You're reading from DIY Microcontroller Projects for Hobbyists The ultimate project-based guide to building real-world embedded applications in C and C++ programming

Product type Paperback

Published in Jul 2021

Publisher Packt

ISBN-13 9781800564138

Length 320 pages

Edition 1st Edition

Languages

Tools

ARM Cortex

Concepts

Microcontroller

Authors (2):

Miguel Angel Garcia-Ruiz

Pedro Cesar Santana Mancilla

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Table of Contents (16) Chapters

Preface

1. Chapter 1: Introduction to Microcontrollers and Microcontroller Boards

2. Chapter 2: Software Setup and C Programming for Microcontroller Boards FREE CHAPTER

3. Chapter 3: Turning an LED On or Off Using a Push Button

4. Chapter 4: Measuring the Amount of Light with a Photoresistor

5. Chapter 5: Humidity and Temperature Measurement

6. Chapter 6: Morse Code SOS Visual Alarm with a Bright LED

7. Chapter 7: Creating a Clap Switch

8. Chapter 8: Gas Sensor

9. Chapter 9: IoT Temperature-Logging System

10. Chapter 10: IoT Plant Pot Moisture Sensor

11. Chapter 11: IoT Solar Energy (Voltage) Measurement

12. Chapter 12: COVID-19 Digital Body Temperature Measurement (Thermometer)

13. Chapter 13: COVID-19 Social-Distancing Alert

14. Chapter 14: COVID-19 20-Second Hand Washing Timer

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Programming the I2C interface

In this section, we will review how to obtain useful data from the MLX90614 temperature sensor to be transmitted using the I2C protocol, also known as IIC. It is a serial data communication protocol that is practical for interfacing sensors, LCDs, and other devices to microcontroller boards that support I2C. The next section defines what I2C is.

The I2C protocol

I2C is a synchronous serial communication protocol that allows interconnecting sensors, microcontrollers, displays, analog-to-digital converters (ADCs), and so on, at a short distance using a common bus (a bus works as a main digital road). The I2C bus is composed of a few lines (wires) that all the devices share and use for transmitting and exchanging data. The I2C protocol is practical and beneficial because it uses only two wires for data communication. Another benefit of I2C is that in theory, it can support up to 1,008 devices connected to the same I2C bus! It is also worth mentioning...