[Tutor] CRC calculation with python
cbc at unc.edu
Tue Feb 6 18:10:36 CET 2007
First, you need to find the preprocessor define for CCITT_POLY. The code
is incomplete without it.
Second, where did this code come from? It defines an unused local named
cval, which will usually cause at least a compilation warning.
This looks like a snippet, not a complete CCITT CRC calculation.
office: 332 Chapman Hall phone: (919) 962-4323
mail: Campus Box #3300, UNC-CH, Chapel Hill, NC 27599
Johan Geldenhuys wrote:
> Hi all,
> I'm not a C++ expert at all and I would like to find out if somebody can
> explain to me how the statement below can be done in Python?
> _uint16 ComCRC16(_uint8 val, _uint16 crc)
> _uint8 i;
> _uint16 cval;
> for (i=0;i<8;i++)
> if (((crc & 0x0001)^(val & 0x0001))!= 0) crc = (crc >> 1)^
> else crc >>= 1;
> val >>= 1;
> return crc
More information about the Tutor