Just getting started with microcontrollers? The Basic Stamp has taken the dedicated microcontroller out of the province of experts. It's a special microcontroller that requires very little (if any) supporting hardware. This book teaches what you need to know about solving problems with microprocessors in general, and the Basic Stamp in particular. You get clear explanations of the principles you need to design hardware and write software for the Basic Stamp. You also get a wealth of example projects and a Basic Stamp emulator that lets you experiment without so much as buying a Stamp! Are you an old-hand at microcontroller design? Seasoned designers accustomed to using more arcane microcontrollers will find that Basic Stamps are easy, productive, and fun to use. You will find practical advice for PC interfacing, using EEPROMS and other devices, as well as a task-oriented command reference, and chapters that cover analog I/O, serial communications, and LCDs and keypads. The author also tells how to move programs to other processors when necessary, and covers the latest developments including the SX Basic Stamp and the Windows-based programming software.

Want to control a chemical process, or move a telescope by remote control? The Basic Stamp has opened microcontroller design to a wide range of people. And this book is a complete guide to developing practical solutions with the Stamp. Chapters provide exercises to confirm your understanding of key topics, or serve as an instructional tool in a microcontroller course. Sample projects include:

• A PC-connected frequency counter

• A homebrew analog to digital converter

• A resistance or capacitance meter

• A Morse code keyer

• A variety of illustrative games

The CD-ROM is packed with files and information about the Stamp. It features a Basic Stamp emulator and a PIC programmer based on the Basic Stamp for times when you need the power of assembly language.

Author bio: Al Williams is a consultant, teacher, and author. As a veteran hardware and software designer, Al has written several popular books on all aspects of computers. His columns appear regularly in Visual Developer and Web Techniques magazines. An amateur radio operator since 1977, Al is expert at providing a bridge between the hardware and software worlds. His company, AWC, provides microcontroller consulting and development tools for Basic Stamps and other microcontrollers.

432 sidor + CD 561:- inkl moms (449 ex) 0-87930-587-8

Table of Contents

Introduction The Challenge Is This Book for You? What You Need How to Proceed Chapter 1 Jump Right In getting Started Hardware Other Prototyping Needs The No-Hardware Approach The Software Your First Stamp Program The Outside World Digital Basics Number Systems Other Bases Boolean Algebra Connecting Hardware Digital Systems in an Analog World: A Few Laws Pull-up and Pull-down Resistors Putting it All Together: Your Next Program Summary Exercises Chapter 2 The Nitty Gritty -- A Stamp Reference General Program Formatting and Labels The Stamp I Memory Map and I/O Stamp I Expressions The Stamp II Memory Map and I/O Stamp II Expressions Handling Large, Negative, and Floating Point Expressions Command Reference Section I -- Data Commands DEBUG I, II, IISX SYMBOL I CON II, IISX VAR II, IISX LET I EEPROM I BSAVE I DATA II. IISX READ I, II, IISX WRITE I, II, IISX PUT IISX GET IISX RANDOM I, II, IISX Section II -- Flow Control END I, II, IISX PAUSE I, II, IISX NAP I, II, IISX SLEEP I, II, IISX GOTO I, II, IISX IF I, II, IISX BRANCH I, II, IISX GOSUB I, II, IISX RETURN I, II, IISX FOR I, II, IISX NEXT I, II, IISX RUN IISX Section III -- Digital I/O INPUT I, II, IISX OUTPUT I, II, IISX HIGH I, II, IISX LOW I, II, IISX TOGGLE I, II, IISX REVERSE I, II, IISX PULSOUT I, II, IISX PULSIN I, II, IISX COUNT II, IISX BUTTON I, II, IISX XOUT II, IISX Section IV -- Analog I/O PWM I, II, IISX POT I RCTIME II, IISX SOUND I FREQOUT II, IISX DTMFOUT II, IISX Section V -- Serial I/O SERIN I, II, IISX SEROUT I, II, IISX SHIFTIN II, IISX SHIFTOUT II, IISX Section VI -- Tables LOOKUP I, II, IISX LOOKDOWN I, II, IISX Section VII -- Math Operators + , - , * , / I, II, IISX ** I, II, IISX */ II, IISX // I, II, IISX >> , << II, IISX MIN , MAX I, II, IISX ABS II, IISX SQR II, IISX SIN , COS II, IISX DIG II, IISX Section VIII -- Logical Operators & , | , ^ I, II, IISX &/ , |/ , ^/ I REV II, IISX DCD II, IISX NCD II, IISX Exercises Chapter 3 Digital I/O I/O by Command I/O with Registers An LED Counter Driving Larger Loads Driving Relays and Other Inductive Loads Switching a Relay Switching Power with PNP Transistors A PNP Driver Other Switches A Word About AC Loads Simulating Open Collector Outputs Working with Pulses Counting Pulses Reading Buttons Experimenting with Button Sharing I/O Pins Expanding I/O Summary Exercises Chapter 4 Analog Output Sound and Tone Generation Simple Speaker Circuits Experimenting with PWM Noise Amplifiers Connecting to the Phone Line An Example Generating Voltages using PWM Trying PWM Other Uses for PWM Traditional D/A Summary Exercises

Chapter 5 Analog Input Careful What You Ask For Reading Resistance or Capacitance A Capacitance Meter Project Using an ADC A Homebrew ADC Voltage to Pulse Conversion The Simplest Analog Input Summary Exercises Chapter 6 Serial I/O Definitions Simple Serial Protocols Interfacing with the PAK-I The I2C Bus I2C Basics Ending a Transmission Slow Slaves Arbitrating Multiple Masters I2C Plans Interfacing to an I2C EEPROM Asynchronous Communications RS232 Basics Open Collector Async A PC Frequency Counter Extending PC I/O Summary Exercises Chapter 7 LCDs and Keypads Serial LCDs LCD Interfacing LCD Commands LCD Software Scanning a Keypad Analog Keypads Making the Most of Limited Keys Graphical LCDs Details Summary Exercises Chapter 8 Motors DC Motors Using PWM The H Bridge About Stepper Motors Servos Cannibalizing Motors Summary Exercises Chapter 9 Just Projects LED Die Reaction Game Quiz Buttons Logic Probe PocketWatch Morse Code IDer Morse Code Keyer Chapter 10 The Next Step Why Not Stamps? What You Will Need Software Other Software Assembler Survival Guide Hardware Shortcuts Getting Started The Real Thing Beyond PICs Stamps + PICs? An Example PBP Program Summary Exercises Chapter 11 On Your Own The Parallax Mailing List Web Sites Appendix A About the CD-ROM About the Stamp I Simulator Appendix B The APP-I PIC Programmer What's Needed? Building It Software Troubleshooting PICAWC Controls Using the COM Port as a Power Supply Appendix C Making Cables Stamp I Stamp II and Stamp IISX Answer Key Chapter 1 Answers Chapter 2 Answers Chapter 3 Answers Chapter 4 Answers Chapter 5 Answers Chapter 6 Answers Chapter 7 Answers Chapter 8Answers Chapter 9 (No exercises) Chapter 10 Answers

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