kopia lustrzana https://github.com/espressif/esp-idf
214 wiersze
6.8 KiB
C
214 wiersze
6.8 KiB
C
/* Scan Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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/*
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This example shows how to scan for available set of APs.
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*/
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/event_groups.h"
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#include "esp_wifi.h"
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#include "esp_log.h"
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#include "esp_event.h"
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#include "nvs_flash.h"
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#include "regex.h"
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#define DEFAULT_SCAN_LIST_SIZE CONFIG_EXAMPLE_SCAN_LIST_SIZE
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#ifdef CONFIG_EXAMPLE_USE_SCAN_CHANNEL_BITMAP
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#define USE_CHANNEL_BTIMAP 1
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#define CHANNEL_LIST_SIZE 3
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static uint8_t channel_list[CHANNEL_LIST_SIZE] = {1, 6, 11};
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#endif /*CONFIG_EXAMPLE_USE_SCAN_CHANNEL_BITMAP*/
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static const char *TAG = "scan";
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static void print_auth_mode(int authmode)
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{
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switch (authmode) {
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case WIFI_AUTH_OPEN:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_OPEN");
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break;
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case WIFI_AUTH_OWE:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_OWE");
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break;
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case WIFI_AUTH_WEP:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WEP");
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break;
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case WIFI_AUTH_WPA_PSK:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WPA_PSK");
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break;
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case WIFI_AUTH_WPA2_PSK:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WPA2_PSK");
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break;
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case WIFI_AUTH_WPA_WPA2_PSK:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WPA_WPA2_PSK");
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break;
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case WIFI_AUTH_ENTERPRISE:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_ENTERPRISE");
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break;
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case WIFI_AUTH_WPA3_PSK:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WPA3_PSK");
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break;
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case WIFI_AUTH_WPA2_WPA3_PSK:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WPA2_WPA3_PSK");
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break;
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case WIFI_AUTH_WPA3_ENT_192:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_WPA3_ENT_192");
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break;
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default:
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ESP_LOGI(TAG, "Authmode \tWIFI_AUTH_UNKNOWN");
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break;
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}
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}
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static void print_cipher_type(int pairwise_cipher, int group_cipher)
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{
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switch (pairwise_cipher) {
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case WIFI_CIPHER_TYPE_NONE:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_NONE");
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break;
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case WIFI_CIPHER_TYPE_WEP40:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_WEP40");
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break;
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case WIFI_CIPHER_TYPE_WEP104:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_WEP104");
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break;
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case WIFI_CIPHER_TYPE_TKIP:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_TKIP");
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break;
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case WIFI_CIPHER_TYPE_CCMP:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_CCMP");
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break;
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case WIFI_CIPHER_TYPE_TKIP_CCMP:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_TKIP_CCMP");
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break;
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case WIFI_CIPHER_TYPE_AES_CMAC128:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_AES_CMAC128");
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break;
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case WIFI_CIPHER_TYPE_SMS4:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_SMS4");
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break;
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case WIFI_CIPHER_TYPE_GCMP:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_GCMP");
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break;
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case WIFI_CIPHER_TYPE_GCMP256:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_GCMP256");
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break;
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default:
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ESP_LOGI(TAG, "Pairwise Cipher \tWIFI_CIPHER_TYPE_UNKNOWN");
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break;
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}
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switch (group_cipher) {
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case WIFI_CIPHER_TYPE_NONE:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_NONE");
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break;
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case WIFI_CIPHER_TYPE_WEP40:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_WEP40");
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break;
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case WIFI_CIPHER_TYPE_WEP104:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_WEP104");
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break;
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case WIFI_CIPHER_TYPE_TKIP:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_TKIP");
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break;
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case WIFI_CIPHER_TYPE_CCMP:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_CCMP");
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break;
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case WIFI_CIPHER_TYPE_TKIP_CCMP:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_TKIP_CCMP");
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break;
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case WIFI_CIPHER_TYPE_SMS4:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_SMS4");
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break;
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case WIFI_CIPHER_TYPE_GCMP:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_GCMP");
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break;
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case WIFI_CIPHER_TYPE_GCMP256:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_GCMP256");
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break;
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default:
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ESP_LOGI(TAG, "Group Cipher \tWIFI_CIPHER_TYPE_UNKNOWN");
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break;
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}
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}
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#ifdef USE_CHANNEL_BTIMAP
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static void array_2_channel_bitmap(const uint8_t channel_list[], const uint8_t channel_list_size, wifi_scan_config_t *scan_config) {
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for(uint8_t i = 0; i < channel_list_size; i++) {
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uint8_t channel = channel_list[i];
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scan_config->channel_bitmap.ghz_2_channels |= (1 << channel);
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}
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}
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#endif /*USE_CHANNEL_BTIMAP*/
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/* Initialize Wi-Fi as sta and set scan method */
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static void wifi_scan(void)
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{
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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esp_netif_t *sta_netif = esp_netif_create_default_wifi_sta();
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assert(sta_netif);
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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uint16_t number = DEFAULT_SCAN_LIST_SIZE;
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wifi_ap_record_t ap_info[DEFAULT_SCAN_LIST_SIZE];
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uint16_t ap_count = 0;
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memset(ap_info, 0, sizeof(ap_info));
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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ESP_ERROR_CHECK(esp_wifi_start());
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#ifdef USE_CHANNEL_BTIMAP
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wifi_scan_config_t *scan_config = (wifi_scan_config_t *)calloc(1,sizeof(wifi_scan_config_t));
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if (!scan_config) {
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ESP_LOGE(TAG, "Memory Allocation for scan config failed!");
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return;
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}
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array_2_channel_bitmap(channel_list, CHANNEL_LIST_SIZE, scan_config);
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esp_wifi_scan_start(scan_config, true);
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#else
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esp_wifi_scan_start(NULL, true);
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#endif /*USE_CHANNEL_BTIMAP*/
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ESP_LOGI(TAG, "Max AP number ap_info can hold = %u", number);
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ESP_ERROR_CHECK(esp_wifi_scan_get_ap_records(&number, ap_info));
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ESP_ERROR_CHECK(esp_wifi_scan_get_ap_num(&ap_count));
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ESP_LOGI(TAG, "Total APs scanned = %u, actual AP number ap_info holds = %u", ap_count, number);
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for (int i = 0; i < number; i++) {
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ESP_LOGI(TAG, "SSID \t\t%s", ap_info[i].ssid);
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ESP_LOGI(TAG, "RSSI \t\t%d", ap_info[i].rssi);
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print_auth_mode(ap_info[i].authmode);
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if (ap_info[i].authmode != WIFI_AUTH_WEP) {
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print_cipher_type(ap_info[i].pairwise_cipher, ap_info[i].group_cipher);
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}
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ESP_LOGI(TAG, "Channel \t\t%d", ap_info[i].primary);
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}
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}
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void app_main(void)
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{
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// Initialize NVS
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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ret = nvs_flash_init();
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}
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ESP_ERROR_CHECK( ret );
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wifi_scan();
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}
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