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  • Book Overview & Buying Learning BeagleBone
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Learning BeagleBone

Learning BeagleBone

By : Hunyue Yau
4.3 (4)
Buy this Book
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Learning BeagleBone

Learning BeagleBone

4.3 (4)
By: Hunyue Yau
Buy this Book

Overview of this book

This book is for new BeagleBone owners who are looking to quickly get their microboard up and running. It would be helpful to have an understanding of embedded concepts or Linux but neither is essential.
Table of Contents (13 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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Disclaimer
Lock Free Chapter
1
1. Introducing the Beagle Boards
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1. Introducing the Beagle Boards
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The Beagle board family
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The Beagle boards
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Summary of the Beagle board family
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Congratulations on selecting a BeagleBone board
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Unboxing and powering up your BeagleBone
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The Windows configuration
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The Linux configuration
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Useful PC software for your BeagleBone
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Accessing the BeagleBone
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Useful accessories
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Summary
2
2. Software in the BeagleBone
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2. Software in the BeagleBone
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System software in the BeagleBone
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Distributions on the BeagleBone
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Installing a distribution in the BeagleBone
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Nonsystem software in the BeagleBone
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Summary
3
3. Building an LED Flasher
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3. Building an LED Flasher
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Setting up a foundation for the exercises
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Hello, World for the BeagleBone
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Flashing the LEDs
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Using the controls in a program
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Summary
4
4. Refining the LED Flasher
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4. Refining the LED Flasher
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The I2C bus
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The I2C devices on the BeagleBone
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User interfaces
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Loading your first web page
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Summary
5
5. Connecting the BeagleBone to Mobile Devices
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5. Connecting the BeagleBone to Mobile Devices
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Mobile devices
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Connectivity options
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Full network connection options
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Protocol-specific connectivity
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Mobile device connections
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Carrier limitations
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Bluetooth wireless technology
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Profiles
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BLE options
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Near Field Communication and the BeagleBone
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Summary
6
6. Recovering from the Mistakes
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6. Recovering from the Mistakes
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Symptoms of the mistakes
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Troubleshooting the BeagleBone
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Repairing the BeagleBone
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Summary
7
7. Interfacing with the BeagleBone
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7. Interfacing with the BeagleBone
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Electrical engineering in a nutshell
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Expansion headers
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Transistors
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Connecting LEDs to the BeagleBone
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Controlling relay with a BeagleBone
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Connecting switches to the BeagleBone
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I2C/SPI on the BeagleBone expansion connector
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Summary
8
8. Advanced Software Topics
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8. Advanced Software Topics
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The BeagleBone programming with the C and Linux APIs
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User space versus kernel space on the BeagleBone
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Kernel drivers on the BeagleBone
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Device trees on the BeagleBone
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Pinmuxing on the BeagleBone
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Figuring out the pinmux on the BeagleBone
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The BeagleBone and real-time performance
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Summary
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9. Expansion Boards and Options
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9. Expansion Boards and Options
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The BeagleBone capes
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USB devices on the BeagleBone
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Summary
10
A. The Boot Process
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A. The Boot Process
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What happens when the power is turned on
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Linux and beyond
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Alternative boot uses
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Summary
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B. Terms and Definitions
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B. Terms and Definitions
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Index
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Index

Device trees on the BeagleBone

One feature that was introduced in the Linux kernel is the concept of a device tree. The goal of the device tree is to allow one kernel binary to support different hardware by changing the device tree. A device tree is a data structure used by the kernel to describe the underlying hardware.

The device tree data informs the kernel about the following:

  • Physical address of the hardware blocks, for example, the I2C block on the BeagleBone is supported by the same driver as the one on the original Beagle boards. However, they differ by the address.

  • Any hardware revision differences.

  • Name of the driver the hardware uses. This is often specified as a compatible attribute.

  • Hardware resources such as interrupts and DMA resources used.

  • Register settings specific to the hardware.

The device tree information depends on the driver using it. There can be other attributes such as GPIOs to enable functions.

Like building a kernel, the device tree is an advanced topic. We will go through...

CONTINUE READING
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Tech Concepts
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Programming languages
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Learning BeagleBone
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