Custom Cover

Warning

Custom Components are deprecated, not recommended for new configurations and will be removed from ESPHome in a future release. Please look at creating a real ESPHome component and “importing” it into your configuration with External Components.

You can find some basic documentation on creating your own components at Contributing to ESPHome.

Warning

While we try to keep the ESPHome YAML configuration options as stable as possible, the ESPHome API is less stable. If something in the APIs needs to be changed in order for something else to work, we will do so.

This component can be used to create custom covers in ESPHome using the C++ (Arduino) API.

Please first read Custom Sensor Component guide, the same principles apply here.

The example below is an example of a custom cover - all covers must override two methods:

  • get_traits: This should return a CoverTraits object representing the capabilities of the cover.

  • control: This receives a CoverCall object that contains the command the user tried to set.

#include "esphome.h"

class MyCustomCover : public Component, public Cover {
 public:
  void setup() override {
    // This will be called by App.setup()
    pinMode(5, INPUT);
  }
  CoverTraits get_traits() override {
    auto traits = CoverTraits();
    traits.set_is_assumed_state(false);
    traits.set_supports_position(true);
    traits.set_supports_tilt(false);
    traits.set_supports_stop(true);
    return traits;
  }
  void control(const CoverCall &call) override {
    // This will be called every time the user requests a state change.
    if (call.get_position().has_value()) {
      float pos = *call.get_position();
      // Write pos (range 0-1) to cover
      // ...

      // Publish new state
      this->position = pos;
      this->publish_state();
    }
    if (call.get_stop()) {
      // User requested cover stop
    }
  }
};

(Store this file in your configuration directory, for example my_cover.h)

And in YAML:

# Example configuration entry
esphome:
  includes:
    - my_cover.h

cover:
- platform: custom
  lambda: |-
    auto my_custom_cover = new MyCustomCover();
    App.register_component(my_custom_cover);
    return {my_custom_cover};

  covers:
    - name: "My Custom Cover"

Configuration variables:

  • lambda (Required, lambda): The lambda to run for instantiating the cover(s).

  • covers (Required, list): A list of covers to initialize. The length here must equal the number of items in the return statement of the lambda.

    • All options from Cover.

See Cover

See Also