WIFI02_找出可用的SSID_ESP32 NodeMCU 32S

WIFI02_找出可用的SSID_ESP32 NodeMCU 32S

#include "WiFi.h"

void setup()
{
    Serial.begin(9600);
    WiFi.mode(WIFI_STA);
    WiFi.disconnect();
    delay(100);
    Serial.println("Setup done");
}

void loop()
{
    Serial.println("scan start");
    int n = WiFi.scanNetworks(); //可用的SSID數量
    Serial.println("scan done");
    if (n == 0) {
        Serial.println("no networks found");
    } else {
        Serial.print(n);
        Serial.println(" networks found");
        for (int i = 0; i < n; ++i) {
            // Print SSID and RSSI for each network found
            Serial.print(i + 1);
            Serial.print(": ");
            Serial.print(WiFi.SSID(i));
            Serial.print(" (");
            Serial.print(WiFi.RSSI(i));//訊號強度
            Serial.print(")");
            Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*"); //是否有密碼
            delay(10);
        }
    }
    Serial.println("");
    delay(5000);
}