2.2.8 - #262
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TobiasRoeddiger wants to merge 36 commits into
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Define UUID 0x1410df99 for DMIC gain control characteristic. This allows BLE clients to adjust the ADAU1860 digital microphone gain over Bluetooth.
Add public methods mic_gain_write() and mic_gain_read() to safely access DMIC_VOL0 and DMIC_VOL1 registers. These methods encapsulate the private register access functions and allow external code to control microphone gain for channels 0 and 1.
Implement hw_codec_mic_gain_set(), hw_codec_mic_gain_get_left(), and hw_codec_mic_gain_get_right() functions. These provide a hardware abstraction layer for controlling ADAU186x DMIC_VOL registers with 0.375 dB step resolution across a +24 dB to mute range.
Add read_dmic_gain() and write_dmic_gain() handlers for the BT_UUID_DMIC_GAIN characteristic. This allows BLE clients to read and adjust DMIC gain for left and right channels using a 2-byte payload [left_reg, right_reg].
Add comprehensive documentation for DMIC microphone gain control including: - Hardware register mapping and gain calculations - BLE protocol specification - Usage examples - C/C++ API reference - Implementation details Replaces deprecated PDM terminology with DMIC to accurately reflect the ADAU1860 digital microphone interface.
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…Service - Removed the seal_check_service.c and seal_check_service.h files. - Added audio_response_service.h to define the audio response service interface. - Updated main.cpp to initialize the audio response service instead of the seal check service.
…and improve response handling
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