Implementation of the LIN Communication Protocol in a Microcontroller-Based Device

This repository contains the presentation of an engineering thesis focused on the implementation of the LIN (Local Interconnect Network) communication protocol in a device based on a Raspberry Pi Pico (RP2040) microcontroller.

📌 General Information

• Author: Łukasz Rotko
• Supervisor: Dr. Eng. Jerzy Białas
• University: Cracow University of Technology
• Faculty: Faculty of Computer Science and Telecommunications
• Degree Program: Computer Science
• Year: 2024

🎯 Thesis Objective

The main objective of the thesis was to design and implement software enabling communication using the LIN protocol on a microcontroller-based device.
The solution was created as a flexible testing and diagnostic tool, primarily intended for applications in the automotive domain.

🛠️ Scope of Work

The thesis covers:

• Analysis of the LIN communication protocol based on ISO standards
• Comparison and selection of a suitable microcontroller platform
• Implementation of the LIN protocol using programmable I/O (PIO)
• Development of a LIN master device capable of:
  • Sending commands and diagnostic requests
  • Receiving and decoding responses
  • Verifying checksums and frame structure
• Use of multithreading to enable simultaneous transmission and reception
• Presentation and validation of the solution through practical tests

💻 Technologies and Tools

• Hardware: Raspberry Pi Pico (RP2040)
• Programming Language: MicroPython
• Key Libraries and Modules:
  • rp2 (PIO state machines)
  • machine
  • _thread
  • gc, time, sys
• Development Tools:
  • Thonny IDE (prototyping)
  • PyCharm + rshell (final development and automation)

📊 Presentation Content

The presentation included in this repository covers:

• Motivation and problem statement
• LIN protocol structure and timing requirements
• Hardware and platform selection rationale
• Software architecture and PIO-based implementation
• Multithreaded data reception approach
• Test results, limitations, and potential improvements
• Final conclusions

🔒 Source Code Availability

The source code is not included in this repository.

The implementation code is maintained in a separate private repository and can be made available upon request from the author.

📄 License

This repository is intended for educational and presentation purposes only.