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  1. /*
  2.  *  This sketch demonstrates how to scan WiFi networks.
  3.  *  The API is almost the same as with the WiFi Shield library,
  4.  *  the most obvious difference being the different file you need to include:
  5.  */
  6. #include "WiFi.h"
  7.  
  8. void setup()
  9. {
  10.     Serial.begin(115200);
  11.  
  12.     // Set WiFi to station mode and disconnect from an AP if it was previously connected
  13.     WiFi.mode(WIFI_STA);
  14.     WiFi.disconnect();
  15.     delay(100);
  16.  
  17.     Serial.println("Setup done");
  18. }
  19.  
  20. void loop()
  21. {
  22.     Serial.println("scan start");
  23.  
  24.     // WiFi.scanNetworks will return the number of networks found
  25.     int n = WiFi.scanNetworks();
  26.     Serial.println("scan done");
  27.     if (n == 0) {
  28.         Serial.println("no networks found");
  29.     } else {
  30.         Serial.print(n);
  31.         Serial.println(" networks found");
  32.         for (int i = 0; i < n; ++i) {
  33.             // Print SSID and RSSI for each network found
  34.             Serial.print(i + 1);
  35.             Serial.print(": ");
  36.             Serial.print(WiFi.SSID(i));
  37.             Serial.print(" (");
  38.             Serial.print(WiFi.RSSI(i));
  39.             Serial.print(")");
  40.             Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*");
  41.             delay(10);
  42.         }
  43.     }
  44.     Serial.println("");
  45.  
  46.     // Wait a bit before scanning again
  47.     delay(5000);
  48. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:6:18: fatal error: WiFi.h: No such file or directory
 #include "WiFi.h"
                  ^
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/UXihTk
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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