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_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_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(self):
bytes_list = [ 0xFF, 0xFF, 0xFF, 0xFF ]
crc = hw_crc8_calculate( bytes_list, 0xFF, 0x00, 0x00 )
self.assertEqual( crc, 240 )