/* * Copyright (C) 2013 The Android Open Source Project * * 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 ANDROID_INCLUDE_BT_GATT_CLIENT_H #define ANDROID_INCLUDE_BT_GATT_CLIENT_H #include #include "bt_gatt_types.h" __BEGIN_DECLS /** * Buffer sizes for maximum attribute length and maximum read/write * operation buffer size. */ #define BTGATT_MAX_ATTR_LEN 600 /** Buffer type for unformatted reads/writes */ typedef struct { uint8_t value[BTGATT_MAX_ATTR_LEN]; uint16_t len; } btgatt_unformatted_value_t; /** Parameters for GATT read operations */ typedef struct { btgatt_srvc_id_t srvc_id; btgatt_gatt_id_t char_id; btgatt_gatt_id_t descr_id; btgatt_unformatted_value_t value; uint16_t value_type; uint8_t status; } btgatt_read_params_t; /** Parameters for GATT write operations */ typedef struct { btgatt_srvc_id_t srvc_id; btgatt_gatt_id_t char_id; btgatt_gatt_id_t descr_id; uint8_t status; } btgatt_write_params_t; /** Attribute change notification parameters */ typedef struct { uint8_t value[BTGATT_MAX_ATTR_LEN]; bt_bdaddr_t bda; btgatt_srvc_id_t srvc_id; btgatt_gatt_id_t char_id; uint16_t len; uint8_t is_notify; } btgatt_notify_params_t; typedef struct { bt_bdaddr_t *bda1; bt_uuid_t *uuid1; uint16_t u1; uint16_t u2; uint16_t u3; uint16_t u4; uint16_t u5; } btgatt_test_params_t; /** BT-GATT Client callback structure. */ /** Callback invoked in response to register_client */ typedef void (*register_client_callback)(int status, int client_if, bt_uuid_t *app_uuid); /** Callback for scan results */ typedef void (*scan_result_callback)(bt_bdaddr_t* bda, int rssi, uint8_t* adv_data); /** GATT open callback invoked in response to open */ typedef void (*connect_callback)(int conn_id, int status, int client_if, bt_bdaddr_t* bda); /** Callback invoked in response to close */ typedef void (*disconnect_callback)(int conn_id, int status, int client_if, bt_bdaddr_t* bda); /** * Invoked in response to search_service when the GATT service search * has been completed. */ typedef void (*search_complete_callback)(int conn_id, int status); /** Reports GATT services on a remote device */ typedef void (*search_result_callback)( int conn_id, btgatt_srvc_id_t *srvc_id); /** GATT characteristic enumeration result callback */ typedef void (*get_characteristic_callback)(int conn_id, int status, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, int char_prop); /** GATT descriptor enumeration result callback */ typedef void (*get_descriptor_callback)(int conn_id, int status, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, btgatt_gatt_id_t *descr_id); /** GATT included service enumeration result callback */ typedef void (*get_included_service_callback)(int conn_id, int status, btgatt_srvc_id_t *srvc_id, btgatt_srvc_id_t *incl_srvc_id); /** Callback invoked in response to [de]register_for_notification */ typedef void (*register_for_notification_callback)(int conn_id, int registered, int status, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id); /** * Remote device notification callback, invoked when a remote device sends * a notification or indication that a client has registered for. */ typedef void (*notify_callback)(int conn_id, btgatt_notify_params_t *p_data); /** Reports result of a GATT read operation */ typedef void (*read_characteristic_callback)(int conn_id, int status, btgatt_read_params_t *p_data); /** GATT write characteristic operation callback */ typedef void (*write_characteristic_callback)(int conn_id, int status, btgatt_write_params_t *p_data); /** GATT execute prepared write callback */ typedef void (*execute_write_callback)(int conn_id, int status); /** Callback invoked in response to read_descriptor */ typedef void (*read_descriptor_callback)(int conn_id, int status, btgatt_read_params_t *p_data); /** Callback invoked in response to write_descriptor */ typedef void (*write_descriptor_callback)(int conn_id, int status, btgatt_write_params_t *p_data); /** Callback triggered in response to read_remote_rssi */ typedef void (*read_remote_rssi_callback)(int client_if, bt_bdaddr_t* bda, int rssi, int status); /** * Callback indicationg the status of a listen() operation */ typedef void (*listen_callback)(int status, int server_if); typedef struct { register_client_callback register_client_cb; scan_result_callback scan_result_cb; connect_callback open_cb; disconnect_callback close_cb; search_complete_callback search_complete_cb; search_result_callback search_result_cb; get_characteristic_callback get_characteristic_cb; get_descriptor_callback get_descriptor_cb; get_included_service_callback get_included_service_cb; register_for_notification_callback register_for_notification_cb; notify_callback notify_cb; read_characteristic_callback read_characteristic_cb; write_characteristic_callback write_characteristic_cb; read_descriptor_callback read_descriptor_cb; write_descriptor_callback write_descriptor_cb; execute_write_callback execute_write_cb; read_remote_rssi_callback read_remote_rssi_cb; listen_callback listen_cb; } btgatt_client_callbacks_t; /** Represents the standard BT-GATT client interface. */ typedef struct { /** Registers a GATT client application with the stack */ bt_status_t (*register_client)( bt_uuid_t *uuid ); /** Unregister a client application from the stack */ bt_status_t (*unregister_client)(int client_if ); /** Start or stop LE device scanning */ bt_status_t (*scan)( int client_if, bool start ); /** Create a connection to a remote LE or dual-mode device */ bt_status_t (*connect)( int client_if, const bt_bdaddr_t *bd_addr, bool is_direct ); /** Disconnect a remote device or cancel a pending connection */ bt_status_t (*disconnect)( int client_if, const bt_bdaddr_t *bd_addr, int conn_id); /** Start or stop advertisements to listen for incoming connections */ bt_status_t (*listen)(int client_if, bool start); /** Clear the attribute cache for a given device */ bt_status_t (*refresh)( int client_if, const bt_bdaddr_t *bd_addr ); /** * Enumerate all GATT services on a connected device. * Optionally, the results can be filtered for a given UUID. */ bt_status_t (*search_service)(int conn_id, bt_uuid_t *filter_uuid ); /** * Enumerate included services for a given service. * Set start_incl_srvc_id to NULL to get the first included service. */ bt_status_t (*get_included_service)( int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_srvc_id_t *start_incl_srvc_id); /** * Enumerate characteristics for a given service. * Set start_char_id to NULL to get the first characteristic. */ bt_status_t (*get_characteristic)( int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *start_char_id); /** * Enumerate descriptors for a given characteristic. * Set start_descr_id to NULL to get the first descriptor. */ bt_status_t (*get_descriptor)( int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, btgatt_gatt_id_t *start_descr_id); /** Read a characteristic on a remote device */ bt_status_t (*read_characteristic)( int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, int auth_req ); /** Write a remote characteristic */ bt_status_t (*write_characteristic)(int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, int write_type, int len, int auth_req, char* p_value); /** Read the descriptor for a given characteristic */ bt_status_t (*read_descriptor)(int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, btgatt_gatt_id_t *descr_id, int auth_req); /** Write a remote descriptor for a given characteristic */ bt_status_t (*write_descriptor)( int conn_id, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id, btgatt_gatt_id_t *descr_id, int write_type, int len, int auth_req, char* p_value); /** Execute a prepared write operation */ bt_status_t (*execute_write)(int conn_id, int execute); /** * Register to receive notifications or indications for a given * characteristic */ bt_status_t (*register_for_notification)( int client_if, const bt_bdaddr_t *bd_addr, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id); /** Deregister a previous request for notifications/indications */ bt_status_t (*deregister_for_notification)( int client_if, const bt_bdaddr_t *bd_addr, btgatt_srvc_id_t *srvc_id, btgatt_gatt_id_t *char_id); /** Request RSSI for a given remote device */ bt_status_t (*read_remote_rssi)( int client_if, const bt_bdaddr_t *bd_addr); /** Determine the type of the remote device (LE, BR/EDR, Dual-mode) */ int (*get_device_type)( const bt_bdaddr_t *bd_addr ); /** Set the advertising data or scan response data */ bt_status_t (*set_adv_data)(int server_if, bool set_scan_rsp, bool include_name, bool include_txpower, int min_interval, int max_interval, int appearance, uint16_t manufacturer_len, char* manufacturer_data); /** Test mode interface */ bt_status_t (*test_command)( int command, btgatt_test_params_t* params); } btgatt_client_interface_t; __END_DECLS #endif /* ANDROID_INCLUDE_BT_GATT_CLIENT_H */