556 lines
22 KiB
C
556 lines
22 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __ESP_GATTS_API_H__
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#define __ESP_GATTS_API_H__
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#include "esp_bt_defs.h"
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#include "esp_gatt_defs.h"
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#include "esp_err.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/// GATT Server callback function events
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typedef enum {
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ESP_GATTS_REG_EVT = 0, /*!< When register application id, the event comes */
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ESP_GATTS_READ_EVT = 1, /*!< When gatt client request read operation, the event comes */
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ESP_GATTS_WRITE_EVT = 2, /*!< When gatt client request write operation, the event comes */
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ESP_GATTS_EXEC_WRITE_EVT = 3, /*!< When gatt client request execute write, the event comes */
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ESP_GATTS_MTU_EVT = 4, /*!< When set mtu complete, the event comes */
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ESP_GATTS_CONF_EVT = 5, /*!< When receive confirm, the event comes */
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ESP_GATTS_UNREG_EVT = 6, /*!< When unregister application id, the event comes */
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ESP_GATTS_CREATE_EVT = 7, /*!< When create service complete, the event comes */
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ESP_GATTS_ADD_INCL_SRVC_EVT = 8, /*!< When add included service complete, the event comes */
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ESP_GATTS_ADD_CHAR_EVT = 9, /*!< When add characteristic complete, the event comes */
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ESP_GATTS_ADD_CHAR_DESCR_EVT = 10, /*!< When add descriptor complete, the event comes */
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ESP_GATTS_DELETE_EVT = 11, /*!< When delete service complete, the event comes */
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ESP_GATTS_START_EVT = 12, /*!< When start service complete, the event comes */
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ESP_GATTS_STOP_EVT = 13, /*!< When stop service complete, the event comes */
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ESP_GATTS_CONNECT_EVT = 14, /*!< When gatt client connect, the event comes */
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ESP_GATTS_DISCONNECT_EVT = 15, /*!< When gatt client disconnect, the event comes */
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ESP_GATTS_OPEN_EVT = 16, /*!< When connect to peer, the event comes */
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ESP_GATTS_CANCEL_OPEN_EVT = 17, /*!< When disconnect from peer, the event comes */
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ESP_GATTS_CLOSE_EVT = 18, /*!< When gatt server close, the event comes */
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ESP_GATTS_LISTEN_EVT = 19, /*!< When gatt listen to be connected the event comes */
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ESP_GATTS_CONGEST_EVT = 20, /*!< When congest happen, the event comes */
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/* following is extra event */
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ESP_GATTS_RESPONSE_EVT = 21, /*!< When gatt send response complete, the event comes */
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ESP_GATTS_CREAT_ATTR_TAB_EVT = 22,
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ESP_GATTS_SET_ATTR_VAL_EVT = 23,
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} esp_gatts_cb_event_t;
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/**
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* @brief Gatt server callback parameters union
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*/
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typedef union {
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/**
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* @brief ESP_GATTS_REG_EVT
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*/
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struct gatts_reg_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t app_id; /*!< Application id which input in register API */
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} reg; /*!< Gatt server callback param of ESP_GATTS_REG_EVT */
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/**
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* @brief ESP_GATTS_READ_EVT
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*/
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struct gatts_read_evt_param {
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uint16_t conn_id; /*!< Connection id */
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uint32_t trans_id; /*!< Transfer id */
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esp_bd_addr_t bda; /*!< The bluetooth device address which been read */
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uint16_t handle; /*!< The attribute handle */
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uint16_t offset; /*!< Offset of the value, if the value is too long */
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bool is_long; /*!< The value is too long or not */
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bool need_rsp; /*!< The read operation need to do response */
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} read; /*!< Gatt server callback param of ESP_GATTS_READ_EVT */
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/**
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* @brief ESP_GATTS_WRITE_EVT
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*/
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struct gatts_write_evt_param {
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uint16_t conn_id; /*!< Connection id */
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uint32_t trans_id; /*!< Transfer id */
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esp_bd_addr_t bda; /*!< The bluetooth device address which been written */
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uint16_t handle; /*!< The attribute handle */
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uint16_t offset; /*!< Offset of the value, if the value is too long */
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bool need_rsp; /*!< The write operation need to do response */
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bool is_prep; /*!< This write operation is prepare write */
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uint16_t len; /*!< The write attribute value length */
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uint8_t *value; /*!< The write attribute value */
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} write; /*!< Gatt server callback param of ESP_GATTS_WRITE_EVT */
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/**
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* @brief ESP_GATTS_EXEC_WRITE_EVT
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*/
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struct gatts_exec_write_evt_param {
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uint16_t conn_id; /*!< Connection id */
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uint32_t trans_id; /*!< Transfer id */
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esp_bd_addr_t bda; /*!< The bluetooth device address which been written */
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#define ESP_GATT_PREP_WRITE_CANCEL 0x00 /*!< Prepare write flag to indicate cancel prepare write */
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#define ESP_GATT_PREP_WRITE_EXEC 0x01 /*!< Prepare write flag to indicate execute prepare write */
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uint8_t exec_write_flag; /*!< Execute write flag */
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} exec_write; /*!< Gatt server callback param of ESP_GATTS_EXEC_WRITE_EVT */
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/**
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* @brief ESP_GATTS_MTU_EVT
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*/
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struct gatts_mtu_evt_param {
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uint16_t conn_id; /*!< Connection id */
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uint16_t mtu; /*!< MTU size */
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} mtu; /*!< Gatt server callback param of ESP_GATTS_MTU_EVT */
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/**
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* @brief ESP_GATTS_CONF_EVT
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*/
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struct gatts_conf_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t conn_id; /*!< Connection id */
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uint16_t len; /*!< The indication or notification value length, len is valid when send notification or indication failed */
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uint8_t *value; /*!< The indication or notification value , value is valid when send notification or indication failed */
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} conf; /*!< Gatt server callback param of ESP_GATTS_CONF_EVT (confirm) */
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/**
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* @brief ESP_GATTS_UNREG_EVT
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*/
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/**
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* @brief ESP_GATTS_CREATE_EVT
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*/
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struct gatts_create_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t service_handle; /*!< Service attribute handle */
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esp_gatt_srvc_id_t service_id; /*!< Service id, include service uuid and other information */
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} create; /*!< Gatt server callback param of ESP_GATTS_CREATE_EVT */
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/**
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* @brief ESP_GATTS_ADD_INCL_SRVC_EVT
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*/
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struct gatts_add_incl_srvc_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t attr_handle; /*!< Included service attribute handle */
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uint16_t service_handle; /*!< Service attribute handle */
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} add_incl_srvc; /*!< Gatt server callback param of ESP_GATTS_ADD_INCL_SRVC_EVT */
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/**
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* @brief ESP_GATTS_ADD_CHAR_EVT
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*/
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struct gatts_add_char_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t attr_handle; /*!< Characteristic attribute handle */
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uint16_t service_handle; /*!< Service attribute handle */
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esp_bt_uuid_t char_uuid; /*!< Characteristic uuid */
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} add_char; /*!< Gatt server callback param of ESP_GATTS_ADD_CHAR_EVT */
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/**
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* @brief ESP_GATTS_ADD_CHAR_DESCR_EVT
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*/
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struct gatts_add_char_descr_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t attr_handle; /*!< Descriptor attribute handle */
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uint16_t service_handle; /*!< Service attribute handle */
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esp_bt_uuid_t descr_uuid; /*!< Characteristic descriptor uuid */
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} add_char_descr; /*!< Gatt server callback param of ESP_GATTS_ADD_CHAR_DESCR_EVT */
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/**
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* @brief ESP_GATTS_DELETE_EVT
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*/
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struct gatts_delete_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t service_handle; /*!< Service attribute handle */
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} del; /*!< Gatt server callback param of ESP_GATTS_DELETE_EVT */
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/**
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* @brief ESP_GATTS_START_EVT
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*/
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struct gatts_start_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t service_handle; /*!< Service attribute handle */
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} start; /*!< Gatt server callback param of ESP_GATTS_START_EVT */
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/**
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* @brief ESP_GATTS_STOP_EVT
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*/
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struct gatts_stop_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t service_handle; /*!< Service attribute handle */
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} stop; /*!< Gatt server callback param of ESP_GATTS_STOP_EVT */
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/**
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* @brief ESP_GATTS_CONNECT_EVT
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*/
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struct gatts_connect_evt_param {
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uint16_t conn_id; /*!< Connection id */
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esp_bd_addr_t remote_bda; /*!< Remote bluetooth device address */
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} connect; /*!< Gatt server callback param of ESP_GATTS_CONNECT_EVT */
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/**
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* @brief ESP_GATTS_DISCONNECT_EVT
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*/
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struct gatts_disconnect_evt_param {
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uint16_t conn_id; /*!< Connection id */
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esp_bd_addr_t remote_bda; /*!< Remote bluetooth device address */
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esp_gatt_conn_reason_t reason; /*!< Indicate the reason of disconnection */
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} disconnect; /*!< Gatt server callback param of ESP_GATTS_DISCONNECT_EVT */
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/**
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* @brief ESP_GATTS_OPEN_EVT
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*/
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struct gatts_open_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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} open; /*!< Gatt server callback param of ESP_GATTS_OPEN_EVT */
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/**
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* @brief ESP_GATTS_CANCEL_OPEN_EVT
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*/
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struct gatts_cancel_open_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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} cancel_open; /*!< Gatt server callback param of ESP_GATTS_CANCEL_OPEN_EVT */
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/**
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* @brief ESP_GATTS_CLOSE_EVT
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*/
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struct gatts_close_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t conn_id; /*!< Connection id */
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} close; /*!< Gatt server callback param of ESP_GATTS_CLOSE_EVT */
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/**
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* @brief ESP_GATTS_LISTEN_EVT
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*/
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/**
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* @brief ESP_GATTS_CONGEST_EVT
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*/
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struct gatts_congest_evt_param {
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uint16_t conn_id; /*!< Connection id */
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bool congested; /*!< Congested or not */
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} congest; /*!< Gatt server callback param of ESP_GATTS_CONGEST_EVT */
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/**
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* @brief ESP_GATTS_RESPONSE_EVT
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*/
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struct gatts_rsp_evt_param {
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esp_gatt_status_t status; /*!< Operation status */
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uint16_t handle; /*!< Attribute handle which send response */
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} rsp; /*!< Gatt server callback param of ESP_GATTS_RESPONSE_EVT */
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/**
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* @brief ESP_GATTS_CREAT_ATTR_TAB_EVT
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*/
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struct gatts_add_attr_tab_evt_param{
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esp_gatt_status_t status; /*!< Operation status */
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esp_bt_uuid_t svc_uuid; /*!< Service uuid type */
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uint16_t num_handle; /*!< The number of the attribute handle to be added to the gatts database */
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uint16_t *handles; /*!< The number to the handles */
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} add_attr_tab; /*!< Gatt server callback param of ESP_GATTS_CREAT_ATTR_TAB_EVT */
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/**
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* @brief ESP_GATTS_SET_ATTR_VAL_EVT
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*/
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struct gatts_set_attr_val_evt_param{
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uint16_t srvc_handle; /*!< The service handle */
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uint16_t attr_handle; /*!< The attribute handle */
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esp_gatt_status_t status; /*!< Operation status*/
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} set_attr_val; /*!< Gatt server callback param of ESP_GATTS_SET_ATTR_VAL_EVT */
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} esp_ble_gatts_cb_param_t;
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/**
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* @brief GATT Server callback function type
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* @param event : Event type
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* @param gatts_if : GATT server access interface, normally
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* different gatts_if correspond to different profile
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* @param param : Point to callback parameter, currently is union type
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*/
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typedef void (* esp_gatts_cb_t)(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
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/**
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* @brief This function is called to register application callbacks
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* with BTA GATTS module.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_register_callback(esp_gatts_cb_t callback);
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/**
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* @brief This function is called to register application identifier
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_app_register(uint16_t app_id);
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/**
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* @brief unregister with GATT Server.
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*
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* @param[in] gatts_if: GATT server access interface
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_app_unregister(esp_gatt_if_t gatts_if);
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/**
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* @brief Create a service. When service creation is done, a callback
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* event BTA_GATTS_CREATE_SRVC_EVT is called to report status
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* and service ID to the profile. The service ID obtained in
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* the callback function needs to be used when adding included
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* service and characteristics/descriptors into the service.
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*
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* @param[in] gatts_if: GATT server access interface
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* @param[in] service_id: service ID.
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* @param[in] num_handle: number of handle requested for this service.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_create_service(esp_gatt_if_t gatts_if,
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esp_gatt_srvc_id_t *service_id, uint16_t num_handle);
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/**
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* @brief Create a service attribute tab.
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* @param[in] gatts_attr_db: the pointer to the service attr tab
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* @param[in] gatts_if: GATT server access interface
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* @param[in] max_nb_attr: the number of attribute to be added to the service database.
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* @param[in] srvc_inst_id: the instance id of the service
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_create_attr_tab(const esp_gatts_attr_db_t *gatts_attr_db,
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esp_gatt_if_t gatts_if,
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uint8_t max_nb_attr,
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uint8_t srvc_inst_id);
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/**
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* @brief This function is called to add an included service. After included
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* service is included, a callback event BTA_GATTS_ADD_INCL_SRVC_EVT
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* is reported the included service ID.
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*
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* @param[in] service_handle: service handle to which this included service is to
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* be added.
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* @param[in] included_service_handle: the service ID to be included.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_add_included_service(uint16_t service_handle, uint16_t included_service_handle);
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/**
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* @brief This function is called to add a characteristic into a service.
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*
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* @param[in] service_handle: service handle to which this included service is to
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* be added.
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* @param[in] char_uuid : Characteristic UUID.
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* @param[in] perm : Characteristic value declaration attribute permission.
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* @param[in] property : Characteristic Properties
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* @param[in] char_val : Characteristic value
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* @param[in] control : attribute response control byte
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_add_char(uint16_t service_handle, esp_bt_uuid_t *char_uuid,
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esp_gatt_perm_t perm, esp_gatt_char_prop_t property, esp_attr_value_t *char_val,
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esp_attr_control_t *control);
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/**
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* @brief This function is called to add characteristic descriptor. When
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* it's done, a callback event BTA_GATTS_ADD_DESCR_EVT is called
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* to report the status and an ID number for this descriptor.
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*
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* @param[in] service_handle: service handle to which this characteristic descriptor is to
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* be added.
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* @param[in] perm: descriptor access permission.
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* @param[in] descr_uuid: descriptor UUID.
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* @param[in] char_descr_val : Characteristic descriptor value
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* @param[in] control : attribute response control byte
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_add_char_descr (uint16_t service_handle,
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esp_bt_uuid_t *descr_uuid,
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esp_gatt_perm_t perm, esp_attr_value_t *char_descr_val,
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esp_attr_control_t *control);
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/**
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* @brief This function is called to delete a service. When this is done,
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* a callback event BTA_GATTS_DELETE_EVT is report with the status.
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*
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* @param[in] service_handle: service_handle to be deleted.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_delete_service(uint16_t service_handle);
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/**
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* @brief This function is called to start a service.
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*
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* @param[in] service_handle: the service handle to be started.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_start_service(uint16_t service_handle);
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/**
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* @brief This function is called to stop a service.
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*
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* @param[in] service_handle - service to be topped.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_stop_service(uint16_t service_handle);
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/**
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* @brief Send indicate or notify to GATT client.
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* Set param need_confirm as false will send notification, otherwise indication.
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*
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* @param[in] gatts_if: GATT server access interface
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* @param[in] conn_id - connection id to indicate.
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* @param[in] attr_handle - attribute handle to indicate.
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* @param[in] value_len - indicate value length.
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* @param[in] value: value to indicate.
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* @param[in] need_confirm - Whether a confirmation is required.
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* false sends a GATT notification, true sends a GATT indication.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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*
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*/
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esp_err_t esp_ble_gatts_send_indicate(esp_gatt_if_t gatts_if, uint16_t conn_id, uint16_t attr_handle,
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uint16_t value_len, uint8_t *value, bool need_confirm);
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/**
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* @brief This function is called to send a response to a request.
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*
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* @param[in] gatts_if: GATT server access interface
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* @param[in] conn_id - connection identifier.
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* @param[in] trans_id - transfer id
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* @param[in] status - response status
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* @param[in] rsp - response data.
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*
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* @return
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* - ESP_OK : success
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* - other : failed
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|
*
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|
*/
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esp_err_t esp_ble_gatts_send_response(esp_gatt_if_t gatts_if, uint16_t conn_id, uint32_t trans_id,
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esp_gatt_status_t status, esp_gatt_rsp_t *rsp);
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|
|
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/**
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* @brief This function is called to set the attribute value by the application
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|
*
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* @param[in] attr_handle: the attribute handle which to be set
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* @param[in] length: the value length
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* @param[in] value: the pointer to the attribute value
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|
*
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* @return
|
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* - ESP_OK : success
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|
* - other : failed
|
|
*
|
|
*/
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|
esp_err_t esp_ble_gatts_set_attr_value(uint16_t attr_handle, uint16_t length, const uint8_t *value);
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|
|
|
/**
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|
* @brief Retrieve attribute value
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|
*
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* @param[in] attr_handle: Attribute handle.
|
|
* @param[out] length: pointer to the attribute value length
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|
* @param[out] value: Pointer to attribute value payload, the value cannot be modified by user
|
|
*
|
|
* @return
|
|
* - ESP_GATT_OK : success
|
|
* - other : failed
|
|
*
|
|
*/
|
|
esp_gatt_status_t esp_ble_gatts_get_attr_value(uint16_t attr_handle, uint16_t *length, const uint8_t **value);
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|
|
|
|
|
/**
|
|
* @brief Open a direct open connection or add a background auto connection
|
|
*
|
|
* @param[in] gatts_if: GATT server access interface
|
|
* @param[in] remote_bda: remote device bluetooth device address.
|
|
* @param[in] is_direct: direct connection or background auto connection
|
|
*
|
|
* @return
|
|
* - ESP_OK : success
|
|
* - other : failed
|
|
*
|
|
*/
|
|
esp_err_t esp_ble_gatts_open(esp_gatt_if_t gatts_if, esp_bd_addr_t remote_bda, bool is_direct);
|
|
|
|
/**
|
|
* @brief Close a connection a remote device.
|
|
*
|
|
* @param[in] gatts_if: GATT server access interface
|
|
* @param[in] conn_id: connection ID to be closed.
|
|
*
|
|
* @return
|
|
* - ESP_OK : success
|
|
* - other : failed
|
|
*
|
|
*/
|
|
esp_err_t esp_ble_gatts_close(esp_gatt_if_t gatts_if, uint16_t conn_id);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ESP_GATTS_API_H__ */
|