#include <Arduino.h>
#include "WiFi.h"

void setup(){
    Serial.begin(9600);
    WiFi.mode(WIFI_STA);
    WiFi.disconnect();
    Serial.println("Setup done");
    delay(2000); 
}

void loop(){
    Serial.println("Bat dau tim kiem Wifi");
    int n = WiFi.scanNetworks();
    if (n == 0) {
        Serial.println("Khong tim thay WiFi");
    } else {
        Serial.println("Found: " + String(n) + " WiFi");
        for (int i = 0; i < n; i++) {
            Serial.println(String(i + 1) + " : " + WiFi.SSID(i) + " (" + String(WiFi.RSSI(i)) + ")");
        }
    }
    delay(5000); 
}