Shadowtrance
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <tactility/error.h>
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#include <tactility/drivers/audio_codec.h>
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struct Device;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief ES7210 codec device configuration.
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*
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* The ES7210 is an input-only (microphone ADC) codec. The I2C bus is the
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* device's parent (per i2c-device.yaml), while the I2S controller carrying
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* the (typically 4-slot TDM) audio data is referenced via a devicetree phandle.
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*/
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struct Es7210Config {
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/** I2C address on the bus (typically 0x40) */
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uint8_t address;
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/** I2S controller device that carries audio data */
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struct Device* i2s_device;
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/** Bitmask of microphones to enable, e.g. ES7210_SEL_MIC1 | ES7210_SEL_MIC2 | ... */
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uint8_t mic_selected_mask;
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/**
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* Extra fixed digital gain multiplier applied by audio_stream on top of the ES7210's
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* own hardware ADC gain (already at a hard-coded 30dB default out of a 0..37.5dB
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* range), as an integer percentage (100 = 1.0x / no extra boost). Small MEMS mic
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* capsules can still sound quiet even near max hardware gain; this is for boards where
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* 30dB hardware gain alone isn't enough. devicetree has no float property type, hence
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* the x100 integer encoding.
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*/
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uint16_t input_gain_percent;
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};
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#ifdef __cplusplus
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}
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#endif
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