#include "pdca.h"
#include "abdac.h"
#include "gpio.h"
#include "intc.h"
#include "board.h"
#include "tpa6130.h"
#include "conf_tpa6130.h"
#include "audio.h"
#include "twim.h"

Macros
#define	BRIDGE_TIED_LOAD 0x20

#define	DUAL_MONO_HP 0x10

#define	HIZ_L 0x80

#define	HIZ_R 0x40

#define	HP_EN_L 0x80

#define	HP_EN_R 0x40

#define	MUTE_L 0x80

#define	MUTE_R 0x40

#define	STEREO_HP 0x00

#define	SW_SHUTDOWN 0x01

#define	THERMAL 0x02

#define	TPA6130_CONTROL 0x1

#define	TPA6130_CONTROL_DEFAULT 0x00

#define	TPA6130_I2C_ADDRESS_VERSION 0x4

#define	TPA6130_I2C_ADDRESS_VERSION_DEFAULT 0x02

#define	TPA6130_MAX_VOLUME 0x3F

#define	TPA6130_OUTPUT_IMPEDANCE 0x3

#define	TPA6130_OUTPUT_IMPEDANCE_DEFAULT 0x00

#define	TPA6130_VOLUME_AND_MUTE 0x2

#define	TPA6130_VOLUME_AND_MUTE_DEFAULT 0x0F

#define	TWI_READ_HW 0

#define	TWI_READ_SR 1

#define	VERSION 0x02

Functions
	ISR (tpa6130_abdac_tx_pdca_int_handler, TPA6130_ABDAC_PDCA_IRQ_GROUP, TPA6130_ABDAC_PDCA_INT_LEVEL)

void	tpa6130_dac_decrease_volume (void)
	Decreases the output volume of the amplifier by one step. More...

void	tpa6130_dac_flush (void)
	Flushes the sample buffer being output to the ABDAC. More...

uint8_t	tpa6130_dac_get_volume (void)
	Returns the current volume of the DAC. The volume is in the range 0 - 255. More...

void	tpa6130_dac_increase_volume (void)
	Increases the output volume of the amplifier by one step. Stops at the maximum volume and thus does not wrap to the lowest volume. More...

bool	tpa6130_dac_is_volume_boosted (void)
	Returns the state of the boost mode of the DAC. More...

bool	tpa6130_dac_is_volume_muted (void)
	Returns the state of the mute mode of the DAC. More...

void	tpa6130_dac_mute (bool mute)
	No more audio if input is true. More...

bool	tpa6130_dac_output (void *sample_buffer, size_t sample_length)
	Outputs a sample buffer to the DACs. The input requires a sample buffer that consists of words (32-bit) which contain two (16-bit) samples, one for each channel. More...

void	tpa6130_dac_set_volume (uint8_t volume)
	Set the volume of the DAC. More...

void	tpa6130_dac_setup (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)
	Sets the DACs up with new settings. More...

void	tpa6130_dac_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 ABDAC. More...

void	tpa6130_dac_stop (void)
	Stops the ABDAC and puts the amplifier in low power mode. Additionally it sets all used pins to the GPIO state. The counter part of this function is tpa6130_dac_start(...) More...

int8_t	tpa6130_get_volume (void)
	Gets the current volume settings. More...

int8_t	tpa6130_init (void)
	Probes and initializes the amplifier. Probes the TWI bus for the amplifier by using the slave address specified in the configuration (TPA6130_TWI_ADDRESS). If the device responds with an ACK the version register is read out and compared to the valid versions (TPA6130_VERSION). Last step is to set volume to 0, unmute and set the configuration specified in the conf_tpa6130.h file (stereo, mono ..). More...

void	tpa6130_powerup (void)
	Powers up the amplifier from low power mode. More...

static uint8_t	tpa6130_read_data (uint8_t reg, bool shadow)
	Reads data from a register. The shadow parameter is used to specify if the data should be read from a driver internal register shadowing or directly from the device. More...

void	tpa6130_set_volume (int8_t volume)
	Sets the volume of the amplifier. Valid values are between 0 (min -59dB) and 63 (max 4dB) although the function takes care of any values higher than that by setting it to max. A volume of 0 will mute both channels. Any other value will unmute them. More...

void	tpa6130_shutdown (void)
	Shuts down the amplifier and sets it into low power mode. This is the software low power mode described in the datasheet. More...

static void	tpa6130_write_data (uint8_t reg, uint8_t data)
	Writes data to a register. More...

Variables
static const gpio_map_t	TPA6130_ABDAC_GPIO_MAP

struct {
void(* callback )(uint32_t arg)

uint32_t callback_opt

uint8_t num_channels

}	tpa6130_output_param

struct {
uint8_t control

uint8_t i2c_address_version

uint8_t output_impedance

uint8_t volume_and_mute

}	tpa6130_shadow_regs
	Driver internal shadow register set. More...

#define BRIDGE_TIED_LOAD 0x20

#define DUAL_MONO_HP 0x10

#define HIZ_L 0x80

#define HIZ_R 0x40

#define HP_EN_L 0x80

Referenced by tpa6130_init().

#define HP_EN_R 0x40

Referenced by tpa6130_init().

#define MUTE_L 0x80

Referenced by tpa6130_dac_decrease_volume(), tpa6130_dac_get_volume(), tpa6130_dac_increase_volume(), tpa6130_dac_mute(), and tpa6130_set_volume().

#define MUTE_R 0x40

Referenced by tpa6130_dac_decrease_volume(), tpa6130_dac_get_volume(), tpa6130_dac_increase_volume(), tpa6130_dac_mute(), and tpa6130_set_volume().

#define STEREO_HP 0x00

#define SW_SHUTDOWN 0x01

Referenced by tpa6130_powerup(), and tpa6130_shutdown().

#define THERMAL 0x02

#define TPA6130_CONTROL 0x1

Referenced by tpa6130_init(), tpa6130_powerup(), and tpa6130_shutdown().

#define TPA6130_CONTROL_DEFAULT 0x00

#define TPA6130_I2C_ADDRESS_VERSION 0x4

Referenced by tpa6130_init().

#define TPA6130_I2C_ADDRESS_VERSION_DEFAULT 0x02

#define TPA6130_MAX_VOLUME 0x3F

#define TPA6130_OUTPUT_IMPEDANCE 0x3

#define TPA6130_OUTPUT_IMPEDANCE_DEFAULT 0x00

#define TPA6130_VOLUME_AND_MUTE 0x2

Referenced by tpa6130_dac_mute(), tpa6130_get_volume(), tpa6130_init(), and tpa6130_set_volume().

#define TPA6130_VOLUME_AND_MUTE_DEFAULT 0x0F

#define TWI_READ_HW 0

Referenced by tpa6130_init(), tpa6130_powerup(), and tpa6130_shutdown().

#define TWI_READ_SR 1

Referenced by tpa6130_get_volume().

#define VERSION 0x02

Referenced by tpa6130_init().

ISR	(	tpa6130_abdac_tx_pdca_int_handler	,
		TPA6130_ABDAC_PDCA_IRQ_GROUP	,
		TPA6130_ABDAC_PDCA_INT_LEVEL
	)

References 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, PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO, TPA6130_ABDAC_PDCA_CHANNEL, and tpa6130_output_param.

static uint8_t tpa6130_read_data	(	uint8_t	reg,
		bool	shadow
	)

static

Reads data from a register. The shadow parameter is used to specify if the data should be read from a driver internal register shadowing or directly from the device.

Parameters

reg	Register index.
shadow	Read from device (shadow=false) or from shadowed register (shadow=true).

References twi_package_t::chip, data, tpa6130_shadow_regs, TPA6130_TWI, TPA6130_TWI_ADDRESS, and twi_master_read().

Referenced by tpa6130_get_volume(), tpa6130_init(), tpa6130_powerup(), and tpa6130_shutdown().

static void tpa6130_write_data	(	uint8_t	reg,
		uint8_t	data
	)

static

Writes data to a register.

Parameters

reg	Register index. Use the defines in this file.
data	Register data. Macros from this file can be used to ease writing to the bitfields.

References twi_package_t::chip, tpa6130_shadow_regs, TPA6130_TWI, TPA6130_TWI_ADDRESS, twi_master_write(), and TWI_SUCCESS.

Referenced by tpa6130_dac_mute(), tpa6130_init(), tpa6130_powerup(), tpa6130_set_volume(), and tpa6130_shutdown().

void(* callback)(uint32_t arg)

uint32_t callback_opt

uint8_t control

uint8_t i2c_address_version

uint8_t num_channels

uint8_t output_impedance

const gpio_map_t TPA6130_ABDAC_GPIO_MAP

static

Initial value:

=
{
  {TPA6130_DATA0_PIN, TPA6130_DATA0_FUNCTION},
  {TPA6130_DATA1_PIN, TPA6130_DATA1_FUNCTION},
  {TPA6130_DATAN0_PIN, TPA6130_DATAN0_FUNCTION},
  {TPA6130_DATAN1_PIN, TPA6130_DATAN1_FUNCTION}
}

struct { ... } tpa6130_output_param

Initial value:

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

Referenced by ISR(), tpa6130_dac_mute(), tpa6130_dac_output(), tpa6130_dac_setup(), and tpa6130_dac_stop().

struct { ... } tpa6130_shadow_regs

Initial value:

=
{
  .control             = TPA6130_CONTROL_DEFAULT,
  .volume_and_mute     = TPA6130_VOLUME_AND_MUTE_DEFAULT,
  .output_impedance    = TPA6130_OUTPUT_IMPEDANCE_DEFAULT,
  .i2c_address_version = TPA6130_I2C_ADDRESS_VERSION_DEFAULT,
}

Driver internal shadow register set.

Referenced by tpa6130_init(), tpa6130_read_data(), and tpa6130_write_data().

uint8_t volume_and_mute

Microchip® Advanced Software Framework

Macros

Functions

Variables