#include #include "ble_scan_bsp.h" #include "freertos/FreeRTOS.h" #include "esp_log.h" #include #include #include #include #define GATTC_TAG "GATTC_DEMO" QueueHandle_t ble_queue; #define REMOTE_SERVICE_UUID 0x00FF #define REMOTE_NOTIFY_CHAR_UUID 0xFF01 #define PROFILE_NUM 1 #define PROFILE_A_APP_ID 0 #define INVALID_HANDLE 0 /* 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_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param); static esp_ble_scan_params_t ble_scan_params = { //ble scan parameter Settings .scan_type = BLE_SCAN_TYPE_ACTIVE, .own_addr_type = BLE_ADDR_TYPE_PUBLIC, .scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL, .scan_interval = 0x50, .scan_window = 0x30, .scan_duplicate = BLE_SCAN_DUPLICATE_ENABLE //Filter duplicate ads }; struct gattc_profile_inst { esp_gattc_cb_t gattc_cb; uint16_t gattc_if; uint16_t app_id; uint16_t conn_id; uint16_t service_start_handle; uint16_t service_end_handle; uint16_t char_handle; esp_bd_addr_t remote_bda; }; /* 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_event_handler, .gattc_if = ESP_GATT_IF_NONE, /* Didn't get the initial value, so it's ESP GATT IF NONE */ }, }; 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) // This function is called by the esp gattc cb callback function and has the opportunity to be executed { //esp_ble_gattc_cb_param_t *p_data = (esp_ble_gattc_cb_param_t *)param; switch (event) { case ESP_GATTC_REG_EVT: //This callback function, executed by the esp gattc cb callback function, passes in the event parameters ESP_LOGI(GATTC_TAG, "REG_EVT"); //esp_err_t scan_ret = esp_ble_gap_set_scan_params(&ble_scan_params); //Set scan parameters //if (scan_ret) //{ // ESP_LOGE(GATTC_TAG, "set scan params error, error code = %x", scan_ret); //} break; case ESP_GATTC_CFG_MTU_EVT: //This event is triggered when the GATT client successfully configures the mtu by calling esp ble gattc set mtu() if (param->cfg_mtu.status != ESP_GATT_OK) { ESP_LOGE(GATTC_TAG,"config mtu failed, error status = %x", param->cfg_mtu.status); } 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); break; default: break; } } static uint8_t value = 0; 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: //This event is triggered after the esp ble gap set scan params() function is successfully invoked to set scan parameters { //esp_ble_gap_start_scanning(duration); //Scan time of 30 seconds break; } case ESP_GAP_BLE_SCAN_START_COMPLETE_EVT: //This event is triggered after the esp ble gap start scanning() function is successfully invoked to start scanning { if (param->scan_start_cmpl.status != ESP_BT_STATUS_SUCCESS) //To check whether the ESP BT is successfully started, the value must equal to ESP BT STATUS SUCCESS { ESP_LOGE(GATTC_TAG, "scan start failed, error status = %x", param->scan_start_cmpl.status); break; } ESP_LOGI(GATTC_TAG, "scan start success"); break; } case ESP_GAP_BLE_SCAN_RESULT_EVT: //Enter once every scan, not wait for the scan to finish before entering { esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param; switch (scan_result->scan_rst.search_evt) // Search event type { case ESP_GAP_SEARCH_INQ_RES_EVT: ////esp_log_buffer_hex(GATTC_TAG, scan_result->scan_rst.bda, 6); //Bluetooth device address adv data len is the length of the AD data for the scanned device. //Purpose: Advertising data is the message that the device sends when it broadcasts. This data typically includes the name of the device, service UUID, manufacturer data, and so on. //The length of the AD data is specified by adv data len Scan response data is additional information returned by the device after receiving a request from the scan device. Typically, it contains more information about the device, such as the full device name or other service information. //Scenario: When a device (such as a phone or other BLE device) scans an AD pack, it can send a scan request to request more information. The target device will respond to this request and send a scan of the response data ////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); //adv_name = esp_ble_resolve_adv_data(scan_result->scan_rst.ble_adv,ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len); //NULL is returned if the name is not scanned if(xQueueSend(ble_queue,scan_result->scan_rst.bda,0) == pdTRUE) { value++; if(value == 20) { value = 0; esp_ble_gap_stop_scanning(); //Stop scanning } } /*if (adv_name != NULL) { //ESP_LOGI(GATTC_TAG, "adv_name: %s", adv_name); //esp_ble_gap_stop_scanning(); //Stop scanning //esp_ble_gattc_open(gl_profile_tab[PROFILE_A_APP_ID].gattc_if, scan_result->scan_rst.bda, scan_result->scan_rst.ble_addr_type, true); //Open gattc and start the connection }*/ break; case ESP_GAP_SEARCH_INQ_CMPL_EVT: //The event is used to notify the scanning time of the BLE device when the scanning operation is completed value = 0; break; default: break; } break; } case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT: //Usually triggered after you call esp ble gap stop scanning() function to stop scanning 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) { /* If event is register event, store the gattc_if for each profile */ if (event == ESP_GATTC_REG_EVT) // Description The event occurred when the GATT client was registered { if (param->reg.status == ESP_GATT_OK) // Get running status { gl_profile_tab[param->reg.app_id].gattc_if = gattc_if; // param->reg.app id Get the ID, which is the gattc if generated automatically by the system printf("gattc_if:%d\n",gattc_if); } else { ESP_LOGI(GATTC_TAG, "reg app failed, app_id %04x, status %d",param->reg.app_id,param->reg.status); // Otherwise, the corresponding error structure is displayed return; //Returns, does not execute the following } } do { int idx; for (idx = 0; idx < PROFILE_NUM; idx++) { if (gattc_if == ESP_GATT_IF_NONE || gattc_if == gl_profile_tab[idx].gattc_if) //if the callback reports gattc if/gatts if as an ESP GATT IF NONE macro, this event does not correspond to any application { if (gl_profile_tab[idx].gattc_cb) { gl_profile_tab[idx].gattc_cb(event, gattc_if, param); //Call the callback function } } } } while (0); } static void ble_scan_resources_init(void) { ble_queue = xQueueCreate( 60 , sizeof(uint8_t) * 6); } void ble_scan_prepare(void) { ble_scan_resources_init(); ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT)); } void ble_stack_init(void) { esp_err_t ret; //ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT)); 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: %s\n", __func__, esp_err_to_name(ret)); return; } ret = esp_bt_controller_enable(ESP_BT_MODE_BLE); if (ret) { ESP_LOGE(GATTC_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret)); return; } ret = esp_bluedroid_init(); if (ret) { ESP_LOGE(GATTC_TAG, "%s init bluetooth failed: %s\n", __func__, esp_err_to_name(ret)); return; } ret = esp_bluedroid_enable(); if (ret) { ESP_LOGE(GATTC_TAG, "%s enable bluetooth failed: %s\n", __func__, esp_err_to_name(ret)); return; } ret = esp_ble_gap_register_callback(esp_gap_cb); if (ret) { ESP_LOGE(GATTC_TAG, "%s gap register failed, error code = %x\n", __func__, ret); return; } ret = esp_ble_gattc_register_callback(esp_gattc_cb); if(ret) { ESP_LOGE(GATTC_TAG, "%s gattc register failed, 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 failed, error code = %x\n", __func__, ret); } esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(500); if (local_mtu_ret) { ESP_LOGE(GATTC_TAG, "set local MTU failed, error code = %x", local_mtu_ret); } } void ble_scan_start(void) { esp_ble_gap_set_scan_params(&ble_scan_params);//set scan esp_ble_gap_start_scanning(3); //Scan time of 3 seconds } void ble_stack_deinit(void) { if(value != 0)esp_ble_gap_stop_scanning(); esp_ble_gattc_app_unregister(gl_profile_tab[0].gattc_if); esp_bluedroid_disable(); esp_bluedroid_deinit(); esp_bt_controller_disable(); esp_bt_controller_deinit(); }