Implementing 802.11 with Microcontrollers: Wireless Networking for Embedded Systems Designers (Paperback)

Fred Eady

  • 出版商: Newnes
  • 出版日期: 2005-09-16
  • 售價: $2,906
  • 貴賓價: 9.5$2,761
  • 語言: 英文
  • 頁數: 400
  • 裝訂: Paperback
  • ISBN: 0750678658
  • ISBN-13: 9780750678650
  • 相關分類: 嵌入式系統

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Description:

Wireless networking is poised to have a massive impact on communications, and the 802.11 standard is to wireless networking what Ethernet is to wired networking. There are already over 50 million devices using the dominant IEEE 802.11 (essentially wireless Ethernet) standard, with astronomical growth predicted over the next 10 years. New applications are emerging every day, with wireless capability being embedded in everything from electric meters to hospital patient tracking systems to security devices.

This practical reference guides readers through the wireless technology forest, giving them the knowledge, the hardware and the software necessary to design a wireless embedded device rapidly, inexpensively, and effectively. Using off-the-shelf microcontrollers from Microchip and Atmel and the popular 802.11 modules from DPAC Technology, the author provides step-by-step instructions for designing the hardware and firmware for a fully operational wireless networking device. The book gives a thorough introduction to 802.11 technology and puts it into perspective against the other wireless standard options. Just enough theory and mathematics is provided to give the depth of understanding needed for practical design work.

The book thoroughly covers:

  • DPAC Module introduction and theory
  • Laptop wireless Ethernet card introduction and theory
  • Implementing the DPAC module in an embedded environment
  • Introduction to PCMCIA-to-microcontroller interfacing
  • Implementing the laptop wireless Ethernet card in an embedded environment In addition, the book includes a CDROM containing all of the code, schematics and programs necessary to implement embedded 802.11 wireless networking.

    Wireless design using microcontrollers requires specialized knowledge that many embedded designers don’t have. Although a lot of information does exist on creating the sort of wireless embedded devices covered in this book, it takes a tremendous amount of time to pull it together from various manufacturer’s websites, databooks, and complex standards documents. This book assembles the needed information to design an embedded device incorporating 802.11 wireless networking capability and provides step by step detailed design examples, for proven working designs based on familiar microcontrollers (instead of much more expensive and complex predesigned boards that are commonly used—using a $5 microcontroller vs. a $200 board means a lot to a product’s bottom line!).
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    Table of Contents:

    Preface
    What’s on the CD-ROM?

    Chapter 1: Why Are We Doing This?
    Selecting a Suitable Microcontroller
    Selecting a Suitable 802.11b Communications Device
    802.11b Hardware Overview
    AirDrop Basics

    Chapter 2: The AirDrop-P
    The AirDrop-P Hardware
    Learn to Play Guitar and Become Famous

    Chapter 3: The AirDrop-A
    The AirDrop-A Hardware
    Bowing Out

    Chapter 4: 802.11b CompactFlash Network Interface Cards
    They Were Not Designed To Do This
    The TEW-222CF
    Never Ignore an Inquisitive Author with Hand Tools
    Unwrapping the TEW-222CF
    An Undercover Look at the Zonet ZCF1100
    What’s Behind Door Number 4
    RF, Witchcraft, Pointy Hats, Ghouls, Goblins…Same Thing

    Chapter 5: Talking with 802.11bCompactFlash NICs
    Physically Connecting a Microcontroller to a CompactFlash Card
    Musical Overtones

    Chapter 6: Touring the Card Information Structure
    Talking in Tuples
    First Steps with the AirDrop-P
    Walking the Tuple Chain
    CIS Reconnaissance
    Dumping Linksys WCF12 Tuples
    Dumping Netgear MA701 Tuples
    Dumping Zonet ZCF100 Tuples
    Enabling the 802.11b CompactFlash NIC
    The Value of Parsing the CIS
    Full Throttle

    Chapter 7: Learning to Talk to 802.11b CompactFlash NICs
    What the 802.11b NIC does for Us
    The 802.11b CompactFlash NIC I/O Drivers

    Chapter 8: Setting Up An AirDrop Wireless Network
    Setting Up the AP
    Something’s in the Air
    Guitars and Hollywood

    Chapter 9: AirDrop Driver Basics
    BAP
    FID
    RID
    Reading a RID
    Stringing Up the SSID
    Good RIDdance
    Retrieving the MAC Address
    Status Check

    Chapter 10: Putting an AirDrop on a Wireless LAN
    Bogie Number 1 – Allocating Transmit Buffers
    Bogie Number 2 – Enabling the MAC
    Authenticating the AirDrop Wireless LAN Station
    Associating with the AIRDROP_NETWORK AP

    Chapter 11: Processing 802.11b Frames with the AirDrop
    AirDrop Frame Structure
    AirDrop-P Frame Reception

    Chapter 12: PINING the AirDrop
    Examining the IP Header

    Chapter 13: Flying Cargo with UDP and the AirDrop
    Running a UDP Application on the AirDrop-P
    The EDTP Internet Test Panel and the Code Behind It
    Exercising the AirDrop-P with the EDTP Internet Test Panel
    Notes

    Chapter 14: Flying Cargo with TCP/IP and the AirDrop
    TCP and the AirDrop-P
    The TCP/IP Stack’s Physical Layer
    The TCP/IP Stack’s Data Link Layer
    The TCP/IP Stack’s Network Layer
    The TCP/IP Stack’s Transport Layer
    The TCP/IP Stack’s Application Layer
    TCP/IP – The Big Ugly
    You’ve Done It!

    Chapter 15: WEP and the AirDrop
    Incorporating WEP into the AirDrop 802.11b Driver
    The New Experimental AirDrop Hardware
    An Experimental AVR AirDrop Variant
    The Experimental AirDrop Firmware
    Coding a Simple 802.11b Web Server
    The AirDrop SRAM

    Chapter 16: A New Kid in Town Who Calls Himself ZigBee
    Zig What???
    Making ZigBee Talk
    The Microchip ZigBee Stack

    hapter 17: Parting Frames
    Numeric Notation
    Source Code Presentation

    Conventions
    Sub Snippets
    Netasyst Sniffer Capture Text Presentation
    Mini Sniffs

    Index