L2CAP transfer#

sl_bt_l2cap_transfer_transfer_mode_t#

sl_bt_l2cap_transfer_transfer_mode_t

Define sender and receiver sides.

sl_bt_l2cap_transfer_transfer_handle_t#

typedef struct sl_bt_l2cap_transfer_transfer_s* sl_bt_l2cap_transfer_transfer_handle_t

Forward declaration.

sl_bt_l2cap_transfer_data_received_cb_t#

typedef uint16_t(* sl_bt_l2cap_transfer_data_received_cb_t) (sl_bt_l2cap_transfer_transfer_handle_t transfer_object, uint32_t offset, uint16_t size, uint8_t *data) )(sl_bt_l2cap_transfer_transfer_handle_t transfer_object, uint32_t offset, uint16_t size, uint8_t *data)

Callback is invoked when data on L2CAP channel is received.

Returns

• credit Requested credit that should be sent to the other side

sl_bt_l2cap_transfer_transfer_finished_cb_t#

typedef void(* sl_bt_l2cap_transfer_transfer_finished_cb_t) (sl_bt_l2cap_transfer_transfer_handle_t transfer_object, sl_status_t error_code) )(sl_bt_l2cap_transfer_transfer_handle_t transfer_object, sl_status_t error_code)

Callback is invoked when data transfer on L2CAP channel is finished.

sl_bt_l2cap_transfer_data_transmit_cb_t#

typedef void(* sl_bt_l2cap_transfer_data_transmit_cb_t) (sl_bt_l2cap_transfer_transfer_handle_t transfer_object, uint32_t offset, uint32_t size, uint8_t **data, uint32_t *data_size) )(sl_bt_l2cap_transfer_transfer_handle_t transfer_object, uint32_t offset, uint32_t size, uint8_t **data, uint32_t *data_size)

Callback for data transmission on L2CAP channel. Called when data is about to transmit on the channel to provide the next data packet.

sl_bt_l2cap_transfer_channel_opened_cb_t#

typedef void(* sl_bt_l2cap_transfer_channel_opened_cb_t) (sl_bt_l2cap_transfer_transfer_handle_t transfer_object) )(sl_bt_l2cap_transfer_transfer_handle_t transfer_object)

Callback is invoked when a channel is opened.

sl_bt_l2cap_transfer_callbacks_t#

typedef struct callbacks_s sl_bt_l2cap_transfer_callbacks_t

Callback functions used by the transfer object.

sl_bt_l2cap_transfer_transfer_t#

typedef struct sl_bt_l2cap_transfer_transfer_s sl_bt_l2cap_transfer_transfer_t

Transfer structure that is used for the L2CAP data channels.

sl_bt_l2cap_transfer_start_data_transfer#

sl_status_t sl_bt_l2cap_transfer_start_data_transfer (sl_bt_l2cap_transfer_transfer_t * transfer, bool open_channel)

Start data transfer process. Both sides should call this function and decide which side will send the open request.

It is important that the transfer object shall be well configured to create a valid open request.

sl_bt_l2cap_transfer_increase_credit#

sl_status_t sl_bt_l2cap_transfer_increase_credit (sl_bt_l2cap_transfer_transfer_t * transfer, uint16_t credit)

API call to send credit to the initiator.

Returns

• SL_STATUS_OK if successful. Error code otherwise

sl_bt_l2cap_transfer_abort_transfer#

sl_status_t sl_bt_l2cap_transfer_abort_transfer (sl_bt_l2cap_transfer_transfer_t * transfer)

API call to abort L2CAP data transfer - will invoke a close channel event

Returns

• SL_STATUS_OK if successful. Error code otherwise

sl_bt_l2cap_transfer_check_progress#

sl_status_t sl_bt_l2cap_transfer_check_progress (sl_bt_l2cap_transfer_transfer_t * transfer)

Check if a transfer is in progress

sl_bt_l2cap_transfer_open_prior_channel#

sl_status_t sl_bt_l2cap_transfer_open_prior_channel (sl_bt_l2cap_transfer_transfer_t * transfer)

Open prior channel

Returns

• status of the operation

SL_BT_L2CAP_TRANSFER_CONFIG_ACCEPT_PRIOR_CHANNELS#

#define SL_BT_L2CAP_TRANSFER_CONFIG_ACCEPT_PRIOR_CHANNELS

1

SL_BT_L2CAP_TRANSFER_CONFIG_PRIOR_CHANNEL_COUNT#

#define SL_BT_L2CAP_TRANSFER_CONFIG_PRIOR_CHANNEL_COUNT

SL_BT_CONFIG_MAX_CONNECTIONS

SL_BT_L2CAP_TRANSFER_MIN_SDU#

#define SL_BT_L2CAP_TRANSFER_MIN_SDU

23

Channel parameter limit definitions.

SL_BT_L2CAP_TRANSFER_MAX_SDU#

#define SL_BT_L2CAP_TRANSFER_MAX_SDU

65533

SL_BT_L2CAP_TRANSFER_MIN_PDU#

#define SL_BT_L2CAP_TRANSFER_MIN_PDU

23

SL_BT_L2CAP_TRANSFER_MAX_PDU#

#define SL_BT_L2CAP_TRANSFER_MAX_PDU

252