Package org.yamcs.tctm

Class Iso16CrcCalculator

java.lang.Object

org.yamcs.tctm.Iso16CrcCalculator

All Implemented Interfaces:

ErrorDetectionWordCalculator

public class Iso16CrcCalculator
extends Object
implements ErrorDetectionWordCalculator

ISO CRC calculator as described in ECSS-E-ST-70-41C 15 April 2016, appendix B.2

It has been devised by John G. Fletcher.

Constructor Summary

Constructors

Constructor	Description
Iso16CrcCalculator()

Method Summary

Modifier and Type	Method	Description
int	compute(byte[] data, int offset, int length)	Compute the checksum on the data buffer starting at offset and taking into account length bytes
int	sizeInBits()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Iso16CrcCalculator

public Iso16CrcCalculator()

Method Details

compute

public int compute(byte[] data,
 int offset,
 int length)

Description copied from interface: ErrorDetectionWordCalculator

Compute the checksum on the data buffer starting at offset and taking into account length bytes

Specified by:

compute in interface ErrorDetectionWordCalculator

Returns:

sizeInBits

public int sizeInBits()

Specified by:

sizeInBits in interface ErrorDetectionWordCalculator

Returns:

size in bits of the calculated checksum (max 32)