December 2014
Intermediate to advanced
600 pages
15h 2m
English
Content preview from Exploring BeagleBone: Tools and Techniques for Building with Embedded Linux
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
CHAPTER 8 Interfacing to the BeagleBone Buses
This chapter describes bus communication in detail, explaining and comparing the different bus types that are available on the BeagleBone. It describes how you can configure them for use, and how you can communicate with and control I2C, SPI, and UART devices, using both Linux tools and custom-developed C and C++ code. Practical examples are provided that use a low‐cost accelerometer, a serial shift register, and the Arduino microcontroller. After reading this chapter, you should have the skills necessary to interface the BeagleBone to almost all of its available bus types.
Equipment Required for This Chapter:
- BeagleBone Black (BBB)
- ADXL345 accelerometer on a breakout board
- 74HC595 shift register, LEDs, and resistors
- 3.3 V Arduino microcontroller or 5 V Arduino microcontroller and logic‐level translator
Further details on this equipment and chapter are available at www.exploringbeaglebone.com/chapter8/.
Introduction to Bus Communication
In Chapter 6, the use of GPIOs and analog I/O is discussed in detail, which makes it clear how you can connect the BBB to standalone components. This chapter examines more complex communications that can be performed using the bus interfaces that are available on the BBB. Bus communication is a mechanism that enables data to be transferred between the high‐level components of an embedded platform, using standardized communications protocols. The two most commonly used embedded systems buses ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.