You're reading from TinyML Cookbook - Second Edition

Product type Book

Published in Nov 2023

Publisher Packt

ISBN-13 9781837637362

Pages 664 pages

Edition 2nd Edition

Languages

Concepts

Machine Learning

Author (1):

Gian Marco Iodice

Table of Contents (16) Chapters

Preface

1. Getting Ready to Unlock ML on Microcontrollers

2. Unleashing Your Creativity with Microcontrollers

3. Building a Weather Station with TensorFlow Lite for Microcontrollers

4. Using Edge Impulse and the Arduino Nano to Control LEDs with Voice Commands

5. Recognizing Music Genres with TensorFlow and the Raspberry Pi Pico – Part 1

6. Recognizing Music Genres with TensorFlow and the Raspberry Pi Pico – Part 2

7. Detecting Objects with Edge Impulse Using FOMO on the Raspberry Pi Pico

8. Classifying Desk Objects with TensorFlow and the Arduino Nano

9. Building a Gesture-Based Interface for YouTube Playback with Edge Impulse and the Raspberry Pi Pico

10. Deploying a CIFAR-10 Model for Memory-Constrained Devices with the Zephyr OS on QEMU

11. Running ML Models on Arduino and the Arm Ethos-U55 microNPU Using Apache TVM

12. Enabling Compelling tinyML Solutions with On-Device Learning and scikit-learn on the Arduino Nano and Raspberry Pi Pico

13. Conclusion

14. Other Books You May Enjoy

15. Index

Using interrupts to read the push-button state

The previous recipe showed how to read digital signals with the GPIO peripheral. However, the proposed solution is inefficient because the CPU wastes clock cycles waiting for the button to be pressed while it could perform other tasks in the meantime. Furthermore, this could be a situation where we would keep the CPU in low-power mode when there are no other tasks to run.

Therefore, this recipe will show you how to change the sketch developed in the previous recipe to read the push-button state efficiently using interrupts.

Getting ready

Let’s prepare this recipe by learning what an interrupt is and which Mbed OS API we can use to read the push-button efficiently.

Working with interrupts using the Mbed OS API

An interrupt is a signal that temporarily pauses the main program to address an event through a dedicated function known as an interrupt handler or interrupt service routine (ISR). When the ISR ends the...