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# -*- coding: utf-8 -*-
#
# AWL simulator - SFCs
#
# Copyright 2015-2018 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.common.datatypehelpers import * #+cimport
from awlsim.common.exceptions import *
from awlsim.common.monotonic import * #+cimport
from awlsim.common.util import *
from awlsim.core.systemblocks.systemblocks import * #+cimport
from awlsim.core.blockinterface import *
from awlsim.core.datatypes import *
import time
class SFC47(SFC): #+cdef
name = (47, "WAIT", "delay time")
interfaceFields = {
BlockInterfaceField.FTYPE_IN : (
BlockInterfaceField(name="WT", dataType="INT"),
)
}
def run(self): #+cpdef
#@cy cdef S7StatusWord s
#@cy cdef int32_t WT
#@cy cdef double start
#@cy cdef double end
#@cy cdef double now
# Get the start time early before fetching WT.
timer = monotonic_time
start = timer()
s = self.cpu.statusWord
# Delay for the specified amount of microseconds.
# WT is an int, so the maximum delay is 32767 us.
WT = wordToSignedPyInt(AwlMemoryObject_asScalar(
self.fetchInterfaceFieldByName("WT")))
if WT > 0:
end = start + (min(WT, 32767) / 1000000.0)
now = timer()
while now < end and now >= start:
now = timer()
self.cpu.updateTimestamp()
s.BIE = 1
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