Lwm2m-codec NPM

lwm2m-codec

A codec for lightweight M2M (LWM2M) data formats.

Documentation

Please visit the Wiki.

Overview

A codec for lightweight M2M (LWM2M) data formats.

Installation

$ npm install lwm2m-codec --save

Usage

TLV:

var lwCodec = require(lwm2m-codec);

lwCodec.encode('tlv', '/3303/0', { 5700: 31, 5701: 'c' });
lwCodec.encode('tlv', '/temperature/0', { 5700: 31, 5701: 'c' });
lwCodec.encode('tlv', '/temperature/0', { sensorValue: 31, units: 'c' });
// Buffer <0x08, 0x00, 0x0b, 0xe4, 0x16, 0x44, 0x41, 0xf8, 0x00, 0x00, 0xe1, 0x16, 0x45, 0x63>;

lwCodec.decode('tlv', '/3303/0', new Buffer ([0x08, 0x00, 0x0b, 0xe4, 0x16, 0x44, 0x41, 0xf8, 0x00, 0x00, 0xe1, 0x16, 0x45, 0x63]));
// { sensorValue: 31, units: 'c' }

JSON:

var lwCodec = require(lwm2m-codec);

lwCodec.encode('json', '/3303/0', { 5700: 31, 5701: 'c' });
lwCodec.encode('json', '/temperature/0', { 5700: 31, 5701: 'c' });
lwCodec.encode('json', '/temperature/0', { sensorValue: 31, units: 'c' });
// Buffer <7b 22 62 6e 22 3a 22 2f 33 33 30 33 2f 30 22 2c 22 65 22 3a 5b 7b 22 6e 22 3a 22 35 37 30 30 22 2c 22 76 22 3a 33 31 7d 2c 7b 22 6e 22 3a 22 35 37 30 31 22 2c 22 73 76 22 3a 22 63 22 7d 5d 7d 0d>;
// String {"bn":"/3303/0","e":[{"n":"5700","v":31},{"n":"5701","sv":"c"}]} 

lwCodec.decode('json', '/3303/0', new Buffer ([0x7b ,0x22 ,0x62 ,0x6e ,0x22 ,0x3a ,0x22 ,0x2f ,0x33 ,0x33 ,0x30 ,0x33 ,0x2f ,0x30 ,0x22 ,0x2c ,0x22 ,0x65 ,0x22 ,0x3a ,0x5b ,0x7b ,0x22 ,0x6e ,0x22 ,0x3a ,0x22 ,0x35 ,0x37 ,0x30 ,0x30 ,0x22 ,0x2c ,0x22 ,0x76 ,0x22 ,0x3a ,0x33 ,0x31 ,0x7d ,0x2c ,0x7b ,0x22 ,0x6e ,0x22 ,0x3a ,0x22 ,0x35 ,0x37 ,0x30 ,0x31 ,0x22 ,0x2c ,0x22 ,0x73 ,0x76 ,0x22 ,0x3a ,0x22 ,0x63 ,0x22 ,0x7d ,0x5d ,0x7d 
]));
// { sensorValue: 31, units: 'c' }