62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
#pragma once
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#include "esphome/components/audio_adc/audio_adc.h"
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#include "esphome/components/i2c/i2c.h"
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#include "esphome/core/component.h"
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#include "es7210_const.h"
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namespace esphome {
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namespace es7210 {
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enum ES7210BitsPerSample : uint8_t {
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ES7210_BITS_PER_SAMPLE_16 = 16,
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ES7210_BITS_PER_SAMPLE_18 = 18,
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ES7210_BITS_PER_SAMPLE_20 = 20,
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ES7210_BITS_PER_SAMPLE_24 = 24,
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ES7210_BITS_PER_SAMPLE_32 = 32,
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};
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class ES7210 : public audio_adc::AudioAdc, public Component, public i2c::I2CDevice {
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/* Class for configuring an ES7210 ADC for microphone input.
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* Based on code from:
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* - https://github.com/espressif/esp-bsp/ (accessed 20241219)
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* - https://github.com/espressif/esp-adf/ (accessed 20241219)
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*/
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public:
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void setup() override;
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float get_setup_priority() const override { return setup_priority::DATA; }
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void dump_config() override;
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void set_bits_per_sample(ES7210BitsPerSample bits_per_sample) { this->bits_per_sample_ = bits_per_sample; }
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bool set_mic_gain(float mic_gain) override;
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void set_sample_rate(uint32_t sample_rate) { this->sample_rate_ = sample_rate; }
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float mic_gain() override { return this->mic_gain_; };
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protected:
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/// @brief Updates an I2C registry address by modifying the current state
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/// @param reg_addr I2C register address
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/// @param update_bits Mask of allowed bits to be modified
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/// @param data Bit values to be written
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/// @return True if successful, false otherwise
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bool es7210_update_reg_bit_(uint8_t reg_addr, uint8_t update_bits, uint8_t data);
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/// @brief Convert floating point mic gain value to register value
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/// @param mic_gain Gain value to convert
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/// @return Corresponding register value for specified gain
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uint8_t es7210_gain_reg_value_(float mic_gain);
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bool configure_i2s_format_();
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bool configure_mic_gain_();
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bool configure_sample_rate_();
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bool setup_complete_{false};
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bool enable_tdm_{false}; // TDM is unsupported in ESPHome as of version 2024.12
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float mic_gain_{0};
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ES7210BitsPerSample bits_per_sample_{ES7210_BITS_PER_SAMPLE_16};
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uint32_t sample_rate_{0};
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};
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} // namespace es7210
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} // namespace esphome
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