Package org.yamcs.tctm.ccsds.error

Class ProximityCrc32

java.lang.Object

org.yamcs.tctm.ccsds.error.ProximityCrc32

All Implemented Interfaces:

ErrorDetectionWordCalculator

public class ProximityCrc32
extends Object
implements ErrorDetectionWordCalculator

CRC-32 error detection code as specified in CCSDS 211.0-B-5 PROXIMITY-1 SPACE LINK PROTOCOL— DATA LINK LAYER

also used in USLP frames CCSDS 732.1-B-1

WARNING: we did not find an alternative implementation to compare with!

Constructor Summary

Constructors

Constructor	Description
ProximityCrc32()

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

ProximityCrc32

public ProximityCrc32()

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)