\n
\u7b2c\u4e00\u6b65\u662f\u521d\u59cb\u5316\u975e\u6613\u5931\u6027\u5b58\u5132\u5668\uff08NVS\uff09\u548c\u85cd\u7259\u529f\u80fd\u3002NVS \u662f BLE \u529f\u80fd\u6240\u9700\u7684\uff0c\u56e0\u70ba\u5b83\u7528\u65bc\u6301\u4e45\u5b58\u5132\u5404\u7a2e\u914d\u7f6e\u53c3\u6578\u3002<\/pre>\n\n\n\nvoid init_nvs(void) {\n esp_err_t ret = nvs_flash_init();\n if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {\n ESP_ERROR_CHECK(nvs_flash_erase());\n ret = nvs_flash_init();\n }\n ESP_ERROR_CHECK(ret);\n}\n\nvoid init_ble(void) {\n esp_err_t ret;\n\n \/\/ Initialize the Bluetooth controller\n esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();\n ret = esp_bt_controller_init(&bt_cfg);\n if (ret) {\n ESP_LOGE(TAG, \"Failed to initialize BT controller: %s\", esp_err_to_name(ret));\n return;\n }\n\n \/\/ Enable the Bluetooth controller\n ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);\n if (ret) {\n ESP_LOGE(TAG, \"Failed to enable BT controller: %s\", esp_err_to_name(ret));\n return;\n }\n\n \/\/ Initialize Bluedroid\n ret = esp_bluedroid_init();\n if (ret) {\n ESP_LOGE(TAG, \"Failed to initialize Bluedroid: %s\", esp_err_to_name(ret));\n return;\n }\n\n \/\/ Enable Bluedroid\n ret = esp_bluedroid_enable();\n if (ret) {\n ESP_LOGE(TAG, \"Failed to enable Bluedroid: %s\", esp_err_to_name(ret));\n return;\n }\n}<\/code><\/pre>\n\n\n\n\u5728\u9019\u88e1\uff0c\u6211\u5011\u4f7f\u7528 nvs_flash_init() \u521d\u59cb\u5316 NVS \u5b58\u5132\uff0c\u4e26\u4f7f\u7528 esp_bt_controller_init() \u521d\u59cb\u5316\u85cd\u7259\u63a7\u5236\u5668\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n\u8a2d\u7f6e BLE \u6383\u63cf\u53c3\u6578<\/h2>\n\n\n\n\n
<\/div>\n\n\n\n
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\u85cd\u7259\u529f\u80fd\u555f\u7528\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u914d\u7f6e\u6383\u63cf\u53c3\u6578\uff0c\u5982\u6383\u63cf\u985e\u578b\u3001\u5730\u5740\u985e\u578b\u548c\u904e\u6ffe\u7b56\u7565\u3002<\/pre>\n\n\n\nesp_ble_scan_params_t ble_scan_params = {\n .scan_type = BLE_SCAN_TYPE_ACTIVE,\n .own_addr_type = BLE_ADDR_TYPE_PUBLIC,\n .scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL,\n .scan_duplicate = BLE_SCAN_DUPLICATE_ENABLE,\n .scan_interval = 0x50,\n .scan_window = 0x30,\n};<\/code><\/pre>\n\n\n\n\u6383\u63cf\u985e\u578b\uff1a\u6211\u5011\u4f7f\u7528\u7684\u662f\u4e3b\u52d5\u6383\u63cf\uff0c\u9019\u610f\u5473\u8457\u6383\u63cf\u5668\u6703\u5411 BLE \u8a2d\u5099\u767c\u9001\u8acb\u6c42\u4ee5\u7372\u53d6\u66f4\u8a73\u7d30\u7684\u4fe1\u606f\u3002
\u6383\u63cf\u904e\u6ffe\u7b56\u7565\uff1a\u5141\u8a31\u6383\u63cf\u6240\u6709\u8a2d\u5099\u3002
\u6383\u63cf\u9593\u9694\u548c\u7a97\u53e3\uff1a\u9019\u4e9b\u5b9a\u7fa9\u4e86\u6383\u63cf\u767c\u751f\u7684\u983b\u7387\u548c\u6301\u7e8c\u6642\u9593\u3002\u8abf\u6574\u9019\u4e9b\u503c\u6703\u5f71\u97ff\u97ff\u61c9\u901f\u5ea6\u548c\u529f\u8017\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n\u8655\u7406\u6383\u63cf\u7d50\u679c<\/h2>\n\n\n\n\n
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\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u8a3b\u518a\u4e00\u500b\u56de\u8abf\u51fd\u6578\u4f86\u8655\u7406\u6383\u63cf\u7d50\u679c\u3002esp_ble_gap_register_callback() \u51fd\u6578\u7528\u4f86\u8a3b\u518a\u4e8b\u4ef6\u8655\u7406\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u5c07\u8655\u7406\u6383\u63cf\u7d50\u679c\u4e26\u8a18\u9304\u8a2d\u5099\u540d\u7a31\u548c RSSI\u3002
\u6211\u5011\u5c07\u4f7f\u7528\u4e00\u500b\u8f14\u52a9\u51fd\u6578\u5f9e\u5ee3\u64ad\u6578\u64da\u4e2d\u63d0\u53d6\u8a2d\u5099\u540d\u7a31\u3002\u5982\u679c\u6c92\u6709\u627e\u5230\u540d\u7a31\uff0c\u6211\u5011\u5c07\u8a2d\u5099\u6a19\u8a18\u70ba\u201c\u672a\u77e5\u8a2d\u5099\u201d\u3002<\/pre>\n\n\n\nstatic void get_device_name(esp_ble_gap_cb_param_t *param, char *name, int name_len)\n{\n uint8_t *adv_name = NULL;\n uint8_t adv_name_len = 0;\n\n \/\/ Extract the device name from the advertisement data\n adv_name = esp_ble_resolve_adv_data(param->scan_rst.ble_adv, ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len);\n\n if (adv_name != NULL && adv_name_len > 0) {\n \/\/ Copy the device name to the output buffer\n snprintf(name, name_len, \"%.*s\", adv_name_len, adv_name);\n } else {\n \/\/ If no name is found, show \"Unknown device\"\n snprintf(name, name_len, \"Unknown device\");\n }\n}<\/code><\/pre>\n\n\n\n\u6b64\u51fd\u6578\u4f7f\u7528 esp_ble_resolve_adv_data() \u5f9e BLE \u5ee3\u64ad\u5305\u4e2d\u63d0\u53d6\u540d\u7a31\u3002<\/pre>\n\n\n\n\u63a5\u4e0b\u4f86\uff0c\u8b93\u6211\u5011\u5275\u5efa GAP \u4e8b\u4ef6\u8655\u7406\u5668\u4f86\u7ba1\u7406\u4e0d\u540c\u7684 BLE \u4e8b\u4ef6\uff0c\u7279\u5225\u662f\u6383\u63cf\u7d50\u679c\u4e8b\u4ef6\u3002<\/pre>\n\n\n\nvoid gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)\n{\n switch (event) {\n case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT:\n if (param->scan_param_cmpl.status == ESP_BT_STATUS_SUCCESS) {\n ESP_LOGI(TAG, \"Scan parameters set, starting scan...\");\n esp_ble_gap_start_scanning(10); \/\/ Scan for 10 seconds\n } else {\n ESP_LOGE(TAG, \"Failed to set scan parameters\");\n }\n break;\n\n case ESP_GAP_BLE_SCAN_RESULT_EVT:\n if (param->scan_rst.search_evt == ESP_GAP_SEARCH_INQ_RES_EVT) {\n \/\/ Get the device name\n char device_name[64];\n get_device_name(param, device_name, sizeof(device_name));\n\n \/\/ Log the device name and RSSI\n ESP_LOGI(TAG, \"Device found: Name: %s, RSSI %d\", device_name, param->scan_rst.rssi);\n }\n break;\n\n case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT:\n ESP_LOGI(TAG, \"Scan complete\");\n break;\n\n default:\n break;\n }\n}<\/code><\/pre>\n\n\n\n\u5728\u4e8b\u4ef6\u8655\u7406\u5668\u4e2d\uff1a
ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT\uff1a\u7576\u6383\u63cf\u53c3\u6578\u8a2d\u7f6e\u5b8c\u6210\u6642\uff0cESP32 \u958b\u59cb\u6383\u63cf\u3002
ESP_GAP_BLE_SCAN_RESULT_EVT\uff1a\u8655\u7406\u6383\u63cf\u7d50\u679c\uff0c\u4e26\u8a18\u9304\u8a2d\u5099\u540d\u7a31\u548c RSSI\u3002
ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT\uff1a\u6383\u63cf\u5b8c\u6210\u5f8c\uff0c\u8a18\u9304\u4e00\u689d\u5b8c\u6210\u8a0a\u606f\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n\u904b\u884c BLE \u6383\u63cf\u5668<\/h2>\n\n\n\n\n
<\/div>\n\n\n\n
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\u6700\u5f8c\uff0c\u5c07\u6240\u6709\u4ee3\u78bc\u7d44\u5408\u5230 app_main() \u51fd\u6578\u4e2d...<\/pre>\n\n\n\nvoid app_main(void)\n{\n \/\/ Initialize NVS\n init_nvs();\n\n \/\/ Initialize BLE\n init_ble();\n\n \/\/ Register GAP callback\n esp_ble_gap_register_callback(gap_event_handler);\n\n \/\/ Set scan parameters\n esp_err_t ret = esp_ble_gap_set_scan_params(&ble_scan_params);\n if (ret == ESP_OK) {\n ESP_LOGI(TAG, \"BLE scan parameters set successfully\");\n } else {\n ESP_LOGE(TAG, \"Failed to set scan params: %s\", esp_err_to_name(ret));\n }\n}<\/code><\/pre>\n\n\n\n\u9019\u500b\u51fd\u6578\u521d\u59cb\u5316 NVS\uff0c\u555f\u7528 BLE\uff0c\u8a3b\u518a GAP \u56de\u8abf\uff0c\u4e26\u8a2d\u7f6e\u6383\u63cf\u53c3\u6578\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n\u7de8\u8b6f\u548c\u71d2\u9304<\/h2>\n\n\n\n\n
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\u5728 VSCode \u4e2d\u627e\u5230 \"ESP32-IDF : Build, Flash and Monitor\" ICON \u57f7\u884c\u548c\u71d2\u9304\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n\u67e5\u770b\u7d50\u679c<\/h2>\n\n\n\n\n
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I (5010) BLE_SCAN: Device found: Name: MyBLEDevice, RSSI -65\nI (6020) BLE_SCAN: Device found: Name: Unknown device, RSSI -72<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n\u7d50\u8ad6<\/h2>\n\n\n\n\n
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\u901a\u904e\u9019\u6bb5\u4ee3\u78bc\uff0c\u4f60\u73fe\u5728\u53ef\u4ee5\u4f7f\u7528 ESP32 \u6383\u63cf BLE \u8a2d\u5099\u4e26\u8a18\u9304\u5b83\u5011\u7684\u540d\u7a31\u548c\u4fe1\u865f\u5f37\u5ea6\uff08RSSI\uff09\u3002BLE \u662f\u7269\u806f\u7db2\u9805\u76ee\u4e2d\u7684\u4e00\u500b\u5f37\u5927\u5de5\u5177\uff0c\u800c\u6383\u63cf\u8a2d\u5099\u53ea\u662f\u958b\u59cb\u3002\u4f60\u53ef\u4ee5\u9032\u4e00\u6b65\u64f4\u5c55\u6b64\u4ee3\u78bc\u4f86\u9023\u63a5\u7279\u5b9a\u8a2d\u5099\u3001\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\uff0c\u751a\u81f3\u5ee3\u64ad\u81ea\u5df1\u7684 BLE \u8cc7\u8a0a\u3002
\u53ef\u4ee5\u8abf\u6574\u6383\u63cf\u9593\u9694\u548c\u7a97\u53e3\uff0c\u6216\u8005\u4fee\u6539\u65e5\u8a8c\u8a18\u9304\u4f86\u904e\u6ffe\u7279\u5b9a\u7684\u8a2d\u5099\u540d\u7a31\u6216 RSSI\u3002ESP32 \u5728 BLE \u9805\u76ee\u4e0a\u63d0\u4f9b\u4e86\u6975\u5927\u7684\u9748\u6d3b\u6027\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n
\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7c21\u4ecb ESP32 \u662f\u7531 Espressif Systems \u958b\u767c\u7684\u4e00\u6b3e\u4f4e\u6210\u672c\u3001\u4f4e\u529f\u8017\u7684\u5fae\u63a7\u5236\u5668\uff0c\u5177\u6709 Wi-F […]<\/p>\n","protected":false},"author":1,"featured_media":2631,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,53,83],"tags":[61,27,63,20,60,10,64,11,62],"class_list":["post-2557","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-module","category-esp32","category-featured","tag-bluetooth","tag-c","tag-firmware","tag-hardware","tag-iot","tag-mcu","tag-module","tag-tutorial","tag-wifi"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/2557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/comments?post=2557"}],"version-history":[{"count":8,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/2557\/revisions"}],"predecessor-version":[{"id":2679,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/2557\/revisions\/2679"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media\/2631"}],"wp:attachment":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media?parent=2557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/categories?post=2557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/tags?post=2557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}