Have you ever wondered what the “nervous system” of a modern vehicle actually looks like? As cars transition from simple mechanical machines to software-defined vehicles, the protocols they use have evolved from basic CAN to high-speed, structured frameworks.
Today, I’m sharing a specialized Controller Area Network (CAN) packet capture that provides a rare look at four critical automotive communication pillars in one place:
- CAN FD (Flexible Data-Rate): The high-speed evolution of CAN, allowing payloads up to 64 bytes.
- AUTOSAR NM (Network Management): The logic that coordinates how ECUs (Electronic Control Units) wake up and go to sleep.
- AUTOSAR CanIf (CAN Interface): The abstract layer that handles how PDU (Protocol Data Units) are mapped to hardware.
- Mixed Traffic: A variety of packets captured directly from real vehicle protocols.
Why This Capture?
Most public datasets are either massive (GBs of data) or purely “Classic CAN.” This package is different:
- Compact & Clean: With only 32–34 packets, you won’t get lost. You can analyze every single frame in under 10 minutes.
- Educational: It’s a perfect “primer” for students or engineers learning to use tools like Wireshark, CANoe, or SavvyCAN.
- Modern Standards: It specifically features CAN FD and AUTOSAR, which are the current industry standards for Euro 6/EV platforms.
What’s Inside?
Inside the .pcap (or .asc/.log) file, you will find:
- Standard CAN vs. CAN FD Frames: Notice the bit-rate switching and the larger 64-byte payloads.
- NM (Network Management) PDU: Watch how nodes signal their “ready to sleep” or “keep alive” status.
- Interface Layer Interaction: See how data is encapsulated before it hits the physical wire.
How to Analyze
To get the most out of this data, I recommend opening it in Wireshark.
Pro Tip: If you have the specific DBC (Database CAN) file for your project, you can load it into Wireshark or SavvyCAN to decode these hex values into human-readable signals like Engine RPM or Steering Angle.
Download the Package
Ready to dive in? Use the link below to download the https://wiki.wireshark.org/CANopen
🚀 Download the CAN FD & AUTOSAR Packet Capture (File Size: < 1MB | Format: .pcap / .log)
