/* * SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 */ /**************************************************************************** * * This file is for iBeacon demo. It supports both iBeacon sender and receiver * which is distinguished by macros IBEACON_SENDER and IBEACON_RECEIVER, * * iBeacon is a trademark of Apple Inc. Before building devices which use iBeacon technology, * visit https://developer.apple.com/ibeacon/ to obtain a license. * ****************************************************************************/ #include <stdint.h> #include <string.h> #include <stdbool.h> #include <stdio.h> #include "nvs_flash.h" #include "esp_bt.h" #include "esp_gap_ble_api.h" #include "esp_gattc_api.h" #include "esp_gatt_defs.h" #include "esp_bt_main.h" #include "esp_bt_defs.h" #include "esp_ibeacon_api.h" #include "esp_log.h" #include "freertos/FreeRTOS.h" static const char* DEMO_TAG = "IBEACON_DEMO"; extern esp_ble_ibeacon_vendor_t vendor_config; ///Declare static functions static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param); #if (IBEACON_MODE == IBEACON_RECEIVER) static esp_ble_scan_params_t ble_scan_params = { .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_DISABLE }; #elif (IBEACON_MODE == IBEACON_SENDER) static esp_ble_adv_params_t ble_adv_params = { .adv_int_min = 0x20, .adv_int_max = 0x40, .adv_type = ADV_TYPE_NONCONN_IND, .own_addr_type = BLE_ADDR_TYPE_PUBLIC, .channel_map = ADV_CHNL_ALL, .adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY, }; #endif static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) { esp_err_t err; switch (event) { case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:{ #if (IBEACON_MODE == IBEACON_SENDER) esp_ble_gap_start_advertising(&ble_adv_params); #endif break; } case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: { #if (IBEACON_MODE == IBEACON_RECEIVER) //the unit of the duration is second, 0 means scan permanently uint32_t duration = 0; esp_ble_gap_start_scanning(duration); #endif break; } case ESP_GAP_BLE_SCAN_START_COMPLETE_EVT: //scan start complete event to indicate scan start successfully or failed if ((err = param->scan_start_cmpl.status) != ESP_BT_STATUS_SUCCESS) { ESP_LOGE(DEMO_TAG, "Scan start failed: %s", esp_err_to_name(err)); } break; case ESP_GAP_BLE_ADV_START_COMPLETE_EVT: //adv start complete event to indicate adv start successfully or failed if ((err = param->adv_start_cmpl.status) != ESP_BT_STATUS_SUCCESS) { ESP_LOGE(DEMO_TAG, "Adv start failed: %s", esp_err_to_name(err)); } 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: /* Search for BLE iBeacon Packet */ if (esp_ble_is_ibeacon_packet(scan_result->scan_rst.ble_adv, scan_result->scan_rst.adv_data_len)){ esp_ble_ibeacon_t *ibeacon_data = (esp_ble_ibeacon_t*)(scan_result->scan_rst.ble_adv); ESP_LOGI(DEMO_TAG, "----------iBeacon Found----------"); esp_log_buffer_hex("IBEACON_DEMO: Device address:", scan_result->scan_rst.bda, ESP_BD_ADDR_LEN ); esp_log_buffer_hex("IBEACON_DEMO: Proximity UUID:", ibeacon_data->ibeacon_vendor.proximity_uuid, ESP_UUID_LEN_128); uint16_t major = ENDIAN_CHANGE_U16(ibeacon_data->ibeacon_vendor.major); uint16_t minor = ENDIAN_CHANGE_U16(ibeacon_data->ibeacon_vendor.minor); ESP_LOGI(DEMO_TAG, "Major: 0x%04x (%d)", major, major); ESP_LOGI(DEMO_TAG, "Minor: 0x%04x (%d)", minor, minor); ESP_LOGI(DEMO_TAG, "Measured power (RSSI at a 1m distance):%d dbm", ibeacon_data->ibeacon_vendor.measured_power); ESP_LOGI(DEMO_TAG, "RSSI of packet:%d dbm", scan_result->scan_rst.rssi); } break; default: break; } break; } case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT: if ((err = param->scan_stop_cmpl.status) != ESP_BT_STATUS_SUCCESS){ ESP_LOGE(DEMO_TAG, "Scan stop failed: %s", esp_err_to_name(err)); } else { ESP_LOGI(DEMO_TAG, "Stop scan successfully"); } break; case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT: if ((err = param->adv_stop_cmpl.status) != ESP_BT_STATUS_SUCCESS){ ESP_LOGE(DEMO_TAG, "Adv stop failed: %s", esp_err_to_name(err)); } else { ESP_LOGI(DEMO_TAG, "Stop adv successfully"); } break; default: break; } } void ble_ibeacon_appRegister(void) { esp_err_t status; ESP_LOGI(DEMO_TAG, "register callback"); //register the scan callback function to the gap module if ((status = esp_ble_gap_register_callback(esp_gap_cb)) != ESP_OK) { ESP_LOGE(DEMO_TAG, "gap register error: %s", esp_err_to_name(status)); return; } } void ble_ibeacon_init(void) { esp_bluedroid_init(); esp_bluedroid_enable(); ble_ibeacon_appRegister(); } void app_main(void) { ESP_ERROR_CHECK(nvs_flash_init()); 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(); esp_bt_controller_init(&bt_cfg); esp_bt_controller_enable(ESP_BT_MODE_BLE); ble_ibeacon_init(); /* set scan parameters */ #if (IBEACON_MODE == IBEACON_RECEIVER) esp_ble_gap_set_scan_params(&ble_scan_params); #elif (IBEACON_MODE == IBEACON_SENDER) esp_ble_ibeacon_t ibeacon_adv_data; esp_err_t status = esp_ble_config_ibeacon_data (&vendor_config, &ibeacon_adv_data); if (status == ESP_OK){ esp_ble_gap_config_adv_data_raw((uint8_t*)&ibeacon_adv_data, sizeof(ibeacon_adv_data)); } else { ESP_LOGE(DEMO_TAG, "Config iBeacon data failed: %s", esp_err_to_name(status)); } #endif }