PCAP Decoder for SAE J2735 Messages

This script decodes PCAP files containing SAE J2735 messages. The decoded output is displayed in the terminal and saved to a file with the same name as the original PCAP file.

Note: The script currently outputs data as a JSON. Support for XML will be added soon.

Supported Platforms

• Linux (Primary)
• Windows and macOS (Adaptation possible)

Prerequisites

• Python 3
• tkinter
• pyshark

To install the necessary dependencies, run:

sudo ./install_dependencies.sh

Usage

1. Move your PCAP file containing J2735 messages to the logs directory.
2. Execute the script:

cd src
./pcapDecode.py

3. Follow the on-screen prompts.
4. Chosen file contents will be decoded, printed to the terminal, and written to a log of the same name in the decoded directory.

Version

Version 1.5 – June 30, 2025