50 lines
1.4 KiB
ReStructuredText
50 lines
1.4 KiB
ReStructuredText
Status LED
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==========
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.. seo::
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:description: Instructions for setting up status LEDs in esphomelib to monitor the status of an ESP.
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:image: led-on.png
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The ``status_led`` hooks into all esphomelib components and can indicate the status of
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the device. Specifically, it will:
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- Blink slowly (about every second) when a **warning** is active. Warnings are active when for
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example reading a sensor value fails temporarily or the WiFi/MQTT connections are disrupted.
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- Blink quickly (multiple times per second) when an **error** is active. Errors indicate that
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esphomelib has found an error while setting up. In most cases, esphomelib will still try to
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recover from the error and continue with all other operations.
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- Stay off otherwise.
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.. code-block:: yaml
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# Example configuration entry
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status_led:
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pin: GPIO2
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Configuration variables:
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------------------------
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- **pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): The
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GPIO pin to operate the status LED on.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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.. note::
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If your LED is in an active-LOW mode (when it's on if the output is enabled), use the
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``inverted`` option of the :ref:`Pin Schema <config-pin_schema>`:
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.. code-block:: yaml
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status_led:
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pin:
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number: D0
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inverted: True
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See Also
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--------
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- :apiref:`status_led.h`
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- :ghedit:`Edit`
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.. disqus::
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