Namespace uplink

Example

import * as message from 'jooby-codec/mtx3/message/uplink';
import * as frame from 'jooby-codec/mtx1/utils/frame.js';
import getBytesFromHex from 'jooby-codec/utils/getBytesFromHex.js';

const aesKey = [...Array(16).keys()];

// a message with one getDeviceId command
const messageBytes = getBytesFromHex('0a13cf5fa5a836724fc97a0735f817d49651');
// the same message as a frame
const frameBytes = getBytesFromHex('7e51aaaaffff0a7d33cf5fa5a836724fc97a0735f817d49651fe547e');

const parsedMessage = message.fromBytes(messageBytes, {aesKey});

console.log('parsed message:', parsedMessage);
// output:
{
  messageId: 10,
  accessLevel: 3,
  commands: [
    {
      id: 5,
      name: 'getDeviceId',
      headerSize: 2,
      bytes: [Array],
      parameters: [Object]
    }
  ],
  bytes: [
    207, 95, 165, 168, 54, 114, 79, 201,
    122, 7, 53, 248, 23, 212, 150, 81
  ],
  lrc: { received: 71, calculated: 71 }
}

const parsedFrame = frame.fromBytes(frameBytes);

console.log('parsed frame:', parsedFrame);
// output:
{
  bytes: [
    126, 81, 170, 170, 255, 255, 10, 125,
    51, 207, 95, 165, 168, 54, 114, 79,
    201, 122, 7, 53, 248, 23, 212, 150,
    81, 254, 84, 126
  ],
  payload: [
    10, 19, 207, 95, 165, 168, 54, 114,
    79, 201, 122, 7, 53, 248, 23, 212,
    150, 81
  ],
  crc: { calculated: 21758, received: 21758 },
  header: {
    type: 81,
    typeName: 'DATA_RESPONSE',
    destination: 43690,
    source: 65535
  }
}

// parsed successfully
if ( 'bytes' in parsedFrame ) {
    const parsedMessage2 = message.fromBytes(parsedFrame.payload, {aesKey});

    if ( JSON.stringify(parsedMessage) === JSON.stringify(parsedMessage2) ) {
        console.log('correct message');
    } else {
        throw new Error('parsedMessage and parsedMessage2 should be identical!');
    }
}
Copy