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UM0290: DescriptionThis document presents a description; File Size587KB，76 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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UM0290 Overview

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UM0290

User manual

STR7/STR9 USB developer kit

Introduction

The STR7/9 USB developer kit is a complete firmware and software package including

examples and demos for all USB transfer types (control, interrupt, bulk and isochronous). It

supports all ST 32-bit USB microcontrollers (STR71x, STR75x and STR91x).

The aim of the STR7/9 USB developer kit is to use the same certified USB library across the

STR7/STR9 microcontroller families and present for each at least one firmware demo per

USB transfer type.

This document presents a description of all the components of the STR7/9 USB Developer

kit, including:

■

Common STR7/9 USB library: All processes related to default endpoint and standard

requests

Joystick mouse demo: Interrupt transfer

Custom HID: interrupt transfer

Device Firmware Upgrade (DFU): control transfer

Mass storage demo: Bulk transfer

Virtual COM port: Bulk transfer

USB voice demo (speaker and microphone): Isochronous transfer

November 2008

Rev 2

1/76

www.st.com

Contents

UM0290

Contents

STR7/STR9 USB firmware library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1

1.2

USB application hierarchy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

USB library core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2.1

1.2.2

1.2.3

1.2.4

usb_type.h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

usb_reg(.c, .h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

usb_int (.c , .h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

usb_core (.c , .h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.3

Application interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.3.1

1.3.2

1.3.3

1.3.4

1.3.5

usb_istr(.c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

usb_conf(.h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

usb_endp (.c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

usb_prop (.c , .h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

usb_pwr (.c , .h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1.4

Implementing a USB application using the STR7/9 USB library . . . . . . . 21

1.4.1

1.4.2

1.4.3

Implementing a no data class specific request . . . . . . . . . . . . . . . . . . . 21

How to implement a data class specific request . . . . . . . . . . . . . . . . . . 21

How to manage data transfers in a non-control endpoint . . . . . . . . . . . 22

Joystick mouse demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Custom HID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.1

3.2

3.3

General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Descriptor topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Custom HID implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.3.1

3.3.2

3.3.3

LEDs control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Push button states report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

ADC converted data transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Device firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.1

4.2

General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

DFU extension protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.2.1

4.2.2

4.2.3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Phases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2/76

UM0290

Contents

4.3

DFU mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.3.1

4.3.2

Run-time descriptor set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

DFU mode descriptor set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.4

4.5

Reconfiguration phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Transfer phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.5.1

4.5.2

4.5.3

4.5.4

4.5.5

Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Special command/protocol descriptions . . . . . . . . . . . . . . . . . . . . . . . . 34

DFU state diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Downloading and uploading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Manifestation phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.6

DFU implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.6.1

4.6.2

4.6.3

DFU mode entry mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Available DFU images in the STR7/9 USB development kit . . . . . . . . . 37

How to create a DFU Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Mass storage demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.1

5.2

Mass storage demo overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Mass storage protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.2.1

5.2.2

Bulk Only Transfer (BOT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Small Computer System Interface (SCSI) . . . . . . . . . . . . . . . . . . . . . . . 42

5.3

Mass storage demo implementations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5.3.1

5.3.2

5.3.3

5.3.4

5.3.5

5.3.6

5.3.7

Hardware configuration interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Endpoint configurations and data management . . . . . . . . . . . . . . . . . . 44

Class specific requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Standard request requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

BOT state machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

SCSI protocol implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Memory management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

5.4

How to customize the mass storage demo . . . . . . . . . . . . . . . . . . . . . . . 49

Virtual COM port demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

6.1

6.2

6.3

Virtual COM port demo proposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Software driver installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

6.3.1

6.3.2

Hardware implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Firmware implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

3/76

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