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

Invoking the Python interpreter


We have installed the most updated versions of the most important libraries we required to interact with the features included in the Intel Galileo Gen 2 board. Now, we can invoke the Python interpreter by typing the classic command:

python

Now, enter the following two lines of Python code:

import mraa
mraa.getVersion()

The Python interpreter will display the following output:

'v0.9.0'

We imported the mraa library and called the mraa.getVersion method to check whether Python is able to retrieve the installed version of the mraa library. The result of calling the method displays the version we installed for the mraa library, and therefore, we know that Python is going to work with the version we expect. Note that the Python code is running on the Yocto Linux on the Intel Galileo Gen 2 board.

Now, enter the following line to check whether the mraa library has successfully detected the board type:

mraa.getPlatformName()

The Python interpreter will display the following...