LibCRC API Reference – crc_ccitt_1d0f()

crc_ccitt_1d0f( input_str, num_bytes );

Parameters

Parameter Type Description
input_str const unsigned char * The input byte buffer for which the CRC must be calculated
num_bytes size_t The number of characters in the input buffer

Return Value

Type Description
uint16_t The resulting CRC value

Description

The function crc_ccitt_1d0f() calculates a 16 bit CRC value of an input byte buffer based on the CRC calculation algorithm defined by the CCITT with start value 1D0F. The buffer length is provided as a parameter and the resulting CRC is returned as a return value by the function. The size of the buffer is limited to SIZE_MAX.

Some variations of the CCITT CRC calculations exist with different start values. These are available in the library as separate crc_ccitt_ffff() and crc_xmodem().

See Also