Agenda

Agenda

T

T

H E

H E

W

W

O R L D

O R L D

L

L

E A D E R I N

E A D E R I N

D

D

S

S

P

P

S

S

O L U T I O N S

O L U T I O N S



Overview

Overview

Hello, TI DSP, ‘C6000

Hello, TI DSP, ‘C6000



DSK

DSK

Tour of ‘C6711 DSK

Tour of ‘C6711 DSK



C Code

C Code

Code Composer Studio

Code Composer Studio



System

System





McBSP, Interrupts

McBSP, Interrupts





EDMA, Cache

EDMA, Cache



DSP/BIOS

DSP/BIOS

Real-Time Tools

Real-Time Tools



VAB

VAB

Visual Design

Visual Design



Epilogue

Epilogue

What Next?

What Next?

Programming the ‘C6000

Programming the ‘C6000

* Typical efficiency vs. hand optimized assembly

* Typical efficiency vs. hand optimized assembly

Source

Source

Efficiency*

Efficiency*

Effort

Effort

80 - 100%

80 - 100%

C

C

C ++

C ++

Compiler

Compiler

Optimizer

Optimizer

Low

Low

95 - 100%

95 - 100%

Linear

Linear

ASM

ASM

Assembly

Assembly

Optimizer

Optimizer

Med

Med

100%

100%

High

High

ASM

ASM

Hand

Hand

Optimize

Optimize

Sample Compiler Benchmarks

Sample Compiler Benchmarks

TI C62x™ Compiler Performance Release 4.0: Execution Time in

TI C62x™ Compiler Performance Release 4.0: Execution Time in





s @

s @

300 MHz Versus hand-coded assembly based on cycle count

300 MHz Versus hand-coded assembly based on cycle count

Algorithm

Algorithm

Used In

Asm

Cycles

Assembly

Time (s)

C Cycles

(Rel

4.0)

C Time

(s)

%

Efficiency

vs

Hand

Coded

Block Mean Square

Error

MSE of a 20 column

image matrix

For motion

compensatio

n of image

data

348

1.16

402

1.34

87%

87%

Codebook Search

CELP based

voice coders

977

3.26

961

3.20

100%

100%

Vector Max

40 element input

vector

Search

Algorithms

61

0.20

59

0.20

100%

100%

All-zero FIR Filter

40 samples,

10 coefficients

VSELP based

voice coders

238

0.79

280

0.93

85%

85%

Minimum Error

Search

Table Size = 2304

Search

Algorithms

1185

3.95

1318

4.39

90%

90%

IIR Filter

16 coefficients

Filter

43

0.14

38

0.13

100%

100%

IIR – cascaded

biquads

10 Cascaded biquads

(Direct Form II)

Filter

70

0.23

75

0.25

93%

93%

MAC

Two 40 sample

vectors

VSELP based

voice coders

61

0.20

58

0.19

100%

100%

Vector Sum

Two 44 sample

vectors

51

0.17

47

0.16

100%

100%

MSE

MSE between two

256 element vectors

Mean Sq.

Error

Computation

in Vector

Quantizer

279

0.93

274

0.91

100%

100%



Great out-of-box experience

Great out-of-box experience



Completely natural C code (non ’C6000 specific)

Completely natural C code (non ’C6000 specific)



Code available at:

Code available at:

http://www.ti.com/sc/c6000compiler

http://www.ti.com/sc/c6000compiler



Great out-of-box experience

Great out-of-box experience



Completely natural C code (non ’C6000 specific)

Completely natural C code (non ’C6000 specific)



Code available at:

Code available at:

http://www.ti.com/sc/c6000compiler

http://www.ti.com/sc/c6000compiler

Outline

Outline



Programming Methods

Programming Methods



Code Composer Studio (CCS)

Code Composer Studio (CCS)



Projects

Projects



Working with C

Working with C

Code Composer Studio

Code Composer Studio

Code Composer Studio Includes:

Code Composer Studio Includes:



Integrated Edit / Debug GUI

Integrated Edit / Debug GUI



Simulator

Simulator

*

*

3

rd

P

a

rt

y

P

LU

G

I

N

S

3

rd

P

a

rt

y

P

LU

G

I

N

S

Edit

Edit

SIM

SIM

Compiler

Compiler

Asm Opt

Asm Opt

Asm

Asm

DSK

DSK

EVM

EVM

Third

Third

Party

Party

Stand

Stand

ard

ard

Runti

Runti

me

me

Librari

Librari

es

es



Code Generation Tools

Code Generation Tools



BIOS:

BIOS:

Real-time kernel

Real-time kernel

Real-time analysis

Real-time analysis



Plug-ins

Plug-ins





RTDX

RTDX

DSP/BIOS

DSP/BIOS

Libraries

Libraries

DSP/BIOS

DSP/BIOS

Config

Config

Tool

Tool

Debug

Debug

.out

.out

Link

Link

* Simulator not included with DSK, only with full version of CCS.

* Simulator not included with DSK, only with full version of CCS.

Outline

Outline



Programming Methods

Programming Methods



Code Composer Studio (CCS)

Code Composer Studio (CCS)



Projects

Projects



Define

Define

and

and

Manage

Manage



Build Options

Build Options

and

and

Build

Build

Configurations

Configurations



Config Tool

Config Tool

(CDB file)

(CDB file)



Working with C

Working with C

What is a Project?

What is a Project?

Project (

Project (

.PJT

.PJT

) file

) file

contains

contains

Project files (

Project files (

by

by

reference

reference

):

):



Source

Source



Libraries

Libraries



Linker, etc …

Linker, etc …

Project settings:

Project settings:



Build configurations

Build configurations

(compiler, asm

(compiler, asm

options)

options)



DSP/BIOS

DSP/BIOS



Linking, etc …

Linking, etc …

Project Menu

Project Menu



Create new

Create new

projects

projects



Open projects

Open projects



Manage projects

Manage projects

Project Menu

Project Menu



Add files… to

Add files… to

project

project

Add drag-n-drop files

Add drag-n-drop files

onto .PJT

onto .PJT



Export Makefile

Export Makefile

New

New

Export project

Export project

details

details

to a standard

to a standard

.mak file

.mak file



Set as Active

Set as Active

Project

Project

New

New

Keep multiple

Keep multiple

projects open

projects open



Open for Editing

Open for Editing

New

New

Opens PJT with

Opens PJT with

text editor

text editor



Configurations…

Configurations…

New

New

Keep multiple sets

Keep multiple sets

of build options

of build options



Options…

Options…

Set build options

Set build options

Right-Click

Right-Click

Menu

Menu

Outline

Outline



Programming Methods

Programming Methods



Code Composer Studio (CCS)

Code Composer Studio (CCS)



Projects

Projects



Define and Manage

Define and Manage



Build Options

Build Options

and

and

Build

Build

Configurations

Configurations



Common compiler options and default

Common compiler options and default

configurations

configurations



Build Options GUI

Build Options GUI



Linker Options

Linker Options



Config Tool (CDB file)

Config Tool (CDB file)



Working with C

Working with C



Nearly one-hundred compiler options

Nearly one-hundred compiler options

available to tune your code's performance,

available to tune your code's performance,

size, etc.

size, etc.



Following table lists most commonly used

Following table lists most commonly used

options:

options:

Compiler Build Options

Compiler Build Options

Options

Options

Description

Description

-mv6700

-mv6700

Generate ‘C67x code (‘C62x is default)

Generate ‘C67x code (‘C62x is default)

-mv6400

-mv6400

Generate 'C64x code

Generate 'C64x code

-fr <dir>

-fr <dir>

Directory for object/ouput files

Directory for object/ouput files

-q

-q

Quiet mode (display less info while

Quiet mode (display less info while

compiling)

compiling)

-g

-g

Enables src-level symbolic debugging

Enables src-level symbolic debugging

-s

-s

Interlist C statements into assembly listing

Interlist C statements into assembly listing

-o3

-o3

Invoke optimizer (-o0, -o1, -o2/-o, -o3)

Invoke optimizer (-o0, -o1, -o2/-o, -o3)

-gp

-gp

Enable function-level profiling

Enable function-level profiling

-k

-k

Keep asm files, but don't interlist

Keep asm files, but don't interlist

debug

debug

optimize

optimize

(release)

(release)

To make options easier, TI recommends using …

To make options easier, TI recommends using …

Two Default Build Configurations

Two Default Build Configurations



For new projects, CCS

For new projects, CCS

automatically creates

automatically creates

two build

two build

configurations:

configurations:



Debug

Debug

(

(

unoptimized

unoptimized

)

)



Release

Release

(optimized)

(optimized)

-g -q -fr"c:\modem\

-g -q -fr"c:\modem\Debug

Debug

"

" -d"_DEBUG"

-d"_DEBUG"

-mv6700

-mv6700

-q

-q -o3

-o3

-fr"c:\modem\

-fr"c:\modem\Release

Release

" -mv6700

" -mv6700

Two Default Build Configurations

Two Default Build Configurations



For new projects, CCS

For new projects, CCS

automatically creates

automatically creates

two build

two build

configurations:

configurations:



Debug

Debug

(

(

unoptimized

unoptimized

)

)



Release

Release

(optimized)

(optimized)



Use the drop-down to

Use the drop-down to

quickly select

quickly select

build

build

config.

config.

-g -q -fr"c:\modem\

-g -q -fr"c:\modem\Debug

Debug

"

" -d"_DEBUG"

-d"_DEBUG"

-mv6700

-mv6700

-q

-q -o3

-o3

-fr"c:\modem\

-fr"c:\modem\Release

Release

" -mv6700

" -mv6700

Two Default Build Configurations

Two Default Build Configurations



For new projects, CCS

For new projects, CCS

automatically creates

automatically creates

two build

two build

configurations:

configurations:



Debug

Debug

(

(

unoptimized

unoptimized

)

)



Release

Release

(optimized)

(optimized)



Use the drop-down to

Use the drop-down to

quickly select

quickly select

build

build

config.

config.



Add/Remove build

Add/Remove build

config's with

config's with

Project

Project

Configurations

Configurations

dialog

dialog

(on project menus)

(on project menus)

-g -q -fr"c:\modem\

-g -q -fr"c:\modem\Debug

Debug

"

" -d"_DEBUG"

-d"_DEBUG"

-mv6700

-mv6700

-q

-q -o3

-o3

-fr"c:\modem\

-fr"c:\modem\Release

Release

" -mv6700

" -mv6700

Two Default Build Configurations

Two Default Build Configurations



For new projects, CCS

For new projects, CCS

automatically creates

automatically creates

two build

two build

configurations:

configurations:



Debug

Debug

(

(

unoptimized

unoptimized

)

)



Release

Release

(optimized)

(optimized)



Use the drop-down to

Use the drop-down to

quickly select

quickly select

build

build

config.

config.



Add/Remove build

Add/Remove build

config's with

config's with

Project

Project

Configurations

Configurations

dialog

dialog

(on project menus)

(on project menus)



Edit a configuration:

Edit a configuration:

1.

1.

Set it active

Set it active

2.

2.

Modify build

Modify build

options (shown

options (shown

next)

next)

3.

3.

Save project

Save project

-g -q -fr"c:\modem\

-g -q -fr"c:\modem\Debug

Debug

"

" -d"_DEBUG"

-d"_DEBUG"

-mv6700

-mv6700

-q

-q -o3

-o3

-fr"c:\modem\

-fr"c:\modem\Release

Release

" -mv6700

" -mv6700

-g

-g

-q -fr

-q -fr

"c:\modem\Debug"

"c:\modem\Debug"

-d

-d

"_DEBUG"

"_DEBUG"

-mv6700

-mv6700

Build Options GUI (Debug)

Build Options GUI (Debug)



GUI has 8 pages

GUI has 8 pages

of options for

of options for

code generation

code generation

tools

tools



Default build

Default build

options for a new

options for a new

project are

project are

shown

shown



Basic

Basic

page

page

defaults are

defaults are

-g

-g

-mv6700

-mv6700

-g -q -fr

-g -q -fr

"c:\modem\Debug"

"c:\modem\Debug" -d

-d

"_DEBUG"

"_DEBUG"

-mv6700

-mv6700

Build Options GUI (Debug)

Build Options GUI (Debug)



Preprocessor

Preprocessor

page

page



-d

-d

option allows

option allows

symbols to be

symbols to be

defined

defined



_DEBUG

_DEBUG

used by

used by

CCS enviroment

CCS enviroment

during debug

during debug

Options

Options

Description

Description

-o<filename>

-o<filename>

Output file name

Output file name

-m<filename>

-m<filename>

Map file name

Map file name

-c

-c

Auto-initialize global/static C

Auto-initialize global/static C

variables

variables

-x

-x

Exhaustively read libs (resolve back

Exhaustively read libs (resolve back

ref's)

ref's)

Linker Options

Linker Options

-q

-q -c

-c

-o".\Debug\lab3.out"

-o".\Debug\lab3.out"

-x

-x

.\Debug\lab3.out

.\Debug\lab3.out

Run-time Autoinitialization

Run-time Autoinitialization



Like Compiler

Like Compiler

Options,

Options,

Build

Build

Configurations

Configurations

also contain

also contain

Linker Options

Linker Options



Default linker

Default linker

options are

options are

shown for the

shown for the

Debug

Debug

configuration of a

configuration of a

project name

project name

lab3.pjt

lab3.pjt



".\Debug\"

".\Debug\"

indicates one

indicates one

subfolder level

subfolder level

below project

below project

(.pjt) location

(.pjt) location



Linking discussed

Linking discussed

in detail during

in detail during

four-day

four-day

workshop

workshop

Outline

Outline



Programming Methods

Programming Methods



Code Composer Studio (CCS)

Code Composer Studio (CCS)



Projects

Projects



Define and Manage

Define and Manage



Build Options and Build

Build Options and Build

Configurations

Configurations



Config Tool

Config Tool

(CDB file)

(CDB file)



Where To Go for More C

Where To Go for More C

Information

Information

Configuration Tool

Configuration Tool



Simplifies system design

Simplifies system design



Automatically includes the

Automatically includes the

appropriate runtime support

appropriate runtime support

libraries

libraries



Automatically handles interrupt

Automatically handles interrupt

vectors and system reset

vectors and system reset



MEM handles system memory

MEM handles system memory

configuration (builds CMD file)

configuration (builds CMD file)



Many other capabilities will be

Many other capabilities will be

discussed later …

discussed later …



Simplifies system design

Simplifies system design



Automatically includes the

Automatically includes the

appropriate runtime support

appropriate runtime support

libraries

libraries



Automatically handles interrupt

Automatically handles interrupt

vectors and system reset

vectors and system reset



MEM handles system memory

MEM handles system memory

configuration (builds CMD file)

configuration (builds CMD file)



Many other capabilities will be

Many other capabilities will be

discussed later …

discussed later …

Outline

Outline



Programming Methods

Programming Methods



Code Composer Studio (CCS)

Code Composer Studio (CCS)



Projects

Projects



Working with C

Working with C

‘

‘

C6000 C Data Types

C6000 C Data Types

Type

Type

Size

Size

Representation

Representation

char, signed char

char, signed char

8 bits

8 bits

ASCII

ASCII

unsigned char

unsigned char

8 bits

8 bits

ASCII

ASCII

short

short

16 bits

16 bits

2’s complement

2’s complement

unsigned short

unsigned short

16 bits

16 bits

binary

binary

int, signed int

int, signed int

32 bits

32 bits

2s complement

2s complement

unsigned int

unsigned int

32 bits

32 bits

binary

binary

long, signed long

long, signed long

40 bits

40 bits

2’s complement

2’s complement

unsigned long

unsigned long

40 bits

40 bits

binary

binary

enum

enum

32 bits

32 bits

2’s complement

2’s complement

float

float

32 bits

32 bits

IEEE 32-bit

IEEE 32-bit

double

double

64 bits

64 bits

IEEE 64-bit

IEEE 64-bit

long double

long double

64 bits

64 bits

IEEE 64-bit

IEEE 64-bit

pointers

pointers

32 bits

32 bits

binary

binary

Optimizing C Performance

Optimizing C Performance



Compiler Tutorial in CCS online help

Compiler Tutorial in CCS online help

http://www.ti.com/sc/c6000compiler

http://www.ti.com/sc/c6000compiler



C6000 Programmer’s Guide

C6000 Programmer’s Guide

(SPRU198)

(SPRU198)

Chapter 4:

Chapter 4:

“Optimizing C Code”

“Optimizing C Code”



C6000 Optimizing C Compiler UG

C6000 Optimizing C Compiler UG

(SPRU187)

(SPRU187)

Lab 3 Objectives

Lab 3 Objectives



Code Composer Studio

Code Composer Studio

Setup

Setup



Create Project

Create Project



Add

Add

config file

config file

(.CDB) to

(.CDB) to

project

project



Compile

Compile

Lab3.c

Lab3.c



Watch

Watch

variables

variables



Stepping

Stepping

thru code

thru code



Profile

Profile

code using different

code using different

build configurations

build configurations



Convert

Convert

integer

integer

to

to

float

float

math

math

Stop

Stop

and do lab

and do lab

Finishing Module 3

Finishing Module 3



Lab Debrief

Lab Debrief



Program Level Optimization

Program Level Optimization



CCS Automation

CCS Automation



Volatile

Volatile



Profile Based Compiler

Profile Based Compiler

Lab 3 Results

Lab 3 Results



Does the optimizer improve the code performance?

Does the optimizer improve the code performance?



How do the Integer & Float compare?

How do the Integer & Float compare?



Can the float be made faster?

Can the float be made faster?

Cycles*

Cycles*

Build

Build

Configuration

Configuration

Debug

Debug

Optimize

Optimize

Lab

Lab

lab3.c

lab3.c

Integer

Integer

lab3.c

lab3.c

Integer

Integer

Debug

Debug

lab3a.c

lab3a.c

Float

Float

Lab Step

Lab Step

Step

Step

42

42

Step

Step

60

60

Take Home

Take Home

Step

Step

10

10

Optimize

Optimize

lab3a.c

lab3a.c

Float

Float

Take Home

Take Home

Step

Step

19

19

7992

7992

168

168

9272

9272

308

308

* Page 3-33

* Page 3-33

Take Home Lab 3b

Take Home Lab 3b



Lab 3c uses the data align pragma

Lab 3c uses the data align pragma

to further optimize the compiler's

to further optimize the compiler's

performance

performance

Optimized

Optimized

Step

Step

19

19

Lab 3a

Lab 3a

308

308

Optimized

Optimized

DATA_ALIGN pragma

DATA_ALIGN pragma

Step

Step

13

13

Lab 3b

Lab 3b

206

206

click for lab 3c details

click for lab 3c details

Take Home Lab 3b

Take Home Lab 3b

To gain extra performance from C,

To gain extra performance from C,

make sure you check out the

make sure you check out the

following references ...

following references ...



CCS online help: Compiler Tutorial

CCS online help: Compiler Tutorial



C6000 Programmer’s Guide

C6000 Programmer’s Guide

(SPRU198)

(SPRU198)

Chapter 4:

Chapter 4:

“Optimizing C Code”

“Optimizing C Code”



C6000 Optimizing C Compiler UG

C6000 Optimizing C Compiler UG

(SPRU187)

(SPRU187)

The whole book

The whole book

Optimized

Optimized

Step

Step

19

19

Lab 3a

Lab 3a

308

308

Optimized

Optimized

DATA_ALIGN pragma

DATA_ALIGN pragma

Step

Step

13

13

Lab 3b

Lab 3b

206

206

Take Home Lab 3c

Take Home Lab 3c



Custom Keyboard

Custom Keyboard

Assignments

Assignments



Assign

Assign

F4

F4

to

to

Debug:Restart

Debug:Restart



Customizing the Default

Customizing the Default

Workspace

Workspace



Change

Change

Toolbar Locations

Toolbar Locations



Set defaults for:

Set defaults for:



File:Open/New

File:Open/New



Project:Open/New

Project:Open/New

Finishing Module 3

Finishing Module 3



Lab Debrief

Lab Debrief



Program Level Optimization

Program Level Optimization



CCS Automation

CCS Automation



Volatile

Volatile



Profile Based Compiler

Profile Based Compiler

Program Level Optimization (-pm)

Program Level Optimization (-pm)

-q

-q -pm -op2

-pm -op2

-mv6700

-mv6700



-pm is

-pm is

critical

critical

in compiling for maximum

in compiling for maximum

performance

performance



-pm creates a temp.c file which includes all C source

-pm creates a temp.c file which includes all C source

files, thus giving the optimizer a program-level

files, thus giving the optimizer a program-level

optimization context

optimization context



-op

-op

n

n

describes a program's external references

describes a program's external references

Finishing Module 3

Finishing Module 3



Lab Debrief

Lab Debrief



Program Level Optimization

Program Level Optimization



CCS Automation

CCS Automation



Command Window

Command Window



GEL Scripting

GEL Scripting



Volatile

Volatile



Profile Based Compiler

Profile Based Compiler

Command Window

Command Window

Some frequently used commands:

Some frequently used commands:



load

load

<filename.out>

<filename.out>



reload

reload



reset

reset



restart

restart



ba

ba

<label >

<label >



wa

wa

<label>

<label>



help

help



dlog

dlog

<filename>,a

<filename>,a



dlog

dlog

close

close



alias

alias

...

...



take

take

<filename.out>

<filename.out>



run

run



run

run

<cond>

<cond>



go

go

<label>

<label>



step

step

<number>

<number>



cstep

cstep

<number>

<number>



halt

halt

GEL Scripting

GEL Scripting



GEL:

GEL:

General

General

Extension

Extension

Language

Language



C style syntax

C style syntax



Large number of

Large number of

debugger

debugger

commands as GEL

commands as GEL

functions

functions



Write your own

Write your own

functions

functions



Create GEL menu

Create GEL menu

items

items



GEL:

GEL:

General

General

Extension

Extension

Language

Language



C style syntax

C style syntax



Large number of

Large number of

debugger

debugger

commands as GEL

commands as GEL

functions

functions



Write your own

Write your own

functions

functions



Create GEL menu

Create GEL menu

items

items

Finishing Module 3

Finishing Module 3



Lab Debrief

Lab Debrief



Program Level Optimization

Program Level Optimization



CCS Automation

CCS Automation



Volatile

Volatile



Profile Based Compiler

Profile Based Compiler

int *ctrl;

int *ctrl;

while (*ctrl == 0);

while (*ctrl == 0);

int *ctrl;

int *ctrl;

while (*ctrl == 0);

while (*ctrl == 0);

volatile

volatile

int *ctrl;

int *ctrl;

while (*ctrl == 0);

while (*ctrl == 0);

volatile

volatile

int *ctrl;

int *ctrl;

while (*ctrl == 0);

while (*ctrl == 0);

Volatile

Volatile

Finishing Module 3

Finishing Module 3



Lab Debrief

Lab Debrief



Program Level Optimization

Program Level Optimization



CCS Automation

CCS Automation



Volatile

Volatile



Profile Based Compiler (PBC)

Profile Based Compiler (PBC)



Note, this tool is only included in the full version of

Note, this tool is only included in the full version of

Code Composer Studio. It is not packaged with the

Code Composer Studio. It is not packaged with the

‘C6711 DSK.

‘C6711 DSK.

Profile Based Compiler (PBC)

Profile Based Compiler (PBC)

do

ub

le-

clic

k

do

ub

le-

clic

k

Note: PBC is only

Note: PBC is only

included with the full

included with the full

version of CCS.

version of CCS.

Note: PBC is only

Note: PBC is only

included with the full

included with the full

version of CCS.

version of CCS.

Module 3 -- Outline

Module 3 -- Outline



Programming Methods

Programming Methods



Code Composer Studio (CCS)

Code Composer Studio (CCS)



Projects

Projects



Working with C

Working with C



Lab

Lab



Lab Debrief

Lab Debrief



Program Level Optimization

Program Level Optimization



CCS Automation

CCS Automation



Volatile

Volatile



Profile Based Compiler

Profile Based Compiler