BT SDP APIs

Overview

Bluetooth SDP reference APIs.

API Reference

Header File

components/bt/host/bluedroid/api/include/api/esp_sdp_api.h

Functions

esp_err_t esp_sdp_register_callback(esp_sdp_cb_t callback)

This function is called to init callbacks with SDP module.

Parameters

callback – [in] pointer to the init callback function.

Returns

ESP_OK: success
other: failed

esp_err_t esp_sdp_init(void)

This function is called to init SDP module. When the operation is completed, the callback function will be called with ESP_SDP_INIT_EVT. This function should be called after esp_bluedroid_enable() completes successfully.

Returns

ESP_OK: success
other: failed

esp_err_t esp_sdp_deinit(void)

This function is called to de-initialize SDP module. The operation will remove all SDP records, then the callback function will be called with ESP_SDP_REMOVE_RECORD_COMP_EVT, and the number of ESP_SDP_REMOVE_RECORD_COMP_EVT is equal to the number of SDP records.When the operation is completed, the callback function will be called with ESP_SDP_DEINIT_EVT. This function should be called after esp_sdp_init() completes successfully.

Returns

ESP_OK: success
other: failed

esp_err_t esp_sdp_search_record(esp_bd_addr_t bd_addr, esp_bt_uuid_t uuid)

This function is called to performs service discovery for the services provided by the given peer device. When the operation is completed, the callback function will be called with ESP_SDP_SEARCH_COMP_EVT. This function must be called after esp_sdp_init() successful and before esp_sdp_deinit().

Parameters

bd_addr – [in] Remote device bluetooth device address.
uuid – [in] Service UUID of the remote device.

Returns

ESP_OK: success
other: failed

esp_err_t esp_sdp_create_record(esp_bluetooth_sdp_record_t *record)

This function is called to create SDP records. When the operation is completed, the callback function will be called with ESP_SDP_CREATE_RECORD_COMP_EVT. This function must be called after esp_sdp_init() successful and before esp_sdp_deinit().

Parameters

record – [in] The SDP record to create.

Returns

ESP_OK: success
other: failed

esp_err_t esp_sdp_remove_record(int record_handle)

This function is called to remove a SDP record. When the operation is completed, the callback function will be called with ESP_SDP_REMOVE_RECORD_COMP_EVT. This function must be called after esp_sdp_init() successful and before esp_sdp_deinit().

Parameters

record_handle – [in] The SDP record handle.

Returns

ESP_OK: success
other: failed

Unions

union esp_bluetooth_sdp_record_t

#include <esp_sdp_api.h>

SDP record parameters union.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

esp_bluetooth_sdp_mas_record_t mas: Message Access Profile - Server

esp_bluetooth_sdp_mns_record_t mns: Message Access Profile - Client (Notification Server)

esp_bluetooth_sdp_pse_record_t pse: Phone Book Profile - Server

esp_bluetooth_sdp_pce_record_t pce: Phone Book Profile - Client

esp_bluetooth_sdp_ops_record_t ops: Object Push Profile

esp_bluetooth_sdp_sap_record_t sap: SIM Access Profile

union esp_sdp_cb_param_t

#include <esp_sdp_api.h>

SDP callback parameters union.

Public Members

struct esp_sdp_cb_param_t::sdp_init_evt_param init: SDP callback param of ESP_SDP_INIT_EVT

struct esp_sdp_cb_param_t::sdp_deinit_evt_param deinit: SDP callback param of ESP_SDP_DEINIT_EVT

struct esp_sdp_cb_param_t::sdp_search_evt_param search: SDP callback param of ESP_SDP_SEARCH_COMP_EVT

struct esp_sdp_cb_param_t::sdp_create_record_evt_param create_record: SDP callback param of ESP_SDP_CREATE_RECORD_COMP_EVT

struct esp_sdp_cb_param_t::sdp_remove_record_evt_param remove_record: SDP callback param of ESP_SDP_REMOVE_RECORD_COMP_EVT

struct sdp_create_record_evt_param

#include <esp_sdp_api.h>

ESP_SDP_CREATE_RECORD_COMP_EVT.

Public Members

esp_sdp_status_t status: Status

int record_handle: SDP record handle

struct sdp_deinit_evt_param

#include <esp_sdp_api.h>

ESP_SDP_DEINIT_EVT.

Public Members

esp_sdp_status_t status: Status

struct sdp_init_evt_param

#include <esp_sdp_api.h>

ESP_SDP_INIT_EVT.

Public Members

esp_sdp_status_t status: Status

struct sdp_remove_record_evt_param

#include <esp_sdp_api.h>

ESP_SDP_REMOVE_RECORD_COMP_EVT.

Public Members

esp_sdp_status_t status: Status

struct sdp_search_evt_param

#include <esp_sdp_api.h>

ESP_SDP_SEARCH_COMP_EVT.

Public Members

esp_sdp_status_t status: Status

esp_bd_addr_t remote_addr: Remote device address

esp_bt_uuid_t sdp_uuid: Service uuid

int record_count: Number of SDP records

esp_bluetooth_sdp_record_t *records: SDP records

Structures

struct bluetooth_sdp_hdr_overlay

SDP header structure.

Public Members

esp_bluetooth_sdp_types_t type: SDP type

esp_bt_uuid_t uuid: UUID type, include uuid and uuid length, only needed to be set for RAW record creation

uint32_t service_name_length: Service name length

char *service_name: Service name

int32_t rfcomm_channel_number: RFCOMM channel number, if not used set to -1

int32_t l2cap_psm: L2CAP psm, if not used set to -1

int32_t profile_version: Profile version

int user1_ptr_len: User data1 length, only used for searching RAW record

uint8_t *user1_ptr: User data1 pointer to the raw SDP response data, only used for searching RAW record

int user2_ptr_len: User data2 length, only used for searching RAW record

uint8_t *user2_ptr: User data2 pointer, only used for searching RAW record

struct bluetooth_sdp_mas_record

Message Access Profile - Server parameters.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

uint32_t mas_instance_id: MAS Instance ID

uint32_t supported_features: Map supported features

uint32_t supported_message_types: Supported message types

struct bluetooth_sdp_mns_record

Message Access Profile - Client (Notification Server) parameters.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

uint32_t supported_features: Supported features

struct bluetooth_sdp_pse_record

Phone Book Profile - Server parameters.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

uint32_t supported_features: PBAP Supported Features

uint32_t supported_repositories: Supported Repositories

struct bluetooth_sdp_pce_record

Phone Book Profile - Client parameters.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

struct bluetooth_sdp_ops_record

Object Push Profile parameters.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

int supported_formats_list_len: Supported formats list length

uint8_t supported_formats_list[SDP_OPP_SUPPORTED_FORMATS_MAX_LENGTH]: Supported formats list

struct bluetooth_sdp_sap_record

SIM Access Profile parameters.

Public Members

esp_bluetooth_sdp_hdr_overlay_t hdr: General info

Macros

ESP_SDP_SERVER_NAME_MAX: Service name max length

SDP_OPP_SUPPORTED_FORMATS_MAX_LENGTH: OPP supported format list maximum length

ESP_SDP_UUID_MAP_MAS: Message Access Service UUID

ESP_SDP_UUID_MAP_MNS: Message Notification Service UUID

ESP_SDP_UUID_PBAP_PSE: Phone Book Server Equipment UUID

ESP_SDP_UUID_PBAP_PCE: Phone Book Client Equipment UUID

ESP_SDP_UUID_OPP: Object Push Profile UUID

ESP_SDP_UUID_SAP: SIM Access Profile UUID

ESP_SDP_UUID_DIP: Device Identification Profile UUID

ESP_SDP_BUILD_BT_UUID16(uuid16_val)

Type Definitions

typedef struct bluetooth_sdp_hdr_overlay esp_bluetooth_sdp_hdr_overlay_t: SDP header structure.

typedef struct bluetooth_sdp_mas_record esp_bluetooth_sdp_mas_record_t: Message Access Profile - Server parameters.

typedef struct bluetooth_sdp_mns_record esp_bluetooth_sdp_mns_record_t: Message Access Profile - Client (Notification Server) parameters.

typedef struct bluetooth_sdp_pse_record esp_bluetooth_sdp_pse_record_t: Phone Book Profile - Server parameters.

typedef struct bluetooth_sdp_pce_record esp_bluetooth_sdp_pce_record_t: Phone Book Profile - Client parameters.

typedef struct bluetooth_sdp_ops_record esp_bluetooth_sdp_ops_record_t: Object Push Profile parameters.

typedef struct bluetooth_sdp_sap_record esp_bluetooth_sdp_sap_record_t: SIM Access Profile parameters.

typedef void (*esp_sdp_cb_t)(esp_sdp_cb_event_t event, esp_sdp_cb_param_t *param)

SDP callback function type.

Param event: Event type
Param param: Point to callback parameter, currently is union type

Enumerations

enum esp_sdp_status_t

Values:

enumerator ESP_SDP_SUCCESS: Successful operation.

enumerator ESP_SDP_FAILURE: Generic failure.

enumerator ESP_SDP_NO_RESOURCE: No more resource

enumerator ESP_SDP_NEED_INIT: SDP module shall init first

enumerator ESP_SDP_NEED_DEINIT: SDP module shall deinit first

enumerator ESP_SDP_NO_CREATE_RECORD: No record created

enum esp_sdp_cb_event_t

SDP callback function events.

Values:

enumerator ESP_SDP_INIT_EVT: When SDP is initialized, the event comes

enumerator ESP_SDP_DEINIT_EVT: When SDP is de-initialized, the event comes

enumerator ESP_SDP_SEARCH_COMP_EVT: When SDP search complete, the event comes

enumerator ESP_SDP_CREATE_RECORD_COMP_EVT: When create SDP records complete, the event comes

enumerator ESP_SDP_REMOVE_RECORD_COMP_EVT: When remove a SDP record complete, the event comes

enum esp_bluetooth_sdp_types_t

SDP record type.

Values:

enumerator ESP_SDP_TYPE_RAW: Used to carry raw SDP search data for unknown UUIDs

enumerator ESP_SDP_TYPE_MAP_MAS: Message Access Profile - Server

enumerator ESP_SDP_TYPE_MAP_MNS: Message Access Profile - Client (Notification Server)

enumerator ESP_SDP_TYPE_PBAP_PSE: Phone Book Profile - Server

enumerator ESP_SDP_TYPE_PBAP_PCE: Phone Book Profile - Client

enumerator ESP_SDP_TYPE_OPP_SERVER: Object Push Profile

enumerator ESP_SDP_TYPE_SAP_SERVER: SIM Access Profile

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