BeagleBone Cookbook · Software and Hardware Problems and Solutions by Yoder, Mark A. -- Read -- Imperial Library of Trantor

Index

Preface

Who This Book Is For How to Use This Book Conventions Used in This Book Using Code Examples About the Diagrams Safari® Books Online How to Contact Us Acknowledgments

1. Basics

1.0. Introduction 1.1. Picking Your Beagle

Problem Solution Discussion

The Original BeagleBoard BeagleBoard-xM BeagleBone White BeagleBone Black BeagleBoard-X15

1.2. Getting Started, Out of the Box

Problem Solution Discussion

1.3. Verifying You Have the Latest Version of the OS on Your Bone

Problem Solution Discussion

1.4. Running the BoneScript API Tutorials

Problem Solution Discussion

1.5. Wiring a Breadboard

Problem Solution Discussion

1.6. Editing Code Using the Cloud9 IDE

Problem Solution Discussion

1.7. Running JavaScript Applications from the Cloud9 IDE

Problem Solution Discussion

1.8. Running Applications Automatically

Problem Solution Discussion

1.9. Finding the Latest Version of the OS for Your Bone

Problem Solution Discussion

1.10. Running the Latest Version of the OS on Your Bone

Problem Solution

Windows Linux Mac

Discussion

1.11. Updating the OS on Your Bone

Problem Solution Discussion

1.12. Backing Up the Onboard Flash

Problem Solution Discussion

1.13. Updating the Onboard Flash

Problem Solution

2. Sensors

2.0. Introduction 2.1. Choosing a Method to Connect Your Sensor

Problem Solution Discussion

2.2. Input and Run a JavaScript Application for Talking to Sensors

Problem Solution Discussion

2.3. Reading the Status of a Pushbutton or Magnetic Switch (Passive On/Off Sensor)

Problem Solution Discussion

2.4. Reading a Position, Light, or Force Sensor (Variable Resistance Sensor)

Problem Solution

A variable resistor with three terminals A variable resistor with two terminals

Discussion

2.5. Reading a Distance Sensor (Analog or Variable Voltage Sensor)

Problem Solution Discussion

2.6. Reading a Distance Sensor (Variable Pulse Width Sensor)

Problem Solution Discussion

2.7. Accurately Reading the Position of a Motor or Dial

Problem Solution Discussion See Also

2.8. Acquiring Data by Using a Smart Sensor over a Serial Connection

Problem Solution Discussion

2.9. Measuring a Temperature

Problem Solution Discussion

2.10. Reading Temperature via a Dallas 1-Wire Device

Problem Solution Discussion

2.11. Sensing All Sorts of Things with SensorTag via Bluetooth v4.0

Problem Solution Discussion

2.12. Playing and Recording Audio

Problem Solution Discussion

3. Displays and Other Outputs

3.0. Introduction 3.1. Toggling an Onboard LED

Problem Solution Discussion

3.2. Toggling an External LED

Problem Solution Discussion

3.3. Toggling a High-Voltage External Device

Problem Solution Discussion

3.4. Fading an External LED

Problem Solution Discussion

3.5. Writing to an LED Matrix

Problem Solution Discussion

3.6. Driving a 5 V Device

Problem Solution Discussion

3.7. Writing to a NeoPixel LED String

Problem Solution Discussion

3.8. Using a Nokia 5510 LCD Display

Problem Solution Discussion

3.9. Making Your Bone Speak

Problem Solution Discussion

4. Motors

4.0. Introduction 4.1. Controlling a Servo Motor

Problem Solution Discussion

4.2. Controlling the Speed of a DC Motor

Problem Solution Discussion See Also

4.3. Controlling the Speed and Direction of a DC Motor

Problem Solution Discussion

4.4. Driving a Bipolar Stepper Motor

Problem Solution Discussion

4.5. Driving a Unipolar Stepper Motor

Problem Solution Discussion

5. Beyond the Basics

5.0. Introduction 5.1. Running Your Bone Standalone

Problem Solution Discussion

5.2. Selecting an OS for Your Development Host Computer

Problem Solution Discussion

5.3. Getting to the Command Shell via SSH

Problem Solution Discussion

5.4. Getting to the Command Shell via the Virtual Serial Port

Problem Solution Discussion

5.5. Viewing and Debugging the Kernel and u-boot Messages at Boot Time

Problem Solution Discussion

5.6. Verifying You Have the Latest Version of the OS on Your Bone from the Shell

Problem Solution Discussion

5.7. Controlling the Bone Remotely with VNC

Problem Solution Discussion

5.8. Learning Typical GNU/Linux Commands

Problem Solution Discussion

5.9. Editing a Text File from the GNU/Linux Command Shell

Problem Solution Discussion

5.10. Using a Graphical Editor

Problem Solution

5.11. Establishing an Ethernet-Based Internet Connection

Problem Solution Discussion

Changing passwords Setting your Bone’s hostname

5.12. Establishing a WiFi-Based Internet Connection

Problem Solution Discussion

5.13. Sharing the Host’s Internet Connection over USB

Problem Solution

Letting your bone see the world: setting up IP masquerading Letting the world see your bone: setting up port forwarding

Discussion

5.14. Setting Up a Firewall

Problem Solution Discussion

5.15. Installing Additional Packages from the Debian Package Feed

Problem Solution Discussion

5.16. Removing Packages Installed with apt-get

Problem Solution Discussion

5.17. Copying Files Between the Onboard Flash and the MicroSD Card

Problem Solution Discussion

5.18. Freeing Space on the Onboard Flash or MicroSD Card

Problem Solution

Removing preinstalled packages Discovering big files

Discussion

5.19. Installing Additional Node.js Packages

Problem Solution Discussion

5.20. Using Python to Interact with the Physical World

Problem Solution Discussion

5.21. Using C to Interact with the Physical World

Problem Solution Discussion

6. Internet of Things

6.0. Introduction 6.1. Accessing Your Host Computer’s Files on the Bone

Problem Solution Discussion

6.2. Serving Web Pages from the Bone

Problem Solution Discussion

6.3. Interacting with the Bone via a Web Browser

Problem Solution Discussion

6.4. Displaying GPIO Status in a Web Browser

Problem Solution Discussion

6.5. Continuously Displaying the GPIO Value via jsfiddle

Problem Solution Discussion See Also

6.6. Continuously Displaying the GPIO Value

Problem Solution Discussion

6.7. Plotting Data

Problem Solution Discussion

Plotting with jsfiddle Plotting locally

6.8. Sending an Email

Problem Solution Discussion

6.9. Sending an SMS Message

Problem Solution Discussion

6.10. Displaying the Current Weather Conditions

Problem Solution Discussion

6.11. Sending and Receiving Tweets

Problem Solution Discussion

6.12. Wiring the IoT with Node-RED

Problem Solution

Installing Node-RED Building a Node-RED Flow Adding an LED Toggle

Discussion

6.13. Serving Web Pages from the Bone by Using Apache

Problem Solution Discussion

6.14. Communicating over a Serial Connection to an Arduino or LaunchPad

Problem Solution Discussion

7. The Kernel

7.0. Introduction 7.1. Updating the Kernel

Problem Solution Discussion

7.2. Building and Installing Kernel Modules

Problem Solution Discussion

7.3. Controlling LEDs by Using SYSFS Entries

Problem Solution Discussion

7.4. Controlling GPIOs by Using SYSFS Entries

Problem Solution

Reading a GPIO Pin via sysfs Writing a GPIO Pin via sysfs

Discussion

7.5. Compiling the Kernel

Problem Solution

Downloading and Compiling the Kernel Installing the Kernel on the Bone

Discussion

7.6. Using the Installed Cross Compiler

Problem Solution Setting Up Variables Discussion

7.7. Applying Patches

Problem Solution Discussion

7.8. Creating Your Own Patch File

Problem Solution Discussion

8. Real-Time I/O

8.0. Introduction 8.1. I/O with BoneScript

Problem Solution Discussion

8.2. I/O with C and libsoc

Problem Solution Discussion

8.3. I/O with devmem2

Problem Solution Discussion

8.4. I/O with C and mmap()

Problem Solution Discussion

8.5. Modifying the Linux Kernel to Use Xenomai

Problem Solution

Patching the kernel Setting up the Bone Testing

Discussion

8.6. I/O with PRU Speak

Problem Solution

Background Prerequisites Installation Runing the Kernel Module Running the Script

Discussion

Running PRU Speak via Shell Running PRU Speak via TCP socket Looking Ahead

9. Capes

9.0. Introduction 9.1. Using a Seven-Inch LCD Cape

Problem Solution Discussion

9.2. Using a 128 x 128-Pixel LCD Cape

Problem Solution Discussion

9.3. Connecting Multiple Capes

Problem Solution Discussion

9.4. Moving from a Breadboard to a Protoboard

Problem Solution Discussion

9.5. Creating a Prototype Schematic

Problem Solution Discussion

9.6. Verifying Your Cape Design

Problem Solution Discussion

9.7. Laying Out Your Cape PCB

Problem Solution Discussion

Customizing the Board Outline PCB Design Alternatives

9.8. Migrating a Fritzing Schematic to Another Tool

Problem Solution Discussion

9.9. Producing a Prototype

Problem Solution Discussion

9.10. Creating Contents for Your Cape Configuration EEPROM

Problem Solution Discussion

9.11. Putting Your Cape Design into Production

Problem Solution Discussion

A. Parts and Suppliers

Parts Prototyping Equipment Resistors Transistors and Diodes Integrated Circuits Opto-Electronics Capes Miscellaneous

Index

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