HGKeeper

LPCCommand : switch to wx.Timer instead of regular python timer for the rapidfire protection. With regular python timers, some refresh order could pile eventloop when interacting with the GUI while doing initial loading of signals.

2019-02-20, Edouard Tisserant

62e8bfd13812

Executable

#!/usr/bin/env python

# -*- coding: utf-8 -*-

#This file is part of Beremiz, a Integrated Development Environment for

#programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

#See COPYING file for copyrights details.

#This library is free software; you can redistribute it and/or

#modify it under the terms of the GNU General Public

#License as published by the Free Software Foundation; either

#version 2.1 of the License, or (at your option) any later version.

#This library is distributed in the hope that it will be useful,

#but WITHOUT ANY WARRANTY; without even the implied warranty of

#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

#General Public License for more details.

#You should have received a copy of the GNU General Public

#License along with this library; if not, write to the Free Software

#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

from LPCProto import *

class LPCObject():

def __init__(self, confnodesroot, comportstr):

self.TransactionLock = Lock()

self.PLCStatus = "Disconnected"

self.confnodesroot = confnodesroot

self.PLCprint = confnodesroot.logger.writeyield

self._Idxs = []

try:

self.connect(comportstr)

except Exception,e:

self.confnodesroot.logger.write_error(str(e)+"\n")

self.SerialConnection = None

self.PLCStatus = "Disconnected"

def HandleSerialTransaction(self, transaction):

res = None

disconnected=False

failure=None

self.TransactionLock.acquire()

if self.SerialConnection is not None:

try:

self.PLCStatus, res = \

self.SerialConnection.HandleTransaction(transaction)

except LPCProtoError,e:

disconnected=True

if self.SerialConnection is not None:

self.SerialConnection.close()

self.SerialConnection = None

self.PLCStatus = "Disconnected"

except Exception,e:

failure = str(e)

self.TransactionLock.release()

if disconnected:

self.confnodesroot.logger.write(_("PLC disconnected\n"))

if failure is not None:

self.confnodesroot.logger.write_warning(failure+"\n")

return res

def StartPLC(self, debug=False):