org.opengts.util
Class Checksum

java.lang.Object
  org.opengts.util.Checksum

public class Checksum
extends java.lang.Object

Checksum tools

Nested Class Summary

static class

Checksum.CRC

Constructor Summary

Checksum()

Method Summary

static long	calcChecksum(Checksum.CRC crc, byte[] b, int bOfs, int bLen) Returns checksum based on specified algorithm
static int	calcCrc16_1(byte[] b)
static int	calcCrc16_1(byte[] b, int bOfs, int bLen)
static int	calcCrc16_modbus(byte[] b)
static int	calcCrc16_modbus(byte[] b, int bOfs, int bLen)
static int	calcCrc16(byte[] b)
static int	calcCrc16(byte[] b, int bOfs, int bLen)
static long	calcCrc32(byte[] b)
static long	calcCrc32(byte[] b, int bOfs, int bLen)
static int	calcCrcCCITT_1D0F(byte[] b)
static int	calcCrcCCITT_1D0F(byte[] b, int bLen)
static int	calcCrcCCITT_1D0F(byte[] b, int bOfs, int bLen)
static int	calcCrcCCITT(byte[] b)
static int	calcCrcCCITT(byte[] b, int bLen)
static int	calcCrcCCITT(byte[] b, int bOfs, int bLen)
static byte	calcCrcSum8(byte[] b)
static byte	calcCrcSum8(byte[] b, int bOfs, int bLen)
static int	calcCrcXmodem(byte[] b)
static int	calcCrcXmodem(byte[] b, int bLen)
static int	calcCrcXmodem(byte[] b, int bOfs, int bLen)
static byte	calcCrcXOR8(byte[] b)
static byte	calcCrcXOR8(byte[] b, int bOfs, int bLen)
static void	main(java.lang.String[] args)
static byte	TwosCompliment(byte b)

Methods inherited from class java.lang.Object

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

Constructor Detail

Checksum

public Checksum()

Method Detail

TwosCompliment

public static byte TwosCompliment(byte b)

calcChecksum

public static long calcChecksum(Checksum.CRC crc,
                                byte[] b,
                                int bOfs,
                                int bLen)

Returns checksum based on specified algorithm

Parameters:

crc - The CRC algorithm

b - The byte array

bOfs - The offset into the byte array to begin CRC

bLen - The number of bytes to include in the CRC

calcCrcCCITT

public static int calcCrcCCITT(byte[] b)

calcCrcCCITT

public static int calcCrcCCITT(byte[] b,
                               int bLen)

calcCrcCCITT

public static int calcCrcCCITT(byte[] b,
                               int bOfs,
                               int bLen)

calcCrcXmodem

public static int calcCrcXmodem(byte[] b)

calcCrcXmodem

public static int calcCrcXmodem(byte[] b,
                                int bLen)

calcCrcXmodem

public static int calcCrcXmodem(byte[] b,
                                int bOfs,
                                int bLen)

calcCrcCCITT_1D0F

public static int calcCrcCCITT_1D0F(byte[] b)

calcCrcCCITT_1D0F

public static int calcCrcCCITT_1D0F(byte[] b,
                                    int bLen)

calcCrcCCITT_1D0F

public static int calcCrcCCITT_1D0F(byte[] b,
                                    int bOfs,
                                    int bLen)

calcCrc16

public static int calcCrc16(byte[] b)

calcCrc16

public static int calcCrc16(byte[] b,
                            int bOfs,
                            int bLen)

calcCrc16_modbus

public static int calcCrc16_modbus(byte[] b)

calcCrc16_modbus

public static int calcCrc16_modbus(byte[] b,
                                   int bOfs,
                                   int bLen)

calcCrc16_1

public static int calcCrc16_1(byte[] b)

calcCrc16_1

public static int calcCrc16_1(byte[] b,
                              int bOfs,
                              int bLen)

calcCrc32

public static long calcCrc32(byte[] b)

calcCrc32

public static long calcCrc32(byte[] b,
                             int bOfs,
                             int bLen)

calcCrcXOR8

public static byte calcCrcXOR8(byte[] b)

calcCrcXOR8

public static byte calcCrcXOR8(byte[] b,
                               int bOfs,
                               int bLen)

calcCrcSum8

public static byte calcCrcSum8(byte[] b)

calcCrcSum8

public static byte calcCrcSum8(byte[] b,
                               int bOfs,
                               int bLen)

main

public static void main(java.lang.String[] args)