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54 lines
2.3 KiB
ReStructuredText
54 lines
2.3 KiB
ReStructuredText
Safe Mode
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=========
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.. seo::
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:description: Instructions for setting up ESPHome's Safe Mode to help recover from repeated boot failures.
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:image: system-update.svg
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Sometimes hardware and/or software doesn't behave as expected. ESPHome supports a "safe mode" to help recover from
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repeated boot failures/reboot loops. After a specified number (the default is ten) of boot failures, the safe mode may
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be invoked; in this mode, all components are disabled except serial logging, network (Wi-Fi or Ethernet) and the OTA
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component(s). In most cases, this will temporarily mitigate the issue, allowing you a chance to correct it, perhaps by
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uploading a new binary.
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You can also force the invocation of safe mode by configuring a dedicated :doc:`button</components/button/safe_mode>`
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or :doc:`switch</components/switch/safe_mode>` component and/or by repeatedly pressing the reset button on the board
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for ``num_attempts`` times (see below).
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.. code-block:: yaml
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# Example configuration entry
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safe_mode:
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.. _safe_mode-configuration_variables:
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Configuration variables:
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------------------------
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- **disabled** (*Optional*, boolean): Set to ``true`` to disable safe_mode. :doc:`/components/ota/index` automatically
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sets up safe mode; this allows disabling it if/when it is not wanted.
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- **boot_is_good_after** (*Optional*, :ref:`config-time`): The amount of time after which the boot is considered successful.
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Defaults to ``1min``.
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- **num_attempts** (*Optional*, int): The number of failed boot attempts which must occur before invoking safe mode.
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Defaults to ``10``.
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- **reboot_timeout** (*Optional*, :ref:`config-time`): The amount of time to wait before rebooting when in safe mode.
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Defaults to ``5min``.
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- **on_safe_mode** (*Optional*, :ref:`Automation <automation>`): An action to be performed once when safe mode is invoked.
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.. warning::
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The ``on_safe_mode`` :ref:`automation <automation>` is intended for use by recovery actions **only**.
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As mentioned above, in safe mode, all components are disabled except serial logging, network (Wi-Fi or Ethernet)
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and OTA component(s).
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**All other components (for example, displays and sensors) are disabled and cannot be used.**
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See Also
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--------
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- :apiref:`safe_mode/safe_mode.h`
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- :doc:`/components/button/safe_mode`
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- :doc:`/components/switch/safe_mode`
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- :ghedit:`Edit`
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