Namespace downlink

Example

import * as message from 'jooby-codec/mtx1/message/downlink';
import * as frame from 'jooby-codec/mtx1/utils/frame.js';
import * as downlinkCommands from 'jooby-codec/mtx1/commands/downlink';
import getHexFromBytes from 'jooby-codec/utils/getHexFromBytes.js';
import * as frameTypes from 'jooby-codec/mtx1/constants/frameTypes.js';

const aesKey = [...Array(16).keys()];
const messageId = 10;

const commands = [
    {
        id: downlinkCommands.setDateTime.id,
        parameters: {
            isSummerTime: false,
            seconds: 55,
            minutes: 31,
            hours: 18,
            day: 2,
            date: 19,
            month: 2,
            year: 24
        }
    }
];
const messageBytes = message.toBytes(
    commands,
    {
        messageId,
        accessLevel: downlinkCommands.setDateTime.accessLevel,
        aesKey
    }
);

console.log('message encoded:', JSON.stringify(messageBytes));
// output:
[10,19,237,116,10,174,74,186,200,66,196,27,231,245,13,60,40,132]

console.log('message encoded in HEX:', getHexFromBytes(messageBytes));
// output:
'0a 13 ed 74 0a ae 4a ba c8 42 c4 1b e7 f5 0d 3c 28 84'

const frameBytes = frame.toBytes(
    messageBytes,
    {
        type: frameTypes.DATA_REQUEST,
        source: 0xffff,
        destination: 0xaaaa
    }
);

console.log('frame encoded:', frameBytes);
// output:
[126,80,170,170,255,255,10,125,51,237,116,10,174,74,186,200,66,196,27,231,245,13,60,40,132,97,187,126]

console.log('frame encoded in HEX:', getHexFromBytes(frameBytes));
// output:
'7e 50 aa aa ff ff 0a 7d 33 ed 74 0a ae 4a ba c8 42 c4 1b e7 f5 0d 3c 28 84 61 bb 7e'


// decode message back from bytes
const parsedMessage = message.fromBytes(messageBytes, {aesKey});

console.log('parsed message:', parsedMessage);
// output:
{
    messageId: 3,
    accessLevel: 3,
    commands: [
        {
            id: 8,
            name: 'setDateTime',
            headerSize: 2,
            bytes: [Array],
            parameters: [Object]
        }
    ],
    bytes: [3,19,237,116,10,174,74,186,200,66,196,27,231,245,13,60,40,132],
    lrc: {received: 119, calculated: 119}
}

// decode message back from frame
const parsedFrame = frame.fromBytes(frameBytes);

console.log('parsedFrame:', parsedFrame);
// output:
{
    bytes: [10,19,237,116,10,174,74,186,200,66,196,27,231,245,13,60,40,132],
    crc: {calculated: 47969, received: 47969},
    header: {type: 80, destination: 43690, source: 65535}
}

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

    console.log('parsedMessage2:', parsedMessage2);
    // output:
    {
        messageId: 10,
        accessLevel: 3,
        commands: [
            {
                id: 8,
                name: 'setDateTime',
                headerSize: 2,
                bytes: [Array],
                parameters: [Object]
            }
        ],
        bytes: [10,19,237,116,10,174,74,186,200,66,196,27,231,245,13,60,40,132],
        lrc: {received: 119, calculated: 119}
    }
}
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