47 lines
1.2 KiB
Arduino
47 lines
1.2 KiB
Arduino
|
/*
|
||
|
|
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);
|
||
|
|
}
|