def test_crcmod_c8d16_revB(self):
data = NumberMask(0xE3F2, 16)
inputPoly = NumberMask(0x1F0, 8)
regInit = 0x0
xorOut = 0x0
reverse = True
revInputPoly = inputPoly.reversed()
revData = data.reorderedBytes()
crc_func = crcmod.mkCrcFun(revInputPoly.masterData(),
rev=reverse,
initCrc=regInit,
xorOut=xorOut)
crcLib = crc_func(revData.toASCII())
# print "crc: {:X} {:X}".format( crc, crc2 )
crcProc = DivisionCRC()
crcProc.setReversed(reverse)
crcProc.setXorOutValue(xorOut)
crcProc.setRegisterInitValue(regInit)
# crcProc.setInitCRC( regInit )
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_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_reorderedBytes_partialBytes(self):
data = NumberMask(0xABCDE, 20)
reordered = data.reorderedBytes()
self.assertEqual(reordered.dataSize, data.dataSize)
self.assertEqual(reordered.dataNum, 0xEBC0A)
def test_reorderedBytes_fullBytes(self):
data = NumberMask(0xABCDEF, 24)
reordered = data.reorderedBytes()
self.assertEqual(reordered.dataSize, data.dataSize)
self.assertEqual(reordered.dataNum, 0xEFCDAB)