/* ESP32 WiFi Scanning example */
// sandi reza febrian
#include "WiFi.h"
int led = 33;
int pushButton = 13;

void setup() {
  Serial.begin(115200);
  Serial.println("Initializing WiFi...");
  WiFi.mode(WIFI_STA);
  Serial.println("Setup done!");
  pinMode(led, OUTPUT);
  pinMode(pushButton, INPUT);
}

void loop() {

  if(digitalRead(pushButton) == HIGH) {

    Serial.println("Scanning...");

    // WiFi.scanNetworks will return the number of networks found
    int n = WiFi.scanNetworks();
    Serial.println("Scan done!");
    if (n == 0) {
      digitalWrite(led, LOW);
      Serial.println("No networks found.");
    } else {
      digitalWrite(led, HIGH);
      Serial.println();
      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));
        Serial.print(")");
        Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN) ? " " : "*");
        delay(10);
      }
    }
    Serial.println("");

    // Wait a bit before scanning again
    delay(5000);

  }else{
    digitalWrite(led, LOW);
  }
}