Place a 120-ohm resistor between CANH and CANL at both ends of the bus (even in simulation).

If simulation fails repeatedly, use a physical MCP2515 module ($5 on Amazon) with your development board. Debug using a logic analyzer.

The MCP2515 Proteus library is a simulation model of the MCP2515 CAN controller chip. It allows users to simulate and test CAN bus communication in Proteus, without the need for physical hardware. The library provides a virtual representation of the chip, enabling users to design, test, and validate their CAN bus systems in a simulated environment.

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