Learn CAN, DBC and A2L

Short illustrated guides to the protocols and file formats behind the tools. Everything is parsed in your browser.

Protocol basics

How a CAN bus shares a single wire pair, and what a frame actually contains.

CAN frame structure: what travels on the bus

Fields, arbitration, CRC and ACK — read a classic CAN data frame from SOF to EOF.

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Data formats

DBC and A2L/ASAP2 describe signals and calibration objects on top of raw frames.

DBC signal byte order: Intel vs Motorola, start bit and scaling

How an SG_ line maps bits of a CAN payload into a physical engineering value.

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A2L / ASAP2 basics: CHARACTERISTIC, MEASUREMENT and COMPU_METHOD

How an ECU description file becomes a group tree and a row-per-object export.

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On the roadmap

More topics are planned based on your feedback. Tell us which one you need next.

  • CAN FD
  • J1939
  • CANopen
  • UDS / ISO-TP
  • XCP / CCP
  • LIN
  • DoIP

Which topic should come next? Send a short email — no forms, no tracking.

lei_xu@163.com