Yet another ESP32AutoConnect

The ESP32AutoConnect library shows how the complexity of establishing a connection without hard-coded credentials can be encapsulated in a class. The method is well known, but its implementation is often difficult to understand and overloaded with many but rarely used features. This was the motivation to implement a simple ESP32AutoConnect class myself, which actually only had to do the following for my needs::

void ESP32AutoConnect::autoConnect()
{
    bool notConnected = true;

    if (credentialsAreAvailable())
    {
        if (weAreConnectedToWLAN(_ssid, _password))
        {
            notConnected = false; // ==> proceed with main loop
        }
        else
        {
        requestCredentialsAndRestart();
        }
    }
    else
    {
        requestCredentialsAndRestart();
    } 
    while (notConnected) { delay(100); } // wait for connection 
}

The use in setup() is even simpler:

Preferences prefs; // holds the WiFi credentials
AsyncWebServer server(80);

void setup() 
{
    Serial.begin(115200);

    ESP32AutoConnect ac(server, prefs); 
    ac.setESPhostname(HOSTNAME);
    ac.autoConnect(); // start the autoconnect process and wait for connection

    handleWebUi(); // handle the main web page
    server.onNotFound(notFound);
    server.begin();
}

The commented source code makes it even easier to understand.

User Interface

Connected to AutoConnectAP and http://192.168.4.1	Networks available to choose from

Connection confirmation	Application web page

Credits

Many thanks to Stéphane Calderoni, from whom I learned how to realize such appealing user interfaces.