{"id":2464,"date":"2024-09-18T15:40:20","date_gmt":"2024-09-18T07:40:20","guid":{"rendered":"https:\/\/saludpcb.com\/zh\/?p=2464"},"modified":"2024-12-03T09:59:22","modified_gmt":"2024-12-03T01:59:22","slug":"wifi-ssid-scanner-using-esp32-idf","status":"publish","type":"post","link":"https:\/\/saludpcb.com\/zh\/wifi-ssid-scanner-using-esp32-idf\/","title":{"rendered":"ESP32 \u6383\u63cf WIFI SSID \u4f7f\u7528 IDF-SDK"},"content":{"rendered":"\n<hr class=\"wp-block-separator alignwide has-text-color has-palette-color-1-color has-alpha-channel-opacity has-palette-color-1-background-color has-background is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u5167\u5bb9<\/h2><nav><ul><li class=\"\"><a href=\"#\u7c21\u4ecb\">\u7c21\u4ecb<\/a><\/li><li class=\"\"><a href=\"#\u5b89\u88dd-vs-code-\u548c-esp-idf-vs-code-\u64f4\u5c55\">\u5b89\u88dd VSCode \u548c ESP-IDF VSCode \u64f4\u5c55<\/a><\/li><li class=\"\"><a href=\"#esp-32-dev-kit-\u958b\u767c\u6a21\u7d44\">ESP32 DevKit \u958b\u767c\u6a21\u7d44<\/a><\/li><li class=\"\"><a href=\"#\u65b0\u5efa-esp-32-\u5c08\u6848\">\u65b0\u5efa ESP32 \u5c08\u6848<\/a><\/li><li class=\"\"><a href=\"#\u7de8\u5beb\u4ee3\u78bc\">\u7de8\u5beb\u4ee3\u78bc<\/a><\/li><li class=\"\"><a href=\"#\u7de8\u8b6f\u548c\u71d2\u9304\">\u7de8\u8b6f\u548c\u71d2\u9304<\/a><\/li><li class=\"\"><a href=\"#\u67e5\u770b\u7d50\u679c\">\u67e5\u770b\u7d50\u679c<\/a><\/li><li class=\"\"><a href=\"#\u7d50\u8ad6\">\u7d50\u8ad6<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7c21\u4ecb\">\u7c21\u4ecb<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u4f7f\u7528 ESP32 IDF\uff08Espressif IoT Development Framework\uff09\u4f86\u6383\u63cf\u9644\u8fd1\u7684 <a href=\"https:\/\/docs.espressif.com\/projects\/esp-idf\/en\/latest\/esp32\/api-reference\/network\/esp_wifi.html\" target=\"_blank\" rel=\"noopener\">SSID<\/a>\uff08Wi-Fi \u7db2\u8def\u540d\u7a31\uff09\u662f\u4e00\u9805\u5e38\u898b\u7684\u529f\u80fd\u3002\u900f\u904e ESP32 \u7684 Wi-Fi \u6a21\u7d44\uff0c\u8a2d\u5099\u53ef\u4ee5\u6383\u63cf\u5468\u570d\u7684 Wi-Fi \u7db2\u8def\u4e26\u53d6\u5f97\u76f8\u95dc\u8cc7\u8a0a\uff0c\u4f8b\u5982 SSID\u3001\u8a0a\u865f\u5f37\u5ea6\uff08RSSI\uff09\u7b49\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u5b89\u88dd-vs-code-\u548c-esp-idf-vs-code-\u64f4\u5c55\">\u5b89\u88dd VSCode \u548c ESP-IDF VSCode \u64f4\u5c55<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u78ba\u4fdd\u4f60\u5df2\u7d93\u5b89\u88dd\u548c\u914d\u7f6e\u597d\u4e86 ESP-IDF \u958b\u767c\u74b0\u5883\u3002\u60a8\u4e5f\u53ef\u4ee5\u53c3\u8003 <a href=\"https:\/\/saludpcb.com\/zh\/esp32-tutorial-esp-idf-with-vscode\/\">ESP32 \u5165\u9580\u5230\u7cbe\u901a \u2013 \u5728 VSCode \u5b89\u88dd ESP-IDF \u63d2\u4ef6<\/a> \u9019\u7bc7\u6587\u7ae0\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"esp-32-dev-kit-\u958b\u767c\u6a21\u7d44\">ESP32 DevKit \u958b\u767c\u6a21\u7d44<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u9078\u64c7\u4e00\u500b ESP32 \u6a21\u7d44\u5982 <a href=\"https:\/\/www.espressif.com\/en\/products\/modules\" target=\"_blank\" rel=\"noopener\">ESP32 DevKitC V4<\/a>\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u65b0\u5efa-esp-32-\u5c08\u6848\">\u65b0\u5efa ESP32 \u5c08\u6848<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u5229\u7528\u5728 VSCode \u7684 IDF \u63d2\u4ef6\u4f86\u65b0\u5efa\u4e00\u500b ESP32 \u5c08\u6848\u53ef\u53c3\u8003 <a href=\"https:\/\/saludpcb.com\/zh\/esp32-tutorial-how-to-create-an-esp32-project-with-vscode\/\">ESP32 \u5165\u9580\u5230\u7cbe\u901a \u2013 \u5982\u4f55\u7528 VSCode \u5275\u5efa ESP32 \u5c08\u6848<\/a>\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7de8\u5beb\u4ee3\u78bc\">\u7de8\u5beb\u4ee3\u78bc<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 ESP-IDF \u4f86\u6383\u63cf Wi-Fi \u7db2\u8def\u7684\u7a0b\u5f0f\u7bc4\u4f8b\u3002\u5b83\u5c07\u6383\u63cf\u5468\u570d\u7684 Wi-Fi \u7db2\u8def\uff0c\u4e26\u5217\u5370\u51fa\u5b83\u5011\u7684 SSID \u53ca\u8a0a\u865f\u5f37\u5ea6\uff08RSSI\uff09\u3002<\/pre>\n\n\n\n<pre class=\"wp-block-code has-palette-color-4-color has-text-color has-link-color wp-elements-7b7e17530da0df8b310a60847971673a\"><code lang=\"c\" class=\"language-c\">#include \"freertos\/FreeRTOS.h\"\n#include \"freertos\/task.h\"\n#include \"esp_wifi.h\"\n#include \"esp_log.h\"\n#include \"nvs_flash.h\"\n\n#define DEFAULT_SCAN_LIST_SIZE 20  \/\/ Define the number of APs to store\n\nstatic const char *TAG = \"wifi_scan\";\n\nvoid wifi_scan(void *pvParameters) {\n    \/\/ 1. Initialize Wi-Fi\n    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();\n    ESP_ERROR_CHECK(esp_wifi_init(&amp;cfg));\n\n    \/\/ 2. Set Wi-Fi mode to STA (Station)\n    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));\n    ESP_ERROR_CHECK(esp_wifi_start());\n\n    \/\/ 3. Configure scan parameters\n    wifi_scan_config_t scan_config = {\n        .ssid = NULL,\n        .bssid = NULL,\n        .channel = 0,\n        .show_hidden = true\n    };\n\n    \/\/ 4. Start Wi-Fi scan\n    ESP_ERROR_CHECK(esp_wifi_scan_start(&amp;scan_config, true));\n\n    \/\/ 5. Get scan results\n    uint16_t number = DEFAULT_SCAN_LIST_SIZE;\n    wifi_ap_record_t ap_info[DEFAULT_SCAN_LIST_SIZE];\n    ESP_ERROR_CHECK(esp_wifi_scan_get_ap_records(&amp;number, ap_info));\n\n    \/\/ 6. Get number of scanned networks\n    uint16_t ap_count = 0;\n    ESP_ERROR_CHECK(esp_wifi_scan_get_ap_num(&amp;ap_count));\n    ESP_LOGI(TAG, \"Total APs found: %u\", ap_count);\n\n    \/\/ 7. Print all SSIDs and RSSI (signal strength)\n    for (int i = 0; i &lt; ap_count; i++) {\n        ESP_LOGI(TAG, \"SSID: %s, RSSI: %d\", ap_info[i].ssid, ap_info[i].rssi);\n    }\n\n    \/\/ Stop the Wi-Fi module\n    ESP_ERROR_CHECK(esp_wifi_stop());\n\n    vTaskDelete(NULL);  \/\/ Delete task\n}\n\nvoid app_main(void) {\n    \/\/ Initialize NVS\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    \/\/ Create Wi-Fi scan task\n    xTaskCreate(&amp;wifi_scan, \"wifi_scan\", 4096, NULL, 5, NULL);\n}\n<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7de8\u8b6f\u548c\u71d2\u9304\">\u7de8\u8b6f\u548c\u71d2\u9304<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\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<h2 class=\"wp-block-heading\" id=\"\u67e5\u770b\u7d50\u679c\">\u67e5\u770b\u7d50\u679c<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u5728 ESP32 \u4e0a\u57f7\u884c Wi-Fi \u6383\u63cf\u7a0b\u5f0f\u78bc\u5f8c\uff0c\u7d50\u679c\u5c07\u6703\u900f\u904e\u4e32\u53e3\u76e3\u8996\u5668\uff08\u4f8b\u5982 idf.py monitor\uff09\u5217\u5370\u51fa\u4f86\u3002\u4ee5\u4e0b\u662f\u4f60\u53ef\u80fd\u5728\u4e32\u53e3\u76e3\u8996\u5668\u4e0a\u770b\u5230\u7684\u7d50\u679c\u7bc4\u4f8b\uff1a<\/pre>\n\n\n\n<pre class=\"wp-block-code has-palette-color-4-color has-text-color has-link-color wp-elements-67d5a2b65545a7190178dce99027724d\"><code lang=\"c\" class=\"language-c\">I (2894) wifi_scan: Total APs found: 5\nI (2894) wifi_scan: SSID: MyWiFi, RSSI: -55\nI (2894) wifi_scan: SSID: CafeNetwork, RSSI: -60\nI (2894) wifi_scan: SSID: OfficeWiFi, RSSI: -45\nI (2894) wifi_scan: SSID: GuestNetwork, RSSI: -70\nI (2894) wifi_scan: SSID: HiddenSSID, RSSI: -80<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7d50\u8ad6\">\u7d50\u8ad6<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:0px\"><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-medium-font-size is-layout-flow wp-block-column-is-layout-flow\">\n<pre class=\"wp-block-preformatted\">\u900f\u904e\u4e32\u53e3\u76e3\u8996\u5668\u4f60\u5c07\u6703\u770b\u5230\u8a2d\u5099\u5217\u5370\u51fa\u5468\u570d\u7684 <a href=\"https:\/\/docs.espressif.com\/projects\/esp-idf\/en\/latest\/esp32\/api-reference\/network\/esp_wifi.html\" target=\"_blank\" rel=\"noopener\">Wi-Fi SSID<\/a> \u548c\u5c0d\u61c9\u7684\u8a0a\u865f\u5f37\u5ea6\u3002<br>\u9019\u6bb5\u7a0b\u5f0f\u78bc\u6703\u6383\u63cf\u9644\u8fd1\u7684\u6240\u6709 Wi-Fi \u7db2\u8def\uff0c\u4e26\u986f\u793a\u5b83\u5011\u7684\u540d\u7a31\u548c\u8a0a\u865f\u5f37\u5ea6\u3002<\/pre>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator alignwide has-text-color has-palette-color-1-color has-alpha-channel-opacity has-palette-color-1-background-color has-background is-style-wide\"\/>\n","protected":false},"excerpt":{"rendered":"<p>\u7c21\u4ecb \u4f7f\u7528 ESP32 IDF\uff08Espressif IoT Development Framework\uff09\u4f86\u6383\u63cf [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2568,"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-2464","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\/2464","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=2464"}],"version-history":[{"count":11,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/2464\/revisions"}],"predecessor-version":[{"id":2571,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/2464\/revisions\/2571"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media\/2568"}],"wp:attachment":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media?parent=2464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/categories?post=2464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/tags?post=2464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}