Book Image

Practical Python Programming for IoT

By : Gary Smart
Book Image

Practical Python Programming for IoT

By: Gary Smart

Overview of this book

The age of connected devices is here, be it fitness bands or smart homes. It's now more important than ever to understand how hardware components interact with the internet to collect and analyze user data. The Internet of Things (IoT), combined with the popular open source language Python, can be used to build powerful and intelligent IoT systems with intuitive interfaces. This book consists of three parts, with the first focusing on the "Internet" component of IoT. You'll get to grips with end-to-end IoT app development to control an LED over the internet, before learning how to build RESTful APIs, WebSocket APIs, and MQTT services in Python. The second part delves into the fundamentals behind electronics and GPIO interfacing. As you progress to the last part, you'll focus on the "Things" aspect of IoT, where you will learn how to connect and control a range of electronic sensors and actuators using Python. You'll also explore a variety of topics, such as motor control, ultrasonic sensors, and temperature measurement. Finally, you'll get up to speed with advanced IoT programming techniques in Python, integrate with IoT visualization and automation platforms, and build a comprehensive IoT project. By the end of this book, you'll be well-versed with IoT development and have the knowledge you need to build sophisticated IoT systems using Python.
Table of Contents (20 chapters)
1
Section 1: Programming with Python and the Raspberry Pi
6
Section 2: Practical Electronics for Interacting with the Physical World
9
Section 3: IoT Playground - Practical Examples to Interact with the Physical World

Exploring the event-loop approach

We will start our code exploration by discussing an event-loop-based approach to building the sample gizmo that we just tested in the previous section.

The code for the event-loop-based approach can be found in the chapter12/version1_eventloop folder. You will find one file named main.py. Please take the time now to stop and read through the code contained in main.py to get a basic understanding of how the program is structured and how it works. Alternatively, you could add breakpoints or insert print() statements into the code and run it again to understand how it works.

How did it go, and what did you notice? If you thought yuck or got lost in the web of loops, if statements, and state variables, then well done! This means you have invested the time to consider this approach and how the code is constructed.

What I mean by an event-loop approach is demonstrated in the code by the while True: loop abbreviated on line 1:

# chapter12/version1_eventloop...