Avoid race condition upon gui start with autoconnect

Change-Id: I9f886dd858d50584403da5adf0c995e73fe67267
Reviewed-on: https://forge.frm2.tum.de/review/17277
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Tested-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>

secop/gui/nodectrl.py

@@ -23,6 +23,7 @@
 
 import pprint
 import json
+from time import sleep
 
 from PyQt4.QtGui import QWidget, QTextCursor, QFont, QFontMetrics, QLabel, QMessageBox
 from PyQt4.QtCore import pyqtSignature as qtsig, Qt
@@ -176,6 +177,12 @@ class ReadableWidget(QWidget):
         self._node = node
         self._module = module
 
+        # XXX: avoid a nasty race condition, mainly biting on M$
+        for i in range(30):
+            if 'status' in self._node.describing_data['modules'][module]['parameters']:
+                break
+            sleep(0.01*i)
+
         self._status_type = self._node.getProperties(
             self._module, 'status').get('datatype')