led_strip.h

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#pragma once
 
#ifdef USE_ESP32
 
#include "esphome/components/light/addressable_light.h"
#include "esphome/components/light/channel_colors.h"
#include "esphome/components/light/light_output.h"
#include "esphome/core/color.h"
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
 
#include <driver/gpio.h>
#include <esp_err.h>
#include <esp_idf_version.h>
#include <driver/rmt_tx.h>
 
namespace esphome::esp32_rmt_led_strip {
 
struct LedParams {
  rmt_symbol_word_t bit0;
  rmt_symbol_word_t bit1;
  rmt_symbol_word_t reset;
};
 
class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {
 public:
  void setup() override;
  void write_state(light::LightState *state) override;
  float get_setup_priority() const override;
 
  int32_t size() const override { return this->num_leds_; }
  light::LightTraits get_traits() override { return this->channel_colors_.traits(); }
 
  void set_pin(uint8_t pin) { this->pin_ = pin; }
  void set_inverted(bool inverted) { this->invert_out_ = inverted; }
  void set_num_leds(uint16_t num_leds) { this->num_leds_ = num_leds; }
  void set_channel_colors(light::ChannelColors channel_colors) { this->channel_colors_ = channel_colors; }
  void set_use_dma(bool use_dma) { this->use_dma_ = use_dma; }
  void set_use_psram(bool use_psram) { this->use_psram_ = use_psram; }
 
  void set_max_refresh_rate(uint32_t interval_us) { this->max_refresh_rate_ = interval_us; }
 
  void set_led_params(uint32_t bit0_high, uint32_t bit0_low, uint32_t bit1_high, uint32_t bit1_low,
                      uint32_t reset_time_high, uint32_t reset_time_low);
 
  void set_rmt_symbols(uint32_t rmt_symbols) { this->rmt_symbols_ = rmt_symbols; }
 
  void clear_effect_data() override {
    if (this->effect_data_ != nullptr)
      memset(this->effect_data_, 0, this->num_leds_);
  }
 
  void dump_config() override;
 
 protected:
  light::ESPColorView get_view_internal(int32_t index) const override {
    return this->channel_colors_.view(this->buf_, this->effect_data_, index, &this->correction_);
  }
 
  size_t get_buffer_size_() const { return this->num_leds_ * this->channel_colors_.bytes_per_led(); }
 
  uint8_t *buf_{nullptr};
  uint8_t *effect_data_{nullptr};
  LedParams params_;
  rmt_channel_handle_t channel_{nullptr};
  rmt_encoder_handle_t encoder_{nullptr};
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
  uint8_t *rmt_buf_{nullptr};
#else
  rmt_symbol_word_t *rmt_buf_{nullptr};
#endif
  uint32_t rmt_symbols_{48};
  uint8_t pin_;
  uint16_t num_leds_;
  bool use_dma_{false};
  bool use_psram_{false};
  bool invert_out_{false};
 
  light::ChannelColors channel_colors_{0, 1, 2, light::ChannelColors::NO_WHITE};
 
  uint32_t last_refresh_{0};
  uint32_t max_refresh_rate_{0};
};
 
}  // namespace esphome::esp32_rmt_led_strip
 
#endif  // USE_ESP32