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127 lines
4.4 KiB
127 lines
4.4 KiB
#pragma once
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#include "../common.h"
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#include "../light_hal.h"
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#include "color_instant_handler.h"
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#include "color_transition_handler.h"
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#include "esphome/components/ledc/ledc_output.h"
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namespace esphome {
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namespace yeelight {
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namespace bs2 {
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/**
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* A LightOutput class for the Yeelight Bedside Lamp 2.
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*
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* The function of this class is to translate a required light state
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* into actual physicial GPIO output signals to drive the device's LED
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* circuitry. It forms the glue between the physical device and the
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* logical light color input.
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*/
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class YeelightBS2LightOutput : public Component, public light::LightOutput {
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public:
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void set_parent(LightHAL *light) { light_ = light; }
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/**
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* Returns a LightTraits object, which is used to explain to the outside
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* world (e.g. Home Assistant) what features are supported by this device.
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*/
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light::LightTraits get_traits() override
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{
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auto traits = light::LightTraits();
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traits.set_supports_rgb(true);
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traits.set_supports_color_temperature(true);
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traits.set_supports_brightness(true);
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traits.set_supports_rgb_white_value(false);
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traits.set_supports_color_interlock(true);
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traits.set_min_mireds(MIRED_MIN);
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traits.set_max_mireds(MIRED_MAX);
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return traits;
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}
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void add_on_state_callback(std::function<void(light::LightColorValues)> &&callback) {
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state_callback_.add(std::move(callback));
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}
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/**
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* Applies a requested light state to the physicial GPIO outputs.
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*/
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void write_state(light::LightState *state)
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{
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auto values = state->current_values;
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// The color must either be set instantly, or the color is
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// transitioning to an end color. The transition handler will do its
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// own inspection to see if a transition is currently active or not.
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// Based on the outcome, use either the instant or transition handler.
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GPIOOutputs *delegate;
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if (transition_handler_->set_light_color_values(values)) {
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delegate = transition_handler_;
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} else {
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instant_handler_->set_light_color_values(values);
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delegate = instant_handler_;
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}
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// Note: one might think that it is more logical to turn on the LED
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// circuitry master switch after setting the individual channels,
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// but this is the order that was used by the original firmware. I
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// tried to stay as close as possible to the original behavior, so
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// that's why these GPIOs are turned on at this point.
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if (values.get_state() != 0)
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light_->turn_on();
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// Apply the current GPIO output levels from the selected handler.
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light_->set_rgbw(
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delegate->red,
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delegate->green,
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delegate->blue,
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delegate->white
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);
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if (values.get_state() == 0)
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light_->turn_off();
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state_callback_.call(values);
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}
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protected:
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LightHAL *light_;
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GPIOOutputs *transition_handler_;
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GPIOOutputs *instant_handler_ = new ColorInstantHandler();
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CallbackManager<void(light::LightColorValues)> state_callback_{};
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friend class YeelightBS2LightState;
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/**
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* Called by the YeelightBS2LightState class, to set the object that can be
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* used to access the protected LightTransformer data from the LightState
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* object.
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*/
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void set_transformer_inspector(LightStateTransformerInspector *exposer) {
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transition_handler_ = new ColorTransitionHandler(exposer);
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}
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};
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/**
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* This custom LightState class is used to provide access to the protected
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* LightTranformer information in the LightState class.
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*
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* This class is used by the ColorTransitionHandler class to inspect if
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* an ongoing light color transition is active in a LightState object.
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*/
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class YeelightBS2LightState : public light::LightState, public LightStateTransformerInspector
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{
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public:
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YeelightBS2LightState(const std::string &name, YeelightBS2LightOutput *output) : light::LightState(name, output) {
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output->set_transformer_inspector(this);
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}
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bool is_active() { return transformer_ != nullptr; }
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bool is_transition() { return transformer_->is_transition(); }
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light::LightColorValues get_end_values() { return transformer_->get_end_values(); }
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float get_progress() { return transformer_->get_progress(); }
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};
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} // namespace bs2
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} // namespace yeelight
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} // namespace esphome
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