Embedded Linux | 7. Application Demo: Building a Ranging Sensor Kernel Module by Pavan | Learn Smarter
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7. Application Demo: Building a Ranging Sensor Kernel Module

The chapter demonstrates the creation of a kernel module for a ranging sensor, specifically leveraging an ultrasonic sensor for distance measurement. Emphasizing the interaction with hardware GPIO pins, it guides through writing, compiling, and interfacing user-space applications with the sensor data through device files, showcasing practical kernel module development in Linux.

Sections

  • 7

    Application Demo: Building A Ranging Sensor Kernel Module

    This section demonstrates the creation of a kernel module for an ultrasonic ranging sensor, enabling distance measurements on a Linux-based embedded system.

    Learning Practice

  • 7.1

    Introduction

    This section introduces the concept and methodology for creating a kernel module for a ranging sensor in a Linux-based embedded system.

    Learning Practice

  • 7.2

    Ranging Sensor Overview

    This section provides an overview of the ultrasonic sensor used for ranging, highlighting its key components and the formula for distance calculation.

    Learning Practice

  • 7.3

    Kernel Module Design

    The section details the design of a kernel module dedicated to interacting with a ranging sensor, outlining the steps to initialize GPIO pins, measure distance, and provide user-space access.

    Learning Practice

  • 7.4

    Writing The Ranging Sensor Kernel Module

    This section provides detailed instructions for creating a kernel module that interacts with a ranging sensor on a Linux-based embedded system.

    Learning Practice

  • 7.5

    Compile The Kernel Module

    This section outlines the process for compiling the ranging sensor kernel module using a Makefile.

    Learning Practice

  • 7.6

    Testing The Module

    This section outlines the procedure for testing the compiled kernel module for a ranging sensor.

    Learning Practice

  • 7.7

    Conclusion

    The conclusion summarizes the creation of a kernel module for an ultrasonic ranging sensor and its significance in Linux systems.

    Learning Practice

References

eeoe-el-7.pdf

Class Notes

Memorization

What we have learnt

  • Kernel modules can interact...
  • The kernel module for the u...
  • User-space applications can...

Final Test

Revision Tests