Fix #550 Fix #487: print EV_JOIN_TXCOMPLETE et al

Author: terrillmoore

examples/ttn-otaa/ttn-otaa.ino

@@ -192,6 +192,16 @@ void onEvent (ev_t ev) {
         case EV_TXSTART:
             Serial.println(F("EV_TXSTART"));
             break;
+        case EV_TXCANCELED:
+            Serial.println(F("EV_TXCANCELED"));
+            break;
+        case EV_RXSTART:
+            /* do not print anything -- it wrecks timing */
+            break;
+        case EV_JOIN_TXCOMPLETE:
+            Serial.println(F("EV_JOIN_TXCOMPLETE: no JoinAccept"));
+            break;
+
         default:
             Serial.print(F("Unknown event: "));
             Serial.println((unsigned) ev);