// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD // // 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. /**************************************************************************** * * This file is for gatt client. It can scan ble device, connect one device, * ****************************************************************************/ #include #include #include #include #include "controller.h" #include "bt.h" #include "bt_trace.h" #include "bt_types.h" #include "btm_api.h" #include "bta_api.h" #include "bta_gatt_api.h" #include "esp_gap_ble_api.h" #include "esp_gattc_api.h" #include "esp_gatt_defs.h" #include "esp_bt_main.h" ///Declare static functions static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param); static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param); static void gattc_profile_a_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param); #define BT_BD_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x" #define BT_BD_ADDR_HEX(addr) addr[0], addr[1], addr[2], addr[3], addr[4], addr[5] static bool connect = false; static const char device_name[] = "Heart Rate"; static esp_ble_scan_params_t ble_scan_params = { .scan_type = BLE_SCAN_TYPE_ACTIVE, .own_addr_type = ESP_PUBLIC_ADDR, .scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL, .scan_interval = 0x50, .scan_window = 0x30 }; #define PROFILE_NUM 2 #define PROFILE_A_APP_ID 0 #define PROFILE_B_APP_ID 1 struct gattc_profile_inst { esp_gattc_cb_t gattc_cb; uint16_t gattc_if; uint16_t app_id; uint16_t conn_id; }; /* One gatt-based profile one app_id and one gattc_if, this array will store the gattc_if returned by ESP_GATTS_REG_EVT */ static struct gattc_profile_inst gl_profile_tab[PROFILE_NUM] = { [PROFILE_A_APP_ID] = { .gattc_cb = gattc_profile_a_event_handler, .gattc_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */ }, [PROFILE_B_APP_ID] = { .gattc_cb = NULL, /* This demo does not implement, similar as profile A */ .gattc_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */ }, }; static void gattc_profile_a_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param) { uint16_t conn_id = 0; esp_ble_gattc_cb_param_t *p_data = (esp_ble_gattc_cb_param_t *)param; switch (event) { case ESP_GATTC_REG_EVT: LOG_INFO("REG_EVT\n"); esp_ble_gap_set_scan_params(&ble_scan_params); break; case ESP_GATTC_OPEN_EVT: conn_id = p_data->open.conn_id; LOG_INFO("ESP_GATTC_OPEN_EVT conn_id %d, if %d, status %d\n", conn_id, gattc_if, p_data->open.status); esp_ble_gattc_search_service(gattc_if, conn_id, NULL); break; case ESP_GATTC_SEARCH_RES_EVT: { esp_gatt_srvc_id_t *srvc_id = &p_data->search_res.srvc_id; conn_id = p_data->open.conn_id; LOG_INFO("SEARCH RES: conn_id = %x\n", conn_id); if (srvc_id->id.uuid.len == ESP_UUID_LEN_16) { LOG_INFO("UUID16: %x\n", srvc_id->id.uuid.uuid.uuid16); } else if (srvc_id->id.uuid.len == ESP_UUID_LEN_32) { LOG_INFO("UUID32: %x\n", srvc_id->id.uuid.uuid.uuid32); } else if (srvc_id->id.uuid.len == ESP_UUID_LEN_128) { LOG_INFO("UUID128: %x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x,%x\n", srvc_id->id.uuid.uuid.uuid128[0], srvc_id->id.uuid.uuid.uuid128[1], srvc_id->id.uuid.uuid.uuid128[2], srvc_id->id.uuid.uuid.uuid128[3], srvc_id->id.uuid.uuid.uuid128[4], srvc_id->id.uuid.uuid.uuid128[5], srvc_id->id.uuid.uuid.uuid128[6], srvc_id->id.uuid.uuid.uuid128[7], srvc_id->id.uuid.uuid.uuid128[8], srvc_id->id.uuid.uuid.uuid128[9], srvc_id->id.uuid.uuid.uuid128[10], srvc_id->id.uuid.uuid.uuid128[11], srvc_id->id.uuid.uuid.uuid128[12], srvc_id->id.uuid.uuid.uuid128[13], srvc_id->id.uuid.uuid.uuid128[14], srvc_id->id.uuid.uuid.uuid128[15]); } else { LOG_ERROR("UNKNOWN LEN %d\n", srvc_id->id.uuid.len); } break; } case ESP_GATTC_SEARCH_CMPL_EVT: conn_id = p_data->search_cmpl.conn_id; LOG_INFO("SEARCH_CMPL: conn_id = %x, status %d\n", conn_id, p_data->search_cmpl.status); break; default: break; } } static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) { uint8_t *adv_name = NULL; uint8_t adv_name_len = 0; switch (event) { case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: { //the unit of the duration is second uint32_t duration = 10; esp_ble_gap_start_scanning(duration); break; } case ESP_GAP_BLE_SCAN_RESULT_EVT: { esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param; switch (scan_result->scan_rst.search_evt) { case ESP_GAP_SEARCH_INQ_RES_EVT: for (int i = 0; i < 6; i++) { LOG_INFO("%x:", scan_result->scan_rst.bda[i]); } LOG_INFO("\n"); adv_name = esp_ble_resolve_adv_data(scan_result->scan_rst.ble_adv, ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len); LOG_INFO("adv_name_len=%x\n", adv_name_len); for (int j = 0; j < adv_name_len; j++) { LOG_INFO("%c", adv_name[j]); } LOG_INFO("\n"); for (int j = 0; j < adv_name_len; j++) { LOG_INFO("%c", device_name[j]); } LOG_INFO("\n"); if (adv_name != NULL) { if (strcmp((char *)adv_name, device_name) == 0) { LOG_INFO("the name equal to Heart Rate\n"); if (connect == false) { connect = true; LOG_INFO("Connect to the remote device.\n"); 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; } 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) { LOG_INFO("EVT %d, gattc if %d\n", 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 { LOG_INFO("Reg app failed, app_id %04x, status %d\n", 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 ble_client_appRegister(void) { esp_err_t status; LOG_INFO("register callback\n"); //register the scan callback function to the gap moudule if ((status = esp_ble_gap_register_callback(esp_gap_cb)) != ESP_OK) { LOG_ERROR("gap register error, error code = %x\n", status); return; } //register the callback function to the gattc module if ((status = esp_ble_gattc_register_callback(esp_gattc_cb)) != ESP_OK) { LOG_ERROR("gattc register error, error code = %x\n", status); return; } esp_ble_gattc_app_register(PROFILE_A_APP_ID); } void gattc_client_test(void) { esp_init_bluetooth(); esp_enable_bluetooth(); ble_client_appRegister(); } void app_main() { bt_controller_init(); gattc_client_test(); }