2022-02-19 09:49:25 +01:00
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BLE Client Text Sensor
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======================
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.. seo::
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:description: Fetch string values from BLE devices.
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:image: bluetooth.svg
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The ``ble_client`` component is a text sensor platform that can
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query BLE devices for specific values of service characteristics.
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For more information on BLE services and characteristics, see
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:doc:`/components/ble_client`.
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.. code-block:: yaml
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esp32_ble_tracker:
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ble_client:
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2024-07-15 01:40:55 +02:00
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- mac_address: XX:XX:XX:XX:XX:XX
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2022-02-19 09:49:25 +01:00
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id: itag_black
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text_sensor:
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- platform: ble_client
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ble_client_id: itag_black
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name: "Sensor Location"
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service_uuid: '180d'
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characteristic_uuid: '2a38'
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Configuration variables:
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------------------------
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- **ble_client_id** (**Required**, :ref:`config-id`): ID of the associated BLE client.
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- **service_uuid** (**Required**, UUID): UUID of the service on the device.
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- **characteristic_uuid** (**Required**, UUID): UUID of the service's characteristic to query.
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- **descriptor_uuid** (*Optional*, UUID): UUID of the characteristic's descriptor to query.
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- **id** (*Optional*, :ref:`config-id`): The ID to use for code generation, and for reference by dependent components.
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- **notify** (*Optional*, boolean): Instruct the server to send notifications for this
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characteristic. Defaults to ``false``.
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- **update_interval** (*Optional*, :ref:`config-time`): The interval to poll the device. Defaults to ``60s``.
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- All other options from :ref:`Text Sensor <config-text_sensor>`.
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Automations:
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- **on_notify** (*Optional*, :ref:`Automation <automation>`): An automation to
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perform when a notify message is received from the device. See :ref:`ble_text_sensor-on_notify`.
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BLE Sensor Automation
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---------------------
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.. _ble_text_sensor-on_notify:
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``on_notify``
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*************
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This automation is triggered when the device/server sends a notify message for
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a characteristic. The config variable *notify* must be true or this will have
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no effect.
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A variable ``x`` of type ``std::string`` is passed to the automation for use in lambdas.
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See Also
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--------
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- :doc:`/components/ble_client`
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- :doc:`/components/sensor/ble_client`
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- :ref:`sensor-filters`
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- :apiref:`ble_text_sensor/ble_text_sensor.h`
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- :ghedit:`Edit`
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