Wifi in station mode sometimes enters loops of repeatedly joining...

[geeksville]

seen about 50% of boots:

************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville
Started Joining WIFI
************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville
Started Joining WIFI
************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville
Started Joining WIFI
************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville
Started Joining WIFI
************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville
Started Joining WIFI
************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville
Started Joining WIFI
************ [WiFi-event] event: 5 ************
Disconnected from WiFi access point
JOINING WIFI: ssid=geeksville

I'll bet it has to do with both BLE and wifi being connected at once and the final fix will be to "if configured for wifi, do not start BLE"

cc @mc-hamster

[mc-hamster]

Few possibilities for this:

1. Wifi ssid / password combination was entered wrong
2. Device is just outside the range of the AP and is having trouble maintaining an established connection.

[mc-hamster]

I've been able to reproduce this but for maybe only 10% of reboots.

I think there's a race condition somewhere.

[mc-hamster]

Fixed it.

If it fails to associate the first time, it immediate calls the disconnect event and tries to reinit the wifi stack. Within the initwifi, I was attaching the the event handler.

WiFi.onEvent(WiFiEvent);

It's ok for that to be called multiple times, but not always. Very odd.

I refactored the initwifi function to create reconnectWiFi() for that situation.

[mc-hamster]

Also added a RSSI display on the screen which helped me debug this.

[mc-hamster]

Fixed. Checked into dev-wifi