author | Laurent Bessard |
Wed, 27 Mar 2013 00:58:02 +0100 | |
changeset 38 | 13c9ff7f3b54 |
parent 35 | cb9da964a178 |
child 41 | b02a30880829 |
permissions | -rw-r--r-- |
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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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#This file is part of Beremiz, a Integrated Development Environment for |
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#programming IEC 61131-3 automates supporting plcopen standard and CanFestival. |
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# |
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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD |
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# |
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#See COPYING file for copyrights details. |
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# |
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#This library is free software; you can redistribute it and/or |
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#modify it under the terms of the GNU General Public |
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#License as published by the Free Software Foundation; either |
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#version 2.1 of the License, or (at your option) any later version. |
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# |
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#This library is distributed in the hope that it will be useful, |
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#but WITHOUT ANY WARRANTY; without even the implied warranty of |
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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#General Public License for more details. |
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# |
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#You should have received a copy of the GNU General Public |
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#License along with this library; if not, write to the Free Software |
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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import ctypes |
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from LPCAppProto import * |
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from LPCObject import * |
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from targets.typemapping import LogLevelsCount, SameEndianessTypeTranslator as TypeTranslator |
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class LPCAppObject(LPCObject): |
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def connect(self,comport): |
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self.SerialConnection = LPCAppProto(comport,#number |
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115200, #speed |
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2) #timeout |
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def StartPLC(self, debug=False): |
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self.HandleSerialTransaction(STARTTransaction()) |
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def StopPLC(self): |
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self.HandleSerialTransaction(STOPTransaction()) |
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return True |
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def ResetPLC(self): |
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self.HandleSerialTransaction(RESETTransaction()) |
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return self.PLCStatus |
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def GetPLCstatus(self): |
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strcounts = self.HandleSerialTransaction(GET_LOGCOUNTSTransaction()) |
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if strcounts is not None and len(strcounts) == LogLevelsCount * 4: |
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cstrcounts = ctypes.create_string_buffer(strcounts) |
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ccounts = ctypes.cast(cstrcounts, ctypes.POINTER(ctypes.c_uint32)) |
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counts = [int(ccounts[idx]) for idx in xrange(LogLevelsCount)] |
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else : |
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counts = [0]*LogLevelsCount |
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return self.PLCStatus, counts |
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def MatchMD5(self, MD5): |
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data = self.HandleSerialTransaction(GET_PLCIDTransaction()) |
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if data is not None: |
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return data[:32] == MD5[:32] |
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return False |
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def SetTraceVariablesList(self, idxs): |
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""" |
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Call ctype imported function to append |
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these indexes to registred variables in PLC debugger |
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""" |
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if idxs: |
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buff = "" |
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# keep a copy of requested idx |
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self._Idxs = idxs[:] |
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for idx,iectype,force in idxs: |
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idxstr = ctypes.string_at( |
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ctypes.pointer( |
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ctypes.c_uint32(idx)),4) |
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if force !=None: |
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c_type,unpack_func, pack_func = TypeTranslator.get(iectype, (None,None,None)) |
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forced_type_size = ctypes.sizeof(c_type) |
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forced_type_size_str = chr(forced_type_size) |
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forcestr = ctypes.string_at( |
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ctypes.pointer( |
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pack_func(c_type,force)), |
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forced_type_size) |
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buff += idxstr + forced_type_size_str + forcestr |
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else: |
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buff += idxstr + chr(0) |
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else: |
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buff = "" |
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self._Idxs = [] |
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|
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self.HandleSerialTransaction(SET_TRACE_VARIABLETransaction(buff)) |
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|
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def GetTraceVariables(self): |
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""" |
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Return a list of variables, corresponding to the list of required idx |
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""" |
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offset = 0 |
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strbuf = self.HandleSerialTransaction( |
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GET_TRACE_VARIABLETransaction()) |
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if strbuf is not None and len(strbuf) > 4 and self.PLCStatus == "Started": |
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res=[] |
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size = len(strbuf) - 4 |
31 | 103 |
ctick = ctypes.create_string_buffer(strbuf[:4]) |
104 |
tick = ctypes.cast(ctick, ctypes.POINTER(ctypes.c_int)).contents |
|
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cbuff = ctypes.create_string_buffer(strbuf[4:]) |
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buff = ctypes.cast(cbuff, ctypes.c_void_p) |
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for idx, iectype, forced in self._Idxs: |
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cursor = ctypes.c_void_p(buff.value + offset) |
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c_type,unpack_func, pack_func = TypeTranslator.get(iectype, (None,None,None)) |
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if c_type is not None and offset < size: |
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res.append(unpack_func(ctypes.cast(cursor, |
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ctypes.POINTER(c_type)).contents)) |
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offset += ctypes.sizeof(c_type) |
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else: |
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#if c_type is None: |
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#PLCprint("Debug error - " + iectype + " not supported !") |
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#if offset >= size: |
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#PLCprint("Debug error - buffer too small !") |
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break |
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if offset and offset == size: |
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return self.PLCStatus, tick.value, res |
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#PLCprint("Debug error - wrong buffer unpack !") |
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return self.PLCStatus, None, [] |
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124 |
|
29 | 125 |
def GetLogMessage(self, level, msgid): |
126 |
strbuf = self.HandleSerialTransaction(GET_LOGMSGTransaction(level, msgid)) |
|
35
cb9da964a178
Fixed bugs with pulling plc status and log count
Laurent Bessard
parents:
34
diff
changeset
|
127 |
if strbuf is not None and len(strbuf) > 12: |
29 | 128 |
cbuf = ctypes.cast( |
129 |
ctypes.c_char_p(strbuf[:12]), |
|
130 |
ctypes.POINTER(ctypes.c_uint32)) |
|
131 |
return (strbuf[12:],)+tuple(int(cbuf[idx]) for idx in range(3)) |
|
132 |
return None |