conn.h File Reference

Bluetooth connection handling. More...

#include <stdbool.h>
#include <stdint.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci_types.h>
#include <zephyr/bluetooth/addr.h>
#include <zephyr/bluetooth/gap.h>
#include <zephyr/bluetooth/direction.h>
#include <zephyr/sys/iterable_sections.h>

Go to the source code of this file.

Data Structures
struct	bt_le_conn_param
struct	bt_conn_le_phy_info
struct	bt_conn_le_phy_param
struct	bt_conn_le_data_len_info
struct	bt_conn_le_data_len_param
struct	bt_conn_le_info
struct	bt_conn_br_info
struct	bt_security_info
struct	bt_conn_info
struct	bt_conn_le_remote_info
struct	bt_conn_br_remote_info
struct	bt_conn_remote_info
	Connection Remote Info Structure. More...
struct	bt_conn_le_tx_power
struct	bt_conn_le_create_param
struct	bt_conn_le_create_synced_param
struct	bt_conn_cb
	Connection callback structure. More...
struct	bt_conn_oob_info
struct	bt_conn_pairing_feat
	Pairing request and pairing response info structure. More...
struct	bt_conn_auth_cb
struct	bt_conn_auth_info_cb
struct	bt_br_conn_param

Macros
#define	BT_LE_CONN_PARAM_INIT(int_min, int_max, lat, to)
	Initialize connection parameters. More...
#define	BT_LE_CONN_PARAM(int_min, int_max, lat, to)
#define	BT_LE_CONN_PARAM_DEFAULT
#define	BT_CONN_LE_PHY_PARAM_INIT(_pref_tx_phy, _pref_rx_phy)
#define	BT_CONN_LE_PHY_PARAM(_pref_tx_phy, _pref_rx_phy)
#define	BT_CONN_LE_PHY_PARAM_1M
#define	BT_CONN_LE_PHY_PARAM_2M
#define	BT_CONN_LE_PHY_PARAM_CODED
#define	BT_CONN_LE_PHY_PARAM_ALL
#define	BT_CONN_LE_DATA_LEN_PARAM_INIT(_tx_max_len, _tx_max_time)
#define	BT_CONN_LE_DATA_LEN_PARAM(_tx_max_len, _tx_max_time)
#define	BT_LE_DATA_LEN_PARAM_DEFAULT
#define	BT_LE_DATA_LEN_PARAM_MAX
#define	BT_CONN_INTERVAL_TO_MS(interval)   ((interval) * 5U / 4U)
	Convert connection interval to milliseconds. More...
#define	BT_CONN_INTERVAL_TO_US(interval)   ((interval) * 1250U)
	Convert connection interval to microseconds. More...
#define	BT_CONN_ROLE_MASTER   __DEPRECATED_MACRO BT_CONN_ROLE_CENTRAL
#define	BT_CONN_ROLE_SLAVE   __DEPRECATED_MACRO BT_CONN_ROLE_PERIPHERAL
#define	BT_CONN_LE_CREATE_PARAM_INIT(_options, _interval, _window)
	Initialize create connection parameters. More...
#define	BT_CONN_LE_CREATE_PARAM(_options, _interval, _window)
#define	BT_CONN_LE_CREATE_CONN
#define	BT_CONN_LE_CREATE_CONN_AUTO
#define	BT_CONN_CB_DEFINE(_name)
	Register a callback structure for connection events. More...
#define	BT_PASSKEY_INVALID   0xffffffff
#define	BT_BR_CONN_PARAM_INIT(role_switch)
	Initialize BR/EDR connection parameters. More...
#define	BT_BR_CONN_PARAM(role_switch)
#define	BT_BR_CONN_PARAM_DEFAULT   BT_BR_CONN_PARAM(true)

Enumerations
enum	{ BT_CONN_LE_PHY_OPT_NONE = 0 , BT_CONN_LE_PHY_OPT_CODED_S2 = BIT(0) , BT_CONN_LE_PHY_OPT_CODED_S8 = BIT(1) }
enum	{   BT_CONN_TYPE_LE = BIT(0) , BT_CONN_TYPE_BR = BIT(1) , BT_CONN_TYPE_SCO = BIT(2) , BT_CONN_TYPE_ISO = BIT(3) ,   BT_CONN_TYPE_ALL }
enum	{ BT_CONN_ROLE_CENTRAL = 0 , BT_CONN_ROLE_PERIPHERAL = 1 }
enum	bt_conn_state { BT_CONN_STATE_DISCONNECTED , BT_CONN_STATE_CONNECTING , BT_CONN_STATE_CONNECTED , BT_CONN_STATE_DISCONNECTING }
enum	bt_security_t {   BT_SECURITY_L0 , BT_SECURITY_L1 , BT_SECURITY_L2 , BT_SECURITY_L3 ,   BT_SECURITY_L4 , BT_SECURITY_FORCE_PAIR = BIT(7) }
enum	bt_security_flag { BT_SECURITY_FLAG_SC = BIT(0) , BT_SECURITY_FLAG_OOB = BIT(1) }
enum	bt_conn_le_tx_power_phy {   BT_CONN_LE_TX_POWER_PHY_NONE , BT_CONN_LE_TX_POWER_PHY_1M , BT_CONN_LE_TX_POWER_PHY_2M , BT_CONN_LE_TX_POWER_PHY_CODED_S8 ,   BT_CONN_LE_TX_POWER_PHY_CODED_S2 }
enum	bt_conn_auth_keypress {   BT_CONN_AUTH_KEYPRESS_ENTRY_STARTED = 0x00 , BT_CONN_AUTH_KEYPRESS_DIGIT_ENTERED = 0x01 , BT_CONN_AUTH_KEYPRESS_DIGIT_ERASED = 0x02 , BT_CONN_AUTH_KEYPRESS_CLEARED = 0x03 ,   BT_CONN_AUTH_KEYPRESS_ENTRY_COMPLETED = 0x04 }
	Passkey Keypress Notification type. More...
enum	{ BT_CONN_LE_OPT_NONE = 0 , BT_CONN_LE_OPT_CODED = BIT(0) , BT_CONN_LE_OPT_NO_1M = BIT(1) }
enum	bt_security_err {   BT_SECURITY_ERR_SUCCESS , BT_SECURITY_ERR_AUTH_FAIL , BT_SECURITY_ERR_PIN_OR_KEY_MISSING , BT_SECURITY_ERR_OOB_NOT_AVAILABLE ,   BT_SECURITY_ERR_AUTH_REQUIREMENT , BT_SECURITY_ERR_PAIR_NOT_SUPPORTED , BT_SECURITY_ERR_PAIR_NOT_ALLOWED , BT_SECURITY_ERR_INVALID_PARAM ,   BT_SECURITY_ERR_KEY_REJECTED , BT_SECURITY_ERR_UNSPECIFIED }

Functions
struct bt_conn *	bt_conn_ref (struct bt_conn *conn)
	Increment a connection's reference count. More...
void	bt_conn_unref (struct bt_conn *conn)
	Decrement a connection's reference count. More...
void	bt_conn_foreach (int type, void(*func)(struct bt_conn *conn, void *data), void *data)
	Iterate through all bt_conn objects. More...
struct bt_conn *	bt_conn_lookup_addr_le (uint8_t id, const bt_addr_le_t *peer)
	Look up an existing connection by address. More...
const bt_addr_le_t *	bt_conn_get_dst (const struct bt_conn *conn)
	Get destination (peer) address of a connection. More...
uint8_t	bt_conn_index (const struct bt_conn *conn)
	Get array index of a connection. More...
int	bt_conn_get_info (const struct bt_conn *conn, struct bt_conn_info *info)
	Get connection info. More...
int	bt_conn_get_remote_info (struct bt_conn *conn, struct bt_conn_remote_info *remote_info)
	Get connection info for the remote device. More...
int	bt_conn_le_get_tx_power_level (struct bt_conn *conn, struct bt_conn_le_tx_power *tx_power_level)
	Get connection transmit power level. More...
int	bt_conn_le_param_update (struct bt_conn *conn, const struct bt_le_conn_param *param)
	Update the connection parameters. More...
int	bt_conn_le_data_len_update (struct bt_conn *conn, const struct bt_conn_le_data_len_param *param)
	Update the connection transmit data length parameters. More...
int	bt_conn_le_phy_update (struct bt_conn *conn, const struct bt_conn_le_phy_param *param)
	Update the connection PHY parameters. More...
int	bt_conn_disconnect (struct bt_conn *conn, uint8_t reason)
	Disconnect from a remote device or cancel pending connection. More...
int	bt_conn_le_create (const bt_addr_le_t *peer, const struct bt_conn_le_create_param *create_param, const struct bt_le_conn_param *conn_param, struct bt_conn **conn)
	Initiate an LE connection to a remote device. More...
int	bt_conn_le_create_synced (const struct bt_le_ext_adv *adv, const struct bt_conn_le_create_synced_param *synced_param, const struct bt_le_conn_param *conn_param, struct bt_conn **conn)
	Create a connection to a synced device. More...
int	bt_conn_le_create_auto (const struct bt_conn_le_create_param *create_param, const struct bt_le_conn_param *conn_param)
	Automatically connect to remote devices in the filter accept list.. More...
int	bt_conn_create_auto_stop (void)
	Stop automatic connect creation. More...
int	bt_le_set_auto_conn (const bt_addr_le_t *addr, const struct bt_le_conn_param *param)
	Automatically connect to remote device if it's in range. More...
int	bt_conn_set_security (struct bt_conn *conn, bt_security_t sec)
	Set security level for a connection. More...
bt_security_t	bt_conn_get_security (const struct bt_conn *conn)
	Get security level for a connection. More...
uint8_t	bt_conn_enc_key_size (const struct bt_conn *conn)
	Get encryption key size. More...
void	bt_conn_cb_register (struct bt_conn_cb *cb)
	Register connection callbacks. More...
void	bt_set_bondable (bool enable)
	Enable/disable bonding. More...
void	bt_le_oob_set_sc_flag (bool enable)
	Allow/disallow remote LE SC OOB data to be used for pairing. More...
void	bt_le_oob_set_legacy_flag (bool enable)
	Allow/disallow remote legacy OOB data to be used for pairing. More...
int	bt_le_oob_set_legacy_tk (struct bt_conn *conn, const uint8_t *tk)
	Set OOB Temporary Key to be used for pairing. More...
int	bt_le_oob_set_sc_data (struct bt_conn *conn, const struct bt_le_oob_sc_data *oobd_local, const struct bt_le_oob_sc_data *oobd_remote)
	Set OOB data during LE Secure Connections (SC) pairing procedure. More...
int	bt_le_oob_get_sc_data (struct bt_conn *conn, const struct bt_le_oob_sc_data **oobd_local, const struct bt_le_oob_sc_data **oobd_remote)
	Get OOB data used for LE Secure Connections (SC) pairing procedure. More...
int	bt_passkey_set (unsigned int passkey)
	Set a fixed passkey to be used for pairing. More...
int	bt_conn_auth_cb_register (const struct bt_conn_auth_cb *cb)
	Register authentication callbacks. More...
int	bt_conn_auth_cb_overlay (struct bt_conn *conn, const struct bt_conn_auth_cb *cb)
	Overlay authentication callbacks used for a given connection. More...
int	bt_conn_auth_info_cb_register (struct bt_conn_auth_info_cb *cb)
	Register authentication information callbacks. More...
int	bt_conn_auth_info_cb_unregister (struct bt_conn_auth_info_cb *cb)
	Unregister authentication information callbacks. More...
int	bt_conn_auth_passkey_entry (struct bt_conn *conn, unsigned int passkey)
	Reply with entered passkey. More...
int	bt_conn_auth_keypress_notify (struct bt_conn *conn, enum bt_conn_auth_keypress type)
	Send Passkey Keypress Notification during pairing. More...
int	bt_conn_auth_cancel (struct bt_conn *conn)
	Cancel ongoing authenticated pairing. More...
int	bt_conn_auth_passkey_confirm (struct bt_conn *conn)
	Reply if passkey was confirmed to match by user. More...
int	bt_conn_auth_pairing_confirm (struct bt_conn *conn)
	Reply if incoming pairing was confirmed by user. More...
int	bt_conn_auth_pincode_entry (struct bt_conn *conn, const char *pin)
	Reply with entered PIN code. More...
struct bt_conn *	bt_conn_create_br (const bt_addr_t *peer, const struct bt_br_conn_param *param)
	Initiate an BR/EDR connection to a remote device. More...
struct bt_conn *	bt_conn_create_sco (const bt_addr_t *peer)
	Initiate an SCO connection to a remote device. More...

Detailed Description

Bluetooth connection handling.