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47 lines
1.4 KiB
ReStructuredText
47 lines
1.4 KiB
ReStructuredText
UART Switch
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===========
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.. seo::
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:description: Instructions for setting up UART switches in ESPHome that can output arbitrary UART sequences when activated.
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:image: uart.svg
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The ``uart`` switch platform allows you to send a pre-defined sequence of bytes on a
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:doc:`UART bus </components/uart>` when triggered.
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.. code-block:: yaml
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# Example configuration entry
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uart:
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baud_rate: 9600
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tx_pin: D0
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switch:
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- platform: uart
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name: "UART String Output"
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data: 'DataToSend'
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- platform: uart
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name: "UART Bytes Output"
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data: [0xDE, 0xAD, 0xBE, 0xEF]
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- platform: uart
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name: "UART Recurring Output"
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data: [0xDE, 0xAD, 0xBE, 0xEF]
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send_every: 1s
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Configuration variables:
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------------------------
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- **data** (**Required**, string or list of bytes): The data to send via UART. Either an ASCII string
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or a list of bytes.
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- **name** (**Required**, string): The name for the switch.
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- **uart_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the UART hub.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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- **send_every** (*Optional*, :ref:`config-time`): Sends recurring data instead of sending once.
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- All other options from :ref:`Switch <config-switch>`.
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See Also
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--------
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- :doc:`/components/uart`
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- :apiref:`uart/switch/uart_switch.h`
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- :ghedit:`Edit`
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