STMicroelectronics ST7MDTULS-EVAL Manuale utente

STMicroelectronics

ST7MDTULS-EVAL

ST7 USB low-speed

evaluation board

UM0068

User manual

Rev 2

October 2007

BLANK

October 2007 Rev 2 1/15

UM0068

User manual

ST7MDTULS-EVAL

ST7 USB low-speed evaluation board

Introduction

The objective of the ST7MDTULS-EVAL evaluation board is to provide a complete USB

application package using a Windows-based host software application and one of ST’s

range of USB low-speed microcontrollers acting as a peripheral device. The host software

and the ST7 source code provide an easily-understood example of how to exchange data

using the HID (human interface devices) class protocols. The firmware supplied on the ST7

devices is based on a USB core library that makes the control of all the USB interface

hardware transparent to the application developer. This USB library, developed by

STMicroelectronics and plug-tested by the USB IF (implementers forum), is intended for you

to use as a toolbox. All the documentation you need to do this is supplied with the package.

The ST7MDTULS-EVAL evaluation board incorporates basic input sources such as push-

buttons, an analog trimmer and output sources (LEDs). It also has a wire-wrap area so that

you can easily develop your own application. An external 12 V charge pump is also

provided, to allow you to program the ST7 embedded Flash program memory using in-

application programming (IAP). The following development tools can be ordered separately:

assembler, linker, C compiler, source level debugger, hardware emulator, programming

boards and gang programmer. For ordering information, see our website at www.st.com or

contact your local sales office.

www.st.com

Contents UM0068

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Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.4 Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4.1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4.3 Device selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Running the USB low speed evaluation board . . . . . . . . . . . . . . . . . . . . 8

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 HID demonstrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.1 USB enumeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.2 Communication with the evaluation board . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Remote wake-up function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 Adding circuitry on the wire-wrap area . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.5 Enabling board for ICC communication . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

UM0068 List of tables

3/15

List of tables

Table 1. Description of evaluation board probing points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 2. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

List of figures UM0068

4/15

List of figures

Figure 1. Evaluation board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2. Device selection for analog-to-digital conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3. Enumeration result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4. HID demonstrator window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 5. HID demonstrator window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6. Board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 7. Recommended board modifications for ICC communication . . . . . . . . . . . . . . . . . . . . . . . 13

UM0068 Getting started

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1 Getting started

1.1 System requirements

In order to use the ST7MDTULS-EVAL with the Windows operating system, a recent version

of Windows, such as Windows 98, Windows Millennium, Windows 2000, or Windows XP

must be installed on the PC.

The version of the Windows OS installed on your PC may be determined by clicking on the

“System” icon in the Control Panel.

Caution: When running the HID evaluation board applet provided in the package, verify that the

correct version of the HID.dll file is installed:

●Windows 98: HID.dll - Version 4.10.1998

●Windows 98 SE: HID.dll - Version 4.10.2222

●Windows Millennium: HID.dll - Version 4.90.300.1

●Windows 2000: HID.dll - Version 5.00.2134.1

●Windows XP: HID.dll - Version 5.1.2600.0

1.2 Package contents

The USB evaluation low-speed board package includes the following items:

●Hardware content

– Two ST72 Low-speed USB microcontroller devices:

ST7262xxx devices in SDIP42 package

ST7263Bxx devices in SDIP32 package

Both devices are FLASH devices allowing up to 100 reprogramming cycles. They

are delivered already programmed with the demonstration firmware.

– One evaluation board

●Software content

– PC executable software for demonstrating HID transfers.

– ST7 firmware (C source code) for the ST7262xxx devices

– ST7 firmware (C source code) for the ST7263Bxx devices

●Documentation

– USB library 4 x Interface documentation.

– ST7262 and ST7263Bxx datasheets

– Application note AN1325

1.3 Software installation

Run USBDemonstrator.exe to install the PC HID demonstrator, and follow the on-screen

prompts to complete the installation.

Getting started UM0068

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1.4 Hardware installation

Figure 1 shows the location of the main components of the evaluation board. The schematic

drawing is given in Figure 6.

Figure 1. Evaluation board layout

1.4.1 Power supply

The evaluation board is directly supplied by the USB Connector (bus powered) and

therefore does not require any external supply. In case the components added on the wire-

wrap area sink more than 500mA, an external power supply must be used.

1.4.2 Jumper settings

The W1 jumper selects the analog trimmer. When the jumper is removed, the analog

trimmer is disconnected from Ground in order to stop power consumption and to meet the

power specifications of USB suspend state. If analog-to-digital conversion is needed for

application development, you can replace this jumper by a switch transistor controlled by an

I/O pin.

SW4=Reset

USB connector

Trimmer

SDIP32 socket

SDIP42 socket

& supply

Jumper W1 Jumper W6 Jumper W7

UM0068 Getting started

7/15

Figure 2. Device selection for analog-to-digital conversion

If you are using the analog trimmer, select the installed ST7 device using jumper W6 as

shown in Figure 2. This ties the analog trimmer to the PA0 I/O port of the ST7262xxx

devices and to the PB0 port of the ST7263Bxx devices. Any other analog input pin on the

microcontroller can be used by removing the W6 jumper and wiring the center pin of W6 to

the analog input.

The W7 jumper can be used to connect or disconnect an external 12V charge pump in case

you want to program the Flash.

1.4.3 Device selection

Three devices can be used with this board:

●ST7263Bxx devices in SDIP32 package on the internal socket

●ST7262xxx devices in SDIP42 package on the external socket

ST7262xxx ST7263Bxx

W6 jumper

Running the USB low speed evaluation board UM0068

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2 Running the USB low speed evaluation board

2.1 Introduction

The USB low-speed evaluation board application consists of two main parts: a HID

demonstrator running on a PC and the evaluation board itself.

Communications between the PC and the ST7 board are done through different USB pipes:

●Control IN and OUT during enumeration with the bi-directional Endpoint 0.

●Interrupt IN from endpoint 1 for data transferred from the ST7 to the PC.

●Interrupt OUT to endpoint 2 for the data transferred from the PC to the ST7. Note that

the Windows98 HID driver does not support interrupt OUT transfers, and automatically

uses the control OUT pipe to endpoint 0 instead (Set-Output function).

First connect the evaluation board to the PC with the USB cable. As a result, the evaluation

board is enumerated as an HID device as shown in Figure 3, and is ready to use.

Figure 3. Enumeration result

When you start the HID demonstrator on the PC, a graphical interface is displayed (see

Figure 3) for controlling the evaluation board. This PC software is used to demonstrate the

enumeration process and data transfer between the PC and the ST7 peripheral according to

the USB HID class specifications.

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