Component/bt: add gatt_security_client demo
- connect gatt_security_server demo with paring and bonding - connet other ble devices that needs to be encrypted
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10
examples/bluetooth/gatt_security_client/Makefile
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examples/bluetooth/gatt_security_client/Makefile
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#
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# This is a project Makefile. It is assumed the directory this Makefile resides in is a
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# project subdirectory.
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#
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PROJECT_NAME := sec_gattc_demo
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COMPONENT_ADD_INCLUDEDIRS := components/include
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include $(IDF_PATH)/make/project.mk
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examples/bluetooth/gatt_security_client/README.rst
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examples/bluetooth/gatt_security_client/README.rst
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ESP-IDF GATT SECURITY CLIENT DEMO
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========================
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This is the demo for user to use ESP BLE security API to connection with peer device & communication.
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1.Should used the esp_ble_gap_set_security_param API to set the security parameter to the BLE stack in the init stage;
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2.Used the esp_ble_set_encryption API to start encryption with peer device, if the peer device take the initiative encryption, should used the esp_ble_gap_security_rsp API to sent response to peer device when receive the ESP_GAP_BLE_SEC_REQ_EVT.
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3.It will receive the ESP_GAP_BLE_AUTH_CMPL_EVT event when encryption finish will peer device.
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#
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# "main" pseudo-component makefile.
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#
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# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
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// Copyright 2015-2017 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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/****************************************************************************
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*
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* This file is for gatt_security_client demo. It can scan ble device, connect one device that needs to be encrypted.
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* run gatt_security_server demo, the gatt_security_client demo will automatically connect the gatt_security_server,
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* then paring and bonding.
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*
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****************************************************************************/
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include "nvs.h"
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#include "nvs_flash.h"
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#include "controller.h"
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#include "bt.h"
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#include "esp_gap_ble_api.h"
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#include "esp_gattc_api.h"
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#include "esp_gatt_defs.h"
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#include "esp_bt_main.h"
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#define GATTC_TAG "SEC_GATTC_DEMO"
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#define REMOTE_SERVICE_UUID 0x1809
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#define REMOTE_NOTIFY_UUID 0x2A37
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///Declare static functions
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static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param);
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static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
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static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
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static esp_gatt_srvc_id_t heart_rate_service_id = {
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.id = {
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.uuid = {
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.len = ESP_UUID_LEN_16,
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.uuid = {.uuid16 = REMOTE_SERVICE_UUID,},
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},
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.inst_id = 0,
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},
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.is_primary = true,
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};
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static esp_bt_uuid_t remote_filter_service_uuid = {
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.len = ESP_UUID_LEN_16,
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.uuid = {.uuid16 = REMOTE_SERVICE_UUID,},
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};
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static esp_gatt_id_t remote_notify_descr_id = {
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.uuid = {
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.len = ESP_UUID_LEN_16,
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.uuid = {.uuid16 = ESP_GATT_UUID_CHAR_CLIENT_CONFIG,},
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},
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.inst_id = 0,
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};
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static bool connect = false;
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static bool get_service = false;
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static const char remote_device_name[] = "ESP_BLE_SECURITY";
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static esp_ble_scan_params_t ble_scan_params = {
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.scan_type = BLE_SCAN_TYPE_ACTIVE,
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.own_addr_type = BLE_ADDR_TYPE_RANDOM,
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.scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL,
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.scan_interval = 0x50,
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.scan_window = 0x30
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};
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#define PROFILE_NUM 1
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#define PROFILE_A_APP_ID 0
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struct gattc_profile_inst {
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esp_gattc_cb_t gattc_cb;
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uint16_t gattc_if;
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uint16_t app_id;
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uint16_t conn_id;
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esp_bd_addr_t remote_bda;
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};
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/* One gatt-based profile one app_id and one gattc_if, this array will store the gattc_if returned by ESP_GATTS_REG_EVT */
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static struct gattc_profile_inst gl_profile_tab[PROFILE_NUM] = {
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[PROFILE_A_APP_ID] = {
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.gattc_cb = gattc_profile_event_handler,
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.gattc_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */
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},
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};
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static char *esp_key_type_to_str(esp_ble_key_type_t key_type)
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{
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char *key_str = NULL;
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switch(key_type) {
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case ESP_LE_KEY_NONE:
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key_str = "ESP_LE_KEY_NONE";
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break;
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case ESP_LE_KEY_PENC:
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key_str = "ESP_LE_KEY_PENC";
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break;
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case ESP_LE_KEY_PID:
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key_str = "ESP_LE_KEY_PID";
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break;
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case ESP_LE_KEY_PCSRK:
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key_str = "ESP_LE_KEY_PCSRK";
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break;
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case ESP_LE_KEY_PLK:
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key_str = "ESP_LE_KEY_PLK";
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break;
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case ESP_LE_KEY_LLK:
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key_str = "ESP_LE_KEY_LLK";
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break;
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case ESP_LE_KEY_LENC:
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key_str = "ESP_LE_KEY_LENC";
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break;
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case ESP_LE_KEY_LID:
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key_str = "ESP_LE_KEY_LID";
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break;
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case ESP_LE_KEY_LCSRK:
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key_str = "ESP_LE_KEY_LCSRK";
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break;
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default:
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key_str = "INVALID BLE KEY TYPE";
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break;
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}
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return key_str;
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}
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static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param)
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{
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uint16_t conn_id = 0;
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esp_ble_gattc_cb_param_t *p_data = (esp_ble_gattc_cb_param_t *)param;
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switch (event) {
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case ESP_GATTC_REG_EVT:
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ESP_LOGI(GATTC_TAG, "REG_EVT");
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esp_ble_gap_config_local_privacy(true);
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break;
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case ESP_GATTC_OPEN_EVT:
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if (param->open.status != ESP_GATT_OK){
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ESP_LOGE(GATTC_TAG, "open failed, error status = %x", p_data->open.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "open success");
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conn_id = p_data->open.conn_id;
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gl_profile_tab[PROFILE_A_APP_ID].conn_id = p_data->open.conn_id;
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memcpy(gl_profile_tab[PROFILE_A_APP_ID].remote_bda, p_data->open.remote_bda, sizeof(esp_bd_addr_t));
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ESP_LOGI(GATTC_TAG, "REMOTE BDA:");
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esp_log_buffer_hex(GATTC_TAG, gl_profile_tab[PROFILE_A_APP_ID].remote_bda, sizeof(esp_bd_addr_t));
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esp_err_t mtu_ret = esp_ble_gattc_config_mtu (gattc_if, conn_id, 200);
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if (mtu_ret){
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ESP_LOGE(GATTC_TAG, "config MTU error, error code = %x", mtu_ret);
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}
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break;
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case ESP_GATTC_CFG_MTU_EVT:
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if (param->cfg_mtu.status != ESP_GATT_OK){
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ESP_LOGE(GATTC_TAG,"config mtu failed, error status = %x", param->cfg_mtu.status);
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}
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ESP_LOGI(GATTC_TAG, "ESP_GATTC_CFG_MTU_EVT, Status %d, MTU %d, conn_id %d", param->cfg_mtu.status, param->cfg_mtu.mtu, param->cfg_mtu.conn_id);
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esp_ble_gattc_search_service(gattc_if, param->cfg_mtu.conn_id, &remote_filter_service_uuid);
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break;
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case ESP_GATTC_SEARCH_RES_EVT: {
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esp_gatt_srvc_id_t *srvc_id = &p_data->search_res.srvc_id;
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conn_id = p_data->search_res.conn_id;
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ESP_LOGI(GATTC_TAG, "SEARCH RES: conn_id = %x", conn_id);
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if (srvc_id->id.uuid.len == ESP_UUID_LEN_16 && srvc_id->id.uuid.uuid.uuid16 == REMOTE_SERVICE_UUID) {
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ESP_LOGI(GATTC_TAG, "UUID16: %x", srvc_id->id.uuid.uuid.uuid16);
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get_service = true;
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}
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break;
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}
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case ESP_GATTC_SEARCH_CMPL_EVT:
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if (p_data->search_cmpl.status != ESP_GATT_OK){
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ESP_LOGE(GATTC_TAG, "search service failed, error status = %x", p_data->search_cmpl.status);
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break;
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}
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conn_id = p_data->search_cmpl.conn_id;
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if (get_service){
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esp_ble_gattc_get_characteristic(gattc_if, conn_id, &heart_rate_service_id, NULL);
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}
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break;
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case ESP_GATTC_GET_CHAR_EVT:
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if (p_data->get_char.status != ESP_GATT_OK) {
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ESP_LOGE(GATTC_TAG, "get char failed, error status = %x", p_data->get_char.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "GET CHAR: conn_id = %x, status %d", p_data->get_char.conn_id, p_data->get_char.status);
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ESP_LOGI(GATTC_TAG, "GET CHAR: srvc_id = %04x, char_id = %04x", p_data->get_char.srvc_id.id.uuid.uuid.uuid16, p_data->get_char.char_id.uuid.uuid.uuid16);
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if (p_data->get_char.char_id.uuid.uuid.uuid16 == REMOTE_NOTIFY_UUID) {
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ESP_LOGI(GATTC_TAG, "register notify");
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esp_ble_gattc_register_for_notify(gattc_if, gl_profile_tab[PROFILE_A_APP_ID].remote_bda, &heart_rate_service_id, &p_data->get_char.char_id);
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}
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esp_ble_gattc_get_characteristic(gattc_if, conn_id, &heart_rate_service_id, &p_data->get_char.char_id);
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break;
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case ESP_GATTC_REG_FOR_NOTIFY_EVT: {
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if (p_data->reg_for_notify.status != ESP_GATT_OK){
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ESP_LOGE(GATTC_TAG, "reg for notify failed, error status = %x", p_data->reg_for_notify.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "REG FOR_NOTIFY: srvc_id = %04x, char_id = %04x", p_data->reg_for_notify.srvc_id.id.uuid.uuid.uuid16, p_data->reg_for_notify.char_id.uuid.uuid.uuid16);
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uint16_t notify_en = 1;
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esp_ble_gattc_write_char_descr( gattc_if,
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conn_id,
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&heart_rate_service_id,
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&p_data->reg_for_notify.char_id,
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&remote_notify_descr_id,
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sizeof(notify_en),
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(uint8_t *)¬ify_en,
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ESP_GATT_WRITE_TYPE_RSP,
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ESP_GATT_AUTH_REQ_NONE);
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break;
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}
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case ESP_GATTC_NOTIFY_EVT:
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ESP_LOGI(GATTC_TAG, "ESP_GATTC_NOTIFY_EVT, receive notify value:");
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esp_log_buffer_hex(GATTC_TAG, p_data->notify.value, p_data->notify.value_len);
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//write back
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esp_ble_gattc_write_char(gattc_if,
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gl_profile_tab[PROFILE_A_APP_ID].conn_id,
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&heart_rate_service_id,
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&p_data->notify.char_id,
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p_data->notify.value_len,
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p_data->notify.value,
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ESP_GATT_WRITE_TYPE_RSP,
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ESP_GATT_AUTH_REQ_NONE);
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break;
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case ESP_GATTC_WRITE_DESCR_EVT:
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if (p_data->write.status != ESP_GATT_OK){
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ESP_LOGE(GATTC_TAG, "write descr failed, error status = %x", p_data->write.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "write descr success");
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break;
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case ESP_GATTC_SRVC_CHG_EVT: {
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esp_bd_addr_t bda;
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memcpy(bda, p_data->srvc_chg.remote_bda, sizeof(esp_bd_addr_t));
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ESP_LOGI(GATTC_TAG, "ESP_GATTC_SRVC_CHG_EVT, bd_addr:");
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esp_log_buffer_hex(GATTC_TAG, bda, sizeof(esp_bd_addr_t));
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break;
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}
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case ESP_GATTC_WRITE_CHAR_EVT:
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if (p_data->write.status != ESP_GATT_OK){
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ESP_LOGE(GATTC_TAG, "write char failed, error status = %x", p_data->write.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "Write char success ");
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break;
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case ESP_GATTC_DISCONNECT_EVT:
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ESP_LOGI(GATTC_TAG, "ESP_GATTC_DISCONNECT_EVT, status = %d", p_data->disconnect.status);
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connect = false;
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get_service = false;
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break;
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default:
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break;
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}
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}
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static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
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{
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uint8_t *adv_name = NULL;
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uint8_t adv_name_len = 0;
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switch (event) {
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case ESP_GAP_BLE_SET_LOCAL_PRIVACY_COMPLETE_EVT:
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if (param->local_privacy_cmpl.status != ESP_BT_STATUS_SUCCESS){
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ESP_LOGE(GATTC_TAG, "config local privacy failed, error code =%x", param->local_privacy_cmpl.status);
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break;
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}
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esp_err_t scan_ret = esp_ble_gap_set_scan_params(&ble_scan_params);
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if (scan_ret){
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ESP_LOGE(GATTC_TAG, "set scan params error, error code = %x", scan_ret);
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}
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break;
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case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: {
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//the unit of the duration is second
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uint32_t duration = 30;
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esp_ble_gap_start_scanning(duration);
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break;
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}
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case ESP_GAP_BLE_SCAN_START_COMPLETE_EVT:
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//scan start complete event to indicate scan start successfully or failed
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if (param->scan_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
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ESP_LOGE(GATTC_TAG, "scan start failed, error status = %x", param->scan_start_cmpl.status);
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break;
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}
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ESP_LOGI(GATTC_TAG, "Scan start success");
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break;
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case ESP_GAP_BLE_SEC_REQ_EVT:
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/* send the positive(true) security response to the peer device to accept the security request.
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If not accept the security request, should sent the security response with negative(false) accept value*/
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esp_ble_gap_security_rsp(param->ble_security.ble_req.bd_addr, true);
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break;
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case ESP_GAP_BLE_PASSKEY_NOTIF_EVT: ///the app will receive this evt when the IO has Output capability and the peer device IO has Input capability.
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///show the passkey number to the user to input it in the peer deivce.
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ESP_LOGE(GATTC_TAG, "The passkey Notify number:%d", param->ble_security.key_notif.passkey);
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break;
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case ESP_GAP_BLE_KEY_EVT:
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//shows the ble key info share with peer device to the user.
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ESP_LOGI(GATTC_TAG, "key type = %s", esp_key_type_to_str(param->ble_security.ble_key.key_type));
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break;
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case ESP_GAP_BLE_AUTH_CMPL_EVT: {
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esp_bd_addr_t bd_addr;
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memcpy(bd_addr, param->ble_security.auth_cmpl.bd_addr, sizeof(esp_bd_addr_t));
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ESP_LOGI(GATTC_TAG, "remote BD_ADDR: %08x%04x",\
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(bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
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(bd_addr[4] << 8) + bd_addr[5]);
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ESP_LOGI(GATTC_TAG, "address type = %d", param->ble_security.auth_cmpl.addr_type);
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ESP_LOGI(GATTC_TAG, "pair status = %s",param->ble_security.auth_cmpl.success ? "success" : "fail");
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break;
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}
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case ESP_GAP_BLE_SCAN_RESULT_EVT: {
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esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param;
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switch (scan_result->scan_rst.search_evt) {
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case ESP_GAP_SEARCH_INQ_RES_EVT:
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esp_log_buffer_hex(GATTC_TAG, scan_result->scan_rst.bda, 6);
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ESP_LOGI(GATTC_TAG, "Searched Adv Data Len %d, Scan Response Len %d", scan_result->scan_rst.adv_data_len, scan_result->scan_rst.scan_rsp_len);
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adv_name = esp_ble_resolve_adv_data(scan_result->scan_rst.ble_adv,
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ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len);
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ESP_LOGI(GATTC_TAG, "Searched Device Name Len %d", adv_name_len);
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esp_log_buffer_char(GATTC_TAG, adv_name, adv_name_len);
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ESP_LOGI(GATTC_TAG, "\n");
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||||
if (adv_name != NULL) {
|
||||
if (strlen(remote_device_name) == adv_name_len && strncmp((char *)adv_name, remote_device_name, adv_name_len) == 0) {
|
||||
ESP_LOGI(GATTC_TAG, "searched device %s\n", remote_device_name);
|
||||
if (connect == false) {
|
||||
connect = true;
|
||||
ESP_LOGI(GATTC_TAG, "connect to the remote device.");
|
||||
esp_ble_gap_stop_scanning();
|
||||
esp_ble_gattc_open(gl_profile_tab[PROFILE_A_APP_ID].gattc_if, scan_result->scan_rst.bda, true);
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
case ESP_GAP_SEARCH_INQ_CMPL_EVT:
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT:
|
||||
if (param->scan_stop_cmpl.status != ESP_BT_STATUS_SUCCESS){
|
||||
ESP_LOGE(GATTC_TAG, "Scan stop failed, error status = %x", param->scan_stop_cmpl.status);
|
||||
break;
|
||||
}
|
||||
ESP_LOGI(GATTC_TAG, "Stop scan successfully");
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param)
|
||||
{
|
||||
ESP_LOGI(GATTC_TAG, "EVT %d, gattc if %d", event, gattc_if);
|
||||
|
||||
/* If event is register event, store the gattc_if for each profile */
|
||||
if (event == ESP_GATTC_REG_EVT) {
|
||||
if (param->reg.status == ESP_GATT_OK) {
|
||||
gl_profile_tab[param->reg.app_id].gattc_if = gattc_if;
|
||||
} else {
|
||||
ESP_LOGI(GATTC_TAG, "Reg app failed, app_id %04x, status %d",
|
||||
param->reg.app_id,
|
||||
param->reg.status);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/* If the gattc_if equal to profile A, call profile A cb handler,
|
||||
* so here call each profile's callback */
|
||||
do {
|
||||
int idx;
|
||||
for (idx = 0; idx < PROFILE_NUM; idx++) {
|
||||
if (gattc_if == ESP_GATT_IF_NONE || /* ESP_GATT_IF_NONE, not specify a certain gatt_if, need to call every profile cb function */
|
||||
gattc_if == gl_profile_tab[idx].gattc_if) {
|
||||
if (gl_profile_tab[idx].gattc_cb) {
|
||||
gl_profile_tab[idx].gattc_cb(event, gattc_if, param);
|
||||
}
|
||||
}
|
||||
}
|
||||
} while (0);
|
||||
}
|
||||
|
||||
void app_main()
|
||||
{
|
||||
// Initialize NVS.
|
||||
esp_err_t ret = nvs_flash_init();
|
||||
if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
|
||||
ESP_ERROR_CHECK(nvs_flash_erase());
|
||||
ret = nvs_flash_init();
|
||||
}
|
||||
ESP_ERROR_CHECK( ret );
|
||||
|
||||
esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
|
||||
ret = esp_bt_controller_init(&bt_cfg);
|
||||
if (ret) {
|
||||
ESP_LOGE(GATTC_TAG, "%s initialize controller failed, error code = %x\n", __func__, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = esp_bt_controller_enable(ESP_BT_MODE_BTDM);
|
||||
if (ret) {
|
||||
ESP_LOGE(GATTC_TAG, "%s enable controller failed, error code = %x\n", __func__, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = esp_bluedroid_init();
|
||||
if (ret) {
|
||||
ESP_LOGE(GATTC_TAG, "%s init bluetooth failed, error code = %x\n", __func__, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = esp_bluedroid_enable();
|
||||
if (ret) {
|
||||
ESP_LOGE(GATTC_TAG, "%s enable bluetooth failed, error code = %x\n", __func__, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
//register the callback function to the gap module
|
||||
ret = esp_ble_gap_register_callback(esp_gap_cb);
|
||||
if (ret){
|
||||
ESP_LOGE(GATTC_TAG, "%s gap register error, error code = %x\n", __func__, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
//register the callback function to the gattc module
|
||||
ret = esp_ble_gattc_register_callback(esp_gattc_cb);
|
||||
if(ret){
|
||||
ESP_LOGE(GATTC_TAG, "%s gattc register error, error code = %x\n", __func__, ret);
|
||||
return;
|
||||
}
|
||||
|
||||
ret = esp_ble_gattc_app_register(PROFILE_A_APP_ID);
|
||||
if (ret){
|
||||
ESP_LOGE(GATTC_TAG, "%s gattc app register error, error code = %x\n", __func__, ret);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
# Override some defaults so BT stack is enabled
|
||||
# and WiFi disabled by default in this example
|
||||
CONFIG_BT_ENABLED=y
|
||||
CONFIG_WIFI_ENABLED=n
|
Loading…
Reference in a new issue