dialogs/__init__.py
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Sun, 06 Jan 2019 01:22:46 +0300
changeset 2499 68f4f2d4516b
parent 2347 6dca42cd2b2b
child 2429 15f18dc8b56a
permissions -rw-r--r--
use pregenerated CRC32 lookup tables for retain on Win32 and GNU/Linux

This code could be possible reused on low-end targets with limited RAM.

code to generate lookup table:
[---------------------------------------------------------------------]

/* CRC lookup table and initial state. */
uint32_t crc32_table[256];

/* Generate CRC32 lookup table. */
void GenerateCRC32Table(void)
{
unsigned int i, j;
/* Use CRC-32-IEEE 802.3 polynomial 0x04C11DB7 (bit reflected). */
uint32_t poly = 0xEDB88320;

for (i = 0; i <= 0xFF; i++)
{
uint32_t c = i;
for (j = 0 ; j < 8 ; j++)
c = (c & 1) ? (c >> 1 ) ^ poly : (c >> 1);
crc32_table[i] = c;
}
}

void main(void)
{
GenerateCRC32Table();
int j=0;
for(int i=0; i<256; i++) {
printf("0x%08X, ", crc32_table[i]);
if (++j >= 8) {
j = 0;
printf("\n");
}
}
}
[---------------------------------------------------------------------]
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of Beremiz, a Integrated Development Environment for
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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
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#
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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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# See COPYING file for copyrights details.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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# Package initialization
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from __future__ import absolute_import
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from dialogs.CommentEditDialog import CommentEditDialog
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from dialogs.ConnectionDialog import ConnectionDialog
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from dialogs.ActionBlockDialog import ActionBlockDialog
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from dialogs.FBDBlockDialog import FBDBlockDialog
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from dialogs.FBDVariableDialog import FBDVariableDialog
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from dialogs.LDElementDialog import LDElementDialog
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from dialogs.LDPowerRailDialog import LDPowerRailDialog
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from dialogs.SFCStepDialog import SFCStepDialog
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from dialogs.SFCStepNameDialog import SFCStepNameDialog
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from dialogs.SFCTransitionDialog import SFCTransitionDialog
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from dialogs.SFCDivergenceDialog import SFCDivergenceDialog
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from dialogs.ForceVariableDialog import ForceVariableDialog
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from dialogs.ArrayTypeDialog import ArrayTypeDialog
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from dialogs.DurationEditorDialog import DurationEditorDialog
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from dialogs.SearchInProjectDialog import SearchInProjectDialog
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from dialogs.BrowseLocationsDialog import BrowseLocationsDialog
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from dialogs.ProjectDialog import ProjectDialog
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from dialogs.PouDialog import PouDialog
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from dialogs.PouTransitionDialog import PouTransitionDialog
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from dialogs.PouActionDialog import PouActionDialog
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from dialogs.FindInPouDialog import FindInPouDialog
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from dialogs.BrowseValuesLibraryDialog import BrowseValuesLibraryDialog
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from dialogs.DiscoveryDialog import DiscoveryDialog