esphome/esphome/components/hbridge/hbridge_light_output.h
Daniel Hyles fc01a70b65
Hbridge christmas light (#1251)
* Hbridge Christmas light component

Can be used for Christmas lights that use 2 wires to run 2 different strings of lights using a hbridge driver.

* Add Test

NOTE: I am unable to test this via the docker image

* Update hbridge_light_output.h

* Update hbridge_light_output.h

* Update hbridge_light_output.h

* Update light.py

* Fixed duty as white value bug fixed

* lint changes

* Name case change

* thanks lint
2020-11-08 14:46:34 +13:00

76 lines
2.4 KiB
C++

#pragma once
#include "esphome/core/component.h"
#include "esphome/components/output/float_output.h"
#include "esphome/components/light/light_output.h"
#include "esphome/core/log.h"
namespace esphome {
namespace hbridge {
// Using PollingComponent as the updates are more consistent and reduces flickering
class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
public:
HBridgeLightOutput() : PollingComponent(1) {}
void set_pina_pin(output::FloatOutput *pina_pin) { pina_pin_ = pina_pin; }
void set_pinb_pin(output::FloatOutput *pinb_pin) { pinb_pin_ = pinb_pin; }
light::LightTraits get_traits() override {
auto traits = light::LightTraits();
traits.set_supports_brightness(true); // Dimming
traits.set_supports_rgb(false);
traits.set_supports_rgb_white_value(true); // hbridge color
traits.set_supports_color_temperature(false);
return traits;
}
void setup() override { this->forward_direction_ = false; }
void update() override {
// This method runs around 60 times per second
// We cannot do the PWM ourselves so we are reliant on the hardware PWM
if (!this->forward_direction_) { // First LED Direction
this->pinb_pin_->set_level(this->duty_off_);
this->pina_pin_->set_level(this->pina_duty_);
this->forward_direction_ = true;
} else { // Second LED Direction
this->pina_pin_->set_level(this->duty_off_);
this->pinb_pin_->set_level(this->pinb_duty_);
this->forward_direction_ = false;
}
}
float get_setup_priority() const override { return setup_priority::HARDWARE; }
void write_state(light::LightState *state) override {
float bright;
state->current_values_as_brightness(&bright);
state->set_gamma_correct(0);
float red, green, blue, white;
state->current_values_as_rgbw(&red, &green, &blue, &white);
if ((white / bright) > 0.55) {
this->pina_duty_ = (bright * (1 - (white / bright)));
this->pinb_duty_ = bright;
} else if (white < 0.45) {
this->pina_duty_ = bright;
this->pinb_duty_ = white;
} else {
this->pina_duty_ = bright;
this->pinb_duty_ = bright;
}
}
protected:
output::FloatOutput *pina_pin_;
output::FloatOutput *pinb_pin_;
float pina_duty_ = 0;
float pinb_duty_ = 0;
float duty_off_ = 0;
bool forward_direction_ = false;
};
} // namespace hbridge
} // namespace esphome