tlv320aic23b.c File Reference

#include <stddef.h>
#include <string.h>
#include "compiler.h"
#include "audio.h"
#include "tlv320aic23b.h"
#include <avr32/io.h>
#include "intc.h"
#include "gpio.h"
#include "twi.h"
#include "ssc_i2s.h"
#include "pdca.h"

Macros
#define	AIC23B_CTRL_RESET
	Default local image of the registers. More...
#define	AIC23B_REG_COUNT   (sizeof(aic23b_ctrl) / sizeof(aic23b_ctrl[0]))
	Number of registers. More...

Functions
static void	aic23b_ssc_rx_pdca_int_handler (void)
	SSC RX PDCA interrupt handler managing the out-of-samples condition. More...
static void	aic23b_ssc_tx_pdca_int_handler (void)
	SSC TX PDCA interrupt handler managing the out-of-samples condition. More...
static void	aic23b_write_control_word (aic23b_ctrl_t ctrl)
	Writes the ctrl control word. More...
Low-Level Interface
void	aic23b_configure_freq (int master_clock_hz, int sample_rate_hz)
	Used to configure the codec frequency. More...
uint16_t	aic23b_read_reg (uint8_t reg)
	Reads the reg register. More...
void	aic23b_write_reg (uint8_t reg, uint16_t val)
	Writes val to the reg register. More...
Mid-Level Interface
int8_t	aic23b_get_line_in_volume (uint8_t ch)
	Gets the ch line input channel volume. More...
void	aic23b_set_line_in_volume (uint8_t ch_mask, int8_t vol)
	Sets the ch_mask line input channels volume to vol. More...
uint8_t	aic23b_dac_get_average_headphone_volume (void)
	Gets the average headphone volume. More...
void	aic23b_dac_set_average_headphone_volume (uint8_t volume)
	Sets the average headphone volume. More...
bool	aic23b_dac_is_headphone_volume_muted (void)
	Returns the state of the mute mode of the DAC. More...
bool	aic23b_dac_is_headphone_volume_boosted (void)
	Returns the state of the boost mode of the DAC. More...
int8_t	aic23b_get_headphone_volume (uint8_t ch)
	Gets the ch channel headphone volume. More...
void	aic23b_set_headphone_volume (uint8_t ch_mask, int8_t vol, bool z_cross)
	Sets the ch_mask channels headphone volume to vol, with zero-cross detect if z_cross is true. More...
aic23b_aapc_t	aic23b_get_analog_audio_path (void)
	Gets the analog audio path. More...
void	aic23b_set_analog_audio_path (aic23b_aapc_t aapc)
	Sets the analog audio path to aapc. More...
aic23b_dapc_t	aic23b_get_digital_audio_path (void)
	Gets the digital audio path. More...
void	aic23b_set_digital_audio_path (aic23b_dapc_t dapc)
	Sets the digital audio path to dapc. More...
aic23b_pdc_t	aic23b_get_power_down_state (void)
	Gets the power down state. More...
void	aic23b_set_power_down_state (aic23b_pdc_t pdc)
	Sets the power down state to pdc. More...
bool	aic23b_is_dig_audio_activated (void)
	Tells whether the digital audio interface is activated. More...
void	aic23b_activate_dig_audio (bool act)
	Activates or deactivates the digital audio interface according to act. More...
void	aic23b_reset (void)
	Resets the CODEC. More...
High-Level Interface
bool	aic23b_dac_output (void *sample_buffer, size_t sample_length)
	Outputs a sample buffer to the DAC. More...
void	aic23b_dac_increase_volume (void)
	Increases the output volume of the DAC. More...
void	aic23b_dac_decrease_volume (void)
	Decreases the output volume of the DAC. More...
void	aic23b_dac_mute (bool mute)
	Mute audio if mute is set to true. More...
bool	aic23b_adc_input (void *sample_buffer, size_t sample_length)
	Input a sample buffer from the ADC. More...
void	aic23b_codec_start (uint32_t sample_rate_hz, uint8_t num_channels, uint8_t bits_per_sample, bool swap_channels, void(*callback)(uint32_t arg), uint32_t callback_opt, uint32_t pba_hz)
	Starts the CODEC. More...
void	aic23b_codec_setup (uint32_t sample_rate_hz, uint8_t num_channels, uint8_t bits_per_sample, bool swap_channels, void(*callback)(uint32_t opt), uint32_t callback_opt, uint32_t pba_hz)
void	aic23b_codec_flush (void)
	Flushes the sample buffers being input from the ADC and output to the DAC. More...
void	aic23b_codec_stop (void)
	Stops the CODEC. More...

Variables
static aic23b_ctrl_t	aic23b_ctrl [] = AIC23B_CTRL_RESET
	Local image of the registers. More...
static const aic23b_ctrl_t	aic23b_ctrl_reset [] = AIC23B_CTRL_RESET
	Default local image of the registers. More...
struct {
void(*   callback )(uint32_t arg)
uint32_t   callback_opt
uint8_t   num_channels
}	aic23b_output_params
	Output parameters. More...
static const gpio_map_t	AIC23B_SSC_CODEC_GPIO_MAP
	Map of the SSC pins used by the TLV320AIC23B. More...

#define AIC23B_CTRL_RESET

Default local image of the registers.

#define AIC23B_REG_COUNT   (sizeof(aic23b_ctrl) / sizeof(aic23b_ctrl[0]))

Number of registers.

Referenced by aic23b_read_reg(), and aic23b_write_reg().

static void aic23b_ssc_rx_pdca_int_handler ( void  )

static

SSC RX PDCA interrupt handler managing the out-of-samples condition.

References aic23b_output_params, AIC23B_SSC_RX_PDCA_CHANNEL, AUDIO_ADC_OUT_OF_SAMPLE_CB, AUDIO_ADC_RELOAD_CB, pdca_disable_interrupt_reload_counter_zero(), pdca_disable_interrupt_transfer_complete(), pdca_get_transfer_status(), PDCA_TRANSFER_COMPLETE, and PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO.

Referenced by aic23b_codec_start().

static void aic23b_ssc_tx_pdca_int_handler ( void  )

static

SSC TX PDCA interrupt handler managing the out-of-samples condition.

References aic23b_output_params, AIC23B_SSC_TX_PDCA_CHANNEL, AUDIO_DAC_OUT_OF_SAMPLE_CB, AUDIO_DAC_RELOAD_CB, pdca_disable_interrupt_reload_counter_zero(), pdca_disable_interrupt_transfer_complete(), pdca_get_transfer_status(), PDCA_TRANSFER_COMPLETE, and PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO.

Referenced by aic23b_codec_start().

static void aic23b_write_control_word ( aic23b_ctrl_t  ctrl )

static

Writes the ctrl control word.

References AIC23B_TWI, AIC23B_TWI_ADDRESS, twi_package_t::chip, twi_master_write(), and TWI_SUCCESS.

Referenced by aic23b_write_reg().

aic23b_ctrl_t aic23b_ctrl[] = AIC23B_CTRL_RESET

static

Local image of the registers.

const aic23b_ctrl_t aic23b_ctrl_reset[] = AIC23B_CTRL_RESET

static

Default local image of the registers.

struct { ... } aic23b_output_params

Initial value:

=
{
  .num_channels = 0,
  .callback     = NULL,
  .callback_opt = 0
}

Output parameters.

Referenced by aic23b_adc_input(), aic23b_codec_setup(), aic23b_codec_stop(), aic23b_dac_mute(), aic23b_dac_output(), aic23b_ssc_rx_pdca_int_handler(), and aic23b_ssc_tx_pdca_int_handler().

const gpio_map_t AIC23B_SSC_CODEC_GPIO_MAP

static

Initial value:

=
{
  {AIC23B_SSC_TX_CLOCK_PIN,       AIC23B_SSC_TX_CLOCK_FUNCTION      },
  {AIC23B_SSC_TX_DATA_PIN,        AIC23B_SSC_TX_DATA_FUNCTION       },
  {AIC23B_SSC_TX_FRAME_SYNC_PIN,  AIC23B_SSC_TX_FRAME_SYNC_FUNCTION },
  {AIC23B_SSC_RX_DATA_PIN,        AIC23B_SSC_RX_DATA_FUNCTION       },
  {AIC23B_SSC_RX_FRAME_SYNC_PIN,  AIC23B_SSC_RX_FRAME_SYNC_FUNCTION }
}

Map of the SSC pins used by the TLV320AIC23B.

void(* callback)(uint32_t arg)

uint32_t callback_opt

uint8_t num_channels