Make Modbus mutexes non blocking for PLC. If data related to some modbus request is alredy locked when PLC wants to access it, then data isn't copied to/from PLC
#!/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.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
# Copyright (C) 2017: Andrey Skvortsov <andrej.skvortzov@gmail.com>
#
# See COPYING file for copyrights details.
#
# This program 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
# of the License, or (at your option) any later version.
#
# This program 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 program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
from __future__ import absolute_import
import wx
from plcopen.plcopen import *
from util.TranslationCatalogs import NoTranslate
# -------------------------------------------------------------------------------
# Search In Project Dialog
# -------------------------------------------------------------------------------
def GetElementsChoices():
_ = NoTranslate
return [("datatype", _("Data Type")),
("function", _("Function")),
("functionBlock", _("Function Block")),
("program", _("Program")),
("configuration", _("Configuration"))]
class SearchInProjectDialog(wx.Dialog):
def __init__(self, parent):
wx.Dialog.__init__(self, parent, title=_('Search in Project'))
main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=3, vgap=10)
main_sizer.AddGrowableCol(0)
main_sizer.AddGrowableRow(1)
pattern_sizer = wx.FlexGridSizer(cols=2, hgap=5, rows=2, vgap=5)
pattern_sizer.AddGrowableCol(0)
main_sizer.AddSizer(pattern_sizer, border=20,
flag=wx.GROW | wx.TOP | wx.LEFT | wx.RIGHT)
pattern_label = wx.StaticText(self, label=_('Pattern to search:'))
pattern_sizer.AddWindow(pattern_label, flag=wx.ALIGN_BOTTOM)
self.CaseSensitive = wx.CheckBox(self, label=_('Case sensitive'))
pattern_sizer.AddWindow(self.CaseSensitive, flag=wx.GROW)
self.Pattern = wx.TextCtrl(self, size=wx.Size(250, -1))
self.Bind(wx.EVT_TEXT, self.FindPatternChanged, self.Pattern)
pattern_sizer.AddWindow(self.Pattern, flag=wx.GROW)
self.Bind(wx.EVT_CHAR_HOOK, self.OnEscapeKey)
self.RegularExpression = wx.CheckBox(self, label=_('Regular expression'))
pattern_sizer.AddWindow(self.RegularExpression, flag=wx.GROW)
scope_staticbox = wx.StaticBox(self, label=_('Scope'))
scope_sizer = wx.StaticBoxSizer(scope_staticbox, wx.HORIZONTAL)
main_sizer.AddSizer(scope_sizer, border=20,
flag=wx.GROW | wx.LEFT | wx.RIGHT)
scope_selection_sizer = wx.BoxSizer(wx.VERTICAL)
scope_sizer.AddSizer(scope_selection_sizer, 1, border=5,
flag=wx.GROW | wx.TOP | wx.LEFT | wx.BOTTOM)
self.WholeProject = wx.RadioButton(self, label=_('Whole Project'), style=wx.RB_GROUP)
self.WholeProject.SetValue(True)
self.Bind(wx.EVT_RADIOBUTTON, self.OnScopeChanged, self.WholeProject)
scope_selection_sizer.AddWindow(self.WholeProject, border=5,
flag=wx.GROW | wx.BOTTOM)
self.OnlyElements = wx.RadioButton(self, label=_('Only Elements'))
self.Bind(wx.EVT_RADIOBUTTON, self.OnScopeChanged, self.OnlyElements)
self.OnlyElements.SetValue(False)
scope_selection_sizer.AddWindow(self.OnlyElements, flag=wx.GROW)
self.ElementsList = wx.CheckListBox(self)
self.ElementsList.Enable(False)
scope_sizer.AddWindow(self.ElementsList, 1, border=5,
flag=wx.GROW | wx.TOP | wx.RIGHT | wx.BOTTOM)
buttons_sizer = wx.BoxSizer(wx.HORIZONTAL)
main_sizer.AddSizer(buttons_sizer, border=20,
flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.ALIGN_RIGHT)
self.FindButton = wx.Button(self, label=_("Find"))
self.FindButton.SetDefault()
self.Bind(wx.EVT_BUTTON, self.OnFindButton, self.FindButton)
buttons_sizer.AddWindow(self.FindButton, border=5, flag=wx.RIGHT)
self.CloseButton = wx.Button(self, label=_("Close"))
self.Bind(wx.EVT_BUTTON, self.OnCloseButton, self.CloseButton)
buttons_sizer.AddWindow(self.CloseButton)
self.SetSizer(main_sizer)
for _name, label in GetElementsChoices():
self.ElementsList.Append(_(label))
self.Fit()
self.infosPrev = {}
self.criteria = {}
self.Pattern.SetFocus()
self.RefreshButtonsState()
def RefreshButtonsState(self):
find_pattern = self.Pattern.GetValue()
self.FindButton.Enable(find_pattern != "")
def GetCriteria(self):
return self.criteria
def FindPatternChanged(self, event):
self.RefreshButtonsState()
event.Skip()
def OnScopeChanged(self, event):
self.ElementsList.Enable(self.OnlyElements.GetValue())
event.Skip()
def OnCloseButton(self, event):
self.EndModal(wx.ID_CANCEL)
def OnEscapeKey(self, event):
keycode = event.GetKeyCode()
if keycode == wx.WXK_ESCAPE:
self.OnCloseButton(event)
else:
event.Skip()
def OnFindButton(self, event):
message = None
infos = {
"find_pattern": self.Pattern.GetValue(),
"case_sensitive": self.CaseSensitive.GetValue(),
"regular_expression": self.RegularExpression.GetValue(),
}
if self.WholeProject.GetValue():
infos["filter"] = "all"
elif self.OnlyElements.GetValue():
infos["filter"] = []
for index, (name, _label) in enumerate(GetElementsChoices()):
if self.ElementsList.IsChecked(index):
infos["filter"].append(name)
if self.infosPrev != infos:
try:
self.criteria = infos
CompilePattern(self.criteria)
self.infosPrev = infos
except Exception:
self.criteria.clear()
message = _("Syntax error in regular expression of pattern to search!")
if message is not None:
dialog = wx.MessageDialog(self, message, _("Error"), wx.OK | wx.ICON_ERROR)
dialog.ShowModal()
dialog.Destroy()
else:
self.EndModal(wx.ID_OK)