LibCRC API Reference – crc_sick()

crc_sick( 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_sick() calculates a 16 bit CRC value of an input byte buffer based on the CRC calculation algorithm used by Sensor manufacturer Sick in some of their sensors. 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.

The CRC calculation used by Sick differs from generic CRC calculation algorithms in that every input byte is passed twice through the algorithm.

See Also