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* Many example yaml tidy-ups * Update components/sensor/hlw8012.rst --------- Co-authored-by: Keith Burzinski <kbx81x@gmail.com>
75 lines
2.0 KiB
ReStructuredText
75 lines
2.0 KiB
ReStructuredText
Custom UART Device
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==================
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.. seo::
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:description: Instructions for setting up Custom C++ UART devices with ESPHome.
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:image: language-cpp.svg
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:keywords: C++, Custom
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.. warning::
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Custom components are deprecated, not recommended for new configurations and will be removed from ESPHome in a
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future release. Please look at creating a real ESPHome component and "importing" it into your configuration with
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:doc:`/components/external_components`.
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You can find some basic documentation on creating your own components at :ref:`contributing_to_esphome`.
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.. warning::
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While we try to keep the ESPHome YAML configuration options as stable as possible, the ESPHome API is less
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stable. If something in the APIs needs to be changed in order for something else to work, we will do so.
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Lots of devices communicate using the UART protocol. If you want to integrate
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a device into ESPHome that uses this protocol you can pretty much use almost
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all Arduino-based code because ESPHome has a nice abstraction over the UART bus.
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See the other custom component guides for how to register components and make
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them publish values.
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.. code-block:: cpp
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#include "esphome.h"
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class MyCustomComponent : public Component, public UARTDevice {
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public:
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MyCustomComponent(UARTComponent *parent) : UARTDevice(parent) {}
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void setup() override {
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// nothing to do here
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}
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void loop() override {
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// Use Arduino API to read data, for example
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String line = readString();
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int i = parseInt();
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while (available()) {
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char c = read();
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}
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// etc
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}
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};
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And in YAML:
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.. code-block:: yaml
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# Example configuration entry
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esphome:
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includes:
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- my_custom_component.h
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uart:
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id: uart_bus
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tx_pin: GPIOXX
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rx_pin: GPIOXX
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baud_rate: 9600
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custom_component:
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- lambda: |-
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auto my_custom = new MyCustomComponent(id(uart_bus));
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return {my_custom};
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See Also
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--------
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- :ghedit:`Edit`
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