1© 2016 The MathWorks, Inc.

Optimization and Implementation of

Embedded Signal Processing Algorithms

Jonas Rutström

Senior Application Engineer

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1. What’s your algorithm?

Two important questions in embedded design...

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2. What’s your target?

Two important questions in embedded design...

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Targets are very different...

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DSP MCU SoC/FPGA

The embedded hardware might be very different...

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Workflow | Idea to implementation

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Workflow | Idea to implementation

Prototyping

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Workflow | Idea to implementation

Prototyping

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Workflow | Idea to implementation

Prototyping Production

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Workflow | Idea to implementation

Prototyping Production

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Workflow | Idea to implementation

Prototyping Production

Optimization

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Let’s take a step back...

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What do we mean with optimization?

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Memory ReadabilitySpeed Target

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Memory ReadabilitySpeed Target

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Optimization at different phases in the development...

C SoC/FPGAPrototyping

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Optimization at different phases in the development...

C SoC/FPGAPrototyping

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Optimization at different phases in the development...

C SoC/FPGAPrototyping

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Optimization at different phases in the development...

Prototyping

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Profiling!

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Profiling in MATLAB

tic/toc

% start timer

tic

% execute code

out = myFunction(in);

% stop timer (and store

% elapsed time)

et = toc;

profile

% turn on profiler

profile on

% execute code

out = myFunction(in);

% turn off profiler

profile off

% open html report

profile report

Where are the bottlenecks?How long did it take?

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Profiling in MATLAB

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Profiling in Simulink

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Example(Profiling when prototyping in MATLAB)

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Optimization at different phases in the development...

C SoC/FPGAPrototyping

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Now, lets take a closer look of the

workflow in embedded design!

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Key Detection Algorithm

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System Design

Component Integration

Optimize

System Object

System Object(Reference Design)

ARM

FPGA

RF

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

Simulink

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DEMO(System Integration and Generating Code for ARM Cortex A9 from Simulink)

(Including verification with PIL)

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System Design

Component Integration

Optimize

System Object

System Object(Reference Design)

ARM

FPGA

RF

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A few words about Embedded Coder...

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Embedded Coder Quick Start

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DEMO(Embedded Coder Quick Start)

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Another use case...

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

MATLAB

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Example(Generating Code ARM Cortex A9 from MATLAB)

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System Design

Component Integration

Optimize

System Object

System Object(Reference Design)

ARM

FPGA

RF

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Example: Workflow for embedded design

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

Speed / Area Optimizations

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Area Optimization for FPGA implementation

ARM

FPGA

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Example(Area Optimization for FPGA Implementation)

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System Design

Component Integration

Optimize

System Object

System Object(Reference Design)

ARM

FPGA

RF

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Summary Optimization and Implementation of Embedded Signal Processing Algorithms

Reference Design

Constrained Design(E.g. Fixed-Point)

Target Specific Design

C(E.g. Fixed-Point)

Target Specific Design

SoC/FPGA(E.g. Fixed-Point)

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Questions?