Fix pylint warning [C0325(superfluous-parens), ] Unnecessary parens after u'if' keyword
************* Module runtime.PLCObject
runtime/PLCObject.py:609: [C0325(superfluous-parens), ] Unnecessary parens after u'if' keyword
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz
#
# Copyright (C) 2011-2014: Laurent BESSARD, Edouard TISSERANT
# RTES Lab : CRKim, JBLee, youcu
# Higen Motor : Donggu Kang
#
# See COPYING file for copyrights details.
from __future__ import absolute_import
from __future__ import division
import os
from etherlab.EthercatSlave import ExtractHexDecValue, DATATYPECONVERSION, ExtractName
SLAVE_PDOS_CONFIGURATION_DECLARATION = """
/* Slave %(slave)d, "%(device_type)s"
* Vendor ID: 0x%(vendor).8x
* Product code: 0x%(product_code).8x
* Revision number: 0x%(revision_number).8x
*/
ec_pdo_entry_info_t slave_%(slave)d_pdo_entries[] = {
%(pdos_entries_infos)s
};
ec_pdo_info_t slave_%(slave)d_pdos[] = {
%(pdos_infos)s
};
ec_sync_info_t slave_%(slave)d_syncs[] = {
%(pdos_sync_infos)s
{0xff}
};
"""
SLAVE_CONFIGURATION_TEMPLATE = """
if (!(slave%(slave)d = ecrt_master_slave_config(master, %(alias)d, %(position)d, 0x%(vendor).8x, 0x%(product_code).8x))) {
SLOGF(LOG_CRITICAL, "EtherCAT failed to get slave %(device_type)s configuration at alias %(alias)d and position %(position)d.");
goto ecat_failed;
}
if (ecrt_slave_config_pdos(slave%(slave)d, EC_END, slave_%(slave)d_syncs)) {
SLOGF(LOG_CRITICAL, "EtherCAT failed to configure PDOs for slave %(device_type)s at alias %(alias)d and position %(position)d.");
goto ecat_failed;
}
"""
SLAVE_INITIALIZATION_TEMPLATE = """
{
uint8_t value[%(data_size)d];
EC_WRITE_%(data_type)s((uint8_t *)value, %(data)s);
if (ecrt_master_sdo_download(master, %(slave)d, 0x%(index).4x, 0x%(subindex).2x, (uint8_t *)value, %(data_size)d, &abort_code)) {
SLOGF(LOG_CRITICAL, "EtherCAT Failed to initialize slave %(device_type)s at alias %(alias)d and position %(position)d. Error: %%d", abort_code);
goto ecat_failed;
}
}
"""
SLAVE_OUTPUT_PDO_DEFAULT_VALUE = """
{
uint8_t value[%(data_size)d];
if (ecrt_master_sdo_upload(master, %(slave)d, 0x%(index).4x, 0x%(subindex).2x, (uint8_t *)value, %(data_size)d, &result_size, &abort_code)) {
SLOGF(LOG_CRITICAL, "EtherCAT failed to get default value for output PDO in slave %(device_type)s at alias %(alias)d and position %(position)d. Error: %%ud", abort_code);
goto ecat_failed;
}
%(real_var)s = EC_READ_%(data_type)s((uint8_t *)value);
}
"""
def ConfigureVariable(entry_infos, str_completion):
entry_infos["data_type"] = DATATYPECONVERSION.get(entry_infos["var_type"], None)
if entry_infos["data_type"] is None:
msg = _("Type of location \"%s\" not yet supported!") % entry_infos["var_name"]
raise ValueError(msg)
if not entry_infos.get("no_decl", False):
if "real_var" in entry_infos:
str_completion["located_variables_declaration"].append(
"IEC_%(var_type)s %(real_var)s;" % entry_infos)
else:
entry_infos["real_var"] = "beremiz" + entry_infos["var_name"]
str_completion["located_variables_declaration"].extend(
["IEC_%(var_type)s %(real_var)s;" % entry_infos,
"IEC_%(var_type)s *%(var_name)s = &%(real_var)s;" % entry_infos])
for declaration in entry_infos.get("extra_declarations", []):
entry_infos["extra_decl"] = declaration
str_completion["located_variables_declaration"].append(
"IEC_%(var_type)s *%(extra_decl)s = &%(real_var)s;" % entry_infos)
elif "real_var" not in entry_infos:
entry_infos["real_var"] = "beremiz" + entry_infos["var_name"]
str_completion["used_pdo_entry_offset_variables_declaration"].append(
"unsigned int slave%(slave)d_%(index).4x_%(subindex).2x;" % entry_infos)
if entry_infos["data_type"] == "BIT":
str_completion["used_pdo_entry_offset_variables_declaration"].append(
"unsigned int slave%(slave)d_%(index).4x_%(subindex).2x_bit;" % entry_infos)
str_completion["used_pdo_entry_configuration"].append(
(" {%(alias)d, %(position)d, 0x%(vendor).8x, 0x%(product_code).8x, " +
"0x%(index).4x, %(subindex)d, &slave%(slave)d_%(index).4x_%(subindex).2x, " +
"&slave%(slave)d_%(index).4x_%(subindex).2x_bit},") % entry_infos)
if entry_infos["dir"] == "I":
str_completion["retrieve_variables"].append(
(" %(real_var)s = EC_READ_BIT(domain1_pd + slave%(slave)d_%(index).4x_%(subindex).2x, " +
"slave%(slave)d_%(index).4x_%(subindex).2x_bit);") % entry_infos)
elif entry_infos["dir"] == "Q":
str_completion["publish_variables"].append(
(" EC_WRITE_BIT(domain1_pd + slave%(slave)d_%(index).4x_%(subindex).2x, " +
"slave%(slave)d_%(index).4x_%(subindex).2x_bit, %(real_var)s);") % entry_infos)
else:
str_completion["used_pdo_entry_configuration"].append(
(" {%(alias)d, %(position)d, 0x%(vendor).8x, 0x%(product_code).8x, 0x%(index).4x, " +
"%(subindex)d, &slave%(slave)d_%(index).4x_%(subindex).2x},") % entry_infos)
if entry_infos["dir"] == "I":
str_completion["retrieve_variables"].append(
(" %(real_var)s = EC_READ_%(data_type)s(domain1_pd + " +
"slave%(slave)d_%(index).4x_%(subindex).2x);") % entry_infos)
elif entry_infos["dir"] == "Q":
str_completion["publish_variables"].append(
(" EC_WRITE_%(data_type)s(domain1_pd + slave%(slave)d_%(index).4x_%(subindex).2x, " +
"%(real_var)s);") % entry_infos)
def ExclusionSortFunction(x, y):
if x["matching"] == y["matching"]:
if x["assigned"] and not y["assigned"]:
return -1
elif not x["assigned"] and y["assigned"]:
return 1
return cmp(x["count"], y["count"])
return -cmp(x["matching"], y["matching"])
class _EthercatCFileGenerator(object):
def __init__(self, controler):
self.Controler = controler
self.Slaves = []
self.UsedVariables = {}
def __del__(self):
self.Controler = None
def DeclareSlave(self, slave_index, slave):
self.Slaves.append((slave_index, slave.getInfo().getAutoIncAddr(), slave))
def DeclareVariable(self, slave_index, index, subindex, iec_type, dir, name, no_decl=False):
slave_variables = self.UsedVariables.setdefault(slave_index, {})
entry_infos = slave_variables.get((index, subindex), None)
if entry_infos is None:
slave_variables[(index, subindex)] = {
"infos": (iec_type, dir, name, no_decl, []),
"mapped": False}
return name
elif entry_infos["infos"][:2] == (iec_type, dir):
if name != entry_infos["infos"][2]:
if dir == "I":
entry_infos["infos"][4].append(name)
return entry_infos["infos"][2]
else:
msg = _("Output variables can't be defined with different locations ({a1} and {a2})").\
format(a1=entry_infos["infos"][2], a2=name)
raise ValueError(msg)
else:
raise ValueError(_("Definition conflict for location \"%s\"") % name)
def GenerateCFile(self, filepath, location_str, master_number):
# Extract etherlab master code template
plc_etherlab_filepath = os.path.join(os.path.split(__file__)[0], "plc_etherlab.c")
plc_etherlab_file = open(plc_etherlab_filepath, 'r')
plc_etherlab_code = plc_etherlab_file.read()
plc_etherlab_file.close()
# Initialize strings for formatting master code template
str_completion = {
"location": location_str,
"master_number": master_number,
"located_variables_declaration": [],
"used_pdo_entry_offset_variables_declaration": [],
"used_pdo_entry_configuration": [],
"pdos_configuration_declaration": "",
"slaves_declaration": "",
"slaves_configuration": "",
"slaves_output_pdos_default_values_extraction": "",
"slaves_initialization": "",
"retrieve_variables": [],
"publish_variables": [],
}
# Initialize variable storing variable mapping state
for slave_entries in self.UsedVariables.itervalues():
for entry_infos in slave_entries.itervalues():
entry_infos["mapped"] = False
# Sort slaves by position (IEC_Channel)
self.Slaves.sort()
# Initialize dictionary storing alias auto-increment position values
alias = {}
# Generating code for each slave
for (slave_idx, slave_alias, slave) in self.Slaves:
type_infos = slave.getType()
# Defining slave alias and auto-increment position
if alias.get(slave_alias) is not None:
alias[slave_alias] += 1
else:
alias[slave_alias] = 0
slave_pos = (slave_alias, alias[slave_alias])
# Extract slave device informations
device, module_extra_params = self.Controler.GetModuleInfos(type_infos)
if device is None:
msg = _("No informations found for device %s!") \
% (type_infos["device_type"])
raise ValueError(msg)
# Extract slaves variables to be mapped
slave_variables = self.UsedVariables.get(slave_idx, {})
# Extract slave device object dictionary entries
device_entries = device.GetEntriesList()
# Adding code for declaring slave in master code template strings
for element in ["vendor", "product_code", "revision_number"]:
type_infos[element] = ExtractHexDecValue(type_infos[element])
type_infos.update(dict(zip(["slave", "alias", "position"], (slave_idx,) + slave_pos)))
# Extract slave device CoE informations
device_coe = device.getCoE()
if device_coe is not None:
# If device support CanOpen over Ethernet, adding code for calling
# init commands when initializing slave in master code template strings
initCmds = []
for initCmd in device_coe.getInitCmd():
initCmds.append({
"Index": ExtractHexDecValue(initCmd.getIndex()),
"Subindex": ExtractHexDecValue(initCmd.getSubIndex()),
"Value": initCmd.getData().getcontent()})
initCmds.extend(slave.getStartupCommands())
for initCmd in initCmds:
index = initCmd["Index"]
subindex = initCmd["Subindex"]
entry = device_entries.get((index, subindex), None)
if entry is not None:
data_size = entry["BitSize"] // 8
data_str = ("0x%%.%dx" % (data_size * 2)) % initCmd["Value"]
init_cmd_infos = {
"index": index,
"subindex": subindex,
"data": data_str,
"data_type": DATATYPECONVERSION.get(entry["Type"]),
"data_size": data_size
}
init_cmd_infos.update(type_infos)
str_completion["slaves_initialization"] += SLAVE_INITIALIZATION_TEMPLATE % init_cmd_infos
# Extract slave device PDO configuration capabilities
PdoAssign = device_coe.getPdoAssign()
PdoConfig = device_coe.getPdoConfig()
else:
PdoAssign = PdoConfig = False
# Test if slave has a configuration or need one
if len(device.getTxPdo() + device.getRxPdo()) > 0 or len(slave_variables) > 0 and PdoConfig and PdoAssign:
str_completion["slaves_declaration"] += "static ec_slave_config_t *slave%(slave)d = NULL;\n" % type_infos
str_completion["slaves_configuration"] += SLAVE_CONFIGURATION_TEMPLATE % type_infos
# Initializing
pdos_infos = {
"pdos_entries_infos": [],
"pdos_infos": [],
"pdos_sync_infos": [],
}
pdos_infos.update(type_infos)
sync_managers = []
for sync_manager_idx, sync_manager in enumerate(device.getSm()):
sync_manager_infos = {
"index": sync_manager_idx,
"name": sync_manager.getcontent(),
"slave": slave_idx,
"pdos": [],
"pdos_number": 0,
}
sync_manager_control_byte = ExtractHexDecValue(sync_manager.getControlByte())
sync_manager_direction = sync_manager_control_byte & 0x0c
sync_manager_watchdog = sync_manager_control_byte & 0x40
if sync_manager_direction:
sync_manager_infos["sync_manager_type"] = "EC_DIR_OUTPUT"
else:
sync_manager_infos["sync_manager_type"] = "EC_DIR_INPUT"
if sync_manager_watchdog:
sync_manager_infos["watchdog"] = "EC_WD_ENABLE"
else:
sync_manager_infos["watchdog"] = "EC_WD_DISABLE"
sync_managers.append(sync_manager_infos)
pdos_index = []
exclusive_pdos = {}
selected_pdos = []
for pdo, pdo_type in ([(pdo, "Inputs") for pdo in device.getTxPdo()] +
[(pdo, "Outputs") for pdo in device.getRxPdo()]):
pdo_index = ExtractHexDecValue(pdo.getIndex().getcontent())
pdos_index.append(pdo_index)
excluded_list = pdo.getExclude()
if len(excluded_list) > 0:
exclusion_list = [pdo_index]
for excluded in excluded_list:
exclusion_list.append(ExtractHexDecValue(excluded.getcontent()))
exclusion_list.sort()
exclusion_scope = exclusive_pdos.setdefault(tuple(exclusion_list), [])
entries = pdo.getEntry()
pdo_mapping_match = {
"index": pdo_index,
"matching": 0,
"count": len(entries),
"assigned": pdo.getSm() is not None
}
exclusion_scope.append(pdo_mapping_match)
for entry in entries:
index = ExtractHexDecValue(entry.getIndex().getcontent())
subindex = ExtractHexDecValue(entry.getSubIndex())
if slave_variables.get((index, subindex), None) is not None:
pdo_mapping_match["matching"] += 1
if pdo.getFixed() is not True:
pdo_mapping_match["matching"] += \
module_extra_params["max_pdo_size"] - \
pdo_mapping_match["count"]
elif pdo.getMandatory():
selected_pdos.append(pdo_index)
excluded_pdos = []
for exclusion_scope in exclusive_pdos.itervalues():
exclusion_scope.sort(ExclusionSortFunction)
start_excluding_index = 0
if exclusion_scope[0]["matching"] > 0:
selected_pdos.append(exclusion_scope[0]["index"])
start_excluding_index = 1
excluded_pdos.extend([
pdo["index"]
for pdo in exclusion_scope[start_excluding_index:]
if PdoAssign or not pdo["assigned"]])
for pdo, pdo_type in ([(pdo, "Inputs") for pdo in device.getTxPdo()] +
[(pdo, "Outputs") for pdo in device.getRxPdo()]):
entries = pdo.getEntry()
pdo_index = ExtractHexDecValue(pdo.getIndex().getcontent())
if pdo_index in excluded_pdos:
continue
pdo_needed = pdo_index in selected_pdos
entries_infos = []
for entry in entries:
index = ExtractHexDecValue(entry.getIndex().getcontent())
subindex = ExtractHexDecValue(entry.getSubIndex())
entry_infos = {
"index": index,
"subindex": subindex,
"name": ExtractName(entry.getName()),
"bitlen": entry.getBitLen(),
}
entry_infos.update(type_infos)
entries_infos.append(" {0x%(index).4x, 0x%(subindex).2x, %(bitlen)d}, /* %(name)s */" % entry_infos)
entry_declaration = slave_variables.get((index, subindex), None)
if entry_declaration is not None and not entry_declaration["mapped"]:
pdo_needed = True
entry_infos.update(dict(zip(["var_type", "dir", "var_name", "no_decl", "extra_declarations"],
entry_declaration["infos"])))
entry_declaration["mapped"] = True
entry_type = entry.getDataType().getcontent()
if entry_infos["var_type"] != entry_type:
message = _("Wrong type for location \"%s\"!") % entry_infos["var_name"]
if self.Controler.GetSizeOfType(entry_infos["var_type"]) != \
self.Controler.GetSizeOfType(entry_type):
raise ValueError(message)
else:
self.Controler.GetCTRoot().logger.write_warning(_("Warning: ") + message + "\n")
if (entry_infos["dir"] == "I" and pdo_type != "Inputs") or \
(entry_infos["dir"] == "Q" and pdo_type != "Outputs"):
raise ValueError(_("Wrong direction for location \"%s\"!") % entry_infos["var_name"])
ConfigureVariable(entry_infos, str_completion)
elif pdo_type == "Outputs" and entry.getDataType() is not None and device_coe is not None:
data_type = entry.getDataType().getcontent()
entry_infos["dir"] = "Q"
entry_infos["data_size"] = max(1, entry_infos["bitlen"] // 8)
entry_infos["data_type"] = DATATYPECONVERSION.get(data_type)
entry_infos["var_type"] = data_type
entry_infos["real_var"] = "slave%(slave)d_%(index).4x_%(subindex).2x_default" % entry_infos
ConfigureVariable(entry_infos, str_completion)
str_completion["slaves_output_pdos_default_values_extraction"] += \
SLAVE_OUTPUT_PDO_DEFAULT_VALUE % entry_infos
if pdo_needed:
for excluded in pdo.getExclude():
excluded_index = ExtractHexDecValue(excluded.getcontent())
if excluded_index not in excluded_pdos:
excluded_pdos.append(excluded_index)
sm = pdo.getSm()
if sm is None:
for sm_idx, sync_manager in enumerate(sync_managers):
if sync_manager["name"] == pdo_type:
sm = sm_idx
if sm is None:
raise ValueError(_("No sync manager available for %s pdo!") % pdo_type)
sync_managers[sm]["pdos_number"] += 1
sync_managers[sm]["pdos"].append(
{"slave": slave_idx,
"index": pdo_index,
"name": ExtractName(pdo.getName()),
"type": pdo_type,
"entries": entries_infos,
"entries_number": len(entries_infos),
"fixed": pdo.getFixed() is True})
if PdoConfig and PdoAssign:
dynamic_pdos = {}
dynamic_pdos_number = 0
for category, min_index, max_index in [("Inputs", 0x1600, 0x1800),
("Outputs", 0x1a00, 0x1C00)]:
for sync_manager in sync_managers:
if sync_manager["name"] == category:
category_infos = dynamic_pdos.setdefault(category, {})
category_infos["sync_manager"] = sync_manager
category_infos["pdos"] = [pdo for pdo in category_infos["sync_manager"]["pdos"]
if not pdo["fixed"] and pdo["type"] == category]
category_infos["current_index"] = min_index
category_infos["max_index"] = max_index
break
for (index, subindex), entry_declaration in slave_variables.iteritems():
if not entry_declaration["mapped"]:
entry = device_entries.get((index, subindex), None)
if entry is None:
msg = _("Unknown entry index 0x{a1:.4x}, subindex 0x{a2:.2x} for device {a3}").\
format(a1=index, a2=subindex, a3=type_infos["device_type"])
raise ValueError(msg)
entry_infos = {
"index": index,
"subindex": subindex,
"name": entry["Name"],
"bitlen": entry["BitSize"],
}
entry_infos.update(type_infos)
entry_infos.update(dict(zip(["var_type", "dir", "var_name", "no_decl", "extra_declarations"],
entry_declaration["infos"])))
entry_declaration["mapped"] = True
if entry_infos["var_type"] != entry["Type"]:
message = _("Wrong type for location \"%s\"!") % entry_infos["var_name"]
if self.Controler.GetSizeOfType(entry_infos["var_type"]) != \
self.Controler.GetSizeOfType(entry["Type"]):
raise ValueError(message)
else:
self.Controler.GetCTRoot().logger.write_warning(message + "\n")
if entry_infos["dir"] == "I" and entry["PDOMapping"] in ["T", "RT"]:
pdo_type = "Inputs"
elif entry_infos["dir"] == "Q" and entry["PDOMapping"] in ["R", "RT"]:
pdo_type = "Outputs"
else:
msg = _("Wrong direction for location \"%s\"!") \
% entry_infos["var_name"]
raise ValueError(msg)
if pdo_type not in dynamic_pdos:
msg = _("No Sync manager defined for %s!") % pdo_type
raise ValueError(msg)
ConfigureVariable(entry_infos, str_completion)
if len(dynamic_pdos[pdo_type]["pdos"]) > 0:
pdo = dynamic_pdos[pdo_type]["pdos"][0]
elif module_extra_params["add_pdo"]:
while dynamic_pdos[pdo_type]["current_index"] in pdos_index:
dynamic_pdos[pdo_type]["current_index"] += 1
if dynamic_pdos[pdo_type]["current_index"] >= dynamic_pdos[pdo_type]["max_index"]:
raise ValueError(_("No more free PDO index available for %s!") % pdo_type)
pdos_index.append(dynamic_pdos[pdo_type]["current_index"])
dynamic_pdos_number += 1
pdo = {"slave": slave_idx,
"index": dynamic_pdos[pdo_type]["current_index"],
"name": "Dynamic PDO %d" % dynamic_pdos_number,
"type": pdo_type,
"entries": [],
"entries_number": 0,
"fixed": False}
dynamic_pdos[pdo_type]["sync_manager"]["pdos_number"] += 1
dynamic_pdos[pdo_type]["sync_manager"]["pdos"].append(pdo)
dynamic_pdos[pdo_type]["pdos"].append(pdo)
else:
break
pdo["entries"].append(" {0x%(index).4x, 0x%(subindex).2x, %(bitlen)d}, /* %(name)s */" % entry_infos)
if entry_infos["bitlen"] < module_extra_params["pdo_alignment"]:
pdo["entries"].append(" {0x0000, 0x00, %d}, /* None */" % (
module_extra_params["pdo_alignment"] - entry_infos["bitlen"]))
pdo["entries_number"] += 1
if pdo["entries_number"] == module_extra_params["max_pdo_size"]:
dynamic_pdos[pdo_type]["pdos"].pop(0)
pdo_offset = 0
entry_offset = 0
for sync_manager_infos in sync_managers:
for pdo_infos in sync_manager_infos["pdos"]:
pdo_infos["offset"] = entry_offset
pdo_entries = pdo_infos["entries"]
pdos_infos["pdos_infos"].append(
(" {0x%(index).4x, %(entries_number)d, " +
"slave_%(slave)d_pdo_entries + %(offset)d}, /* %(name)s */") % pdo_infos)
entry_offset += len(pdo_entries)
pdos_infos["pdos_entries_infos"].extend(pdo_entries)
sync_manager_infos["offset"] = pdo_offset
pdo_offset_shift = sync_manager_infos["pdos_number"]
pdos_infos["pdos_sync_infos"].append(
(" {%(index)d, %(sync_manager_type)s, %(pdos_number)d, " +
("slave_%(slave)d_pdos + %(offset)d" if pdo_offset_shift else "NULL") +
", %(watchdog)s},") % sync_manager_infos)
pdo_offset += pdo_offset_shift
for element in ["pdos_entries_infos", "pdos_infos", "pdos_sync_infos"]:
pdos_infos[element] = "\n".join(pdos_infos[element])
str_completion["pdos_configuration_declaration"] += SLAVE_PDOS_CONFIGURATION_DECLARATION % pdos_infos
for (index, subindex), entry_declaration in slave_variables.iteritems():
if not entry_declaration["mapped"]:
message = _("Entry index 0x{a1:.4x}, subindex 0x{a2:.2x} not mapped for device {a3}").\
format(a1=index, a2=subindex, a3=type_infos["device_type"])
self.Controler.GetCTRoot().logger.write_warning(_("Warning: ") + message + "\n")
for element in ["used_pdo_entry_offset_variables_declaration",
"used_pdo_entry_configuration",
"located_variables_declaration",
"retrieve_variables",
"publish_variables"]:
str_completion[element] = "\n".join(str_completion[element])
etherlabfile = open(filepath, 'w')
etherlabfile.write(plc_etherlab_code % str_completion)
etherlabfile.close()