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# -*- coding: utf-8 -*-
#
# AWL simulator - PyProfibus hardware interface
#
# Copyright 2013-2021 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.util import *
from awlsim.common.exceptions import *
#from awlsimhw_pyprofibus.main cimport * #@cy
from awlsim.core.hardware_params import *
from awlsim.core.hardware import * #+cimport
from awlsim.core.operators import * #+cimport
from awlsim.core.offset import * #+cimport
from awlsim.core.cpu import * #+cimport
class HardwareInterface_PyProfibus(AbstractHardwareInterface): #+cdef
name = "PyProfibus"
description = "PROFIBUS-DP support with PyProfibus.\n"\
"https://bues.ch/a/profibus"
# Hardware-specific parameters
paramDescs = [
HwParamDesc_str("config",
defaultValue = "awlsimhw_pyprofibus.conf",
description = "Awlsim pyprofibus module config file."),
]
def __init__(self, sim, parameters={}):
AbstractHardwareInterface.__init__(self,
sim = sim,
parameters = parameters)
def __setupSlaves(self):
setPrmReq = self.pyprofibus.dp.DpTelegram_SetPrm_Req
dp1PrmMask = bytearray((setPrmReq.DPV1PRM0_FAILSAFE,
setPrmReq.DPV1PRM1_REDCFG,
0x00))
dp1PrmSet = bytearray((setPrmReq.DPV1PRM0_FAILSAFE,
setPrmReq.DPV1PRM1_REDCFG,
0x00))
for slaveConf in self.__conf.slaveConfs:
slaveDesc = slaveConf.makeDpSlaveDesc()
if slaveConf.gsd.isDPV1():
slaveDesc.setUserPrmData(slaveConf.gsd.getUserPrmData(
dp1PrmMask=dp1PrmMask,
dp1PrmSet=dp1PrmSet))
self.master.addSlave(slaveDesc)
def __cleanup(self):
if self.master:
self.master.destroy()
self.master = None
self.cachedInputs = [None] * (0x7F + 1)
def doStartup(self):
# Import the PROFIBUS hardware access modules
# and keep references to it.
try:
import pyprofibus
self.pyprofibus = pyprofibus
except (ImportError, RuntimeError) as e: #@nocov
self.raiseException("Failed to import PROFIBUS protocol stack "
"module 'pyprofibus':\n%s" % str(e))
# Initialize the DPM
self.master = None
try:
self.__conf = self.pyprofibus.PbConf.fromFile(
self.getParamValueByName("config"))
self.master = self.__conf.makeDPM()
self.__setupSlaves()
self.master.initialize()
self.slaveList = self.master.getSlaveList()
self.cachedInputs = [None] * (0x7F + 1)
except self.pyprofibus.PhyError as e:
self.raiseException("Profibus-PHY error: %s" % str(e))
self.__cleanup()
except self.pyprofibus.DpError as e:
self.raiseException("Profibus-DP error: %s" % str(e))
self.__cleanup()
except self.pyprofibus.FdlError as e:
self.raiseException("Profibus-FDL error: %s" % str(e))
self.__cleanup()
except self.pyprofibus.conf.PbConfError as e:
self.raiseException("Profibus configuration error: %s" % str(e))
self.__cleanup()
def doShutdown(self):
self.__cleanup()
def readInputs(self): #+cdef
address = self.inputAddressBase
for slave in self.slaveList:
# Get the cached slave-data
inData = self.cachedInputs[slave.slaveAddr]
if inData is None:
continue
self.cachedInputs[slave.slaveAddr] = None
outputSize = slave.slaveConf.outputSize
assert len(inData) == outputSize
self.sim.cpu.storeInputRange(address, bytearray(inData))
# Adjust the address base for the next slave.
address += outputSize
def writeOutputs(self): #+cdef
try:
address = self.outputAddressBase
for slave in self.slaveList:
# Get the output data from the CPU
inputSize = slave.slaveConf.inputSize
outData = self.sim.cpu.fetchOutputRange(address, inputSize)
# Write the output data to the pyprofibus subsystem.
slave.setMasterOutData(outData)
# Adjust the address base for the next slave.
address += inputSize
# Run the pyprofibus master state machine.
slave = self.master.run()
if slave:
# Get the input data from the pyprofibus subsystem.
inData = slave.getMasterInData()
# Cache the input data for the readInputs() call.
self.cachedInputs[slave.slaveAddr] = inData
except self.pyprofibus.ProfibusError as e:
self.raiseException("Hardware error: %s" % str(e))
def directReadInput(self, accessWidth, accessOffset): #@nocy
#@cy cdef bytearray directReadInput(self, uint32_t accessWidth, uint32_t accessOffset):
return bytearray()#TODO
def directWriteOutput(self, accessWidth, accessOffset, data): #@nocy
#@cy cdef ExBool_t directWriteOutput(self, uint32_t accessWidth, uint32_t accessOffset, bytearray data) except ExBool_val:
return False#TODO
# Module entry point
HardwareInterface = HardwareInterface_PyProfibus
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