Proteus Best: Mcp2551 Library

Free; easy to install; comes with a ready-to-run example (two Arduinos communicating via virtual CAN). Cons: Does not simulate failure modes (short circuits, overvoltage); the Rs pin is non-functional.

: For pure logic simulation, connect your microcontrollers' TX/RX pins directly or through a simple inverter logic if needed. The bus-level differential signals are often not required for firmware debugging. mcp2551 library proteus best

#include <SPI.h> #include <mcp2515.h>