WiFi.listen() issues

debug.ino

STARTUP(WiFi.selectAntenna(ANT_EXTERNAL));

// we will handle wifi manually
SYSTEM_MODE(SEMI_AUTOMATIC);

void setup() {

    Serial.begin(9600);   // open serial over USB
    delay(3000);

    Serial.println("connecting to wifi");
    WiFi.connect();

    if(!WiFi.ready()){
      Serial.println("no wifi, going into listen mode");
      WiFi.listen();
      // only listen for a while
      unsigned int stopTryingToListen = millis() + 180000;
      while(millis() < stopTryingToListen){
        // waiting for some credentials

      }
      // did not get any new creds reset the device
      Serial.println("did not get any new creds, reset the device");
      System.reset();
    } else {
      Serial.println("wifi is ready to go");
    }

    Spark.connect();
}

void loop() {
  
}

Hi there! Looking over this script I'm unsure how this could ever have worked. Here's some things that I see:

• WiFi.connect, followed by WiFi.ready() - this will work on the Photon but not in general since WiFi.connect() is potentially an asynchronous operation. (So this doesn't cause a problem here, but raises a red flag in my mind!)
• WiFI.listen() is always an asynchronous call. The listening doesn't happen until the background loop is executed. So your loop will just wait the given timeout then exit. I can promise you it's always been like this!

There is a bug in 0.4.4 that the first call to connect fails. So as a workaround try duplicating WiFi.connect();