Edouard@592: #!/usr/bin/env python
Edouard@592: # -*- coding: utf-8 -*-
Edouard@592: #
Edouard@592: #Copyright (C) 2011: Edouard TISSERANT and Laurent BESSARD
Edouard@592: #
Edouard@592: #See COPYING file for copyrights details.
Edouard@592: #
Edouard@592: #This library is free software; you can redistribute it and/or
Edouard@592: #modify it under the terms of the GNU General Public
Edouard@592: #License as published by the Free Software Foundation; either
Edouard@592: #version 2.1 of the License, or (at your option) any later version.
Edouard@592: #
Edouard@592: #This library is distributed in the hope that it will be useful,
Edouard@592: #but WITHOUT ANY WARRANTY; without even the implied warranty of
Edouard@592: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Edouard@592: #General Public License for more details.
Edouard@592: #
Edouard@592: #You should have received a copy of the GNU General Public
Edouard@592: #License along with this library; if not, write to the Free Software
Edouard@592: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
Edouard@592: 
Edouard@592: from ctypes import *
edouard@593: from datetime import timedelta as td
Edouard@592: 
Edouard@592: class IEC_STRING(Structure):
Edouard@592:     """
Edouard@592:     Must be changed according to changes in iec_types.h
Edouard@592:     """
Edouard@592:     _fields_ = [("len", c_uint8),
Edouard@592:                 ("body", c_char * 126)] 
Edouard@592: 
Edouard@592: class IEC_TIME(Structure):
Edouard@592:     """
Edouard@592:     Must be changed according to changes in iec_types.h
Edouard@592:     """
Edouard@592:     _fields_ = [("s", c_long), #tv_sec
Edouard@592:                 ("ns", c_long)] #tv_nsec
Edouard@592: 
Edouard@592: def _t(t, u=lambda x:x.value, p=lambda t,x:t(x)): return  (t, u, p)
Edouard@595: def _ttime(): return (IEC_TIME, 
Edouard@595:                       lambda x:td(0, x.s, x.ns/1000), 
Edouard@595:                       lambda t,x:t(x.days * 24 * 3600 + x.seconds, x.microseconds*1000))
Edouard@592: 
Edouard@592: SameEndianessTypeTranslator = {
Edouard@592:     "BOOL" :       _t(c_uint8,  lambda x:x.value!=0),
Edouard@592:     "STEP" :       _t(c_uint8),
Edouard@592:     "TRANSITION" : _t(c_uint8),
Edouard@592:     "ACTION" :     _t(c_uint8),
Edouard@592:     "SINT" :       _t(c_int8),
Edouard@592:     "USINT" :      _t(c_uint8),
Edouard@592:     "BYTE" :       _t(c_uint8),
Edouard@595:     "STRING" :     (IEC_STRING, 
Edouard@592:                       lambda x:x.body[:x.len], 
Edouard@592:                       lambda t,x:t(len(x),x)),
Edouard@592:     "INT" :        _t(c_int16),
Edouard@592:     "UINT" :       _t(c_uint16),
Edouard@592:     "WORD" :       _t(c_uint16),
Edouard@592:     "DINT" :       _t(c_int32),
Edouard@592:     "UDINT" :      _t(c_uint32),
Edouard@592:     "DWORD" :      _t(c_uint32),
Edouard@592:     "LINT" :       _t(c_int64),
Edouard@592:     "ULINT" :      _t(c_uint64),
Edouard@592:     "LWORD" :      _t(c_uint64),
Edouard@592:     "REAL" :       _t(c_float),
Edouard@592:     "LREAL" :      _t(c_double),
Edouard@595:     "TIME" :       _ttime(),
Edouard@595:     "TOD" :        _ttime(),
Edouard@595:     "DATE" :       _ttime(),
Edouard@595:     "DT" :         _ttime(),
Edouard@592:     } 
Edouard@592: 
Edouard@592: SwapedEndianessTypeTranslator = {
Edouard@592:     #TODO
Edouard@592:     } 
Edouard@592: 
Edouard@592: # Construct debugger natively supported types
Edouard@592: DebugTypesSize =  dict([(key,sizeof(t)) for key,(t,p,u) in SameEndianessTypeTranslator.iteritems() if t is not None])
Edouard@592: