clean PLC log only if there is something to clean

Otherwise exception happens in Beremiz service.

Traceback (most recent call last):
File "/home/developer/WorkData/PLC/beremiz/beremiz/connectors/PYRO/_init_.py", line 113, in catcher_func
return func(*args, **kwargs)
File "/home/developer/WorkData/PLC/beremiz/beremiz/connectors/PYRO/_init_.py", line 194, in my_local_func
return RemotePLCObjectProxy._getattr_(attrName)(*args, **kwargs)
File "/usr/lib/python2.7/dist-packages/Pyro/core.py", line 381, in _call_
return self._send(self._name, args, kwargs)
File "/usr/lib/python2.7/dist-packages/Pyro/core.py", line 456, in _invokePYRO
return self.adapter.remoteInvocation(name, Pyro.constants.RIF_VarargsAndKeywords, vargs, kargs)
File "/usr/lib/python2.7/dist-packages/Pyro/protocol.py", line 457, in remoteInvocation
return self._remoteInvocation(method, flags, *args)
File "/usr/lib/python2.7/dist-packages/Pyro/protocol.py", line 532, in _remoteInvocation
answer.raiseEx()
File "/usr/lib/python2.7/dist-packages/Pyro/errors.py", line 72, in raiseEx
raise self.excObj
AttributeError: 'PLCObject' object has no attribute '_ResetLogCount'
+--- This exception occured remotely (Pyro) - Remote traceback:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/Pyro/protocol.py", line 719, in _handleInvocation2
res = obj.Pyro_dyncall(req[1],flags,req[3]) # (method,flags,args)
File "/usr/lib/python2.7/dist-packages/Pyro/core.py", line 108, in Pyro_dyncall
return getattr(self.delegate or self,method) (args,*keywords)
File "/home/developer/WorkData/PLC/beremiz/beremiz/runtime/PLCObject.py", line 101, in ResetLogCount
if self._ResetLogCount is not None:
AttributeError: 'PLCObject' object has no attribute '_ResetLogCount'
+--- End of remote traceback

     1

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

     2

<PyFile>

     3

  <variables/>

     4

  <globals>

     5

<![CDATA[

     6

from threading import Thread

     7

     8

def OnConnectButton(self, event):

     9

  def OnWiiConnected(mac_addr):

    10

    self.label_2.SetLabel(

    11

      "Wiimote %s connected"%mac_addr 

    12

      if mac_addr else 

    13

      "Wiimote connection failed !")

    14

    15

  def WiiConnected(mac_addr):

    16

    wx.CallAfter(OnWiiConnected,mac_addr)

    17

    18

  Thread(target = Connect_Wiimote, args = (WiiConnected,)).start()

    19

  self.label_2.SetLabel("Press wiimote 1+2")

    20

  event.Skip()

    21

    22

def OnDisconnectButton(self, event):

    23

  Disconnect_Wiimote()

    24

  self.label_2.SetLabel("Wiimote disconnected")

    25

  event.Skip()

    26

    27

]]>

    28

  </globals>

    29

  <init>

    30

<![CDATA[

    31

]]>

    32

  </init>

    33

  <cleanup>

    34

<![CDATA[

    35

]]>

    36

  </cleanup>

    37

  <start>

    38

<![CDATA[

    39

]]>

    40

  </start>

    41

  <stop>

    42

<![CDATA[

    43

]]>

    44

  </stop>

    45

</PyFile>