Example #1
0
    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)
Example #2
0
    def test_crcmod_8_xorOut(self):
        data = 0xF0
        dataSize = 8
        inputPoly = 0x100
        crcSize = 8
        regInit = 0x0F
        xorOut = 0xF0

        crc_func = crcmod.mkCrcFun(inputPoly,
                                   initCrc=regInit,
                                   rev=False,
                                   xorOut=xorOut)
        crcLib = crc_func(intToASCII(data))

        crcProc = ModCRC()
        crcProc.setXorOutValue(xorOut)
        crcProc.setInitCRC(regInit, crcSize)

        crc = crcProc.calculate2(data, dataSize, inputPoly, crcSize)
        #         print "crc: 0x{0:X}[0b{0:b}] 0x{1:X}[0b{1:b}]".format( crc, crcLib )
        self.assertEqual(crc, crcLib)