..
   Copyright 2023-2026 AVSystem <avsystem@avsystem.com>
   AVSystem Anjay Lite LwM2M SDK
   All rights reserved.

   Licensed under AVSystem Anjay Lite LwM2M Client SDK - Non-Commercial License.
   See the attached LICENSE file for details.

Introduction
============

**Anjay Lite** is a library implementing the *OMA Lightweight Machine to
Machine* (LwM2M) protocol, including essential CoAP functionality.

This project is developed and maintained by
`AVSystem <https://www.avsystem.com>`_.

Supported protocol version
--------------------------

This implementation is based on the following specification documents:

- *Lightweight Machine to Machine Technical Specification: Core*
   Document: `OMA-TS-LightweightM2M_Core-V1_2_2-20240613-A <https://www.openmobilealliance.org/release/LightweightM2M/V1_2_2-20240613-A/OMA-TS-LightweightM2M_Core-V1_2_2-20240613-A.pdf>`_

- *Lightweight Machine to Machine Technical Specification: Transport Bindings*
   Document: `OMA-TS-LightweightM2M_Transport-V1_2_2-20240613-A <https://www.openmobilealliance.org/release/lightweightm2m/V1_2_2-20240613-A/OMA-TS-LightweightM2M_Transport-V1_2_2-20240613-A.pdf>`_

Supported features
------------------

Features currently supported
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

- **Support for both LwM2M 1.1 and 1.2**
- **Interfaces**
  - Bootstrap support
  - Client Registration support
  - Device Management and Service Enablement support
  - Information Reporting support
- **Transport**
  - Support for UDP Binding
- **Content Formats**
  - **Input**: TLV, PlainText, Opaque, CBOR, SenML CBOR, LwM2M CBOR
  - **Output**: PlainText, Opaque, CBOR, SenML CBOR, LwM2M CBOR
- **Preimplemented LwM2M Objects**
  - Security (``/0``)
  - Server (``/1``)
  - Device (``/3``)
  - Firmware Update (``/5``)

Technical information
---------------------

Anjay Lite is implemented in standards-compliant C99 and depends only on widely
available functions from the standard C library.
This makes it suitable for a wide range of platforms, including bare-metal
systems without an operating system.
While its core does not rely on OS-specific features, it can be compiled
with POSIX networking and time interfaces out of the box.