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Byte Unpack

Convert uint8 vector to input signals

  • Library:
  • Embedded Coder / Embedded Targets / Host Communication

  • Byte Unpack block

Description

The Byte Unpack block receives a uint8 vector and converts the vector to output signals of different Simulink® data types based on content of the input vector. You can use block parameters to specify dimensions and data types of the output signals and the alignment of the data in the individual vectors that the block outputs. Because the UDP protocol transmits data in uint8 format, you can use this block to reformat data that is received as a UDP packet for use in a model by connecting the input of this block to the output of a UDP Receive block.

Ports

Input

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Input vector of uint8.

Data Types: uint8

Output

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Array of input signals of one more data types.

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

Parameters

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Specify the dimensions of the output signals that the block outputs in a cell array. Each element in the array specifies the dimension that the MATLAB® size function returns for the corresponding signal. Specify dimensions that align with data converted by the corresponding Byte Pack block in the model.

For example, assume the corresponding Byte Pack block specifies these input port data types:

 {'uint32','uint32','uint16','double','uint8','double','single'}

To specify scalar and matrix output, you might set the Output port dimensions (cell array) parameter to:

 {1,1,[2,4],[4,4],[2,2],1,[3,3]}

To apply the same dimension across the output signals, you can specify one dimension value.

Specify the Simulink data types of the individual input signals received by the corresponding Byte Pack block in the model in a cell array.

For example, if the corresponding Byte Pack block specifies these input port data types, specify the same cell array for this parameter.

 {'uint32','uint32','uint16','double','uint8','double','single'}

To apply the same data type to each output signal, you need to specify the data type only once.

Specify how to align the data types of output data to form the uint8 vector input in bytes. Specify the alignment value that matches the value specified for the corresponding Byte Pack block in the model.

For example, if the corresponding Byte Pack block sets the byte alignment to 2, set this parameter to 2.

Introduced in R2011a