The can2040 project is a software CAN bus implementation for Raspberry Pi rp2040 and rp2350 micro-controllers. It enables these chips to implement CAN bus using a standard CAN transceiver chip. The code supports reading and writing CAN 2.0B data frames at rates up to 1Mbit per second.

For further information see:

• Features: Details about this software CAN bus implementation.
• API: The can2040 programmer interface.
• Tools: Useful testing and deployment tools.
• Code Overview: Information on can2040 internals (for developers working on can2040 itself).
• Releases: History of can2040 releases.