I2S#

Modules#

sl_i2s_version_t

sl_i2s_xfer_config_t

Enumerations#

enum

i2s_event_typedef_t {

SL_I2S_SEND_COMPLETE = ARM_SAI_EVENT_SEND_COMPLETE

SL_I2S_RECEIVE_COMPLETE = ARM_SAI_EVENT_RECEIVE_COMPLETE

SL_I2S_TX_UNDERFLOW = ARM_SAI_EVENT_TX_UNDERFLOW

SL_I2S_RX_OVERFLOW = ARM_SAI_EVENT_RX_OVERFLOW

SL_I2S_FRAME_ERROR = ARM_SAI_EVENT_FRAME_ERROR

}

Enumeration for different I2S callback events.

enum

sl_i2s_power_state_t {

SL_I2S_POWER_OFF = ARM_POWER_OFF

SL_I2S_LOW_POWER = ARM_POWER_LOW

SL_I2S_FULL_POWER = ARM_POWER_FULL

}

Enumeration for I2S power state.

enum

sl_i2s_mode_t {

SL_I2S_MASTER = ARM_SAI_MODE_MASTER

SL_I2S_SLAVE = ARM_SAI_MODE_SLAVE

}

Enumeration for I2S master and slave modes.

enum

sl_sai_protocol_t {

SL_I2S_PROTOCOL = ARM_SAI_PROTOCOL_I2S

SL_PCM_PROTOCOL = 0

}

Enumeration for SAI protocol type.

enum

sl_i2s_sync_t {

SL_I2S_SYNC = ARM_SAI_SYNCHRONOUS

SL_I2S_ASYNC = ARM_SAI_ASYNCHRONOUS

}

Enumeration for I2S SYNC/ASYNC modes.

enum

sl_i2s_xfer_type_t {

SL_I2S_TRANSMIT = ARM_SAI_CONFIGURE_TX

SL_I2S_RECEIVE = ARM_SAI_CONFIGURE_RX

SL_I2S_TRANSMIT_CONTROL = ARM_SAI_CONTROL_TX

SL_I2S_RECEIVE_CONTROL = ARM_SAI_CONTROL_RX

SL_I2S_SEND_ABORT = ARM_SAI_ABORT_SEND

SL_I2S_RECEIVE_ABORT = ARM_SAI_ABORT_RECEIVE

}

Enumeration for I2S transfer type.

enum

sl_i2s_xfer_size_t {

SL_I2S_DATA_SIZE16 = 16

SL_I2S_DATA_SIZE32 = 32

}

Enumeration for I2S transfer data size.

enum

sl_i2s_data_resolution_t {

SL_I2S_RESOLUTION_12 = 12

SL_I2S_RESOLUTION_16 = 16

SL_I2S_RESOLUTION_20 = 20

SL_I2S_RESOLUTION_24 = 24

SL_I2S_RESOLUTION_32 = 32

}

Enumeration for I2S audio data resolutions.

enum

sl_i2s_sampling_rate_t {

SL_I2S_SAMPLING_RATE_8000 = 8000

SL_I2S_SAMPLING_RATE_11025 = 11025

SL_I2S_SAMPLING_RATE_16000 = 16000

SL_I2S_SAMPLING_RATE_22050 = 22050

SL_I2S_SAMPLING_RATE_24000 = 24000

SL_I2S_SAMPLING_RATE_32000 = 32000

SL_I2S_SAMPLING_RATE_44100 = 44100

SL_I2S_SAMPLING_RATE_48000 = 48000

SL_I2S_SAMPLING_RATE_88200 = 88200

SL_I2S_SAMPLING_RATE_96000 = 96000

SL_I2S_SAMPLING_RATE_192000 = 192000

}

Enumeration for I2S sample rates.

Typedefs#

typedef ARM_SAI_SignalEvent_t

sl_i2s_signal_event_t

Renamed signal event structure.

typedef ARM_SAI_STATUS

sl_i2s_status_t

Renamed status structure.

typedef ARM_DRIVER_SAI

sl_i2s_driver_t

Renamed I2S driver structure.

typedef const void *

sl_i2s_handle_t

Created I2S handle type.

Functions#

sl_status_t

sl_si91x_i2s_init(uint32_t i2s_instance, sl_i2s_handle_t *i2s_handle)

Initialize the I2S.

sl_status_t

sl_si91x_i2s_deinit(sl_i2s_handle_t *i2s_handle)

Uninitialize I2S peripheral.

sl_status_t

sl_si91x_i2s_configure_power_mode(sl_i2s_handle_t i2s_handle, sl_i2s_power_state_t state)

Change the power mode of I2S, the supported modes are.

sl_status_t

sl_si91x_i2s_config_transmit_receive(sl_i2s_handle_t i2s_handle, sl_i2s_xfer_config_t *xfer_config)

Configure transmitter/Receiver parameters for I2S transfer.

sl_status_t

sl_si91x_i2s_transmit_data(sl_i2s_handle_t i2s_handle, const void *data, uint32_t size)

Configure I2S peripheral DMA channel to send data.

sl_status_t

sl_si91x_i2s_receive_data(sl_i2s_handle_t i2s_handle, const void *data, uint32_t size)

Configure I2S peripheral DMA channel to receive data.

sl_status_t

sl_si91x_i2s_register_event_callback(sl_i2s_handle_t i2s_handle, sl_i2s_signal_event_t callback_event)

sl_status_t

sl_si91x_i2s_unregister_event_callback(sl_i2s_handle_t i2s_handle)

Un-register the user callback function.

uint32_t

sl_si91x_i2s_get_transmit_data_count(sl_i2s_handle_t i2s_handle)

Get the transmit data count of I2S.

uint32_t

sl_si91x_i2s_get_receive_data_count(sl_i2s_handle_t i2s_handle)

Get the receive data count of I2S.

sl_i2s_version_t

sl_si91x_i2s_get_version(void)

Get the release, sqa, and dev version of I2S.

sl_i2s_status_t

sl_si91x_i2s_get_status(sl_i2s_handle_t i2s_handle)

Get the transfer status I2S.

sl_status_t

sl_si91x_i2s_end_transfer(sl_i2s_handle_t i2s_handle, sl_i2s_xfer_type_t abort_type)

Abort I2S Tx/Rx operations.

Enumeration Documentation#

i2s_event_typedef_t#

i2s_event_typedef_t

Enumeration for different I2S callback events.

Enumerator
SL_I2S_SEND_COMPLETE	Send complete event.
SL_I2S_RECEIVE_COMPLETE	Receive lost event.
SL_I2S_TX_UNDERFLOW	Tx underflow event.
SL_I2S_RX_OVERFLOW	Rx Overflow event.
SL_I2S_FRAME_ERROR	Frame error event.

Definition at line 56 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_power_state_t#

sl_i2s_power_state_t

Enumeration for I2S power state.

Enumerator
SL_I2S_POWER_OFF	Power mode OFF.
SL_I2S_LOW_POWER	Low power mode.
SL_I2S_FULL_POWER	Full power mode.

Definition at line 65 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_mode_t#

sl_i2s_mode_t

Enumeration for I2S master and slave modes.

Enumerator
SL_I2S_MASTER	I2S master mode.
SL_I2S_SLAVE	I2S slave mode.

Definition at line 72 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_sai_protocol_t#

sl_sai_protocol_t

Enumeration for SAI protocol type.

Enumerator
SL_I2S_PROTOCOL	I2S protocol.
SL_PCM_PROTOCOL	PCM protocol, currently not supported in the driver.

Definition at line 78 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_sync_t#

sl_i2s_sync_t

Enumeration for I2S SYNC/ASYNC modes.

Enumerator
SL_I2S_SYNC	I2S synchronous mode.
SL_I2S_ASYNC	I2S asynchronous mode.

Definition at line 84 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_xfer_type_t#

sl_i2s_xfer_type_t

Enumeration for I2S transfer type.

Enumerator
SL_I2S_TRANSMIT	I2S transmit.
SL_I2S_RECEIVE	I2S receive.
SL_I2S_TRANSMIT_CONTROL	I2S receive.
SL_I2S_RECEIVE_CONTROL	I2S receive.
SL_I2S_SEND_ABORT	I2S abort transmit.
SL_I2S_RECEIVE_ABORT	I2S abort receive.

Definition at line 90 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_xfer_size_t#

sl_i2s_xfer_size_t

Enumeration for I2S transfer data size.

Enumerator
SL_I2S_DATA_SIZE16	16 bits
SL_I2S_DATA_SIZE32	32 bits

Definition at line 100 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_data_resolution_t#

sl_i2s_data_resolution_t

Enumeration for I2S audio data resolutions.

Enumerator
SL_I2S_RESOLUTION_12	12 bit resolution
SL_I2S_RESOLUTION_16	16 bit resolution
SL_I2S_RESOLUTION_20	20 bit resolution
SL_I2S_RESOLUTION_24	24 bit resolution
SL_I2S_RESOLUTION_32	32 bit resolution

Definition at line 106 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_sampling_rate_t#

sl_i2s_sampling_rate_t

Enumeration for I2S sample rates.

Enumerator
SL_I2S_SAMPLING_RATE_8000	8kHz
SL_I2S_SAMPLING_RATE_11025	11.025kHz
SL_I2S_SAMPLING_RATE_16000	16kHz
SL_I2S_SAMPLING_RATE_22050	22.05kHz
SL_I2S_SAMPLING_RATE_24000	24kHz
SL_I2S_SAMPLING_RATE_32000	32kHz
SL_I2S_SAMPLING_RATE_44100	44.1kHz
SL_I2S_SAMPLING_RATE_48000	48kHz
SL_I2S_SAMPLING_RATE_88200	88.2kHz
SL_I2S_SAMPLING_RATE_96000	96kHz
SL_I2S_SAMPLING_RATE_192000	192kHz

Definition at line 115 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

Typedef Documentation#

sl_i2s_signal_event_t#

typedef ARM_SAI_SignalEvent_t sl_i2s_signal_event_t

Renamed signal event structure.

Definition at line 50 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_status_t#

typedef ARM_SAI_STATUS sl_i2s_status_t

Renamed status structure.

Definition at line 51 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_driver_t#

typedef ARM_DRIVER_SAI sl_i2s_driver_t

Renamed I2S driver structure.

Definition at line 52 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_i2s_handle_t#

typedef const void* sl_i2s_handle_t

Created I2S handle type.

Definition at line 53 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

Function Documentation#

sl_si91x_i2s_init#

sl_status_t sl_si91x_i2s_init (uint32_t i2s_instance, sl_i2s_handle_t * i2s_handle)

Initialize the I2S.

Parameters

[in]	i2s_instance	instance
[in]	i2s_handle	Double Pointer to the I2S driver handle

Pass the address of the pointer for storing the I2S handle, which can be used in future for other function calls.

Pre-conditions:
- none

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument
- SL_STATUS_BUSY (0x0004) - Driver is busy

Definition at line 165 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_deinit#

sl_status_t sl_si91x_i2s_deinit (sl_i2s_handle_t * i2s_handle)

Uninitialize I2S peripheral.

Parameters

[in]

i2s_handle

Pointer to the I2S driver handle

Pre-conditions:
- sl_si91x_i2s_init

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument

Definition at line 180 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_configure_power_mode#

sl_status_t sl_si91x_i2s_configure_power_mode (sl_i2s_handle_t i2s_handle, sl_i2s_power_state_t state)

Change the power mode of I2S, the supported modes are.

Parameters

[in]	i2s_handle	Pointer to the I2S driver handle
[in]	state	state

POWER_OFF
FULL_POWER

Pre-conditions:
- sl_si91x_i2s_init

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument

Definition at line 198 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_config_transmit_receive#

sl_status_t sl_si91x_i2s_config_transmit_receive (sl_i2s_handle_t i2s_handle, sl_i2s_xfer_config_t * xfer_config)

Configure transmitter/Receiver parameters for I2S transfer.

Parameters

[in]	i2s_handle	Pointer to the I2S driver handle
[in]	xfer_config	of structure which stores transfer parameters

Pre-conditions:
- sl_si91x_i2s_init
- sl_si91x_i2s_configure_power_mode

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument

Definition at line 215 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_transmit_data#

sl_status_t sl_si91x_i2s_transmit_data (sl_i2s_handle_t i2s_handle, const void * data, uint32_t size)

Configure I2S peripheral DMA channel to send data.

Parameters

[in]	i2s_handle	Pointer to the I2S driver handle
[in]	data	data
[in]	size	size

Pre-conditions:

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument

Definition at line 234 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_receive_data#

sl_status_t sl_si91x_i2s_receive_data (sl_i2s_handle_t i2s_handle, const void * data, uint32_t size)

Configure I2S peripheral DMA channel to receive data.

Parameters

[in]	i2s_handle	Pointer to the I2S driver handle
[in]	data	data
[in]	size	size

Pre-conditions:

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument

Definition at line 253 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_register_event_callback#

sl_status_t sl_si91x_i2s_register_event_callback (sl_i2s_handle_t i2s_handle, sl_i2s_signal_event_t callback_event)

Parameters

[in]	i2s_handle	Pointer to the I2S driver handle
[in]	callback_event	Pointer to the function which needs to be called at the time of interrupt

Pre-conditions:
- none

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_NULL_POINTER (0x0022) - The parameter is a null pointer
- SL_STATUS_BUSY (0x0004) - Driver is busy

Definition at line 269 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_unregister_event_callback#

sl_status_t sl_si91x_i2s_unregister_event_callback (sl_i2s_handle_t i2s_handle)

Un-register the user callback function.

Parameters

[in] i2s_handle

Pre-conditions:
- sl_si91x_i2s_register_event_callback

Returns

none

Definition at line 281 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_get_transmit_data_count#

uint32_t sl_si91x_i2s_get_transmit_data_count (sl_i2s_handle_t i2s_handle)

Get the transmit data count of I2S.

Parameters

[in]

i2s_handle

Pointer to the I2S driver handle

Pre-conditions:

Returns

uint32_t value of the tx data count

Definition at line 296 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_get_receive_data_count#

uint32_t sl_si91x_i2s_get_receive_data_count (sl_i2s_handle_t i2s_handle)

Get the receive data count of I2S.

Parameters

[in]

i2s_handle

Pointer to the I2S driver handle

Pre-conditions:

Returns

uint32_t value of the rx data count

Definition at line 311 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_get_version#

sl_i2s_version_t sl_si91x_i2s_get_version (void )

Get the release, sqa, and dev version of I2S.

Parameters

[in]

Pre-conditions:
- none

Returns

(sl_i2s_version_t) type structure

Definition at line 323 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_get_status#

sl_i2s_status_t sl_si91x_i2s_get_status (sl_i2s_handle_t i2s_handle)

Get the transfer status I2S.

Parameters

[in]

i2s_handle

Pointer to the I2S driver handle

Pre-conditions:

Returns

(sl_i2s_status_t) type structure

Definition at line 337 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h

sl_si91x_i2s_end_transfer#

sl_status_t sl_si91x_i2s_end_transfer (sl_i2s_handle_t i2s_handle, sl_i2s_xfer_type_t abort_type)

Abort I2S Tx/Rx operations.

Parameters

[in]	i2s_handle	Pointer to the I2S driver handle
[in]	abort_type	type, ARM_SAI_ABORT_SEND/ARM_SAI_ABORT_RECEIVE

Pre-conditions:
- sl_si91x_i2s_init
- sl_si91x_i2s_configure_power_mode
- sl_si91x_i2s_config_transmit_receive
- sl_si91x_i2s_transmit_data/sl_si91x_i2s_receive_data

Returns

status 0 if successful, else error code as follow
- SL_STATUS_OK (0x0000) - Success
- SL_STATUS_INVALID_PARAMETER (0x0021) - Parameters are invalid
- SL_STATUS_NULL_POINTER (0x0022) - Invalid null pointer received as argument

Definition at line 356 of file components/device/silabs/si91x/mcu/drivers/unified_api/inc/sl_si91x_i2s.h