MCP2515 basic setup with Macchina

gistfile1.ino

#include <SPI.h> // Arduino SPI Library
#include <MCP2515.h>

// Pin definitions specific to how the MCP2515 is wired up.
#define CS_PIN 85
#define RESET_PIN 7
#define INT_PIN 84

// Create CAN object with pins as defined
MCP2515 CAN(CS_PIN, RESET_PIN, INT_PIN);

void setup() {
  Serial.begin(115200);
  
  Serial.println("Initializing ...");

  // Set up SPI Communication
  // dataMode can be SPI_MODE0 or SPI_MODE3 only for MCP2515
  SPI.setClockDivider(SPI_CLOCK_DIV2);
  SPI.setDataMode(SPI_MODE0);
  SPI.setBitOrder(MSBFIRST);
  SPI.begin();
  
  // Initialise MCP2515 CAN controller at the specified speed and clock frequency
  // In this case 125kbps with a 16MHz oscillator
  // (Note: This is the oscillator attached to the MCP2515, not the Arduino oscillaltor)
  if(CAN.Init(250,16))
  {
    Serial.println("MCP2515 Init OK ...");
  } else {
    Serial.println("MCP2515 Init Failed ...");
  }

  Serial.println("Ready ...");
}