// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef __ESP_GAP_BT_API_H__
#define __ESP_GAP_BT_API_H__
#include <stdint.h>
#include "esp_err.h"
#include "esp_bt_defs.h"
#ifdef __cplusplus
extern "C" {
#endif
/// RSSI threshold
#define ESP_BT_GAP_RSSI_HIGH_THRLD -20 /*!< High RSSI threshold */
#define ESP_BT_GAP_RSSI_LOW_THRLD -45 /*!< Low RSSI threshold */
/// Class of device
typedef struct {
uint32_t reserved_2: 2; /*!< undefined */
uint32_t minor: 6; /*!< minor class */
uint32_t major: 5; /*!< major class */
uint32_t service: 11; /*!< service class */
uint32_t reserved_8: 8; /*!< undefined */
} esp_bt_cod_t;
/// class of device settings
typedef enum {
ESP_BT_SET_COD_MAJOR_MINOR = 0x01, /*!< overwrite major, minor class */
ESP_BT_SET_COD_SERVICE_CLASS = 0x02, /*!< set the bits in the input, the current bit will remain */
ESP_BT_CLR_COD_SERVICE_CLASS = 0x04, /*!< clear the bits in the input, others will remain */
ESP_BT_SET_COD_ALL = 0x08, /*!< overwrite major, minor, set the bits in service class */
ESP_BT_INIT_COD = 0x0a, /*!< overwrite major, minor, and service class */
} esp_bt_cod_mode_t;
/// Discoverability and Connectability mode
typedef enum {
ESP_BT_SCAN_MODE_NONE = 0, /*!< Neither discoverable nor connectable */
ESP_BT_SCAN_MODE_CONNECTABLE, /*!< Connectable but not discoverable */
ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE /*!< both discoverable and connectable */
} esp_bt_scan_mode_t;
/// Bluetooth Device Property type
typedef enum {
ESP_BT_GAP_DEV_PROP_BDNAME = 1, /*!< Bluetooth device name, value type is int8_t [] */
ESP_BT_GAP_DEV_PROP_COD, /*!< Class of Device, value type is uint32_t */
ESP_BT_GAP_DEV_PROP_RSSI, /*!< Received Signal strength Indication, value type is int8_t, ranging from -128 to 127 */
ESP_BT_GAP_DEV_PROP_EIR, /*!< Extended Inquiry Response, value type is uint8_t [] */
} esp_bt_gap_dev_prop_type_t;
/// Maximum bytes of Bluetooth device name
#define ESP_BT_GAP_MAX_BDNAME_LEN (248)
/// Maximum size of EIR Significant part
#define ESP_BT_GAP_EIR_DATA_LEN (240)
/// Bluetooth Device Property Descriptor
typedef struct {
esp_bt_gap_dev_prop_type_t type; /*!< device property type */
int len; /*!< device property value length */
void *val; /*!< device property value */
} esp_bt_gap_dev_prop_t;
/// Extended Inquiry Response data type
typedef enum {
ESP_BT_EIR_TYPE_FLAGS = 0x01, /*!< Flag with information such as BR/EDR and LE support */
ESP_BT_EIR_TYPE_INCMPL_16BITS_UUID = 0x02, /*!< Incomplete list of 16-bit service UUIDs */
ESP_BT_EIR_TYPE_CMPL_16BITS_UUID = 0x03, /*!< Complete list of 16-bit service UUIDs */
ESP_BT_EIR_TYPE_INCMPL_32BITS_UUID = 0x04, /*!< Incomplete list of 32-bit service UUIDs */
ESP_BT_EIR_TYPE_CMPL_32BITS_UUID = 0x05, /*!< Complete list of 32-bit service UUIDs */
ESP_BT_EIR_TYPE_INCMPL_128BITS_UUID = 0x06, /*!< Incomplete list of 128-bit service UUIDs */
ESP_BT_EIR_TYPE_CMPL_128BITS_UUID = 0x07, /*!< Complete list of 128-bit service UUIDs */
ESP_BT_EIR_TYPE_SHORT_LOCAL_NAME = 0x08, /*!< Shortened Local Name */
ESP_BT_EIR_TYPE_CMPL_LOCAL_NAME = 0x09, /*!< Complete Local Name */
ESP_BT_EIR_TYPE_TX_POWER_LEVEL = 0x0a, /*!< Tx power level, value is 1 octet ranging from -127 to 127, unit is dBm*/
ESP_BT_EIR_TYPE_MANU_SPECIFIC = 0xff, /*!< Manufacturer specific data */
} esp_bt_eir_type_t;
/// Major service class field of Class of Device, mutiple bits can be set
typedef enum {
ESP_BT_COD_SRVC_NONE = 0, /*!< None indicates an invalid value */
ESP_BT_COD_SRVC_LMTD_DISCOVER = 0x1, /*!< Limited Discoverable Mode */
ESP_BT_COD_SRVC_POSITIONING = 0x8, /*!< Positioning (Location identification) */
ESP_BT_COD_SRVC_NETWORKING = 0x10, /*!< Networking, e.g. LAN, Ad hoc */
ESP_BT_COD_SRVC_RENDERING = 0x20, /*!< Rendering, e.g. Printing, Speakers */
ESP_BT_COD_SRVC_CAPTURING = 0x40, /*!< Capturing, e.g. Scanner, Microphone */
ESP_BT_COD_SRVC_OBJ_TRANSFER = 0x80, /*!< Object Transfer, e.g. v-Inbox, v-Folder */
ESP_BT_COD_SRVC_AUDIO = 0x100, /*!< Audio, e.g. Speaker, Microphone, Headset service */
ESP_BT_COD_SRVC_TELEPHONY = 0x200, /*!< Telephony, e.g. Cordless telephony, Modem, Headset service */
ESP_BT_COD_SRVC_INFORMATION = 0x400, /*!< Information, e.g., WEB-server, WAP-server */
} esp_bt_cod_srvc_t;
typedef enum{
ESP_BT_PIN_TYPE_VARIABLE = 0, /*!< Refer to BTM_PIN_TYPE_VARIABLE */
ESP_BT_PIN_TYPE_FIXED = 1, /*!< Refer to BTM_PIN_TYPE_FIXED */
} esp_bt_pin_type_t;
#define ESP_BT_PIN_CODE_LEN 16 /*!< Max pin code length */
typedef uint8_t esp_bt_pin_code_t[ESP_BT_PIN_CODE_LEN]; /*!< Pin Code (upto 128 bits) MSB is 0 */
typedef enum {
ESP_BT_SP_IOCAP_MODE = 0, /*!< Set IO mode */
//ESP_BT_SP_OOB_DATA, //TODO /*!< Set OOB data */
} esp_bt_sp_param_t;
/* relate to BTM_IO_CAP_xxx in stack/btm_api.h */
#define ESP_BT_IO_CAP_OUT 0 /*!< DisplayOnly */ /* relate to BTM_IO_CAP_OUT in stack/btm_api.h */
#define ESP_BT_IO_CAP_IO 1 /*!< DisplayYesNo */ /* relate to BTM_IO_CAP_IO in stack/btm_api.h */
#define ESP_BT_IO_CAP_IN 2 /*!< KeyboardOnly */ /* relate to BTM_IO_CAP_IN in stack/btm_api.h */
#define ESP_BT_IO_CAP_NONE 3 /*!< NoInputNoOutput */ /* relate to BTM_IO_CAP_NONE in stack/btm_api.h */
typedef uint8_t esp_bt_io_cap_t; /*!< combination of the io capability */
/// Bits of major service class field
#define ESP_BT_COD_SRVC_BIT_MASK (0xffe000) /*!< Major service bit mask */
#define ESP_BT_COD_SRVC_BIT_OFFSET (13) /*!< Major service bit offset */
/// Major device class field of Class of Device
typedef enum {
ESP_BT_COD_MAJOR_DEV_MISC = 0, /*!< Miscellaneous */
ESP_BT_COD_MAJOR_DEV_COMPUTER = 1, /*!< Computer */
ESP_BT_COD_MAJOR_DEV_PHONE = 2, /*!< Phone(cellular, cordless, pay phone, modem */
ESP_BT_COD_MAJOR_DEV_LAN_NAP = 3, /*!< LAN, Network Access Point */
ESP_BT_COD_MAJOR_DEV_AV = 4, /*!< Audio/Video(headset, speaker, stereo, video display, VCR */
ESP_BT_COD_MAJOR_DEV_PERIPHERAL = 5, /*!< Peripheral(mouse, joystick, keyboard) */
ESP_BT_COD_MAJOR_DEV_IMAGING = 6, /*!< Imaging(printer, scanner, camera, display */
ESP_BT_COD_MAJOR_DEV_WEARABLE = 7, /*!< Wearable */
ESP_BT_COD_MAJOR_DEV_TOY = 8, /*!< Toy */
ESP_BT_COD_MAJOR_DEV_HEALTH = 9, /*!< Health */
ESP_BT_COD_MAJOR_DEV_UNCATEGORIZED = 31, /*!< Uncategorized: device not specified */
} esp_bt_cod_major_dev_t;
/// Bits of major device class field
#define ESP_BT_COD_MAJOR_DEV_BIT_MASK (0x1f00) /*!< Major device bit mask */
#define ESP_BT_COD_MAJOR_DEV_BIT_OFFSET (8) /*!< Major device bit offset */
/// Bits of minor device class field
#define ESP_BT_COD_MINOR_DEV_BIT_MASK (0xfc) /*!< Minor device bit mask */
#define ESP_BT_COD_MINOR_DEV_BIT_OFFSET (2) /*!< Minor device bit offset */
/// Bits of format type
#define ESP_BT_COD_FORMAT_TYPE_BIT_MASK (0x03) /*!< Format type bit mask */
#define ESP_BT_COD_FORMAT_TYPE_BIT_OFFSET (0) /*!< Format type bit offset */
/// Class of device format type 1
#define ESP_BT_COD_FORMAT_TYPE_1 (0x00)
/** Bluetooth Device Discovery state */
typedef enum {
ESP_BT_GAP_DISCOVERY_STOPPED, /*!< device discovery stopped */
ESP_BT_GAP_DISCOVERY_STARTED, /*!< device discovery started */
} esp_bt_gap_discovery_state_t;
/// BT GAP callback events
typedef enum {
ESP_BT_GAP_DISC_RES_EVT = 0, /*!< device discovery result event */
ESP_BT_GAP_DISC_STATE_CHANGED_EVT, /*!< discovery state changed event */
ESP_BT_GAP_RMT_SRVCS_EVT, /*!< get remote services event */
ESP_BT_GAP_RMT_SRVC_REC_EVT, /*!< get remote service record event */
ESP_BT_GAP_AUTH_CMPL_EVT, /*!< AUTH complete event */
ESP_BT_GAP_PIN_REQ_EVT, /*!< Legacy Pairing Pin code request */
ESP_BT_GAP_CFM_REQ_EVT, /*!< Simple Pairing User Confirmation request. */
ESP_BT_GAP_KEY_NOTIF_EVT, /*!< Simple Pairing Passkey Notification */
ESP_BT_GAP_KEY_REQ_EVT, /*!< Simple Pairing Passkey request */
ESP_BT_GAP_READ_RSSI_DELTA_EVT, /*!< read rssi event */
ESP_BT_GAP_EVT_MAX,
} esp_bt_gap_cb_event_t;
/** Inquiry Mode */
typedef enum {
ESP_BT_INQ_MODE_GENERAL_INQUIRY, /*!< General inquiry mode */
ESP_BT_INQ_MODE_LIMITED_INQUIRY, /*!< Limited inquiry mode */
} esp_bt_inq_mode_t;
/** Minimum and Maximum inquiry length*/
#define ESP_BT_GAP_MIN_INQ_LEN (0x01) /*!< Minimum inquiry duration, unit is 1.28s */
#define ESP_BT_GAP_MAX_INQ_LEN (0x30) /*!< Maximum inquiry duration, unit is 1.28s */
/// A2DP state callback parameters
typedef union {
/**
* @brief ESP_BT_GAP_DISC_RES_EVT
*/
struct disc_res_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
int num_prop; /*!< number of properties got */
esp_bt_gap_dev_prop_t *prop; /*!< properties discovered from the new device */
} disc_res; /*!< discovery result parameter struct */
/**
* @brief ESP_BT_GAP_DISC_STATE_CHANGED_EVT
*/
struct disc_state_changed_param {
esp_bt_gap_discovery_state_t state; /*!< discovery state */
} disc_st_chg; /*!< discovery state changed parameter struct */
/**
* @brief ESP_BT_GAP_RMT_SRVCS_EVT
*/
struct rmt_srvcs_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
esp_bt_status_t stat; /*!< service search status */
int num_uuids; /*!< number of UUID in uuid_list */
esp_bt_uuid_t *uuid_list; /*!< list of service UUIDs of remote device */
} rmt_srvcs; /*!< services of remote device parameter struct */
/**
* @brief ESP_BT_GAP_RMT_SRVC_REC_EVT
*/
struct rmt_srvc_rec_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
esp_bt_status_t stat; /*!< service search status */
} rmt_srvc_rec; /*!< specific service record from remote device parameter struct */
/**
* @brief ESP_BT_GAP_READ_RSSI_DELTA_EVT *
*/
struct read_rssi_delta_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
esp_bt_status_t stat; /*!< read rssi status */
int8_t rssi_delta; /*!< rssi delta value range -128 ~127, The value zero indicates that the RSSI is inside the Golden Receive Power Range, the Golden Receive Power Range is from ESP_BT_GAP_RSSI_LOW_THRLD to ESP_BT_GAP_RSSI_HIGH_THRLD */
} read_rssi_delta; /*!< read rssi parameter struct */
/**
* @brief ESP_BT_GAP_AUTH_CMPL_EVT
*/
struct auth_cmpl_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
esp_bt_status_t stat; /*!< authentication complete status */
uint8_t device_name[ESP_BT_GAP_MAX_BDNAME_LEN + 1]; /*!< device name */
} auth_cmpl; /*!< authentication complete parameter struct */
/**
* @brief ESP_BT_GAP_PIN_REQ_EVT
*/
struct pin_req_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
bool min_16_digit; /*!< TRUE if the pin returned must be at least 16 digits */
} pin_req; /*!< pin request parameter struct */
/**
* @brief ESP_BT_GAP_CFM_REQ_EVT
*/
struct cfm_req_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
uint32_t num_val; /*!< the numeric value for comparison. */
} cfm_req; /*!< confirm request parameter struct */
/**
* @brief ESP_BT_GAP_KEY_NOTIF_EVT
*/
struct key_notif_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
uint32_t passkey; /*!< the numeric value for passkey entry. */
} key_notif; /*!< passkey notif parameter struct */
/**
* @brief ESP_BT_GAP_KEY_REQ_EVT
*/
struct key_req_param {
esp_bd_addr_t bda; /*!< remote bluetooth device address*/
} key_req; /*!< passkey request parameter struct */
} esp_bt_gap_cb_param_t;
/**
* @brief bluetooth GAP callback function type
* @param event : Event type
* @param param : Pointer to callback parameter
*/
typedef void (* esp_bt_gap_cb_t)(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param);
/**
* @brief get major service field of COD
* @param[in] cod: Class of Device
* @return major service bits
*/
inline uint32_t esp_bt_gap_get_cod_srvc(uint32_t cod)
{
return (cod & ESP_BT_COD_SRVC_BIT_MASK) >> ESP_BT_COD_SRVC_BIT_OFFSET;
}
/**
* @brief get major device field of COD
* @param[in] cod: Class of Device
* @return major device bits
*/
inline uint32_t esp_bt_gap_get_cod_major_dev(uint32_t cod)
{
return (cod & ESP_BT_COD_MAJOR_DEV_BIT_MASK) >> ESP_BT_COD_MAJOR_DEV_BIT_OFFSET;
}
/**
* @brief get minor service field of COD
* @param[in] cod: Class of Device
* @return minor service bits
*/
inline uint32_t esp_bt_gap_get_cod_minor_dev(uint32_t cod)
{
return (cod & ESP_BT_COD_MINOR_DEV_BIT_MASK) >> ESP_BT_COD_MINOR_DEV_BIT_OFFSET;
}
/**
* @brief get format type of COD
* @param[in] cod: Class of Device
* @return format type
*/
inline uint32_t esp_bt_gap_get_cod_format_type(uint32_t cod)
{
return (cod & ESP_BT_COD_FORMAT_TYPE_BIT_MASK);
}
/**
* @brief decide the integrity of COD
* @param[in] cod: Class of Device
* @return
* - true if cod is valid
* - false otherise
*/
inline bool esp_bt_gap_is_valid_cod(uint32_t cod)
{
if (esp_bt_gap_get_cod_format_type(cod) == ESP_BT_COD_FORMAT_TYPE_1 &&
esp_bt_gap_get_cod_srvc(cod) != ESP_BT_COD_SRVC_NONE) {
return true;
}
return false;
}
/**
* @brief register callback function. This function should be called after esp_bluedroid_enable() completes successfully
*
* @return
* - ESP_OK : Succeed
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_register_callback(esp_bt_gap_cb_t callback);
/**
* @brief Set discoverability and connectability mode for legacy bluetooth. This function should
* be called after esp_bluedroid_enable() completes successfully
*
* @param[in] mode : one of the enums of bt_scan_mode_t
*
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_ARG: if argument invalid
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_set_scan_mode(esp_bt_scan_mode_t mode);
/**
* @brief Start device discovery. This function should be called after esp_bluedroid_enable() completes successfully.
* esp_bt_gap_cb_t will is called with ESP_BT_GAP_DISC_STATE_CHANGED_EVT if discovery is started or halted.
* esp_bt_gap_cb_t will is called with ESP_BT_GAP_DISC_RES_EVT if discovery result is got.
*
* @param[in] mode - inquiry mode
* @param[in] inq_len - inquiry duration in 1.28 sec units, ranging from 0x01 to 0x30
* @param[in] num_rsps - number of inquiry responses that can be received, value 0 indicates an unlimited number of responses
*
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_ERR_INVALID_ARG: if invalid parameters are provided
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_start_discovery(esp_bt_inq_mode_t mode, uint8_t inq_len, uint8_t num_rsps);
/**
* @brief Cancel device discovery. This function should be called after esp_bluedroid_enable() completes successfully
* esp_bt_gap_cb_t will is called with ESP_BT_GAP_DISC_STATE_CHANGED_EVT if discovery is stopped.
*
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_cancel_discovery(void);
/**
* @brief Start SDP to get remote services. This function should be called after esp_bluedroid_enable() completes successfully.
* esp_bt_gap_cb_t will is called with ESP_BT_GAP_RMT_SRVCS_EVT after service discovery ends
*
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_get_remote_services(esp_bd_addr_t remote_bda);
/**
* @brief Start SDP to look up the service matching uuid on the remote device. This function should be called after
* esp_bluedroid_enable() completes successfully
*
* esp_bt_gap_cb_t will is called with ESP_BT_GAP_RMT_SRVC_REC_EVT after service discovery ends
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_get_remote_service_record(esp_bd_addr_t remote_bda, esp_bt_uuid_t *uuid);
/**
* @brief This function is called to get EIR data for a specific type.
*
* @param[in] eir - pointer of raw eir data to be resolved
* @param[in] type - specific EIR data type
* @param[out] length - return the length of EIR data excluding fields of length and data type
*
* @return pointer of starting position of eir data excluding eir data type, NULL if not found
*
*/
uint8_t *esp_bt_gap_resolve_eir_data(uint8_t *eir, esp_bt_eir_type_t type, uint8_t *length);
/**
* @brief This function is called to set class of device.
* esp_bt_gap_cb_t will is called with ESP_BT_GAP_SET_COD_EVT after set COD ends
* Some profile have special restrictions on class of device,
* changes may cause these profile do not work
*
* @param[in] cod - class of device
* @param[in] mode - setting mode
*
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_ERR_INVALID_ARG: if param is invalid
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_set_cod(esp_bt_cod_t cod, esp_bt_cod_mode_t mode);
/**
* @brief This function is called to get class of device.
*
* @param[out] cod - class of device
*
* @return
* - ESP_OK : Succeed
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_get_cod(esp_bt_cod_t *cod);
/**
* @brief This function is called to read RSSI delta by address after connected. The RSSI value returned by ESP_BT_GAP_READ_RSSI_DELTA_EVT.
*
*
* @param[in] remote_addr - remote device address, corresponding to a certain connection handle.
* @return
* - ESP_OK : Succeed
* - ESP_FAIL: others
*
*/
esp_err_t esp_bt_gap_read_rssi_delta(esp_bd_addr_t remote_addr);
/**
* @brief Removes a device from the security database list of
* peer device.
*
* @param[in] bd_addr : BD address of the peer device
*
* @return - ESP_OK : success
* - ESP_FAIL : failed
*
*/
esp_err_t esp_bt_gap_remove_bond_device(esp_bd_addr_t bd_addr);
/**
* @brief Get the device number from the security database list of peer device.
* It will return the device bonded number immediately.
*
* @return - >= 0 : bonded devices number.
* - ESP_FAIL : failed
*
*/
int esp_bt_gap_get_bond_device_num(void);
/**
* @brief Get the device from the security database list of peer device.
* It will return the device bonded information immediately.
* @param[inout] dev_num: Indicate the dev_list array(buffer) size as input.
* If dev_num is large enough, it means the actual number as output.
* Suggest that dev_num value equal to esp_ble_get_bond_device_num().
*
* @param[out] dev_list: an array(buffer) of `esp_bd_addr_t` type. Use for storing the bonded devices address.
* The dev_list should be allocated by who call this API.
*
* @return
* - ESP_OK : Succeed
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - ESP_FAIL: others
*/
esp_err_t esp_bt_gap_get_bond_device_list(int *dev_num, esp_bd_addr_t *dev_list);
/**
* @brief Set pin type and default pin code for legacy pairing.
*
* @param[in] pin_type: Use variable or fixed pin.
* If pin_type is ESP_BT_PIN_TYPE_VARIABLE, pin_code and pin_code_len
* will be ignored, and ESP_BT_GAP_PIN_REQ_EVT will come when control
* requests for pin code.
* Else, will use fixed pin code and not callback to users.
* @param[in] pin_code_len: Length of pin_code
* @param[in] pin_code: Pin_code
*
* @return - ESP_OK : success
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - other : failed
*/
esp_err_t esp_bt_gap_set_pin(esp_bt_pin_type_t pin_type, uint8_t pin_code_len, esp_bt_pin_code_t pin_code);
/**
* @brief Reply the pin_code to the peer device for legacy pairing
* when ESP_BT_GAP_PIN_REQ_EVT is coming.
*
* @param[in] bd_addr: BD address of the peer
* @param[in] accept: Pin_code reply successful or declined.
* @param[in] pin_code_len: Length of pin_code
* @param[in] pin_code: Pin_code
*
* @return - ESP_OK : success
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - other : failed
*/
esp_err_t esp_bt_gap_pin_reply(esp_bd_addr_t bd_addr, bool accept, uint8_t pin_code_len, esp_bt_pin_code_t pin_code);
#if (BT_SSP_INCLUDED == TRUE)
/**
* @brief Set a GAP security parameter value. Overrides the default value.
*
* @param[in] param_type : the type of the param which is to be set
* @param[in] value : the param value
* @param[in] len : the length of the param value
*
* @return - ESP_OK : success
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - other : failed
*
*/
esp_err_t esp_bt_gap_set_security_param(esp_bt_sp_param_t param_type,
void *value, uint8_t len);
/**
* @brief Reply the key value to the peer device in the legacy connection stage.
*
* @param[in] bd_addr : BD address of the peer
* @param[in] accept : passkey entry successful or declined.
* @param[in] passkey : passkey value, must be a 6 digit number,
* can be lead by 0.
*
* @return - ESP_OK : success
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - other : failed
*
*/
esp_err_t esp_bt_gap_ssp_passkey_reply(esp_bd_addr_t bd_addr, bool accept, uint32_t passkey);
/**
* @brief Reply the confirm value to the peer device in the legacy connection stage.
*
* @param[in] bd_addr : BD address of the peer device
* @param[in] accept : numbers to compare are the same or different.
*
* @return - ESP_OK : success
* - ESP_ERR_INVALID_STATE: if bluetooth stack is not yet enabled
* - other : failed
*
*/
esp_err_t esp_bt_gap_ssp_confirm_reply(esp_bd_addr_t bd_addr, bool accept);
#endif /*(BT_SSP_INCLUDED == TRUE)*/
#ifdef __cplusplus
}
#endif
#endif /* __ESP_GAP_BT_API_H__ */