def test_crcmod_c8d16_rev(self):
data = NumberMask(0xE3F2, 16)
inputPoly = NumberMask(0x1F0, 8)
regInit = 0x0
xorOut = 0x0
reverse = True
crc_func = crcmod.mkCrcFun(inputPoly.masterData(),
rev=reverse,
initCrc=regInit,
xorOut=xorOut)
crcLib = crc_func(data.toASCII())
# print "crc: {:X} {:X}".format( crc, crc2 )
crcProc = DivisionCRC()
crcProc.setReversed(reverse)
crcProc.setXorOutValue(xorOut)
crcProc.setRegisterInitValue(regInit)
data.reorderBytes()
inputPoly.reverse()
crc = crcProc.calculate3(data, inputPoly)
# print "values: {} poly:{:X} init:{:X} xorOut:{:08b} rev:{} crc:{:08b} crcmod:{:08b} crcxor:{:08b}".format( data, inputPoly, regInit, xorOut, reverse, crc, crcLib, crc^crcLib )
self.assertEqual(crc, crcLib)
def test_crcmod_c8d64_random(self):
data = NumberMask(random.randint(1, 0xFFFFFFFFFFFFFFFF), 64)
crcSize = 8
crcMax = 2**8 - 1
inputPoly = NumberMask(0x100 | random.randint(1, crcMax), crcSize)
## 'regInit' and 'xorOut' are not incompatible
regInit = 0x0
xorOut = 0x0
reverse = bool(random.randint(0, 1))
crc_func = crcmod.mkCrcFun(inputPoly.masterData(),
rev=reverse,
initCrc=regInit,
xorOut=xorOut)
crcLib = crc_func(data.toASCII())
# print "crc: {:X} {:X}".format( crc, crc2 )
crcProc = DivisionCRC()
crcProc.setReversed(reverse)
crcProc.setXorOutValue(xorOut)
crcProc.setRegisterInitValue(regInit)
# crcProc.setInitCRC( regInit )
if reverse:
data.reorderBytes()
inputPoly.reverse()
crc = crcProc.calculate3(data, inputPoly)
# print "values: {} poly:{:X} init:{:X} xorOut:{:08b} rev:{} crc:{:08b} crcmod:{:08b} crcxor:{:08b}".format( data, inputPoly, regInit, xorOut, reverse, crc, crcLib, crc^crcLib )
self.assertEqual(crc, crcLib)
def test_crcmod_8_random(self):
data = NumberMask(random.randint(1, 0xFFFFFFFFFFFFFFFF), 64)
crcSize = 8
crcMax = 2**crcSize - 1
inputPoly = NumberMask((0x1 << crcSize) | random.randint(1, crcMax),
crcSize)
# regInit = random.randint(0, crcMax)
# xorOut = random.randint(0, crcMax)
regInit = 0x0
xorOut = 0x0
reverse = bool(random.randint(0, 1))
crc_func = crcmod.mkCrcFun(inputPoly.masterData(),
rev=reverse,
initCrc=regInit,
xorOut=xorOut)
crcLib = crc_func(data.toASCII())
# print "crc: {:X} {:X}".format( crc, crc2 )
crcProc = ModCRC()
crcProc.setReversed(reverse)
crcProc.setXorOutValue(xorOut)
crcProc.setInitCRC(regInit, crcSize)
crc = crcProc.calculate3(data, inputPoly)
self.assertEqual(crc, crcLib)
def test_crcmod_8rohc(self):
data = NumberMask(0xF00F, 16)
inputPoly = NumberMask(0x107, 8)
regInit = 0xFF
xorOut = 0x0
crc_func = crcmod.predefined.mkCrcFun('crc-8-rohc') ## rev
crcLib = crc_func(data.toASCII())
crcProc = ModCRC()
crcProc.setReversed()
crcProc.setRegisterInitValue(regInit)
crcProc.setXorOutValue(xorOut)
crc = crcProc.calculate3(data, inputPoly)
# print "crcx: {:b} {:b}".format( crcLib, crc )
self.assertEqual(crc, crcLib)
def test_crcmod_8rev_init(self):
data = NumberMask(0xFF0F, 16)
inputPoly = NumberMask(0x181, 8)
regInit = 0x0F
xorOut = 0x0
crc_func = crcmod.mkCrcFun(inputPoly.masterData(),
initCrc=regInit,
rev=True,
xorOut=xorOut)
crcLib = crc_func(data.toASCII())
crcProc = ModCRC()
crcProc.setReversed()
crcProc.setRegisterInitValue(regInit)
crcProc.setXorOutValue(xorOut)
crc = crcProc.calculate3(data, inputPoly)
# print "crcx: {:b} {:b}".format( crc, crcLib )
self.assertEqual(crc, crcLib)
def test_crcmod_8darc(self):
data = NumberMask(0x01, 8)
inputPoly = NumberMask(0x139, 8)
regInit = 0x0
xorOut = 0x0
crc_func = crcmod.predefined.mkCrcFun('crc-8-darc')
crcLib = crc_func(data.toASCII())
crcProc = ModCRC()
crcProc.setReversed()
crcProc.setRegisterInitValue(regInit)
crcProc.setXorOutValue(xorOut)
revData = data.reorderedBytes()
crc = crcProc.calculate3(revData, inputPoly)
# print "crcx: {:b} {:b}".format( crc, crcLib )
self.assertEqual(crc, crcLib)
def test_crcmod_8rev_symm(self):
data = NumberMask(0xFF, 8)
inputPoly = NumberMask(0x181, 8) ## leave symmetric
regInit = 0x0
xorOut = 0x0
crc_func = crcmod.mkCrcFun(inputPoly.masterData(),
initCrc=regInit,
rev=True,
xorOut=xorOut)
crcLib = crc_func(data.toASCII())
crcProc = ModCRC()
crcProc.setReversed()
crcProc.setRegisterInitValue(regInit)
crcProc.setXorOutValue(xorOut)
revData = data.reorderedBytes()
revPoly = inputPoly.reversed()
crc = crcProc.calculate3(revData, revPoly)
# print "crcx: {:b} {:b}".format( crc, crcLib )
self.assertEqual(crc, crcLib)
def test_crcmod_c16d64_random(self):
data = NumberMask(random.randint(1, 0xFFFFFFFFFFFFFFFF), 64)
crcSize = 16
crcMax = 2**crcSize - 1
inputPoly = NumberMask((0x1 << crcSize) | random.randint(1, crcMax),
crcSize)
# regInit = random.randint(0, crcMax)
# xorOut = random.randint(0, crcMax)
regInit = 0x0
xorOut = 0x0
reverse = bool(random.randint(0, 1))
crc_func = crcmod.mkCrcFun(inputPoly.masterData(),
rev=reverse,
initCrc=regInit,
xorOut=xorOut)
crcLib = crc_func(data.toASCII())
# print "crc: {:X} {:X}".format( crc, crc2 )
crcProc = HwCRC()
crcProc.setReversed(reverse)
crcProc.setXorOutValue(xorOut)
if reverse:
data.reorderBytes()
inputPoly.reverse()
crcInit = reverse_number(regInit ^ xorOut, crcSize)
crcProc.setRegisterInitValue(crcInit)
else:
crcInit = regInit ^ xorOut
crcProc.setRegisterInitValue(crcInit)
crc = crcProc.calculate3(data, inputPoly)
# print "values: {} poly:{:X} init:{:X} xorOut:{:08b} rev:{} crc:{:08b} crcmod:{:08b} crcxor:{:08b}".format( data, inputPoly, regInit, xorOut, reverse, crc, crcLib, crc^crcLib )
self.assertEqual(crc, crcLib)
samples = int(args.samples)
preSize = int(args.preamblesize)
dataSize = int(args.datasize)
poly = int(args.poly, 16)
polySize = poly.bit_length()
initCrc = 0x0
xor = int(args.xor, 16)
rev = args.reversed
print "## call command: {}".format(' '.join(sys.argv[:]))
print "## pres:{} ds:{} poly:0x{:X} rev:{} initcrc:0x{:X} xor:0x{:X}".format(
preSize, dataSize, poly, rev, initCrc, xor)
crc_func = crcmod.mkCrcFun(poly, rev=rev, initCrc=initCrc, xorOut=xor)
preambleFormat = "{}"
dataFormat = "{:0" + str(dataSize / 4) + "X}"
polyFormat = "{:0" + str(polySize / 4) + "X}"
messageFormat = preambleFormat + dataFormat + " " + polyFormat
for _ in xrange(0, samples):
preamble = randomHexString(preSize)
data = randomHexString(dataSize)
messageNum = int(data, 16)
messageMask = NumberMask(messageNum, dataSize * 4)
polyCRC = crc_func(messageMask.toASCII())
print messageFormat.format(preamble, messageMask.dataNum, polyCRC)
finally:
pass
