def test_hw_crc8_calculate_msb_xor(self):
data = 0x0D00C0F0FFFFFF
dataSize = 56
poly = 0x1D
xorOut = 0x8F
bytes_list = convert_to_msb_list(data, dataSize / 8)
calc_crc = hw_crc8_calculate(bytes_list, poly, 0x00, xorOut)
self.assertEqual(calc_crc, 0x90)
def test_hw_crc8_calculate_3_reverse(self):
data = 0x000300
dataSize = 24
poly = 0x1BF
poly = reverse_number(poly, 8)
bytes_list = convert_to_lsb_list(data, dataSize / 8)
calc_crc = hw_crc8_calculate(bytes_list, poly, 0x00, 0x00)
calc_crc = reverse_number(calc_crc, 8)
self.assertEqual(calc_crc, 0x50) ## 80
def test_hw_crc8_calculate_1_reverse(self):
data = 0x12
dataSize = 8
poly = 0xBF
poly = reverse_number(poly, 8)
bytes_list = convert_to_lsb_list(data, dataSize / 8)
calc_crc = hw_crc8_calculate(bytes_list, poly, 0x00, 0x00)
calc_crc = reverse_number(calc_crc, 8)
self.assertEqual(calc_crc, 0x3F) ## 63
def test_hw_crc8_calculate_msb(self):
data = 0x0D00C0F0FFFFFF
dataSize = 56
poly = 0x1D
xorOut = 0x00
## 0x0D -- 0b 0000 1101
## 0xB0 -- 0b 1011 0000
bytes_list = convert_to_msb_list(data, dataSize / 8)
self.assertEqual(bytes_list[0], 0x0D)
calc_crc = hw_crc8_calculate(bytes_list, poly, 0x00, xorOut)
self.assertEqual(calc_crc, 0x1F)
def test_hw_crc8_calculate_param_reflect(self):
data = 0x030201
dataSize = 24
poly = 0x1BF
msb_bytes_list = convert_to_msb_list(data, dataSize / 8)
param_crc = hw_crc8_calculate_param(msb_bytes_list, poly, 0x00,
0x00, False, True)
self.assertEqual(param_crc, 119)
## check relation
reflect_bits_list(msb_bytes_list)
calc_crc = hw_crc8_calculate(msb_bytes_list, poly, 0x00, 0x00)
self.assertEqual(param_crc, calc_crc)
def test_hw_crc8_calculate_param_reverse(self):
data = 0x030201
dataSize = 24
poly = 0x1BF
msb_bytes_list = convert_to_msb_list(data, dataSize / 8)
param_crc = hw_crc8_calculate_param(msb_bytes_list, poly, 0x00,
0x00, True, False)
self.assertEqual(param_crc, 68)
## check relation
msb_bytes_list.reverse()
calc_crc = hw_crc8_calculate(msb_bytes_list, poly, 0x00, 0x00)
self.assertEqual(param_crc, calc_crc)
def test_hw_crc8_calculate(self):
bytes_list = [0xFF, 0xFF, 0xFF, 0xFF]
crc = hw_crc8_calculate(bytes_list, 0xFF, 0x00, 0x00)
self.assertEqual(crc, 240)