarmSummary">getAlarmSummary</a></li><li data-type='method'><a href="Client.html#getEnrollmentSummary">getEnrollmentSummary</a></li><li data-type='method'><a href="Client.html#getEventInformation">getEventInformation</a></li><li data-type='method'><a href="Client.html#iHaveResponse">iHaveResponse</a></li><li data-type='method'><a href="Client.html#readFile">readFile</a></li><li data-type='method'><a href="Client.html#readRange">readRange</a></li><li data-type='method'><a href="Client.html#removeListElement">removeListElement</a></li><li data-type='method'><a href="Client.html#sendBvlc">sendBvlc</a></li><li data-type='method'><a href="Client.html#simpleAckResponse">simpleAckResponse</a></li><li data-type='method'><a href="Client.html#subscribeCov">subscribeCov</a></li><li data-type='method'><a href="Client.html#subscribeProperty">subscribeProperty</a></li><li data-type='method'><a href="Client.html#unconfirmedEventNotification">unconfirmedEventNotification</a></li><li data-type='method'><a href="Client.html#unconfirmedPrivateTransfer">unconfirmedPrivateTransfer</a></li><li data-type='method'><a href="Client.html#writeFile">writeFile</a></li></ul></li></ul><h3>Events</h3><ul><li><a href="bacnet.html#.event:error">error</a></li><li><a href="bacnet.html#.event:iAm">iAm</a></li><li><a href="bacnet.html#.event:timeSync">timeSync</a></li><li><a href="bacnet.html#.event:whoIs">whoIs</a></li></ul><h3>Global</h3><ul><li><a href="global.html#ApplicationTag">ApplicationTag</a></li><li><a href="global.html#EnableDisable">EnableDisable</a></li><li><a href="global.html#MaxApduLengthAccepted">MaxApduLengthAccepted</a></li><li><a href="global.html#MaxSegmentsAccepted">MaxSegmentsAccepted</a></li><li><a href="global.html#ReinitializedState">ReinitializedState</a></li><li><a href="global.html#usc">usc</a></li></ul>
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<h1 class="page-title">services/time-sync.js</h1>
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<pre class="prettyprint source linenums"><code>/**
* The timeSync event represents the request to synchronize the local time to
* the received time.
*
* @event bacnet.timeSync
* @param {date} dateTime - The time to be synchronized to.
*
* @example
* const bacnet = require('node-bacnet');
* const client = new bacnet();
*
* client.on('timeSync', (msg) => {
* console.log(
* 'address: ', msg.header.address,
* ' - dateTime: ', msg.payload.dateTime
* );
* });
*/
'use strict';
const baAsn1 = require('../asn1');
const baEnum = require('../enum');
module.exports.encode = (buffer, time) => {
baAsn1.encodeApplicationDate(buffer, time);
baAsn1.encodeApplicationTime(buffer, time);
};
module.exports.decode = (buffer, offset, length) => {
let len = 0;
let result;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
if (result.tagNumber !== baEnum.ApplicationTag.DATE) {
return undefined;
}
const date = baAsn1.decodeDate(buffer, offset + len);
len += date.len;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
if (result.tagNumber !== baEnum.ApplicationTag.TIME) {
return undefined;
}
const time = baAsn1.decodeBacnetTime(buffer, offset + len);
len += time.len;
return {
len,
value: new Date(date.value.getFullYear(), date.value.getMonth(), date.value.getDate(), time.value.getHours(), time.value.getMinutes(), time.value.getSeconds(), time.value.getMilliseconds())
};
};
</code></pre>
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