Bit Packing

Construct data frames

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Libraries:
Simulink Real-Time / Utilities

Description

The Bit Packing block constructs data frames. Its output port is typically connected to an input port of a Send block or Digital Output block. The block has one output port. This port can be a vector of arbitrary size. It represents the data frame entity constructed by the signals entering the block at its input ports. The number of input ports depends on the setting in the block dialog box.

Examples

Simple ASCII Encoding/Decoding Loopback Test (with Baseboard Blocks)

Convert a single floating point number to ASCII and transmit the value over a serial link.

• Open Script

ASCII Encoding/Decoding Loopback Test

Send ASCII data over a serial link.

• Open Script

ASCII Encoding/Decoding Loopback Test (with Baseboard Blocks)

Send ASCII data over a serial link.

• Open Model

ASCII Encoding/Decoding Resync Loopback Test

Use the ability of the FIFO Read HDRS block to resynchronize after being repeatedly disabled and apply this ability to resolve errors such as when a message is only partially complete at the time the read is attempted.

• Open Script

ASCII Encoding/Decoding Resync Loopback Test (with Baseboard Blocks)

Use the ability of the FIFO Read HDRS block to resynchronize after being repeatedly disabled and apply this ability to resolve errors such as when a message is only partially complete at the time the read is attempted.

• Open Script

Binary Encoding/Decoding Loopback Test

Send Binary data over a serial link.

• Open Script

Binary Encoding/Decoding Loopback Test (with Baseboard Blocks)

Send Binary data over a serial link.

• Open Script

Binary Encoding/Decoding Resync Loopback Test

Use the ability of the FIFO Read BINARY block to handle messages that are interrupted and only partially complete.

• Open Script

Binary Encoding/Decoding Resync Loopback Test (with Baseboard Blocks)

Use the ability of the FIFO Read BINARY block to handle messages that are interrupted and only partially complete.

• Open Script

Parameters

Bit Patterns — Packed data bit pattern

{[0:31]} (default)

Specify bit patterns. The data type entered in the control must be a MATLAB^® cell array vector. The number of elements in the cell array define the number of input ports shown by this block instance. The cell array elements must be of type double array and define the position of each bit of the incoming value (data typed input port) in the outgoing double value (data frame). From a data type perspective (input ports), the block behaves like a Simulink^® Sink block. The data types of the input ports are inherited from the driving blocks.

Programmatic Use

Block Parameter: BitPatterns

Output port (packed) data type — Packed data type

uint32 (default) | double | single | int8 | uint8 | int16 | uint16 | int32 | boolean

From the list, select an output port (packed) data type.

Programmatic Use

Block Parameter: PackDataType

Output port (packed) dimensions — Packed data dimensions

[1] (default)

Specify the dimensions the output port (packed). Enter this value as a vector. Specify the size of the port by using a format compatible with the MATLAB size command.

Programmatic Use

Block Parameter: PackDataSize

Extended Capabilities

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

Version History

Introduced in R2006a