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/* * Based on the following examples: * WiFi > WiFiMulti: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiMulti/WiFiMulti.ino * WiFi > WiFiScan: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiScan/WiFiScan.ino * Complete project details at our blog: https://RandomNerdTutorials.com/ * */ #include #include WiFiMulti wifiMulti; // WiFi connect timeout per AP. Increase when connecting takes longer. const uint32_t connectTimeoutMs = 10000; void setup(){ Serial.begin(115200); delay(10); WiFi.mode(WIFI_STA); // Add list of wifi networks wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1"); wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2"); wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3"); // 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) == WIFI_AUTH_OPEN)?" ":"*"); delay(10); } } // Connect to Wi-Fi using wifiMulti (connects to the SSID with strongest connection) Serial.println("Connecting Wifi..."); if(wifiMulti.run() == WL_CONNECTED) { Serial.println(""); Serial.println("WiFi connected"); Serial.println("IP address: "); Serial.println(WiFi.localIP()); } } void loop(){ //if the connection to the stongest hotstop is lost, it will connect to the next network on the list if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) { Serial.print("WiFi connected: "); Serial.print(WiFi.SSID()); Serial.print(" "); Serial.println(WiFi.RSSI()); } else { Serial.println("WiFi not connected!"); } delay(1000); }
/* * Based on the following examples: * WiFi > WiFiMulti: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiMulti/WiFiMulti.ino * WiFi > WiFiScan: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/examples/WiFiScan/WiFiScan.ino * Complete project details at our blog: https://RandomNerdTutorials.com/ * */ #include #include WiFiMulti wifiMulti; // WiFi connect timeout per AP. Increase when connecting takes longer. const uint32_t connectTimeoutMs = 10000; void setup(){ Serial.begin(115200); delay(10); WiFi.mode(WIFI_STA); // Add list of wifi networks wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1"); wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2"); wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3"); // 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) == WIFI_AUTH_OPEN)?" ":"*"); delay(10); } } // Connect to Wi-Fi using wifiMulti (connects to the SSID with strongest connection) Serial.println("Connecting Wifi..."); if(wifiMulti.run() == WL_CONNECTED) { Serial.println(""); Serial.println("WiFi connected"); Serial.println("IP address: "); Serial.println(WiFi.localIP()); } } void loop(){ //if the connection to the stongest hotstop is lost, it will connect to the next network on the list if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) { Serial.print("WiFi connected: "); Serial.print(WiFi.SSID()); Serial.print(" "); Serial.println(WiFi.RSSI()); } else { Serial.println("WiFi not connected!"); } delay(1000); }