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Python Programming with Raspberry Pi

You're reading from   Python Programming with Raspberry Pi Build small yet powerful robots and automation systems with Raspberry Pi Zero

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Product type Paperback
Published in Apr 2017
Publisher Packt
ISBN-13 9781786467577
Length 312 pages
Edition 1st Edition
Languages
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Authors (2):
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Sai Yamanoor Sai Yamanoor
Author Profile Icon Sai Yamanoor
Sai Yamanoor
Srihari Yamanoor Srihari Yamanoor
Author Profile Icon Srihari Yamanoor
Srihari Yamanoor
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Table of Contents (12) Chapters Close

Preface 1. Getting Started with Python and the Raspberry Pi Zero FREE CHAPTER 2. Arithmetic Operations, Loops, and Blinky Lights 3. Conditional Statements, Functions, and Lists 4. Communication Interfaces 5. Data Types and Object-Oriented Programming in Python 6. File I/O and Python Utilities 7. Requests and Web Frameworks 8. Awesome Things You Could Develop Using Python 9. Lets Build a Robot! 10. Home Automation Using the Raspberry Pi Zero 11. Tips and Tricks

Bitwise operators in Python


In Python, it is possible to perform bit-level operations on numbers. This is especially helpful while parsing information from certain sensors. For example, Some sensors share their output at a certain frequency. When a new data point is available, a certain bit is set indicating that the data is available. Bitwise operators can be used to check whether a particular bit is set before retrieving the datapoint from the sensor.

If you are interested in a deep dive on bitwise operators, we recommend getting started at https://en.wikipedia.org/wiki/Bitwise_operation.

Consider the numbers 3 and 2 whose binary equivalents are 011 and 010, respectively. Let's take a look at different operators that perform the operation on every bit of the number:

  • The AND operator: The AND operator is used to perform the AND operation on two numbers. Try this using the Python interpreter:
       >>>3&2 
       2

This is equivalent to the following AND operation:

   0 1 1 &amp...
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