Byte Reversal

R2026b

Reverse order of bytes in input word

Since R2024a

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Byte Reversal block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Motor Control Blockset / Signal Management

Description

The Byte Reversal block changes the order of the bytes in data that you input to the block. Use this block when a process communicates between target computers that use different endianness, such as between Intel^® processors that are little endian and other processors that are big endian. Texas Instruments^® processors are little-endian by default.

To exchange data between processors that have different endianness, place a Byte Reversal block just before the send block and immediately after the receive block.

This model shows byte reversal for three inputs. The input and output ports match for each path.

Ports

Input

Port_1 — Data to convert

scalar, vector, matrix

Data for which the block changes the byte ordering. The number of input ports used by the block depends on the value that you specify for the Number of inputs parameter.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | fixed point | enumerated | bus

Output

Port_1 — Converted data

scalar, vector, matrix

Data with modified byte ordering. The number of output ports used by the block depends on the value that you specify for the Number of inputs parameter. Each input port maps to the matching output port. Data received on input port 1 is sent through output port 1, and so on.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | fixed point | enumerated | bus

Parameters

Number of inputs — Number of block inputs

1 (default) | integer

Specify the number of block inputs. The block creates that number of input ports and output ports. Each input port maps to the matching output port. Data received on input Port_1 is sent through output Port_1, and so on.

Reversing the byte ordering does not change the data type. Input and output retain matching data types.

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"mcblib/Signal Management/Byte Reversal"

Example: add_block("mcblib/Signal Management/Byte Reversal","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

Introduced in R2024a