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cyclic redundancy check
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents; on retrieval the calculation is repeated, and corrective action can be taken against presumed data corruption if the check values do not match.
[source:http://en.wikipedia.org/wiki/Cyclic_redundancy_check]
This class implements a basic CRC16 (17Bits) using polynomial 0x8005 (X^16 + X^15 + X^2 +1).
How to use this library
basic use of CRC 16t
char testdata[]= "123456789";
CRC16 *myCRC = new CRC16();
unsigned short resultCRC = myCRC->calculateCRC16(testdata,9); //9 is the length of the character array //
pc.printf("%x",resultCRC);