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--- en:iot-open:espressif_esp8266_scanner [2023/10/10 15:47] – ktokarz
+++ en:iot-open:espressif_esp8266_scanner [2023/11/23 12:46] (current) – pczekalski
@@ Line 1: / Line 1: @@
+====== ESP8266 Wifi Scanner ======
+{{:en:iot-open:czapka_b.png?50| General audience classification icon }}{{:en:iot-open:czapka_e.png?50| General audience classification icon }}\\
+This sketch demonstrates how to scan WiFi networks. ESP8266 is programmed in access point mode.
+All found WiFi networks will be printed in the serial monitor window (TTY).
+<code c >
+#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);
+}
+</code>