es7210.h

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#pragma once
 
#include <array>
 
#include "esphome/components/audio_adc/audio_adc.h"
#include "esphome/components/i2c/i2c.h"
#include "esphome/core/component.h"
 
#include "es7210_const.h"
 
namespace esphome::es7210 {
 
enum ES7210BitsPerSample : uint8_t {
  ES7210_BITS_PER_SAMPLE_16 = 16,
  ES7210_BITS_PER_SAMPLE_18 = 18,
  ES7210_BITS_PER_SAMPLE_20 = 20,
  ES7210_BITS_PER_SAMPLE_24 = 24,
  ES7210_BITS_PER_SAMPLE_32 = 32,
};
 
class ES7210 final : public audio_adc::AudioAdc, public Component, public i2c::I2CDevice {
  /* Class for configuring an ES7210 ADC for microphone input.
   * Based on code from:
   * - https://github.com/espressif/esp-bsp/ (accessed 20241219)
   * - https://github.com/espressif/esp-adf/ (accessed 20241219)
   */
 public:
  void setup() override;
  void dump_config() override;
 
  void set_bits_per_sample(ES7210BitsPerSample bits_per_sample) { this->bits_per_sample_ = bits_per_sample; }
  bool set_mic_gain(float mic_gain) override;
  bool set_channel_gain(uint8_t channel, float gain);
  void set_sample_rate(uint32_t sample_rate) { this->sample_rate_ = sample_rate; }
  void set_tdm(bool enable_tdm) { this->enable_tdm_ = enable_tdm; }
 
  float mic_gain() override { return this->channel_gains_[0]; };
 
 protected:
  bool es7210_update_reg_bit_(uint8_t reg_addr, uint8_t update_bits, uint8_t data);
 
  uint8_t es7210_gain_reg_value_(float mic_gain);
 
  bool configure_i2s_format_();
  bool configure_mic_gain_();
  bool configure_sample_rate_();
 
  bool setup_complete_{false};
  bool enable_tdm_{false};
  std::array<float, 4> channel_gains_{{0.0f, 0.0f, 0.0f, 0.0f}};
  ES7210BitsPerSample bits_per_sample_{ES7210_BITS_PER_SAMPLE_16};
  uint32_t sample_rate_{0};
};
 
}  // namespace esphome::es7210