User-DefinedMATLABFunctions

Create HDL-ready algorithms using blocks in User-Defined Functions library

The HDL Coder block library contains many blocks that you can add to your develop your Simulink^®modeling environment and develop your HDL algorithm. You can also integrate your HDL algorithm that contains MATLAB^®code in the Simulink environment by using theMATLAB FunctionandMATLAB Systemblocks in the User-Defined Functions library.

To filter the Simulink Library Browser to show only HDL-supported blocks, enterhdllib.

Functions

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System Objects

`hdl.RAM`	Single, simple dual, or dual-port RAM for memory read/write access
`hdl.BlackBox`	Black box for including custom HDL code

Supported Block Library

hdllib Display blocks that are compatible with HDL code generation

HDL Optimized Arithmetic Operations

`hdl.treesum`	Sum of array elements using tree architecture
`hdl.treeprod`	Product of array elements using tree architecture

Model Checks

Check for MATLAB Function block settings

Model Settings

RTL Customization Parameters for Constants and MATLAB Function Blocks

Topics

Modeling MATLAB Functions

MATLAB Function Block Design Patterns for HDL
Design patterns that will help you to use advancedMATLAB Functionblock features.
Design Guidelines for the MATLAB Function Block
Recommended option settings and procedures forMATLAB Functionblocks for optimal HDL code generation.
HDL Applications for the MATLAB Function Block
TheMATLAB Functionblock and its application in HDL code generation.

Generate HDL Code from MATLAB Functions

Code Generation from a MATLAB Function Block
Step-by-step tutorial shows how to incorporate aMATLAB Functionblock into your model for code generation.
Generate Instantiable Code for Functions
Generate Verilog^®module or VHDL^®entity in HDL code for functions.
Viterbi Decoder with the MATLAB Function Block
hdlcoderviterbi2models a Viterbi decoder, incorporating aMATLAB Functionblock for use in simulation and HDL code generation.
Bitwise Operations in MATLAB for HDL and SystemC Code Generation
HDL Coder™ supports bit shift, bit rotate, bit slice operations that mimic HDL-specific and SystemC-specific operators without saturation and rounding logic.

Related Information

硬件与MATLAB代码建模

Troubleshooting

Initialize Persistent Variables in MATLAB Functions

Specialized semantics impact the way that a function initializes persistent data.

Featured Examples

CORDIC Algorithm Using the MATLAB Function Block

Use HDL Coder to check, generate and verify HDL for a fixed-point CORDIC model implementing sin and cos trigonometric functions using the MATLAB Function Block.

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Hardware Design Patterns Using the MATLAB Function Block

Effectively use the MATLAB Function block to model commonly used hardware algorithms using HDL Coder™. An HDL design patterns library is used to show the features of MATLAB Coder supported by HDL Coder.

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System Design with HDL Code Generation from MATLAB and Simulink

Generate a MATLAB Function block from a MATLAB® design for system simulation, code generation, and FPGA programming in Simulink®.

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HDL Code Generation for Streaming Matrix Multiply System Object

How HDL Coder™ implements a streaming mode of matrix multiplication with configurable sizes.

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HDL Code Generation for Streaming Matrix Inverse System Object

How HDL Coder™ implements a streaming mode of matrix inverse operation with configurable sizes.

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