USB Complete Third Edition - $49.95

by Jan Axelson This book is for developers who design and program devices that use the Universal Serial Bus (USB) interface. My goal is to introduce you to USB and to help you get your devices up and communicating as quickly and easily as possible. The USB interface is versatile enough for a wide range of peripheral devices. Standard peripherals that use USB include mice, keyboards, drives, printers, and audio/video devices. USB is also suitable for data-acquisition units, control systems, and other devices with specialized functions, including one-of-a-kind designs. To develop a device with a USB interface, you need to know something about how the interface works, what tasks your device firmware must perform to communicate on the bus, and what class drivers and other support are available on the host computers that your device will attach to. The right choices of device hardware, device class, and development tools and techniques can go a long way in avoiding snags and simplifying what needs to be done. If you’re involved with designing USB devices, writing the firmware that resides inside USB devices, or writing applications that communicate with USB devices, this book will help you along the way. 572 pages.

Table of Contents Introduction 1. USB Basics 1      What USB Can Do            Benefits for Users            Benefits for Developers            Beyond the Hype      Evolution of an Interface            Original USB            USB 2.0            USB On-The-Go            Wireless USB            USB versus IEEE-1394            USB versus Ethernet      Bus Components            Topology            Defining Terms      Division of Labor            The Host’s Duties            The Peripheral’s Duties            What about Speed?      Developing a Device            Elements in the Link            Tools for Developing            Steps in Developing a Project 2. Inside USB Transfers 33      Transfer Basics           Enumeration Communications           Application Communications           Managing Data on the Bus           Host Speed and Bus Speed      Elements of a Transfer           Device Endpoints: the Source and Sink of Data           Pipes: Connecting Endpoints to the Host           Types of Transfers           Stream and Message Pipes           Initiating a Transfer           Transactions: the Building Blocks of a Transfer           Transaction Phases      Ensuring that Transfers Are Successful           Handshaking           Reporting the Status of Control Transfers           Error Checking 3. A Transfer Type for Every Purpose 61      Control Transfers           Availability           Structure           Data Size           Speed           Detecting and Handling Errors      Bulk Transfers           Availability           Structure           Data Size           Speed           Detecting and Handling Errors      Interrupt Transfers           Availability           Structure           Data Size           Speed           Detecting and Handling Errors      Isochronous Transfers           Availability           Structure           Data Size           Speed           Detecting and Handling Errors      More about Time-critical Transfers           Bus Bandwidth           Device Capabilities           Host Capabilities           Host Latencies 4. Enumeration: How the Host Learns about Devices 85      The Process           Enumeration Steps           Enumerating a Hub           Device Removal           Tips for Successful Enumeration      Descriptors           Types of Descriptors           Device Descriptor           Device_qualifier Descriptor           Configuration Descriptor           Other_speed_configuration Descriptor           Interface Association Descriptor           Interface Descriptor           Endpoint Descriptor           String Descriptor           Other Standard Descriptors           The Microsoft OS Descriptor      Descriptors in 2.0-compliant Devices           Making 1.x Descriptors 2.0-compliant           Detecting the Speed of a Dual-Speed Device 5. Control Transfers: Structured Requests for Critical Data 117      Elements of a Control Transfer           Setup Stage           Data Stage           Status Stage           Handling Errors           Device Firmware      The Requests           Get_Status           Clear_Feature           Set_Feature           Set_Address           Get_Descriptor           Set_Descriptor           Get_Configuration           Set_Configuration           Get_Interface           Set_Interface           Synch_Frame      Other Control Requests           Class-specific Requests           Vendor-specific Requests 6. Chip Choices 141      Components of a USB Device           The USB Controller           Other Device Components           Simplifying Device Development           Device Requirements           Chip Documentation           Driver Choices           Debugging Tools      Controllers with Embedded CPUs           Microchip PIC18F4550           Cypress EZ-USB           Cypress enCoRe II           Freescale MC68HC908JB16           Freescale MCF5482 ColdFire      Controllers that Interface to External CPUs           National Semiconductor USBN9603           Philips Semiconductors ISP1181B           Philips Semiconductors ISP1581           PLX Technology NET2272           FTDI Chip FT232BM and FT245BM 7. Device Classes 177      About Classes           Device Working Groups           Elements of a Class Specification      Defined Classes           Audio           Chip/Smart Card Interface           Communication Devices: Modems and Networks           Content Security           Device Firmware Upgrade           Human Interface           IrDA Bridge           Mass Storage           Printers           Still Image Capture: Cameras and Scanners           Test and Measurement           Video      Implementing Non-standard Functions           Standard or Custom Driver?           Converting from RS-232           Converting from the Parallel Port           PC-to-PC Communications           Using a Generic Driver 8. How the Host Communicates 233      Device Driver Basics           Insulating Applications from the Details           Options for USB Devices           User and Kernel Modes      WDM Drivers           Layered Drivers           Communication Flow           More Examples      Creating a Custom Driver           Writing a Driver from Scratch           Using a Driver Toolkit      Using GUIDs           Device Setup GUIDs           Device Interface GUIDs 9. Matching a Driver to a Device 253      Using the Device Manager           Viewing Devices           Property Pages      Device Information in the Registry           The Hardware Key           The Class Key           The Driver Key           The Service Key      Inside INF Files           Syntax           Sections      Using Device Identification Strings           Finding a Match           Do You Need to Provide an INF File?      Tools and Diagnostic Aids           Tips for Using INF Files           What the User Sees 10. Detecting Devices 281      A Brief Guide to Calling API Functions           Managed and Unmanaged Code           Documentation           Using Visual C++ .NET           Using Visual Basic .NET      Finding Your Device           Obtaining the Device Interface GUID           Requesting a Pointer to a Device Information Set           Identifying a Device Interface           Requesting a Structure Containing the Device Path Name           Extracting the Device Path Name           Closing Communications      Obtaining a Handle           Requesting a Communications Handle           Closing the Handle      Detecting Attachment and Removal           About Device Notifications           Registering for Device Notifications           Capturing Device Change Messages           Reading Device Change Messages           Retrieving the Device Path Name in the Message           Stopping Device Notifications 11. Human Interface Devices: Using Control and Interrupt Transfers 319      What is a HID?           Hardware Requirements           Firmware Requirements      Identifying a Device as a HID           The HID Interface           HID Class Descriptor           Report Descriptors      HID-specific Requests           Get_Report           Get_Idle           Get_Protocol           Set_Report           Set_Idle           Set_Protocol      Transferring Data           About the Example Code           Sending Reports via Interrupt Transfers           Receiving Reports via Interrupt Transfers           Sending Reports via Control Transfers           Receiving Reports via Control Transfers 12. Human Interface Devices: Reports 351      Report Structure           Using the HID Descriptor Tool           Control and Data Item Values           Item Types      The Main Item Type           Input, Output, and Feature Items           Collection and End Collection Items      The Global Item Type           Identifying the Report           Describing the Data’s Use           Converting Units           Converting Raw Data           Describing the Data’s Size and Format           Saving and Restoring Global Items      The Local Item Type           Physical Descriptors           Padding 13. Human Interface Devices: Host Application 375      HID API Functions           Requesting Information about the HID           Sending and Receiving Reports           Providing and Using Report Data           Managing HID Communications      Identifying a Device           Reading the Vendor and Product IDs           Getting a Pointer to a Buffer with Device Capabilities           Getting the Device’s Capabilities           Getting the Capabilities of the Buttons and Values      Sending and Receiving Reports           Sending an Output Report to the Device           Reading an Input Report from the Device           Writing a Feature Report to the Device           Reading a Feature Report from a Device           Closing Communications 14. Bulk Transfers for Any CPU 407      Two Projects           Asynchronous Serial Interface           Parallel Interface      Host Programming           Using the D2XX Direct Driver           Selecting a Driver      Performance Tips           Speed Considerations           Minimizing Latency           Preventing Lost Data      EEPROM Programming           EEPROM Data           Editing the Data 15. Hubs: the Link between Devices and the Host 433      Hub Basics           The Hub Repeater           The Transaction Translator           The Hub Controller           Speed           Maintaing an Idle Bus           How Many Hubs in Series?      The Hub Class           Hub Descriptors           Hub-class Requests           Port Indicators 16. Managing Power 455      Powering Options           Voltages           Which Peripherals Can Use Bus Power?           Power Needs           Informing the Host      Hub Power           Power Sources           Over-current Protection           Power Switching      Saving Power           Global and Selective Suspends           Current Limits for Suspended Devices           Resuming Communications           Power Management under Windows 17. Testing and Debugging 471      Tools           Hardware Protocol Analyzers           Software Protocol Analyzers           Traffic Generators      Testing           Compliance Testing           WHQL Testing 18. Signals and Encoding 489      Bus States           Low-speed and Full-speed Bus States           High-speed Bus States      Data Encoding           Staying Synchronized           Timing Accuracy      Packet Format           Fields           Inter-packet Delay      Test Modes           Entering and Exiting Test Modes           The Modes 19. The Electrical Interface 505      Transceivers and Signals           Cable Segments           Low- and Full-speed Transceivers           High-speed Transceivers      Signal Voltages           Low and Full Speeds           High Speed      Cables           Conductors           Connectors           Detachable and Captive Cables           Cable Length      Ensuring Signal Quality           Sources of Noise           Balanced Lines           Twisted Pairs           Shielding           Edge Rates           Isolated Interfaces      Wireless Links           Cypress WirelessUSB           The Wireless USB Initiative           Other Options 20. Dual-role Devices with USB On-The-Go 535     Device and Host in One           Capabilities and Limits           Requirements for an OTG Device           The OTG Descriptor           Feature Codes for HNP      OTG Controller Chips           Philips ISP1362           TransDimension TD242LP           Cypress CY7C67200 EZ-OTG           Philips ISP1261 Bridge Controller Index

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