Audio APIs

[English]

Important

The Audio API v1.0 is the lastest and stable Audio APIs. All new applications should use Audio API v1.0.

Audio Interface

The BK Audio Driver supports following functions:

adc function

dac function

eq function

The adc and dac function can be operated independently. However the eq function need to use with dac function together.

Audio API Categories

Most of Audio APIs can be categoried as:

Common APIs

The common APIs are prefixed with bk_aud, the APIs may be common for adc and dac interfaces, e.g. bk_aud_driver_init() etc.

Adc function APIs.

The APIs provide support for adc function. e.g. bk_aud_adc_init() etc.

Dac function APIs.

The APIs provide support for dac function. e.g. bk_aud_dac_init() etc.

Eq function APIs.

The APIs provide support for eq function. e.g. bk_aud_eq_init() etc.

Common APIs:

bk_aud_driver_init() - init the audio driver
bk_aud_driver_deinit() - deinit the audio driver
bk_aud_register_aud_isr() - register audio isr

Adc APIs:

bk_aud_adc_init() - init the adc module of audio
bk_aud_adc_deinit() - deinit the adc module of audio
bk_aud_set_adc_samp_rate() - set the sample rate in adc work mode
bk_aud_get_adc_fifo_addr() - get the adc fifo address in adc work mode
bk_aud_get_dtmf_fifo_addr() - get the dtmf fifo address in adc work mode
bk_aud_get_adc_status() - get the adc status information in adc work mode
bk_aud_get_dtmf_status() - get the dtmf status information in dtmf work mode
bk_aud_enable_adc_int() - enable adc interrupt
bk_aud_disable_adc_int() - disable adc interrupt
bk_aud_start_adc() - start adc function
bk_aud_stop_adc() - stop adc function
bk_aud_get_adc_fifo_data() - get adc data
bk_aud_get_dtmf_fifo_data() - get dtmf data

Dac APIs:

bk_aud_dac_init() - init the dac module of audio
bk_aud_dac_deinit() - deinit the dac module of audio
bk_aud_set_dac_samp_rate() - set the sample rate of audio dac function
bk_aud_get_dac_fifo_addr() - get the dac fifo address
bk_aud_enable_dac_int() - enable dac interrupt function
bk_aud_disable_dac_int() - disable dac interrupt function
bk_aud_get_dac_status() - get the dac fifo status information
bk_aud_start_dac() - start dac function
bk_aud_stop_dac() - stop dac function

Eq APIs:

bk_aud_eq_init() - init the eq module of audio
bk_aud_eq_deinit() - deinit the eq module of audio

API Reference

Header File

aud_adc.h

Functions

bk_err_t bk_aud_adc_init(aud_adc_config_t *adc_config)

Init the adc module of audio.

This API init the adc module:

Set adc work mode: adc/dtmf
Configure the adc/dtmf parameters
disable adc/dtmf
disable adc/dtmf interrupts

Parameters

adc_work_mode – adc work mode adc/dtmf
adc_config – adc configure of adc work mode
dtmf_config – dtmf configure of dtmf work mode

Returns

BK_OK: succeed
BK_ERR_AUD_ADC_MODE: adc work mode is error
BK_ERR_NULL_PARAM: config is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_deinit(void)

Deinit adc module.

This API deinit the adc module of audio:

Disable adc and dtmf

Returns

BK_OK: succeed
others: other errors.

bk_err_t bk_aud_adc_set_samp_rate(uint32_t samp_rate)

Set the sample rate in adc work mode.

Parameters

samp_rate – adc sample rate of adc work mode

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_set_gain(uint32_t value)

Set the adc gain in adc work mode.

Parameters

value – the gain value of adc work mode

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_set_chl(aud_adc_chl_t chl)

Set the adc gain in adc work mode.

Parameters

mic_chl – the mic channel value of adc work mode

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_set_mic_mode(aud_mic_id_t mic_id, aud_adc_mode_t mode)

Set the mic external interface mode in adc work mode.

Parameters

mic_id – the mic id
intf_mode – signal end or difference

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_get_fifo_addr(uint32_t *adc_fifo_addr)

Get the adc fifo address in adc work mode.

Parameters

adc_fifo_addr – adc fifo address of adc work mode

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_get_status(uint32_t *adc_status)

Get the adc status information in adc work mode.

This API get the adc status of adc work mode:

Get fifo status

Parameters

adc_status – adc fifo status and agc status

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_enable_int(void)

Enable adc interrupt.

This API enable adc interrupt:

Enable adc interrupt if work mode is adc work mode
Enable dtmf interrupt if work mode is dtmf work mode

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_disable_int(void)

Disable adc interrupt.

This API disable adc interrupt:

Disable adc interrupt if work mode is adc work mode
Disable dtmf interrupt if work mode is dtmf work mode

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_start(void)

Start adc.

This API start adc:

Enable adc if work mode is adc work mode
Enable dtmf if work mode is dtmf work mode

Usage example:

//init audio driver
bk_aud_driver_init();

//init adc configuration
aud_adc_config_t adc_config;
adc_config.samp_rate = AUD_ADC_SAMP_RATE_8K;
adc_config.adc_enable = AUD_ADC_DISABLE;
adc_config.line_enable = AUD_ADC_LINE_DISABLE;
adc_config.dtmf_enable = AUD_DTMF_DISABLE;
adc_config.adc_hpf2_coef_B2 = 0;
adc_config.adc_hpf2_bypass_enable = AUD_ADC_HPF_BYPASS_ENABLE;
adc_config.adc_hpf1_bypass_enable = AUD_ADC_HPF_BYPASS_ENABLE;
adc_config.adc_set_gain = 0x2d;
adc_config.adc_samp_edge = AUD_ADC_SAMP_EDGE_RISING;
adc_config.adc_hpf2_coef_B0 = 0;
adc_config.adc_hpf2_coef_B1 = 0;
adc_config.adc_hpf2_coef_A0 = 0;
adc_config.adc_hpf2_coef_A1 = 0;
adc_config.dtmf_wr_threshold = 8;
adc_config.adcl_wr_threshold = 8;
adc_config.dtmf_int_enable = AUD_DTMF_INT_DISABLE;
adc_config.adcl_int_enable = AUD_ADCL_INT_DISABLE;
adc_config.loop_adc2dac = AUD_LOOP_ADC2DAC_DISABLE;
adc_config.agc_noise_thrd = 101;
adc_config.agc_noise_high = 101;
adc_config.agc_noise_low = 160;
adc_config.agc_noise_min = 1;
adc_config.agc_noise_tout = 0;
adc_config.agc_high_dur = 3;
adc_config.agc_low_dur = 3;
adc_config.agc_min = 1;
adc_config.agc_max = 4;
adc_config.agc_ng_method = AUD_AGC_NG_METHOD_MUTE;
adc_config.agc_ng_enable = AUD_AGC_NG_DISABLE;
adc_config.agc_decay_time = AUD_AGC_DECAY_TIME_128;
adc_config.agc_attack_time = AUD_AGC_ATTACK_TIME_128;
adc_config.agc_high_thrd = 18;
adc_config.agc_low_thrd = 0;
adc_config.agc_iir_coef = AUD_AGC_IIR_COEF_1_1024;
adc_config.agc_enable = AUD_AGC_DISABLE;
adc_config.manual_pga_value = 0;
adc_config.manual_pga_enable = AUD_GAC_MANUAL_PGA_DISABLE;
bk_aud_adc_init(AUD_ADC_WORK_MODE_ADC, &adc_config, NULL);
CLI_LOGI("init adc successful\n");

//start adc and dac
bk_aud_start_adc();

Returns

BK_OK: succeed
BK_ERR_AUD_ADC_MODE: adc work mode is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_stop(void)

Stop adc.

This API stop adc:

Disable adc if work mode is adc work mode
Disable dtmf if work mode is dtmf work mode

Returns

BK_OK: succeed
BK_ERR_AUD_ADC_MODE: adc work mode is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_get_fifo_data(uint32_t *adc_data)

Get adc data.

This API get adc fifo data

Returns

BK_OK: succeed
BK_ERR_AUD_ADC_MODE: adc work mode is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_set_adcl_wr_threshold(uint32_t value)

bk_err_t bk_aud_adc_register_isr(aud_isr_t isr)

Register audio isr.

This API register audio isr:

Disable adc if work mode is adc work mode
Disable dtmf if work mode is dtmf work mode

Usage example:

void cli_aud_adcl_isr(void *param)
{
    uint32_t adc_data;
    uint32_t adc_status;

    bk_aud_get_adc_status(&adc_status);
    if (adc_status & AUD_ADCL_NEAR_FULL_MASK) {
        bk_aud_get_adc_fifo_data(&adc_data);
        bk_aud_dac_write(adc_data);
    }
}

//register isr
ret = bk_aud_register_aud_isr(AUD_ISR_ADCL, cli_aud_adcl_isr, NULL);
CLI_LOGI("register adc isr successful\n");

//enable audio interrupt
bk_aud_enable_adc_int();
CLI_LOGI("enable adc interrupt successful\n");

Parameters

isr_id – adc work mode adc/dtmf
isr – audio isr callback
param – audio isr callback parameter

Returns

BK_OK: succeed
BK_ERR_AUD_ADC_MODE: adc work mode is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_adc_hpf_config(aud_adc_hpf_config_t *config)

bk_err_t bk_aud_adc_agc_config(aud_adc_agc_config_t *config)

bk_err_t bk_aud_adc_start_loop_test(void)

bk_err_t bk_aud_adc_stop_loop_test(void)

Header File

aud_dac.h

Functions

bk_err_t bk_aud_dac_get_fifo_addr(uint32_t *dac_fifo_addr)

Get the dac fifo address.

Parameters

dac_fifo_addr, : – dac fifo address

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_dac_init(aud_dac_config_t *dac_config)

Init the dac module of audio.

This API init the dac module:

Configure the dac parameters to enable dac function.

Parameters

dac_config, : – dac parameters configure

Returns

BK_OK: succeed
BK_ERR_NULL_PARAM: config is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_deinit(void)

Deinit dac module of audio.

This API deinit the dac module:

Configure the dac parameters to default value.

Parameters

None –

Returns

BK_OK: succeed

bk_err_t bk_aud_dac_set_samp_rate(uint32_t samp_rate)

Set the dac sample rate.

This API set the dac sample rate value.

Parameters

samp_rate, : – dac sample rate

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_set_gain(uint32_t value)

Set the dac gain.

Parameters

value – the gain value, range:0x00 ~ 0x3f

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_dac_set_chl(aud_dac_chl_t dac_chl)

Set the dac channel.

Parameters

dac_chl – the channel value

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

bk_err_t bk_aud_dac_enable_int(void)

Enable dac interrupt.

This API enable dac interrupt:

Parameters

None –

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_disable_int(void)

Disable dac interrupt.

This API disable dac interrupt:

Parameters

None –

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_get_status(uint32_t *dac_status)

Get the dac status information.

This API get the dac fifo status.

Usage example:

uint32_t dac_fifo_status = 0; bk_aud_get_dac_status(&dac_fifo_status); if (dac_fifo_status & AUD_DACL_NEAR_EMPTY_MASK) { }

Parameters

dac_status, : – dac fifo status

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_start(void)

Start dac.

This API start dac function.

Parameters

None –

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_stop(void)

Stop dac.

This API stop dac function.

Parameters

None –

Returns

BK_OK: succeed
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_write(uint32_t pcm_value)

bk_err_t bk_aud_dac_eq_config(aud_dac_eq_config_t *config)

Init the eq module of audio.

This API init the eq module:

Configure the eq parameters to enable the eq function.

Parameters

eq_config, : – eq parameter configure

Returns

BK_OK: succeed
BK_ERR_NULL_PARAM: config is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init

bk_err_t bk_aud_dac_eq_deconfig(void)

Deinit the eq module of audio.

This API deinit the eq module:

Configure the eq parameters to default value.

Parameters

eq_config, : – eq parameter configure

Returns

BK_OK: succeed
BK_ERR_NULL_PARAM: config is NULL

bk_err_t bk_aud_dac_register_isr(aud_isr_id_t isr_id, aud_isr_t isr)

Register audio isr.

This API register audio isr:

Disable adc if work mode is adc work mode
Disable dtmf if work mode is dtmf work mode

Usage example:

void cli_aud_adcl_isr(void *param)
{
    uint32_t adc_data;
    uint32_t adc_status;

    bk_aud_get_adc_status(&adc_status);
    if (adc_status & AUD_ADCL_NEAR_FULL_MASK) {
        bk_aud_get_adc_fifo_data(&adc_data);
        bk_aud_dac_write(adc_data);
    }
}

//register isr
ret = bk_aud_register_aud_isr(AUD_ISR_ADCL, cli_aud_adcl_isr, NULL);
CLI_LOGI("register adc isr successful\n");

//enable audio interrupt
bk_aud_enable_adc_int();
CLI_LOGI("enable adc interrupt successful\n");

Parameters

isr_id – adc work mode adc/dtmf
isr – audio isr callback
param – audio isr callback parameter

Returns

BK_OK: succeed
BK_ERR_AUD_ADC_MODE: adc work mode is NULL
BK_ERR_AUD_NOT_INIT: audio driver is not init
others: other errors.

API Typedefs

Header File

aud_adc_types.h

Structures

struct aud_adc_config_t

Public Members

aud_adc_chl_t adc_chl: AUD adc sample rate

uint32_t samp_rate: AUD adc sample rate

uint32_t adc_gain: AUD adc gain set

aud_adc_samp_edge_t adc_samp_edge: ADC data sampling clock edge select rising/falling

struct aud_adc_hpf_config_t

Public Members

aud_adc_hpf_bypass_t adc_hpf2_bypass_enable: AUD adc hpf2 disable

aud_adc_hpf_bypass_t adc_hpf1_bypass_enable: AUD adc hpf1 disable

uint32_t adc_hpf2_coef_B0: AUD adc HPF2 coefficient B0

uint32_t adc_hpf2_coef_B1: AUD adc HPF2 coefficient B1

uint32_t adc_hpf2_coef_B2: AUD adc HPF2 coefficient B2

uint32_t adc_hpf2_coef_A0: AUD adc HPF2 coefficient A0

uint32_t adc_hpf2_coef_A1: AUD adc HPF2 coefficient A1

struct aud_adc_agc_config_t

Public Members

uint32_t agc_noise_thrd: AUD AGC noise gating of excute，noise gating work when audio value is little

uint32_t agc_noise_high: AUD AGC corresponding MIC_RSSI low 10 bit

uint32_t agc_noise_low: AUD AGC corresponding MIC_RSSI low 10 bit

uint32_t agc_noise_min: AUD AGC {GAIN2[2:0] GAIN1[3:0]} when signal level below NOISE_LOW, when noise gating is enabled

aud_gac_noise_tout_t agc_noise_tout: AUD AGC noise tout

aud_gac_high_dur_t agc_high_dur: AUD AGC high noise gating work duration

aud_gac_low_dur_t agc_low_dur: AUD AGC low noise gating work duration

uint32_t agc_min: AUD AGC Minimum value of {GAIN2[2:0] GAIN1[3:0]}

uint32_t agc_max: AUD AGC Maximum value of {GAIN2[2:0] GAIN1[3:0]} Also the default gain setting when AGC is disabled

aud_agc_method_t agc_ng_method: AUD AGC noise gating method

aud_agc_ng_enable_t agc_ng_enable: AUD AGC enable noise gating

aud_agc_decay_time_t agc_decay_time: AUD AGC agc decay time

aud_agc_attack_time_t agc_attack_time: AUD AGC agc attack time

uint32_t agc_high_thrd: AUD AGC coefficient high five bit of MIC_RSSI

uint32_t agc_low_thrd: AUD AGC coefficient low five bit of MIC_RSSI

aud_agc_iir_coef_t agc_iir_coef: AUD AGC iir coefficient select

aud_agc_enable_t agc_enable: AUD AGC enable

uint32_t manual_pga_value: AUD AGC manual set PGA value

aud_agc_manual_pga_en_t manual_pga_enable: AUD AGC manual set PGA enable

Macros

BK_ERR_AUD_ADC_BASE

BK_ERR_AUD_ADC_NOT_INIT: AUD driver not init

DEFAULT_AUD_ADC_CONFIG()

Enumerations

enum aud_adc_mode_t

Values:

enumerator AUD_ADC_MODE_DIFFEN

enumerator AUD_ADC_MODE_SIGNAL_END

enumerator AUD_ADC_MODE_MAX

enum aud_adc_hpf_bypass_t

Values:

enumerator AUD_ADC_HPF_BYPASS_DISABLE: AUD ADC hpf bypass disable

enumerator AUD_ADC_HPF_BYPASS_ENABLE: AUD ADC hpf bypass enable

enumerator AUD_ADC_HPF_BYPASS_MAX

enum aud_adc_samp_edge_t

Values:

enumerator AUD_ADC_SAMP_EDGE_RISING: AUD ADC sampling clock edge : rising edge

enumerator AUD_ADC_SAMP_EDGE_FALLING: AUD ADC sampling clock edge : falling edge

enumerator AUD_ADC_SAMP_EDGE_MAX

enum aud_adcl_int_t

Values:

enumerator AUD_ADCL_INT_DISABLE: AUD ADCL interrupt disable

enumerator AUD_ADCL_INT_ENABLE: AUD ADCL interrupt enable

enumerator AUD_ADCL_INT_MAX

enum aud_loop_adc2dac_t

Values:

enumerator AUD_LOOP_ADC2DAC_DISABLE: ADC to DAC loop test disable

enumerator AUD_LOOP_ADC2DAC_ENABLE: ADC to DAC loop test enable

enumerator AUD_LOOP_ADC2DAC_MAX

enum aud_loop_dtmf2dac_t

Values:

enumerator AUD_LOOP_DTMF2DAC_DISABLE: DTMF to DAC loop test disable

enumerator AUD_LOOP_DTMF2DAC_ENABLE: DTMF to DAC loop test enable

enumerator AUD_LOOP_DTMF2DAC_MAX

enum aud_agc_ng_enable_t

Values:

enumerator AUD_AGC_NG_DISABLE: disable noise gating

enumerator AUD_AGC_NG_ENABLE: enable noise gating

enumerator AUD_AGC_NG_MAX

enum aud_agc_method_t

Values:

enumerator AUD_AGC_NG_METHOD_MUTE: mute or demute : default

enumerator AUD_AGC_NG_METHOD_CREASE: gradually increase or decrease gac

enumerator AUD_AGC_NG_METHOD_MAX

enum aud_agc_decay_time_t

Values:

enumerator AUD_AGC_DECAY_TIME_128: AGC decay time :128 2.7ms

enumerator AUD_AGC_DECAY_TIME_256: AGC decay time :256

enumerator AUD_AGC_DECAY_TIME_512: AGC decay time :512

enumerator AUD_AGC_DECAY_TIME_1024: AGC decay time :1024

enumerator AUD_AGC_DECAY_TIME_2048: AGC decay time :2048

enumerator AUD_AGC_DECAY_TIME_4096: AGC decay time :4096

enumerator AUD_AGC_DECAY_TIME_8192: AGC decay time :8192

enumerator AUD_AGC_DECAY_TIME_16384: AGC decay time :16384 340ms

enumerator AUD_AGC_DECAY_TIME_MAX

enum aud_agc_attack_time_t

Values:

enumerator AUD_AGC_ATTACK_TIME_8: AGC attack time :8 0.1667ms

enumerator AUD_AGC_ATTACK_TIME_16: AGC attack time :16

enumerator AUD_AGC_ATTACK_TIME_32: AGC attack time :32

enumerator AUD_AGC_ATTACK_TIME_64: AGC attack time :64

enumerator AUD_AGC_ATTACK_TIME_128: AGC attack time :128

enumerator AUD_AGC_ATTACK_TIME_256: AGC attack time :256

enumerator AUD_AGC_ATTACK_TIME_512: AGC attack time :512

enumerator AUD_AGC_ATTACK_TIME_1024: AGC attack time :1024 21 ms

enumerator AUD_AGC_ATTACK_TIME_MAX

enum aud_agc_iir_coef_t

Values:

enumerator AUD_AGC_IIR_COEF_1_32: AGC IRR coefficient : 1/32

enumerator AUD_AGC_IIR_COEF_1_64: AGC IRR coefficient : 1/64

enumerator AUD_AGC_IIR_COEF_1_128: AGC IRR coefficient : 1/128

enumerator AUD_AGC_IIR_COEF_1_256: AGC IRR coefficient : 1/256

enumerator AUD_AGC_IIR_COEF_1_512: AGC IRR coefficient : 1/512

enumerator AUD_AGC_IIR_COEF_1_1024: AGC IRR coefficient : 1/1024

enumerator AUD_AGC_IIR_COEF_1_2048: AGC IRR coefficient : 1/2048

enumerator AUD_AGC_IIR_COEF_1_4096: AGC IRR coefficient : 1/4096

enumerator AUD_AGC_IIR_COEF_MAX

enum aud_agc_enable_t

Values:

enumerator AUD_AGC_DISABLE: disable AGC

enumerator AUD_AGC_ENABLE: enable AGC

enumerator AUD_AGC_MAX

enum aud_agc_manual_pga_en_t

Values:

enumerator AUD_AGC_MANUAL_PGA_DISABLE: disable AGC manual set pga

enumerator AUD_AGC_MANUAL_PGA_ENABLE: enable AGC manual set pga

enumerator AUD_AGC_MANUAL_PGA_MAX

enum aud_adc_enable_t

Values:

enumerator AUD_ADC_DISABLE: disable adc

enumerator AUD_ADC_ENABLE: enable adc

enumerator AUD_ADC_ENABLE_MAX

enum aud_adc_line_enable_t

Values:

enumerator AUD_ADC_LINE_DISABLE: disable line in

enumerator AUD_ADC_LINE_ENABLE: enable line in

enumerator AUD_ADC_LINE_ENABLE_MAX

enum aud_adc_chl_t

Values:

enumerator AUD_ADC_CHL_L: ADC L

enumerator AUD_ADC_CHL_R: ADC R

enumerator AUD_ADC_CHL_LR: ADC L&R

enumerator AUD_ADC_CHL_MAX

enum aud_mic_id_t

Values:

enumerator AUD_MIC_MIC1: enable mic1

enumerator AUD_MIC_MIC2: enable mic2

enumerator AUD_MIC_BOTH: enable mic1 and mic2

enum aud_gac_noise_tout_t

Values:

enumerator AUD_AGC_NOISE_TOUT_0: AGC noise tout: 0 0ms

enumerator AUD_AGC_NOISE_TOUT_4: AGC noise tout: 4 0.5ms

enumerator AUD_AGC_NOISE_TOUT_8: AGC noise tout: 8

enumerator AUD_AGC_NOISE_TOUT_16: AGC noise tout: 16

enumerator AUD_AGC_NOISE_TOUT_32: AGC noise tout: 32

enumerator AUD_AGC_NOISE_TOUT_64: AGC noise tout: 64

enumerator AUD_AGC_NOISE_TOUT_128: AGC noise tout: 128

enumerator AUD_AGC_NOISE_TOUT_256: AGC noise tout: 256 32ms

enumerator AUD_AGC_NOISE_TOUT_MAX

enum aud_gac_high_dur_t

Values:

enumerator AUD_AGC_HIGH_DUR_0: AGC 0 ms，as soon as MIC_RSSI value higher than NOISE_HIGH，Noise gating work，leave off noise status

enumerator AUD_AGC_HIGH_DUR_4: AGC high duration: 4 0.5ms

enumerator AUD_AGC_HIGH_DUR_8: AGC high duration: 8

enumerator AUD_AGC_HIGH_DUR_16: AGC high duration: 16

enumerator AUD_AGC_HIGH_DUR_32: AGC high duration: 32

enumerator AUD_AGC_HIGH_DUR_64: AGC high duration: 64

enumerator AUD_AGC_HIGH_DUR_128: AGC high duration: 128

enumerator AUD_AGC_HIGH_DUR_256: AGC high duration: 256 32ms

enumerator AUD_AGC_HIGH_DUR_MAX

enum aud_gac_low_dur_t

Values:

enumerator AUD_AGC_LOW_DUR_0: AGC 0 ms，as soon as MIC_RSSI value lower than NOISE_HIGH，Noise gating work，leave off noise status

enumerator AUD_AGC_LOW_DUR_4: AGC low duration: 4 0.5ms

enumerator AUD_AGC_LOW_DUR_8: AGC low duration: 8

enumerator AUD_AGC_LOW_DUR_16: AGC low duration: 16

enumerator AUD_AGC_LOW_DUR_32: AGC low duration: 32

enumerator AUD_AGC_LOW_DUR_64: AGC low duration: 64

enumerator AUD_AGC_LOW_DUR_128: AGC low duration: 128

enumerator AUD_AGC_LOW_DUR_256: AGC low duration: 256 32ms

enumerator AUD_AGC_LOW_DUR_MAX

enum aud_adc_status_mask_t

Values:

enumerator AUD_ADCL_NEAR_FULL_MASK: AUD ADC left channel FIFO near full

enumerator AUD_ADCL_NEAR_EMPTY_MASK: AUD ADC left channel FIFO near empty

enumerator AUD_ADCL_FIFO_FULL_MASK: AUD ADC left channel FIFO full

enumerator AUD_ADCL_FIFO_EMPTY_MASK: AUD ADC left channel FIFO empty

Header File

aud_dac_types.h

Structures

struct aud_dac_config_t

Public Members

aud_dac_chl_t dac_chl: AUD dac channel

uint32_t samp_rate: AUD dac sample rate

aud_dac_work_mode_t work_mode: AUD dac work mode

uint16_t dac_gain: AUD dac gain set

aud_dac_clk_invert_t dac_clk_invert: AUD dac output clock edge select

struct aud_dac_hpf_config_t

Public Members

aud_dac_hpf_bypass_t dac_hpf2_bypass_enable: AUD dac hpf2 disable

aud_dac_hpf_bypass_t dac_hpf1_bypass_enable: AUD dac hpf1 disable

uint16_t dac_hpf2_coef_B0: AUD dac HPF2 coefficient B0

uint16_t dac_hpf2_coef_B1: AUD dac HPF2 coefficient B1

uint16_t dac_hpf2_coef_B2: AUD dac HPF2 coefficient B2

uint16_t dac_hpf2_coef_A1: AUD dac HPF2 coefficient A1

uint16_t dac_hpf2_coef_A2: AUD dac HPF2 coefficient A2

struct aud_dac_eq_config_t

Macros

BK_ERR_AUD_DAC_BASE

BK_ERR_AUD_DAC_NOT_INIT: AUD driver not init

DEFAULT_AUD_DAC_CONFIG()

Enumerations

enum aud_dac_enable_t

Values:

enumerator AUD_DAC_DISABLE: 0：disable dac

enumerator AUD_DAC_ENABLE: 1：enable dac

enumerator AUD_DAC_OTHERS

enum aud_dac_chl_t

Values:

enumerator AUD_DAC_CHL_L: enable dac left channel

enumerator AUD_DAC_CHL_R: enable dac right channel

enumerator AUD_DAC_CHL_LR: enable dac left and right channel

enumerator AUD_DAC_CHL_MAX

enum aud_dac_work_mode_t

Values:

enumerator AUD_DAC_WORK_MODE_DIFFEN

enumerator AUD_DAC_WORK_MODE_SIGNAL_END

enumerator AUD_DAC_WORK_MODE_MAX

enum aud_dac_hpf_bypass_t

Values:

enumerator AUD_DAC_HPF_BYPASS_DISABLE: AUD DAC hpf bypass disable

enumerator AUD_DAC_HPF_BYPASS_ENABLE: AUD DAC hpf bypass enable

enumerator AUD_DAC_HPF_BYPASS_OTHERS

enum aud_dac_clk_invert_t

Values:

enumerator AUD_DAC_CLK_INVERT_RISING: AUD dac output clock edge rising

enumerator AUD_DAC_CLK_INVERT_FALLING: AUD dac output clock edge falling

enumerator AUD_DAC_CLK_INVERT_OTHERS

enum aud_dac_int_enable_t

Values:

enumerator AUD_DACR_INT_DISABLE: AUD dac right channel interrupt disable

enumerator AUD_DACR_INT_ENABLE: AUD dac right channel interrupt enable

enumerator AUD_DACL_INT_DISABLE: AUD dac left channel interrupt disable

enumerator AUD_DACL_INT_ENABLE: AUD dac left channel interrupt enable

enumerator AUD_DAC_INT_OTHERS

enum aud_dac_filt_enable_t

Values:

enumerator AUD_DAC_FILT_DISABLE: AUD dac filter disable

enumerator AUD_DAC_FILT_ENABLE: AUD dac filter enable

enumerator AUD_DAC_FILT_OTHERS

enum aud_dac_fracmod_manual_t

Values:

enumerator AUD_DAC_FRACMOD_MANUAL_DISABLE: disable dac fractional frequency division of manual set

enumerator AUD_DAC_FRACMOD_MANUAL_ENABLE: enable ADC fractional frequency division of manual set

enumerator ADU_DAC_FRACMOD_MANUAL_OTHERS

enum aud_dac_status_mask_t

Values:

enumerator AUD_DACR_NEAR_FULL_MASK: AUD DAC right channel fifo near full

enumerator AUD_DACL_NEAR_FULL_MASK: AUD DAC left channel fifo near full

enumerator AUD_DACR_NEAR_EMPTY_MASK: AUD DAC right channel fifo near empty

enumerator AUD_DACL_NEAR_EMPTY_MASK: AUD DAC left channel fifo near empty

enumerator AUD_DACR_FIFO_FULL_MASK: AUD DAC right channel fifo full

enumerator AUD_DACL_FIFO_FULL_MASK: AUD DAC left channel fifo full

enumerator AUD_DACR_FIFO_EMPTY_MASK: AUD DAC right channel fifo empty

enumerator AUD_DACL_FIFO_EMPTY_MASK: AUD DAC left channel fifo empty