com.neovisionaries.bluetooth.ble.util

Class Bytes

java.lang.Object

com.neovisionaries.bluetooth.ble.util.Bytes

public class Bytes
extends Object

Utility for byte arrays.

Since:

1.5

Method Summary

Modifier and Type	Method and Description
static float	convertFixedPointToFloat(byte[] data, int offset) Convert 2 bytes in fixed point format to float.
static byte[]	copyOfRange(byte[] source, int from, int to) Copy a range of a given byte array.
static int	parseBE2BytesAsInt(byte[] data, int offset) Parse 2 bytes in big endian byte order as an int.
static int	parseBE4BytesAsInt(byte[] data, int offset) Parse 4 bytes in big endian byte order as an int.
static long	parseBE4BytesAsUnsigned(byte[] data, int offset) Parse 4 bytes in big endian byte order as an unsigned integer.
static String	toHexString(byte[] data, boolean upper) Convert a byte array to a hex string.

Methods inherited from class java.lang.Object

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

Method Detail

parseBE2BytesAsInt

public static int parseBE2BytesAsInt(byte[] data,
                                     int offset)

Parse 2 bytes in big endian byte order as an int.

parseBE4BytesAsInt

public static int parseBE4BytesAsInt(byte[] data,
                                     int offset)

Parse 4 bytes in big endian byte order as an int.

parseBE4BytesAsUnsigned

public static long parseBE4BytesAsUnsigned(byte[] data,
                                           int offset)

Parse 4 bytes in big endian byte order as an unsigned integer.

convertFixedPointToFloat

public static float convertFixedPointToFloat(byte[] data,
                                             int offset)

Convert 2 bytes in fixed point format to float.

See Also:

Cornell University, Electrical Engineering 476, Fixed Point mathematical functions in GCC and assembler

toHexString

public static String toHexString(byte[] data,
                                 boolean upper)

Convert a byte array to a hex string.

Parameters:

data - An input byte array.

upper - true to generate a upper-case hex string. false to generate a lower-case hex string.

Returns:

A hex string. if data is null, null is returned.

copyOfRange

public static byte[] copyOfRange(byte[] source,
                                 int from,
                                 int to)

Copy a range of a given byte array.

Parameters:

source - A source byte array.

from - The start index of the range in the source byte array (inclusive).

to - The end index of the range in the source byte array (exclusive).

Returns:

A copied byte array. null is returned if (1) source is null, (2) from is negative, (3) to is negative, (4) the copy length (to - from) is negative, or (5) from + the copy length exceeds source.length.

Since:

1.8