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Learning BeagleBone

Learning BeagleBone

By : Hunyue Yau
4.3 (4)
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Learning BeagleBone

Learning BeagleBone

4.3 (4)
By: Hunyue Yau

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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11
B. Terms and Definitions
12
Index

I2C/SPI on the BeagleBone expansion connector


I2C and SPI are two common serial buses used to interface with many commonly used peripherals. Using these buses while interfacing is more advanced than a simple beginner's task; beginners should be aware of them. In our exercises, although we looked at I2C, we focused on what is on the board itself.

Inter-Integrated Circuit

Inter-Integrated Circuit (I2C) is a two-wire serial bus interface. This interface defines a full protocol to allow different devices on the bus to be identified with addresses. Different combinations of the states of two wires are used to identify different parts of the protocol. When using I2C to interface from the BeagleBone to an I2C device, the key things to be aware of are as follows:

  • I2C signals are open collector. This allows multiple devices to be connected in parallel. However, this requires two resistors, roughly from 1000 to 4700 Ohms that connect each of the I2C signals to 3.3V. Open collector means each device...

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Learning BeagleBone
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