Texas Instruments TUSB2136 User manual

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

  

May 2004 MSDS Bus Solutions

User’s Guide

SLLU027A

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Notational Conventions

iii

Preface

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About This Manual

The TI USB device controllers TUSB2136, TUSB3210, TUSB3410, and

TUSB5052 do not support in-circuit emulation (ICE) for debugging. However,

there are alternative methods that can be used by the firmware developer to

aid the coding process. This document describes these alternative methods.

How to Use This Manual

This document contains the following chapters:

Chapter 1,Introduction, provides a general overview of the debugging process

and environment.

Chapter 2, Debug Strings, has basic instructions and examples for outputting

from the microcontroller strings containing information that is useful for

debugging purposes.

Chapter 3, In-System Debugging Using Keil’s ISD51 Feature, gives general

information and specific pointers for the use of Keil debugging software with

the TUSBxxxx.

Chapter 4, File List, contains a source code listing for each C routine and

header file used for debugging.

Notational Conventions

This document uses the following conventions.

-Program listings, program examples, and interactive displays are shown

in a special typeface similar to a typewriter’s. Examples use a bold

version of the special typeface for emphasis; interactive displays use a

bold version of the special typeface to distinguish commands that you

enter from items that the system displays (such as prompts, command

output, error messages, etc.).

Here is a sample program listing:

0011 0005 0001 .field 1, 2

0012 0005 0003 .field 3, 4

0013 0005 0006 .field 6, 3

0014 0006 .even

Contents

Here is an example of a system prompt and a command that you might

enter:

C: csr −a /user/ti/simuboard/utilities

-In syntax descriptions, the instruction, command, or directive is in a bold

typeface font and parameters are in an italic typeface. Portions of a syntax

that are in bold should be entered as shown; portions of a syntax that are

in italics describe the type of information that should be entered. Here is

an example of a directive syntax:

.asect ”section name”, address

.asect is the directive. This directive has two parameters, indicated by

section name and address. When you use .asect, the first parameter must

be an actual section name, enclosed in double quotes; the second

parameter must be an address.

-Square brackets ( [and ]) identify an optional parameter. If you use an

optional parameter, you specify the information within the brackets; you

don’t enter the brackets themselves. Here is an example of an instruction

that has an optional parameter:

LALK 16−bit constant [, shift]

The LALK instruction has two parameters. The first parameter, 16-bit

constant, is required. The second parameter, shift, is optional. As this

syntax shows, if you use the optional second parameter, you must

precede it with a comma.

Square brackets are also used as part of the pathname specification for

VMS pathnames; in this case, the brackets are actually part of the

pathname (they are not optional).

-Braces ( { and } ) indicate a list. The symbol |(read as or) separates items

within the list. Here is an example of a list:

{ * | *+ | *− }

This provides three choices: *, *+, or *−.

Unless the list is enclosed in square brackets, you must choose one item

from the list.

-Some directives can have a varying number of parameters. For example,

the .byte directive can have up to 100 parameters. The syntax for this di-

rective is:

.byte value1[, ... , valuen]

This syntax shows that .byte must have at least one value parameter, but

you have the option of supplying additional value parameters, separated

by commas.

Trademarks

Related Documentation From Texas Instruments

TUSB2136 Universal Serial Bus Keyboard Hub Controller Data Manual, TI

literature number SLLS442

TUSB3210 Universal Serial Bus General-Purpose Device Controller Data

Manual, TI literature number SLLS466

Trademarks

Hyperterminal is a trademark of Hilgraeve, Incorporated.

IAR Embedded Workbench is a trademark of IAR Systems AB, Sweden.

Windows is a trademark of Microsoft Corporation.

Other trademarks are the property of their respective owners.

Contents

vii

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1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Debug Strings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 In-System Debugging Using Keil’s ISD51 Feature 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Operation 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Resource Requirements 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Limitations 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 File List 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 C Source Code 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.1 VOID rs232Initialization(VOID); 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.2 VOID rs232PutChar(BYTE bData); 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.3 VOID rs232PutHex(BYTE bData); 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.4 VOID rs232PutString(char *str); 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.5 char rs232GetChar(void); 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Header Files 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2.1 RS232DBG.h 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2.2 Types.h 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

viii

1-1

Introduction



TI’s TUSB2136, TUSB3210, TUSB3410, and TUSB5052 are based on 8052

microcontroller cores, allowing the system designer much flexibility. There are

many advantages to this. The 8052 is a common architecture, and therefore

many programmers are already familiar with it. Also, many existing resources

are available for the 8051/8052 architecture, including sample code. Any

existing 8051/8052 development environment can be used to write and

compile firmware for these devices, such as Keil’s PK51 environment and

IAR’s Embedded Workbench.

Despite the simplicity of the 8052, it is still necessary to debug the code and

to have the necessary tools and techniques for this task. Because of their

customized pinout and lack of JTAG or hardwired debug capability, it is not

possible to use existing in-circuit emulation (ICE) tools with TUSBxxxx.

However, alternative methods can be used.

The first level of debug is the use of debug output strings on the UART

interface. The second and more sophisticated approach is the use of the

ISD51 feature included with Keil’s 8051/8052 development tools. This

document describes techniques for doing so.

Chapter 1

1-2

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