我在http://www.ross.net/crc/download/crc_v3.txt工作,并使用 16-bit polynomial 0x8005
。
我的信息是0xAE
。
该站点http://www.lammertbies.nl/comm/info/crc-calculation.html从我拥有的其他数据生成正确的计算。
这是我的代码的输出,描述了每个步骤。
Poly: 1010000000000001
Initial message: 01110101
Message: 011101010000000000000000 24
crcreg: 0000000000000000
crcreg: 0000000000000001
crcreg: 0000000000000011
crcreg: 0000000000000111
crcreg: 0000000000001110
crcreg: 0000000000011101
crcreg: 0000000000111010
crcreg: 0000000001110101
crcreg: 0000000011101010
crcreg: 0000000111010100
crcreg: 0000001110101000
crcreg: 0000011101010000
crcreg: 0000111010100000
crcreg: 0001110101000000
crcreg: 0011101010000000
crcreg: 0111010100000000
crcreg: 1110101000000000
crcreg: 1101010000000000 //Here we had a 1 pop off the shift reg, so we XOR in the poly.
^poly: 1010000000000001
=crcreg:0111010000000001
crcreg: 1110100000000010
crcreg: 1101000000000100
^poly: 1010000000000001
=crcreg:0111000000000101
crcreg: 1110000000001010
crcreg: 1100000000010100
^poly: 1010000000000001
=crcreg:0110000000010101
crcreg: 1100000000101010
crcreg: 1000000001010100
^poly: 1010000000000001
=crcreg:0010000001010101
CRC: 0010000001010101
4 aa
R-CRC: 1010101000000100 //Reversed, just in case MSB/LSB display got hosed.
55 20
预期的 CRC16 是0xBC81