ms3.c File Reference

#include "ms3.h"
#include "ssc_i2s.h"
#include "pdca.h"
#include "board.h"
#include "audio.h"
#include "intc.h"
#include "gpio.h"
#include "twi.h"
#include "cs2200.h"

Macros
#define	CS2200_FREF   12000000
	Frequency (in Hz) of the reference clock connected to the CS2200. More...
#define	MS3_SSC_TX_FRAME_SYNC_PIN   (AVR32_SSC_TX_FRAME_SYNC_0_PIN)
#define	MS3_SSC_TX_PDCA_CHANNEL   (0)

Functions
void	ms3_dac_decrease_volume (void)
void	ms3_dac_flush (void)
U8	ms3_dac_get_volume (void)
void	ms3_dac_increase_volume (void)
bool	ms3_dac_is_volume_boosted (void)
bool	ms3_dac_is_volume_muted (void)
void	ms3_dac_mute (bool mute)
bool	ms3_dac_output (void *sample_buffer, size_t sample_length)
void	ms3_dac_set_volume (U8 volume)
void	ms3_dac_setup (U32 sample_rate_hz, U8 num_channels, U8 bits_per_sample, bool swap_channels, void(*callback)(U32 arg), U32 callback_opt, U32 pba_hz)
void	ms3_dac_start (U32 sample_rate_hz, U8 num_channels, U8 bits_per_sample, bool swap_channels, void(*callback)(U32 arg), U32 callback_opt, U32 pba_hz)
void	ms3_dac_stop (void)
static uint8_t	ms3_get_volume (uint8_t ch)
static uint16_t	ms3_read_reg (uint8_t reg)
static void	ms3_set_volume (uint8_t ch, uint8_t vol)
static void	ms3_ssc_tx_pdca_int_handler (void)
static void	ms3_write_reg (uint8_t reg, uint8_t data)

Variables
static const gpio_map_t	MS3_GPIO_MAP
struct {
void(*   callback )(U32 arg)
U32   callback_opt
U8   num_channels
}	ms3_output_params
	Output parameters. More...
uint32_t	usb_stream_resync_frequency
	CS2200 out frequency. More...

#define CS2200_FREF   12000000

Frequency (in Hz) of the reference clock connected to the CS2200.

Note

By default this value is set to 12 MHz.

Referenced by ms3_dac_setup().

#define MS3_SSC_TX_FRAME_SYNC_PIN   (AVR32_SSC_TX_FRAME_SYNC_0_PIN)

Referenced by ms3_dac_output().

#define MS3_SSC_TX_PDCA_CHANNEL   (0)

Referenced by ms3_dac_flush(), ms3_dac_mute(), ms3_dac_output(), ms3_dac_setup(), ms3_dac_stop(), and ms3_ssc_tx_pdca_int_handler().

static uint8_t ms3_get_volume ( uint8_t  ch )

static

References MS3_HP_VOL_L, MS3_HP_VOL_R, MS3_LEFT_CHANNEL, ms3_read_reg(), and MS3_RIGHT_CHANNEL.

Referenced by ms3_dac_decrease_volume(), and ms3_dac_increase_volume().

static uint16_t ms3_read_reg ( uint8_t  reg )

static

References twi_package_t::chip, data, MS3_TWI, MS3_TWI_ADDRESS, twi_master_read(), and TWI_SUCCESS.

Referenced by ms3_dac_is_volume_muted(), and ms3_get_volume().

static void ms3_set_volume ( uint8_t  ch, uint8_t  vol  )

static

References MS3_HP_VOL_L, MS3_HP_VOL_R, MS3_LEFT_CHANNEL, MS3_RIGHT_CHANNEL, MS3_SP_VOL_L, MS3_SP_VOL_R, and ms3_write_reg().

Referenced by ms3_dac_decrease_volume(), ms3_dac_increase_volume(), and ms3_dac_set_volume().

static void ms3_ssc_tx_pdca_int_handler ( void  )

static

References AUDIO_DAC_OUT_OF_SAMPLE_CB, AUDIO_DAC_RELOAD_CB, ms3_output_params, MS3_SSC_TX_PDCA_CHANNEL, 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 ms3_dac_start().

static void ms3_write_reg ( uint8_t  reg, uint8_t  data  )

static

References twi_package_t::chip, data, MS3_TWI, MS3_TWI_ADDRESS, twi_master_write(), and TWI_SUCCESS.

Referenced by ms3_set_volume().

void(* callback)(U32 arg)

U32 callback_opt

const gpio_map_t MS3_GPIO_MAP

static

Initial value:

= {
    {AVR32_SSC_TX_CLOCK_0_PIN, AVR32_SSC_TX_CLOCK_0_FUNCTION},
    {AVR32_SSC_TX_DATA_0_PIN, AVR32_SSC_TX_DATA_0_FUNCTION},
    {AVR32_SSC_TX_FRAME_SYNC_0_PIN, AVR32_SSC_TX_FRAME_SYNC_0_FUNCTION},
    {AVR32_PM_GCLK_2_0_PIN, AVR32_PM_GCLK_2_0_FUNCTION}
}

struct { ... } ms3_output_params

Initial value:

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

Output parameters.

Referenced by ms3_dac_mute(), ms3_dac_output(), ms3_dac_setup(), ms3_dac_stop(), and ms3_ssc_tx_pdca_int_handler().

U8 num_channels

uint32_t usb_stream_resync_frequency

CS2200 out frequency.

Referenced by aic23b_dac_setup(), ms3_dac_setup(), usb_stream_init(), and usb_stream_input().