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# -*- coding: utf-8 -*-
#
# AWL simulator - IEC library - FC 12 "GE_DT"
#
# Copyright 2015 Christian Vitte <vitte.chris@gmail.com>
# Copyright 2015 Michael Buesch <m@bues.ch>
#
# 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 division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.library.libentry import *
class Lib__IEC__FC12_GE_DT(AwlLibFC):
libraryName = "IEC"
staticIndex = 12
symbolName = "GE_DT"
description = "Greater or equal DATE_AND_TIME"
interfaceFields = {
BlockInterfaceField.FTYPE_IN : (
BlockInterfaceField(name="DT1", dataType="DATE_AND_TIME"),
BlockInterfaceField(name="DT2", dataType="DATE_AND_TIME"),
),
BlockInterfaceField.FTYPE_OUT : (
BlockInterfaceField(name="RET_VAL", dataType="BOOL"),
),
BlockInterfaceField.FTYPE_TEMP : (
BlockInterfaceField(name="YEAR1", dataType="WORD"),
BlockInterfaceField(name="YEAR2", dataType="WORD"),
BlockInterfaceField(name="AR1_SAVE", dataType="DWORD"),
),
}
awlCodeCopyright = "Copyright (c) 2015 Christian Vitte <vitte.chris@gmail.com>\n"\
"Copyright (c) 2015 Michael Buesch <m@bues.ch>"
awlCodeLicense = "BSD-2-clause"
awlCodeIsStandard = True
awlCodeVersion = "0.1"
awlCode = """
TAR1 #AR1_SAVE // Save AR1 register
// Load a pointer to #DT1 into AR1 and open the DB
L P##DT1
LAR1
L W [AR1, P#0.0]
T #YEAR1 // DB number (abuse #YEAR1 temp field)
AUF DB [#YEAR1]
L D [AR1, P#2.0]
LAR1
// Load a pointer to #DT2 into AR2 and open the DB as DI
L P##DT2
LAR2
L W [AR2, P#0.0]
T #YEAR1 // DB number (abuse #YEAR1 temp field)
AUF DI [#YEAR1]
L D [AR2, P#2.0]
// If #DT2 points to DB (area 84) change it to DI (area 85).
// This also works, if #DT2 points to VL (area 87).
// Other areas are not possible.
OD DW#16#85000000
LAR2
//------------------------------------------------------
// Extract years from DT1 and DT2
L B [AR1, P#0.0]
T #YEAR1
L B [AR2, P#0.0]
T #YEAR2
// Check whether the year values from DT1 and DT2
// are valid BCD numbers.
L #YEAR1
UW W#16#000F
L W#16#0009
>I
SPB FAIL
L #YEAR1
UW W#16#00F0
L W#16#0090
>I
SPB FAIL
L #YEAR2
UW W#16#000F
L W#16#0009
>I
SPB FAIL
L #YEAR2
UW W#16#00F0
L W#16#0090
>I
SPB FAIL
//------------------------------------------------------
// Check whether specified year is 1990-1999 or 2000-2089
L B#16#89
L #YEAR1
>=I
SPB _2K1
// 1900 years correction (applicable for year 1990-1999)
OW W#16#1900
T #YEAR1
SPA Y2
// 2000 years correction (applicable for year 2000-2089)
_2K1: OW W#16#2000
T #YEAR1
// Check whether specified year is 1990-1999 or 2000-2089
Y2: L B#16#89
L #YEAR2
>=I
SPB _2K2
// 1900 years correction (applicable for year 1990-1999)
OW W#16#1900
T #YEAR2
SPA YRCK
// 2000 years correction (applicable for year 2000-2089)
_2K2: OW W#16#2000
T #YEAR2
//------------------------------------------------------
// Check if YEAR1 >= YEAR2.
// This check also works without BCD->INT conversion.
YRCK: L #YEAR1
L #YEAR2
<I
// year1 < year2 -> NOK
SPB NOK
// year1 > year2 -> OK
>I
SPB OK
//------------------------------------------------------
// Check if M:D:H DT1 >= M:D:H DT2 - Bytes 1 to 3
// Extract M:D:H from DT1 and DT2 (without year)
L D [AR1, P#0.0]
UD DW#16#00FFFFFF // Remove sign (and year)
L D [AR2, P#0.0]
UD DW#16#00FFFFFF // Remove sign (and year)
<D
// BCD-from-DT1 < BCD-from-DT2 -> NOK
// This check also works without BCD->INT conversion.
SPB NOK
>D
// BCD-from-DT1 > BCD-from-DT2 -> OK
SPB OK
//------------------------------------------------------
// Check if M:S:MS1 DT1 >= M:S:MS1 DT2 - Bytes 4 to 6
// Extract M:S:MS1 from DT1 and DT2
L D [AR1, P#3.0]
UD DW#16#00FFFFFF // Remove sign (and hour)
L D [AR2, P#3.0]
UD DW#16#00FFFFFF // Remove sign (and hour)
<D
// BCD-from-DT1 < BCD-from-DT2 -> NOK
// This check also works without BCD->INT conversion.
SPB NOK
>D
// BCD-from-DT1 > BCD-from-DT2 -> OK
SPB OK
//------------------------------------------------------
// Check if MS2:WD DT1 >= MS2:WD DT2 - Byte 7
// Extract MS2:WD from DT1 and DT2
L B [AR1, P#7.0]
L B [AR2, P#7.0]
<I
// BCD-from-DT1 < BCD-from-DT2 -> NOK
// This check also works without BCD->INT conversion.
SPB NOK
//------------------------------------------------------
// Everything is Ok.
// VKE is 1.
OK: = #RET_VAL // RET_VAL := 1
SAVE // BIE := 1
SPA END
// BCD failure. Set BIE := 0.
// Do not touch RET_VAL.
FAIL: CLR
SAVE // BIE := 0
SPA END
// BCD is Ok, but result is negative.
// VKE is 1.
NOK: SAVE // BIE := 1
CLR
= #RET_VAL // RET_VAL := 0
END: LAR1 #AR1_SAVE // Restore AR1 register
BE
"""
AwlLib.registerEntry(Lib__IEC__FC12_GE_DT)
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