37 lines
1019 B
C
37 lines
1019 B
C
// BD3491 driver
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// author : Julian Daube
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#ifndef __AUDIO_MUX_BD3491_H__
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#define __AUDIO_MUX_BD3491_H__
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#include "stm32f1xx_hal.h"
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#define BD_INPUT_MUTE (1<<4)
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#define BD_INPUT_ALL (1<<5)
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// number can either be 0-5 (meaning CHANNEL1 to CHANNEL 6)
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// or BD_INPUT_MUTE or BD_INPUT_SHORT
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void bd_set_input(I2C_HandleTypeDef * handle, uint8_t number);
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#define BD_MAX_GAIN 20 // gain in db
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int bd_set_gain(I2C_HandleTypeDef * handle, uint8_t gain_in_db);
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#define BD_INF_ATTENUATION 0xFF
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uint8_t bd_set_attenuation(I2C_HandleTypeDef * handle, uint8_t right_channel, uint8_t attenuation_in_db);
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// when gain == 0, cut bass boost
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void bd_set_bass_boost(I2C_HandleTypeDef * handle, uint8_t gain);
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// when gain == 0, cut treble boost
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void bd_set_treble_boost(I2C_HandleTypeDef * handle, uint8_t gain);
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enum BD_SOURROUND_GAIN {
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BD_SOURROUND_OFF = 0,
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BD_SOURROUND_LOW = 5,
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BD_SOURROUND_MIDDLE = 10,
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BD_SOURROUND_HIGH = 15,
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};
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void bd_set_sourround(I2C_HandleTypeDef * handle, enum BD_SOURROUND_GAIN gain);
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#endif
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