hbridge_light_output.h

Go to the documentation of this file.

#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_supported_color_modes({light::ColorMode::COLD_WARM_WHITE});
    traits.set_min_mireds(153);
    traits.set_max_mireds(500);
    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->pina_pin_->set_level(this->pina_duty_);
      this->pinb_pin_->set_level(0);
      this->forward_direction_ = true;
    } else {  // Second LED Direction
      this->pina_pin_->set_level(0);
      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 {
    state->current_values_as_cwww(&this->pina_duty_, &this->pinb_duty_, false);
  }
 
 protected:
  output::FloatOutput *pina_pin_;
  output::FloatOutput *pinb_pin_;
  float pina_duty_ = 0;
  float pinb_duty_ = 0;
  bool forward_direction_ = false;
};
 
}  // namespace hbridge
}  // namespace esphome