Book Image

Internet of Things with Python

By : Gaston C. Hillar
Book Image

Internet of Things with Python

By: Gaston C. Hillar

Overview of this book

Internet of Things (IoT) is revolutionizing the way devices/things interact with each other. And when you have IoT with Python on your side, you'll be able to build interactive objects and design them. This book lets you stay at the forefront of cutting-edge research on IoT. We'll open up the possibilities using tools that enable you to interact with the world, such as Intel Galileo Gen 2, sensors, and other hardware. You will learn how to read, write, and convert digital values to generate analog output by programming Pulse Width Modulation (PWM) in Python. You will get familiar with the complex communication system included in the board, so you can interact with any shield, actuator, or sensor. Later on, you will not only see how to work with data received from the sensors, but also perform actions by sending them to a specific shield. You'll be able to connect your IoT device to the entire world, by integrating WiFi, Bluetooth, and Internet settings. With everything ready, you will see how to work in real time on your IoT device using the MQTT protocol in python. By the end of the book, you will be able to develop IoT prototypes with Python, libraries, and tools.
Table of Contents (19 chapters)
Internet of Things with Python
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Printing numbers in LEDs with a RESTful API


Tornado is a Python web framework and asynchronous networking library. It is well known for providing great scalability due to its non-blocking network I/O. We will take advantage of the fact that Tornado makes it really easy to build a RESTful API and make it possible for any client to consume this API and print numbers in LEDs connected to the board. The following is the web page for the Tornado web server: http://www.tornadoweb.org.

In Chapter 1, Understanding and Setting up the Base IoT Hardware, we installed the pip installer to easily install additional Python 2.7.3 packages in the Yocto Linux that we are running on the board. Now, we will use a pip installer to install Tornado 4.3. We just need to run the following command in the SSH terminal to install the package.

pip install tornado

The last lines for the output will indicate that the tornado package has been successfully installed. Don't worry about the error messages related to building...