docs: def __isOpenThreadWpanRunning(self):
          """check whether or not OpenThreadWpan is running
  
          Returns:
              True: OpenThreadWpan is running
              False: OpenThreadWpan is not running
          """
          print 'call __isOpenThreadWpanRunning'
          if self.__stripValue(self.__sendCommand(WPANCTL_CMD + 'getprop -v NCP:State')[0]) == 'associated':
              print '*****OpenThreadWpan is running'
              return True
          else:
              print '*****Wrong OpenThreadWpan state'
              return False