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https://github.com/project-chip/connectedhomeip-doc

Doxygen output from project-chip/connectedhomeip
https://github.com/project-chip/connectedhomeip-doc

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Doxygen output from project-chip/connectedhomeip

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README 

          



  

    

    



    Documentation links — Matter  documentation

  

  

  

  

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Documentation links#






Matter#



Builds


Builds


Android

Ameba

ASR

BouffaloLab

Darwin

TI CC26X2X7

TI CC32XX

EFR32

ESP32

Infineon

i.MX Linux

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nRF Connect SDK

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Tests

Unit / Integration Tests

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Documentation Build



About#



Matter (formerly Project CHIP) creates more connections between more objects,

simplifying development for manufacturers and increasing compatibility for

consumers, guided by the Connectivity Standards Alliance.



What is Matter?#



Matter is a unified, open-source application-layer connectivity standard built

to enable developers and device manufacturers to connect and build reliable, and

secure ecosystems and increase compatibility among connected home devices. It is

built with market-proven technologies using Internet Protocol (IP) and is

compatible with Thread and Wi-Fi network transports. Matter was developed by a

Working Group within the Connectivity Standards Alliance (Alliance). This

Working Group develops and promotes the adoption of the Matter standard, a

royalty-free connectivity standard to increase compatibility among smart home

products, with security as a fundamental design tenet. The vision that led major

industry players to come together to build Matter is that smart connectivity

should be simple, reliable, and interoperable.


Matter simplifies development for manufacturers and increases compatibility for

consumers.


The standard was built around a shared belief that smart home devices should be

secure, reliable, and seamless to use. By building upon Internet Protocol (IP),

Matter enables communication across smart home devices, mobile apps, and cloud

services and defines a specific set of IP-based networking technologies for

device certification.


The Matter specification details everything necessary to implement a Matter

application and transport layer stack. It is intended to be used by implementers

as a complete specification.


The Alliance officially opened the Matter Working Group on January 17, 2020, and

the specification is

available

for adoption now.


Visit buildwithmatter.com to learn more and read

the latest news and updates about the project.



Project Overview#




Development Goals#



Matter is developed with the following goals and principles in mind:


Unifying: Matter is built with and on top of market-tested, existing

technologies.


Interoperable: The specification permits communication between any

Matter-certified device, subject to users’ permission.


Secure: The specification leverages modern security practices and protocols.


User Control: The end user controls authorization for interaction with

devices.


Federated: No single entity serves as a throttle or a single point of

failure for root of trust.


Robust: The set of protocols specifies a complete lifecycle of a device —

starting with the seamless out-of-box experience, through operational protocols,

to device and system management specifications required for proper function in

the presence of change.


Low Overhead: The protocols are practically implementable on low

compute-resource devices, such as MCUs.


Pervasive: The protocols are broadly deployable and accessible, by

leveraging IP and being implementable on low-capability devices.


Ecosystem-Flexible: The protocol is flexible enough to accommodate

deployment in ecosystems with differing policies.


Easy to Use: The protocol provides smooth, cohesive, integrated provisioning

and out-of-box experience.


Open: The Project’s design and technical processes are open and transparent

to the general public, including non-members wherever possible.



Architecture Overview#



Matter aims to build a universal IPv6-based communication protocol for smart

home devices. The protocol defines the application layer that will be deployed

on devices and the different link layers to help maintain interoperability. The

following diagram illustrates the normal operational mode of the stack:

Matter Architecture Overview


The architecture is divided into layers to help separate the different

responsibilities and introduce a good level of encapsulation among the various

pieces of the protocol stack. The vast majority of interactions flow through the

stack captured in the following Figure:


Matter Stack Architecture


    

  1. Application: High-order business logic of a device. For example, an

    application that is focused on lighting might contain logic to handle turning

    on/off the bulb as well as its color characteristics.
    2. 



    

  1. Data Model: The data layer corresponds to the data and verb elements that

    help support the functionality of the application. The Application operates

    on these data structures when there is an intent to interact with the device.
    2. 



    

  1. Interaction Model: The Interaction Model layer defines a set of

    interactions that can be performed between a client and server device. For

    example, reading or writing attributes on a server device would correspond to

    application behavior on the device. These interactions operate on the

    elements defined at the data model layer.
    2. 



    

  1. Action Framing: Once an action is constructed using the Interaction

    Model, it is serialized into a prescribed packed binary format to encode for

    network transmission.
    2. 



    

  1. Security: An encoded action frame is then sent down to the Security Layer

    to encrypt and sign the payload to ensure that data is secured and

    authenticated by both sender and receiver of a packet.
    2. 

  2. Message Framing & Routing: With an interaction encrypted and signed, the

    Message Layer constructs the payload format with required and optional header

    fields; which specify the message’s properties and some routing information.
    3. 



    

  1. IP Framing & Transport Management: After the final payload has been

    constructed, it is sent to the underlying transport protocol for IP

    management of the data.
    2. 




Current Status of Matter#



Matter’s design and technical processes are intended to be open and transparent

to the general public, including to Working Group non-members wherever possible.

The availability of this GitHub repository and its source code under an Apache

v2 license is an important and demonstrable step to achieving this commitment.

Matter endeavors to bring together the best aspects of market-tested

technologies and redeploy them as a unified and cohesive whole-system solution.

The overall goal of this approach is to bring the benefits of Matter to

consumers and manufacturers as quickly as possible. As a result, what you

observe in this repository is an implementation-first approach to the technical

specification, vetting integrations in practice. The Matter repository is

growing and evolving to implement the overall architecture. The repository

currently contains the security foundations, message framing and dispatch, and

an implementation of the interaction model and data model. The code examples

show simple interactions, and are supported on multiple transports – Wi-Fi and

Thread – starting with resource-constrained (i.e., memory, processing) silicon

platforms to help ensure Matter’s scalability.



How to Contribute#



We welcome your contributions to Matter. Read our contribution guidelines

here.



Building and Developing in Matter#



Instructions about how to build Matter can be found here .



Directory Structure#



The Matter repository is structured as follows:





File/Folder


Content



build


Build system support content and built output directories



build_overrides


Build system parameter customization for different platforms



config


Project configurations



credentials


Development and test credentials



docs


Documentation, including guides. Visit the Matter SDK documentation page to read it.



examples


Example firmware applications that demonstrate use of Matter



integrations


3rd party integrations



scripts


Scripts needed to work with the Matter repository



src


Implementation of Matter



third_party


3rd party code used by Matter



zzz_generated


ZAP generated template code - Revolving around cluster information



BUILD.gn


Build file for the GN build system



CODE_OF_CONDUCT.md


Code of conduct for Matter and contribution to it



CONTRIBUTING.md


Guidelines for contributing to Matter



LICENSE


Matter license file



REVIEWERS.md


PR reviewers



gn_build.sh


Build script for specific projects such as Android, EFR32, etc.



README.md


This file






License#



Matter is released under the Apache 2.0 license.



                

              



              

              

              

              

                

                  





                

              

            


            

            

              

                

                



  


  


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