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

Logging to files in the local storage


Python provides a powerful and flexible logging API provided by a standard library module. We can use the logging module to track events that happen when our IoT applications run on the board and save them on a log file by taking advantage of the local storage options.

Now, we will make changes to our last version of our previous example that worked with the mraa library to log the voltage values read from the ambient light sensor. We only want to log the new voltage value when the ambient light changes, that is, when the value for BoardInteraction.darkness_sensor.ambient_light mutates. We will use the previous code as a baseline to add the new logging features. The code file for the sample was iot_python_chapter_06_03.py.

We will replace the __main__ method. The following lines show the new version that adds logging capabilities. The new lines of code are highlighted and the code file for the sample is iot_python_chapter_06_05.py.

import logging

if __name__...