Lolitech@545: #!/usr/bin/env python
Lolitech@545: # -*- coding: utf-8 -*-
Lolitech@545:
Lolitech@545: #This file is part of Beremiz, a Integrated Development Environment for
Lolitech@545: #programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
Lolitech@545: #
Lolitech@545: #Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
Lolitech@545: #
Lolitech@545: #See COPYING file for copyrights details.
Lolitech@545: #
Lolitech@545: #This library is free software; you can redistribute it and/or
Lolitech@545: #modify it under the terms of the GNU General Public
Lolitech@545: #License as published by the Free Software Foundation; either
Lolitech@545: #version 2.1 of the License, or (at your option) any later version.
Lolitech@545: #
Lolitech@545: #This library is distributed in the hope that it will be useful,
Lolitech@545: #but WITHOUT ANY WARRANTY; without even the implied warranty of
Lolitech@545: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lolitech@545: #General Public License for more details.
Lolitech@545: #
Lolitech@545: #You should have received a copy of the GNU General Public
Lolitech@545: #License along with this library; if not, write to the Free Software
Lolitech@545: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Lolitech@545:
Lolitech@545: import ctypes
Lolitech@545: from LPCAppProto import *
Lolitech@545: from LPCObject import *
Edouard@592: from targets.typemapping import SameEndianessTypeTranslator as TypeTranslator
Lolitech@545:
Lolitech@545: class LPCAppObject(LPCObject):
Lolitech@545: def connect(self,comport):
Lolitech@545: self.SerialConnection = LPCAppProto(comport,#number
Lolitech@545: 115200, #speed
Lolitech@545: 2) #timeout
Lolitech@545:
Lolitech@545: def StartPLC(self, debug=False):
Lolitech@545: self.HandleSerialTransaction(STARTTransaction())
Lolitech@545:
Lolitech@545: def StopPLC(self):
Lolitech@545: self.HandleSerialTransaction(STOPTransaction())
Lolitech@558: return True
Lolitech@545:
Lolitech@548: def ResetPLC(self):
Lolitech@545: self.HandleSerialTransaction(RESETTransaction())
Lolitech@545: return self.PLCStatus
Lolitech@545:
Lolitech@548: def GetPLCstatus(self):
edouard@575: self.HandleSerialTransaction(GET_PLCIDTransaction())
Lolitech@545: return self.PLCStatus
Lolitech@545:
Lolitech@545: def MatchMD5(self, MD5):
Lolitech@545: data = self.HandleSerialTransaction(GET_PLCIDTransaction())
laurent@562: if data is not None:
edouard@575: return data[:32] == MD5[:32]
laurent@562: return False
Lolitech@545:
Lolitech@545: def SetTraceVariablesList(self, idxs):
Lolitech@545: """
Lolitech@545: Call ctype imported function to append
Lolitech@545: these indexes to registred variables in PLC debugger
Lolitech@545: """
Lolitech@545: if idxs:
Lolitech@545: buff = ""
Lolitech@545: # keep a copy of requested idx
Lolitech@545: self._Idxs = idxs[:]
Lolitech@545: for idx,iectype,force in idxs:
Lolitech@545: idxstr = ctypes.string_at(
Lolitech@545: ctypes.pointer(
edouard@576: ctypes.c_uint32(idx)),4)
Lolitech@545: if force !=None:
edouard@593: c_type,unpack_func, pack_func = TypeTranslator.get(iectype, (None,None,None))
edouard@576: forced_type_size = ctypes.sizeof(c_type)
edouard@577: forced_type_size_str = chr(forced_type_size)
Lolitech@545: forcestr = ctypes.string_at(
Lolitech@545: ctypes.pointer(
Lolitech@545: pack_func(c_type,force)),
Lolitech@545: forced_type_size)
Lolitech@545: buff += idxstr + forced_type_size_str + forcestr
Lolitech@545: else:
Lolitech@545: buff += idxstr + chr(0)
Lolitech@545: else:
edouard@578: buff = ""
Lolitech@545: self._Idxs = []
Lolitech@545:
edouard@578: self.HandleSerialTransaction(SET_TRACE_VARIABLETransaction(buff))
edouard@578:
Lolitech@545: def GetTraceVariables(self):
Lolitech@545: """
Lolitech@545: Return a list of variables, corresponding to the list of required idx
Lolitech@545: """
Lolitech@545: offset = 0
Lolitech@545: strbuf = self.HandleSerialTransaction(
Lolitech@545: GET_TRACE_VARIABLETransaction())
edouard@576: if strbuf is not None and len(strbuf) > 4 and self.PLCStatus == "Started":
edouard@577: res=[]
edouard@576: size = len(strbuf) - 4
Lolitech@545: tick = ctypes.cast(
Lolitech@545: ctypes.c_char_p(strbuf[:4]),
Lolitech@545: ctypes.POINTER(ctypes.c_int)).contents
edouard@577: buff = ctypes.cast(
Lolitech@545: ctypes.c_char_p(strbuf[4:]),
Lolitech@545: ctypes.c_void_p)
Lolitech@545: for idx, iectype, forced in self._Idxs:
edouard@577: cursor = ctypes.c_void_p(buff.value + offset)
edouard@593: c_type,unpack_func, pack_func = TypeTranslator.get(iectype, (None,None,None))
Lolitech@545: if c_type is not None and offset < size:
Lolitech@545: res.append(unpack_func(ctypes.cast(cursor,
Lolitech@545: ctypes.POINTER(c_type)).contents))
Lolitech@545: offset += ctypes.sizeof(c_type)
Lolitech@545: else:
Lolitech@557: #if c_type is None:
Lolitech@557: #PLCprint("Debug error - " + iectype + " not supported !")
Lolitech@557: #if offset >= size:
Lolitech@557: #PLCprint("Debug error - buffer too small !")
Lolitech@545: break
Lolitech@545: if offset and offset == size:
Lolitech@545: return self.PLCStatus, tick.value, res
Lolitech@557: #PLCprint("Debug error - wrong buffer unpack !")
edouard@578: return self.PLCStatus, None, []
Lolitech@545: