Merge pull request #3382 from Blake-Latchford/wifi-disconnect-reason-logging

Extend WiFi disconnect logging to specify reason

examples/companion_radio/main.cpp

@@ -229,7 +229,8 @@ void setup() {
 
     WiFi.onEvent([](WiFiEvent_t event, WiFiEventInfo_t info){
         if (event == ARDUINO_EVENT_WIFI_STA_DISCONNECTED) {
-            WIFI_DEBUG_PRINTLN("WiFi disconnected. Flagging for reconnect...");
+            WIFI_DEBUG_PRINTLN("WiFi disconnected (reason=%s). Flagging for reconnect...",
+              WiFi.disconnectReasonName((wifi_err_reason_t)info.wifi_sta_disconnected.reason));
             wifi_needs_reconnect = true;
         } else if (event == ARDUINO_EVENT_WIFI_STA_GOT_IP) {
             WIFI_DEBUG_PRINTLN("WiFi connected successfully!");