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#!/usr/bin/env python
# Copyright (c) 2016, Eduard Broecker
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are permitted provided that
# the following conditions are met:
#
# Redistributions of source code must retain the above copyright notice, this list of conditions and the
# following disclaimer.
# Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
# following disclaimer in the documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGE.
import sys
sys.path.append('..')
import canmatrix.formats
def createStoreMacro(signal, prefix="", frame="frame"):
startBit = signal.get_startbit(bit_numbering=1, start_little=1)
byteOrder = signal.is_little_endian
length = signal.size
startByte = int(startBit / 8)
startBitInByte = startBit % 8
currentTargetLength = (8 - startBitInByte)
mask = ((0xffffffffffffffff) >> (64 - length))
code = "#define storeSignal%s%s(value) do{" % (prefix, signal.name)
if signal.is_signed:
code += "value|=((value&0x8000000000000000)>>(64-length));"
code += "value&=0x%X;" % (mask)
code += "%s[%d]|=value<<%d;" % (frame, startByte, startBitInByte)
if byteOrder:
endByte = int((startBit + length) / 8)
for count in range(startByte + 1, endByte):
code += "%s[%d]|=value<<%d;" % (frame, count, currentTargetLength)
currentTargetLength += 8
else: # motorola / big-endian
endByte = int((startByte * 8 + 8 - startBitInByte - length) / 8)
for count in range(startByte - 1, endByte - 1, -1):
code += "%s[%d]|=value<<%d;" % (frame, count, currentTargetLength)
currentTargetLength += 8
code += "}while(0);\n"
return code
def createDecodeMacro(
signal, prefix="", macrosource="source", source="source"):
startBit = signal.get_startbit(bit_numbering=1, start_little=1)
byteOrder = signal.is_little_endian
length = signal.signalsize
mask = ((0xffffffffffffffff) >> (64 - length))
startByte = int(startBit / 8)
startBitInByte = startBit % 8
code = "#define get_signal%s%s(%s) ((((%s[%d])>>%d" % (
prefix, signal.name, macrosource, source, startByte, startBitInByte)
currentTargetLength = (8 - startBitInByte)
if byteOrder:
endByte = int((startBit + length) / 8)
if (startBit + length) % 8 == 0:
endByte -= 1
for count in range(startByte + 1, endByte + 1):
code += "|(%s[%d])<<%d" % (source, count, currentTargetLength)
currentTargetLength += 8
else: # motorola / big-endian
endByte = int((startByte * 8 + 8 - startBitInByte - length) / 8)
for count in range(startByte - 1, endByte - 1, -1):
code += "|%s[%d]<<%d" % (source, count, currentTargetLength)
currentTargetLength += 8
code += ")&0x%X)" % (mask)
if signal.is_signed:
msb_sign_mask = 1 << (length - 1)
code += "^0x%x)-0x%x " % (msb_sign_mask, msb_sign_mask)
else:
code += ")"
code += "\n"
return code
def createDecodeMacrosForFrame(
Frame, prefix="", macrosource="source", source="source"):
code = ""
for signal in Frame.signals:
code += createDecodeMacro(signal, prefix, macrosource, source)
return code
def createStoreMacrosForFrame(Frame, prefix="", framename="frame"):
code = ""
for signal in Frame.signals:
code += createStoreMacro(signal, prefix, frame=framename)
return code
def main():
from optparse import OptionParser
usage = """
%prog [options] canDatabaseFile targetFile.c
import-file: *.dbc|*.dbf|*.kcd|*.arxml|*.xls(x)|*.sym
"""
parser = OptionParser(usage=usage)
parser.add_option("", "--frame",
dest="exportframe", default=None,
help="create macros for Frame(s); Comma seperated list of Names ")
parser.add_option("", "--ecu",
dest="exportecu", default=None,
help="create macros for Ecu(s) Comma seperated ")
(cmdlineOptions, args) = parser.parse_args()
if len(args) < 2:
parser.print_help()
sys.exit(1)
infile = args[0]
outfile = args[1]
dbs = canmatrix.formats.loadp(infile)
db = next(iter(dbs.values()))
sourceCode = ""
if cmdlineOptions.exportframe is None and cmdlineOptions.exportecu is None:
for frame in db.frames:
sourceCode += createDecodeMacrosForFrame(
frame, "_" + frame.name + "_")
sourceCode += createStoreMacrosForFrame(
frame, "_" + frame.name + "_")
if cmdlineOptions.exportframe is not None:
for frameId in cmdlineOptions.exportframe.split(','):
try:
frame = db.frame_by_id(canmatrix.ArbitrationId(frameId))
except ValueError:
frame = db.frame_by_name(frameId)
if frame is not None:
sourceCode += createDecodeMacrosForFrame(
frame, "_" + frame.name + "_")
sourceCode += createStoreMacrosForFrame(
frame, "_" + frame.name + "_")
if cmdlineOptions.exportecu is not None:
ecuList = cmdlineOptions.exportecu.split(',')
for frame in db.frames:
for ecu in ecuList:
if ecu in frame.transmitters:
sourceCode += createStoreMacrosForFrame(
frame, "_" + frame.name + "_")
for signal in frame.signals:
if ecu in signal.receiver:
sourceCode += createDecodeMacro(signal,
"_" + frame.name + "_")
cfile = open(outfile, "w")
cfile.write(sourceCode)
cfile.close()
if __name__ == '__main__':
sys.exit(main())
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