282 lines
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HTML
282 lines
16 KiB
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<title>Adding support for a new platform - Home Assistant</title>
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<meta name="description" content="Hints and tips for when you're adding a new platform to Home Assistant.">
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<span>Home Assistant</span>
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<h1 class="title indent">
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Adding support for a new platform
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</h1>
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<p>Components that interact with devices are called “<a href="https://github.com/home-assistant/home-assistant/blob/dev/homeassistant/helpers/entity_component.py">Entity Components</a>.” They are structured in core and platform logic, which means different brands can use the same logic to handle a light.</p>
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<p>For example, the built-in <code class="highlighter-rouge">switch</code> component consists of various platforms in <a href="https://github.com/home-assistant/home-assistant/tree/master/homeassistant/components/switch"><code class="highlighter-rouge">homeassistant/components/switch/</code></a>. The file <code class="highlighter-rouge">__init__.py</code> contains the core logic of all platforms and the <code class="highlighter-rouge">vendor_name.py</code> files contain only the relevant platform code.</p>
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<p>If you’re planning to add support for a new type of device to an existing component, you can get away with only writing platform logic. Have a look at how the component works with other platforms and create a similar file for the platform that you want to add:</p>
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<ul>
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<li><a href="/developers/platform_example_sensor">Example sensor platform</a>: hello world of platforms.</li>
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<li><a href="/developers/platform_example_light">Example light platform</a>: showing best practices.</li>
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</ul>
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<h3><a class="title-link" name="interfacing-with-devices" href="#interfacing-with-devices"></a> Interfacing with devices</h3>
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<p>One Home Assistant rule is that platform logic should never interface directly with devices. Instead, use a third-party Python 3 library. This way, Home Assistant can share code with the Python community and keep the project maintainable.</p>
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<p>To integrate the third-party library, create an <a href="https://github.com/home-assistant/home-assistant/blob/dev/homeassistant/helpers/entity.py">Entity class</a> for your device. Entities are Home Assistant’s representations of lights, switches, sensors, etc. and are derived from the <a href="https://github.com/home-assistant/home-assistant/blob/master/homeassistant/helpers/entity.py">Entity Abstract Class</a>. This abstract class contains logic for integrating most standard features into your entities, such as visibility, entity IDs, updates, and much more.</p>
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<h3><a class="title-link" name="requirements-and-dependencies" href="#requirements-and-dependencies"></a> Requirements and dependencies</h3>
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<p>Platforms can specify dependencies and requirements <a href="/developers/component_deps_and_reqs">the same way as components</a>:</p>
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<div class="language-python highlighter-rouge"><pre class="highlight"><code><span class="n">REQUIREMENTS</span> <span class="o">=</span> <span class="p">[</span><span class="s">'some-package==2.0.0'</span><span class="p">,</span> <span class="s">'some-other-package==2.5.0'</span><span class="p">]</span>
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<span class="n">DEPENDENCIES</span> <span class="o">=</span> <span class="p">[</span><span class="s">'mqtt'</span><span class="p">]</span>
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</code></pre>
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<div class='edit-github'><a href='https://github.com/home-assistant/home-assistant.github.io/tree/current/source/developers/add_new_platform.markdown'>Edit this page on GitHub</a></div>
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<h1 class="title delta">Development Guide</h1>
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<a href='/developers/'>Introduction </a>
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<ul>
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<li><a href='/developers/architecture/'>Architecture </a></li>
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<li><a href='/developers/architecture_components/'>Components </a></li>
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<li>
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<a href='/developers/development/'>Starting with Development </a>
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<li><a href='/developers/development_environment/'>Setting up Environment </a></li>
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<li><a href='/developers/development_submitting/'>Submit your Work </a></li>
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<li><a href='/developers/development_checklist/'>Checklist </a></li>
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<li><a href='/developers/development_guidelines/'>Style guidelines </a></li>
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<li><a href='/developers/development_testing/'>Testing </a></li>
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<li><a href='/developers/development_catching_up/'>Catching up with Reality </a></li>
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<li><a href='/developers/development_validation/'>Validation </a></li>
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</ul>
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</li>
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<li>
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<a href='/developers/development_101/'>Development 101 </a>
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<li><a href='/developers/development_hass_object/'>Hass object </a></li>
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<li><a href='/developers/development_events/'>Events </a></li>
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<li><a href='/developers/development_states/'>States </a></li>
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<li><a href='/developers/development_services/'>Services </a></li>
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<li><a href='/developers/development_config/'>Config </a></li>
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</ul>
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</li>
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<li>
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<a class='active' href='/developers/add_new_platform/'>Creating a new platform (to support a new device) </a>
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<ul>
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<li><a href='/developers/code_review_platform/'>Checklist creating a platform </a></li>
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<li><a href='/developers/platform_example_sensor/'>Example sensor platform </a></li>
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<li><a href='/developers/platform_example_light/'>Example light platform </a></li>
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</ul>
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</li>
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<li>
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<a href='/developers/creating_components/'>Adding a new component </a>
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<ul>
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<li><a href='/developers/code_review_component/'>Checklist creating a component </a></li>
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<li><a href='/developers/component_loading/'>Loading components </a></li>
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<li><a href='/developers/component_deps_and_reqs/'>Requirements & Dependencies </a></li>
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<li><a href='/developers/component_events/'>Handling events </a></li>
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<li><a href='/developers/component_states/'>States </a></li>
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<li><a href='/developers/component_visibility/'>Visibility </a></li>
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<li><a href='/developers/component_generic_discovery/'>Loading Platforms </a></li>
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<li><a href='/developers/component_discovery/'>Component Discovery </a></li>
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</ul>
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</li>
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<a href='/developers/intent/'>Intents (handling voice responses) </a>
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<ul>
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<li><a href='/developers/intent/firing/'>Firing intents </a></li>
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<li><a href='/developers/intent/handling/'>Handling intents </a></li>
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<li><a href='/developers/intent/conversation/'>Registering sentences </a></li>
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</ul>
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</li>
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<li>
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<a href='/developers/asyncio/'>Asynchronous Programming </a>
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<ul>
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<li><a href='/developers/asyncio_101/'>Introduction to asyncio </a></li>
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<li><a href='/developers/asyncio_categorizing_functions/'>Categorizing Functions </a></li>
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<li><a href='/developers/asyncio_working_with_async/'>Working with Async </a></li>
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<li><a href='/developers/asyncio_misc/'>Miscellaneous </a></li>
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</ul>
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</li>
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<a href='/developers/frontend/'>Frontend Development </a>
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<ul>
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<li><a href='/developers/frontend_add_card/'>Add State Card </a></li>
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<li><a href='/developers/frontend_add_more_info/'>Add More Info Dialog </a></li>
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<li><a href='/developers/frontend_creating_custom_panels/'>Add Custom Panels </a></li>
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<li><a href='/developers/frontend_creating_custom_ui/'>Add Custom UI </a></li>
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<li><a href='/developers/frontend_translation/'>Translation </a></li>
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</ul>
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<li>
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<a href='/developers/hassio/architecture/'>Hass.io architecture </a>
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<li><a href='/developers/hassio/debugging/'>Debugging Hass.io </a></li>
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</ul>
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<li>
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<a href='/developers/hassio/addon_development/'>Hass.io Add-on Development </a>
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<ul>
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<li><a href='/developers/hassio/addon_tutorial/'>Tutorial: Making your first add-on </a></li>
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<li><a href='/developers/hassio/addon_config/'>Configuration </a></li>
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<li><a href='/developers/hassio/addon_communication/'>Communication </a></li>
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<li><a href='/developers/hassio/addon_testing/'>Local Testing </a></li>
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</li>
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<li>
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<a href='/developers/api/'>API </a>
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<li><a href='https://dev-docs.home-assistant.io/en/dev/'>Python API </a></li>
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<li><a href='/developers/documentation/standards/'>Standards </a></li>
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<li><a href='/developers/helpers/'>Online helpers </a></li>
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