Hello CRC Wizards, I am trying to use ../linux-2.6.12/lib/crc_citt in a driver. Basically, it doesn't return anything that closely resembles the CCIT-16 CRC. I note that drivers that use it expect it to return 0xf0b8 if it performs the CRC of something that has the CRC appended (weird).
Does anybody know what the CRC of a known string is supposed to be? I have documentation that states that the CCITT CRC-16 of "123456789" is supposed to be 0xe5cc and "A" is supposed to be 0x9479. The kernel one doesn't do this. In fact, I haven't found anything on the net that returns the "correct" value regardless of how it's initialized or how it's mucked with after the CRC (well I could just set the CRC to 0 and add the correct number). Anyway, how do I use the crc_citt in the kernel? I've grepped through some drivers that use it and they all seem to check the result against some magic rather than performing the CRC of data, but not the CRC, then comparing it to the CRC. One should not have to use magic to verify a CRC, one should just perform a CRC on the data, but not the CRC, then compare the result with the CRC. Am I missing something here? Cheers, Dick Johnson Penguin : Linux version 2.6.12 on an i686 machine (5537.79 BogoMips). Warning : 98.36% of all statistics are fiction. . I apologize for the following. I tried to kill it with the above dot : **************************************************************** The information transmitted in this message is confidential and may be privileged. Any review, retransmission, dissemination, or other use of this information by persons or entities other than the intended recipient is prohibited. If you are not the intended recipient, please notify Analogic Corporation immediately - by replying to this message or by sending an email to [EMAIL PROTECTED] - and destroy all copies of this information, including any attachments, without reading or disclosing them. Thank you. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
