Example Linux (Ubuntu) Setup

This setup is for Raspberry Pis running Ubuntu and similar Debian distros.

1. Install MCP251XFD required drivers (example showing can-utils).

   sudo apt update
   sudo apt install -y can-utils
   

2. Enable SPI and add the MCP2518FD overlay.

   sudo nano /boot/firmware/config.txt
   

   # Add the following lines to config.txt:
   dtparam=spi=on
   dtoverlay=mcp251xfd,spi0-0,oscillator=40000000,interrupt=22,spimaxfrequency=10000000
   

3. Reboot the system.

   sudo reboot
   

4. Run CAN.
   • For CAN classic setup (example for 500 kbps, 87.5% sample point, bus error reporting):

     sudo ip link set can0 down 2>/dev/null || true
     sudo ip link set can0 type can bitrate 500000 sample-point 0.875 berr-reporting on
     sudo ip link set can0 up
     

   • For CAN FD setup (example for 1 Mbps nominal rate, 80% sample point, 4 Mbps data phase rate, bus error reporting):

     sudo ip link set can0 down
     sudo ip link set can0 type can bitrate 1000000 sample-point 0.80 dbitrate 4000000 dsample-point 0.80 fd on berr-reporting on
     sudo ip link set can0 up