ST STEVAL-PCC001V1 Manual de usuario

December 2006 Rev 1 1/24

UM0323

User manual

STEVAL-PCC001V1 - Getting started with the ST7

Full-speed USB/RS232 Evaluation Kit

1 Introduction

The ST7 Full-speed USB/RS232 Evaluation Kit (STEVAL-PCC001V1) has been created in

order to provide a complete reference design for a serial port bridge as well as an evaluation

board for ST72F651 devices. This application is used as an interface between devices with

a serial port (RS-232 type) and a host computer USB port.

The USB interface is widespread and well known, but due to its complexity, the RS232

standard connection is still much used in some applications. In the past all PC's had two

Serial communication ports RS232, but in the majority of PCs on the market today there is

only one serial communication port RS232 and some notebooks don't include RS232 at all.

In contrast the number of USB sockets are increasing.

This evaluation kit demonstrates the use of the USB Full Speed microcontroller ST72651 as

a bridge between the USB and the RS232 interface, providing an additional Serial port on

computers equipped with USB.

In addition, this evaluation kit demonstrates a simple method for connecting the USB

microcontroller ST72651 to the PC without need of a proprietary driver.

Several general purpose input / output pins of ST72651 are provided on the external

connector, thus providing a way to connect additional circuitry and allow customized USB

application. The evaluation board can be reprogrammed easily with a user code through the

In-Circuit Communication (ICC) connector.

1.1 Features and limitation of the RS232 communication

■Communication speeds implemented (Baud/s): 2400, 4800, 9600, 14400, 19200, 28800,

38400, 56000, 57600, 115200, 128000, 256000

■Half-duplex communication

■8-bit or 7-bit data + 1-bit parity (even/odd)

■No hardware handshaking (can be implemented by user).

Contents UM0323 - User manual

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Contents

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

1.1 Features and limitation of the RS232 communication . . . . . . . . . . . . . . . . 1

2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Package content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3.1 Windows XP installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.2 Windows 2000 installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3.3 Windows 98SE installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3.4 COM port number change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3 Usage of the evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4 Evaluation board hardware description . . . . . . . . . . . . . . . . . . . . . . . . 19

5 Evaluation board firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6 Evaluation board diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7 Part list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

UM0323 - User manual List of tables

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List of tables

Table 1. Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Table 2. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

List of figures UM0323 - User manual

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List of figures

Figure 1. Windows XP driver installation - welcome dialog box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2. Windows XP driver installation - search options dialog box . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Windows XP driver installation - hardware type dialog box . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4. Windows XP driver installation - have disk dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 5. Windows XP driver installation - path to driver dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 6. Windows XP driver installation - driver selection dialog box. . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 7. Windows XP driver installation - compatibility warning dialog box . . . . . . . . . . . . . . . . . . . . 9

Figure 8. Windows XP driver installation - installation finished dialog box. . . . . . . . . . . . . . . . . . . . . . 9

Figure 9. Windows 2000 driver installation - welcome dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 10. Windows 2000 driver installation - search options dialog box . . . . . . . . . . . . . . . . . . . . . . 10

Figure 11. Windows 2000 driver installation - locate driver files dialog box. . . . . . . . . . . . . . . . . . . . . 11

Figure 12. Windows 2000 driver installation - path to driver dialog box. . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 13. Windows 2000 driver installation - digital signature dialog box. . . . . . . . . . . . . . . . . . . . . . 12

Figure 14. Windows 2000 driver installation - installation finished dialog box . . . . . . . . . . . . . . . . . . . 12

Figure 15. Windows 98SE driver installation - welcome dialog box. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 16. Windows 98SE driver installation - search options dialog box . . . . . . . . . . . . . . . . . . . . . . 13

Figure 17. Windows 98SE driver installation - specify location dialog box . . . . . . . . . . . . . . . . . . . . . 14

Figure 18. Windows 98SE driver installation - driver confirmation dialog box . . . . . . . . . . . . . . . . . . . 14

Figure 19. Windows 98SE driver installation - installation finished dialog box. . . . . . . . . . . . . . . . . . . 15

Figure 20. Windows 98SE driver installation - the second welcome dialog box . . . . . . . . . . . . . . . . . 15

Figure 21. Device manager window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 22. Communication port properties dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 23. Advanced settings dialog box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 24. Evaluation board components layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 25. Evaluation board diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

UM0323 - User manual Getting started

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2 Getting started

2.1 System requirements

For correct installation of the ST7 USB/RS232 Evaluation Kit on your PC you need:

●PC with a running operating system of Windows© 98SE, 2000 or XP

●20 MBytes of free hard disk space (the driver itself consumes less than 1 MByte)

●One free USB socket

●CD-ROM drive.

2.2 Package content

The Full-speed USB/RS232 Evaluation Kit includes the following items:

●One evaluation board with ICC, USB and RS232 connectors

●One soldered ST72F651AR6 full-speed USB microcontroller device (TQFP64

package)

ST72F651AR6 is a Flash device which allows up to 100 reprogramming cycles. The

device is programmed with the evaluation firmware.

●CD-ROM

– USB Driver for Windows 2000/XP/98SE

– Documentation (Getting Started Manual, product datasheets)

– Source code for the evaluation board firmware

– PCB production data

– Simple testing application USB_FS_test.exe.

2.3 Installation

The hardware setup process is different for each operating system, but for all of them you

have to insert the installation CD-ROM included in the evaluation board package before

installation.

Getting started UM0323 - User manual

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2.3.1 Windows XP installation

Log on with appropriate administration rights.

Plug the evaluation board into the free USB socket. A short while later Windows starts to

enumerate the new USB device and opens the welcome dialog box.

Figure 1. Windows XP driver installation - welcome dialog box

Select "Install from a list or specific location" and press the Next button.

Figure 2. Windows XP driver installation - search options dialog box

UM0323 - User manual Getting started

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In the search options dialog box select "Don't search …" and press Next button.

Figure 3. Windows XP driver installation - hardware type dialog box

In the hardware type dialog box select "Ports (COM & LPT)" and press Next button.

Figure 4. Windows XP driver installation - have disk dialog box

No available devices should be visible for first time installations. Press the "Have Disk …"

button.

Getting started UM0323 - User manual

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Figure 5. Windows XP driver installation - path to driver dialog box

Select the correct path to the drivers located on the CD-ROM. For Windows XP the driver is

located in the path [CD-ROM letter]:\Drivers\CDC-inf\Win2k_XP. When the directory is

set, press OK button.

Figure 6. Windows XP driver installation - driver selection dialog box

After correct selection of the pathway to the CD-ROM drivers, the evaluation board device

will become visible. Select "STM CDC Communication Port" and press Next.

UM0323 - User manual Getting started

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Figure 7. Windows XP driver installation - compatibility warning dialog box

During the final stage of installation Windows XP warns you that the driver is not certified. If

you are using the original CD-ROM you can ignore this message but you need to press the

Continue Anyway button otherwise the device will not work properly.

Figure 8. Windows XP driver installation - installation finished dialog box

Press the Finish button to complete the installation process.

Getting started UM0323 - User manual

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2.3.2 Windows 2000 installation

Log on with appropriate administration rights.

Plug the evaluation board into the free USB socket. A short while later Windows starts to

enumerate the new USB device and opens the welcome dialog box.

Figure 9. Windows 2000 driver installation - welcome dialog box

Press Next button to continue.

Figure 10. Windows 2000 driver installation - search options dialog box

Select "Search for a suitable driver for my device" and press Next button.

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