Example Code for ESP8266-Scan WiFi

Hardware Preparation

• FireBeetle ESP8266 IOT Microcontroller (SKU: DFR0489) ×1
• Micro USB Cable ×1

Software Preparation

• Download Arduino IDE: Click to download Arduino IDE.
• CH340 FireBeetle ESP8266 Window Driver, Download Link: Download CH340 FireBeetle ESP8266 Window Driver

Software Preparation

• Download Arduino IDE: Click to download Arduino IDE.
• CH340 FireBeetle ESP8266 Window Driver, Download Link: Download CH340 FireBeetle ESP8266 Window Driver

Other Preparation Work

Setup Arduino IDE Development Environment

1. Plug FireBeetle to your computer, install the driver manually.

2. Add FireBeetle Board URL to Arduino IDE: Open Arduino IDE, File->Preferences, find Additional Boards Manager URLs, copy the below link, and paste in the blank.

   • For domestic users: https://downloadcd.dfrobot.com.cn/boards/package_DFRobot_index.json

   • For overseas users: https://raw.githubusercontent.com/DFRobot/FireBeetle-ESP8266/master/package_firebeetle8266_index.json

     

3. Paste URL here.
   

4. Click OK.

5. Open Tools->Board->Boards Manager, waiting automatic update. You'll find FireBeetle-ESP8266.

   

6. Now, the development environment has been installed, you can use it like a normal Arduino board.

   

7. After you have installed the FireBeetle ESP8266 development environment, it will comes with a lot of sample code in Arduino IDE, you can find them in File > Examples.

Sample Code

The follow sample code scans the around WiFi:

/*
 *  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 "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.println("scan start");

  // WiFi.scanNetworks will return the number of networks found
  int n = WiFi.scanNetworks();
  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));
      Serial.print(")");
      Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE)?" ":"*");
      delay(10);
    }
  }
  Serial.println("");

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

Result

Open your Arduino IDE serial monitor: