esp-idf/components/bt/bluedroid/api/include/esp_gap_ble_api.h

#ifndef __ESP_GAP_BLE_API_H__
#define __ESP_GAP_BLE_API_H__

#include <stdint.h>
#include <stdbool.h>

#include "esp_err.h"
#include "esp_bt_defs.h"

#define ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT		0
#define ESP_GAP_BLE_SCAN_RSP_DATA_SET_COMPLETE_EVT	1
#define ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT		2
#define ESP_GAP_BLE_SCAN_RESULT_EVT					3

typedef uint32_t esp_gap_ble_event_t;

/// Advertising mode
typedef enum {
	ADV_TYPE_IND 				= 0x00,
	ADV_TYPE_DIRECT_IND_HIGH	= 0x01,
	ADV_TYPE_SCAN_IND			= 0x02,
	ADV_TYPE_NONCONN_IND		= 0x03,
	ADV_TYPE_DIRECT_IND_LOW		= 0x04,
} esp_ble_adv_type_t;

typedef enum {
	ADV_CHNL_37		= 0x01,
	ADV_CHNL_38		= 0x02,	
	ADV_CHNL_39		= 0x03,
	ADV_CHNL_ALL	= 0x07,
} esp_ble_adv_channel_t;

typedef enum {
     ///Allow both scan and connection requests from anyone
    ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY  = 0x00,
    ///Allow both scan req from White List devices only and connection req from anyone
    ADV_FILTER_ALLOW_SCAN_WLST_CON_ANY,
    ///Allow both scan req from anyone and connection req from White List devices only
    ADV_FILTER_ALLOW_SCAN_ANY_CON_WLST,
    ///Allow scan and connection requests from White List devices only
    ADV_FILTER_ALLOW_SCAN_WLST_CON_WLST,
    ///Enumeration end value for advertising filter policy value check
} esp_ble_adv_filter_t;


typedef struct {
	uint16_t			  	adv_int_min;
	uint16_t				adv_int_max;
	esp_ble_adv_type_t		adv_type;
	esp_ble_addr_type_t		own_addr_type;
	esp_bd_addr_t			peer_addr;
	esp_ble_addr_type_t		peer_addr_type;
	esp_ble_adv_channel_t	channel_map;
	esp_ble_adv_filter_t	adv_filter_policy;
} esp_ble_adv_params_t;

typedef struct {
	bool					set_scan_rsp;
	bool					include_name;
	bool					include_txpower;
	int						min_interval;
	int						max_interval;
	int						appearance;
	uint16_t				manufacturer_len;
	uint8_t					*p_manufacturer_data;
	uint16_t				service_data_len;
	uint8_t					*p_service_data;
	uint16_t				service_uuid_len;
	uint8_t					*p_service_uuid;
	uint8_t	                flag;
} esp_ble_adv_data_t;

typedef enum {
	BLE_SCAN_TYPE_PASSIVE 	=	0x0,
	BLE_SCAN_TYPE_ACTIVE 	=	0x1,
} esp_ble_scan_type_t;

typedef enum {
	BLE_SCAN_FILTER_ALLOW_ALL 			= 0x0,
	BLE_SCAN_FILTER_ALLOW_ONLY_WLST		= 0x1,
	BLE_SCAN_FILTER_ALLOW_UND_RPA_DIR		= 0x2,
	BLE_SCAN_FILTER_ALLOW_WLIST_PRA_DIR	= 0x3,
} esp_ble_scan_filter_t;

typedef struct
{
	esp_ble_scan_type_t		scan_type;
	esp_ble_addr_type_t		own_addr_type;
	esp_ble_scan_filter_t	scan_filter_policy;
	uint16_t				scan_interval;
	uint16_t				scan_window;
} esp_ble_scan_params_t;

typedef struct {
	esp_bd_addr_t bda;
	uint16_t min_int;
	uint16_t max_int;
	uint16_t latency;
	uint16_t timeout;
} esp_ble_conn_update_params_t;

typedef void (*esp_gap_ble_cb_t)(esp_gap_ble_event_t event, void *param);

typedef enum {
	/* Search callback events */
	ESP_GAP_SEARCH_INQ_RES_EVT             = 0,      /* Inquiry result for a peer device. */
	ESP_GAP_SEARCH_INQ_CMPL_EVT            = 1,      /* Inquiry complete. */
	ESP_GAP_SEARCH_DISC_RES_EVT            = 2,      /* Discovery result for a peer device. */
	ESP_GAP_SEARCH_DISC_BLE_RES_EVT        = 3,      /* Discovery result for BLE GATT based servoce on a peer device. */
	ESP_GAP_SEARCH_DISC_CMPL_EVT           = 4,      /* Discovery complete. */
	ESP_GAP_SEARCH_DI_DISC_CMPL_EVT        = 5,      /* Discovery complete. */
	ESP_GAP_SEARCH_SEARCH_CANCEL_CMPL_EVT  = 6,      /* Search cancelled */
} esp_gap_search_evt_t;

typedef union {
	//ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT		0
	struct ble_adv_data_cmpl_evt_param {
		esp_bt_status_t status;
	} adv_data_cmpl;
	//ESP_GAP_BLE_SCAN_RSP_DATA_SET_COMPLETE_EVT	1
	struct ble_scan_rsp_data_cmpl_evt_param {
		esp_bt_status_t status;
	} scan_rsp_data_cmpl;
	//ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT		2
	struct ble_scan_param_cmpl_evt_param {
		esp_bt_status_t status;
	} scan_param_cmpl;
	//ESP_GAP_BLE_SCAN_RESULT_EVT					3
	struct ble_scan_result_evt_param {
		esp_gap_search_evt_t search_evt;
		esp_bd_addr_t bda;
		esp_bt_dev_type_t dev_type;
		esp_ble_addr_type_t ble_addr_type;
		int	rssi;
		int flag;
		int num_resps;
	} scan_rst;
} esp_ble_gap_cb_param_t;

/*******************************************************************************
**
** @function        esp_ble_gap_register_callback
**
** @brief           This function is called to occur gap event, such as scan result
**
** @param[in]       callback: callback function
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/

esp_err_t esp_ble_gap_register_callback(esp_profile_cb_t callback);

	
/*******************************************************************************
**
** @function        esp_ble_gap_config_adv_data
**
** @brief           This function is called to override the BTA default ADV parameters.
**
** @param[in]       adv_data: Pointer to User defined ADV data structure. This
**                  memory space can not be freed until p_adv_data_cback
**                  is received.
** @param[in|out]   adv_data_cback: set adv data complete callback.
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_config_adv_data (esp_ble_adv_data_t *adv_data);



/*******************************************************************************
**
** @function        esp_ble_gap_set_scan_params
**
** @brief           This function is called to set scan parameters
**
** @param[in]       esp_ble_scan_params: Pointer to User defined scan_params data structure. This
**                  memory space can not be freed until scan_param_setup_cback
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_set_scan_params(esp_ble_scan_params_t *scan_params);


/*******************************************************************************
**
** @function        esp_ble_gap_start_scanning
**
** @brief           This procedure keep the device scanning the peer device whith advertising on the air 
**
** @param[in]       duration: Keeping the scaning time, the unit is second.
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_start_scanning(uint32_t duration);



/*******************************************************************************
**
** @function        esp_ble_gap_start_advertising
**
** @brief           This function is called to start advertising.
**
** @param[in]       esp_ble_adv_params_all_t: ointer to User defined adv_params data structure.
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_start_advertising (esp_ble_adv_params_t *adv_params);



/*******************************************************************************
**
** @function        esp_gap_ble_stop_advertising
**
** @brief           This function is called to stop advertising.
**
** @param       	None
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_stop_advertising(void);



/*******************************************************************************
**
** @function         esp_ble_update_conn_params
**
** @brief           Update connection parameters, can only be used when connection is up.
**
** @param[in]       param   -  connection update params
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_update_conn_params(esp_ble_conn_update_params_t *params);


/*******************************************************************************
**
** @function        esp_ble_gap_set_pkt_data_len
**
** @brief           This function is to set maximum LE data packet size
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_set_pkt_data_len(esp_bd_addr_t remote_device, uint16_t tx_data_length);



/*******************************************************************************
**
** @function        esp_ble_gap_set_rand_addr
**
** @brief           This function set the random address for the appliction
**
** @param[in]       rand_addr: the random address whith should be setting
** 
** @return          ESP_OK - success, other - failed
**
**
*******************************************************************************/
esp_err_t esp_ble_gap_set_rand_addr(esp_bd_addr_t rand_addr);



/*******************************************************************************
**
** @function        esp_ble_gap_config_local_privacy
**
** @brief           Enable/disable privacy on the local device
**
** @param[in]       privacy_enable   - enable/disabe privacy on remote device.
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_config_local_privacy (bool privacy_enable);	


/*******************************************************************************
**
** @function        esp_ble_gap_set_device_name
**
** @brief           Set device name to the local device
**
** @param[in]       name   -  device name.
**
** @return          ESP_OK - success, other - failed
**
*******************************************************************************/
esp_err_t esp_ble_gap_set_device_name(char *name);

#endif /* __ESP_GAP_BLE_API_H__ */