wifi: minor changes in scan example
*/
/*
- This example shows how to use the All Channel Scan or Fast Scan to connect
- to a Wi-Fi network.
-
- In the Fast Scan mode, the scan will stop as soon as the first network matching
- the SSID is found. In this mode, an application can set threshold for the
- authentication mode and the Signal strength. Networks that do not meet the
- threshold requirements will be ignored.
-
- In the All Channel Scan mode, the scan will end only after all the channels
- are scanned, and connection will start with the best network. The networks
- can be sorted based on Authentication Mode or Signal Strength. The priority
- for the Authentication mode is: WPA2 > WPA > WEP > Open
+ This example shows how to scan for available set of APs.
*/
#include <string.h>
#include "freertos/FreeRTOS.h"
@@ -124,14 +113,16 @@ static void wifi_scan(void)
uint16_t number = DEFAULT_SCAN_LIST_SIZE;
wifi_ap_record_t ap_info[DEFAULT_SCAN_LIST_SIZE];
+ uint16_t ap_count = 0;
memset(ap_info, 0, sizeof(ap_info));
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
ESP_ERROR_CHECK(esp_wifi_start());
ESP_ERROR_CHECK(esp_wifi_scan_start(NULL, true));
ESP_ERROR_CHECK(esp_wifi_scan_get_ap_records(&number, ap_info));
-
- for (int i = 0; i < DEFAULT_SCAN_LIST_SIZE; i++) {
+ ESP_ERROR_CHECK(esp_wifi_scan_get_ap_num(&ap_count));
+ ESP_LOGI(TAG, "Total APs scanned = %u", ap_count);
+ for (int i = 0; (i < DEFAULT_SCAN_LIST_SIZE) && (i < ap_count); i++) {
ESP_LOGI(TAG, "SSID \t\t%s", ap_info[i].ssid);
ESP_LOGI(TAG, "RSSI \t\t%d", ap_info[i].rssi);
print_auth_mode(ap_info[i].authmode);
