esp-wifiscan.ino 1.42 KB
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/*
 *  CREDITS: https://github.com/platformio/platform-espressif8266
 *
 *  This sketch demonstrates how to scan WiFi networks.
 *  The API is almost the same as with the WiFi Shield library,
 *  the most obvious difference being the different file you need to include:
 */
#include <Arduino.h>
#include "ESP8266WiFi.h"

void setup()
{
    Serial.begin(115200);

  // Set WiFi to station mode and disconnect from an AP
  // if it was previously connected
  // WiFi.mode(WIFI_STA);
  // WiFi.disconnect();
  // delay(100);
  // Serial.println("Setup done");
}

void loop()
{
    Serial.print("\nScanning wifi networks...");
    Serial.flush();

    int n = WiFi.scanNetworks();

    Serial.println(" done!\n");
    Serial.flush();
    if (n == 0)
    {
        Serial.println("no networks found");
    }
    else
    {
        Serial.print(n);
        Serial.println(" networks found:");
        Serial.println("-------------------------");
        for (int i = 0; i < n; ++i)
        {
            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) == ENC_TYPE_NONE)?" ":"*");
            delay(10);
        }
    }
    Serial.println("");
    Serial.println("Waiting 5 secs...");
    Serial.flush();
    // Wait a bit before scanning again
    delay(5000);
}