Arduino Uno / Nano CANBUS

clintonellis1992 · November 11, 2021, 11:08am

Can anyone assist me please, i am using the following CANbus module MCP2515

and im using the following library: https://github.com/coryjfowler/MCP_CAN_lib

The example sketch i am using is the CANbus receive:

coryjfowler/MCP_CAN_lib/blob/master/examples/CAN_receive/CAN_receive.ino

// CAN Receive Example
//

#include <mcp_can.h>
#include <SPI.h>

long unsigned int rxId;
unsigned char len = 0;
unsigned char rxBuf[8];
char msgString[128];                        // Array to store serial string

#define CAN0_INT 2                              // Set INT to pin 2
MCP_CAN CAN0(10);                               // Set CS to pin 10


void setup()
{
  Serial.begin(115200);
  
  // Initialize MCP2515 running at 16MHz with a baudrate of 500kb/s and the masks and filters disabled.

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In the serial monitor i get the following output which is correct:
13:04:50.546 -> Extended ID: 0x189C007E DLC: 8 Data: 0x64 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF

I am using extended ID and j1939, the CANbus message is a 100 value or 0x64
How to i get a relay to trigger when this extended ID and 0x64 comes through?

Basically i want to listen to certain CANbus messages and trigger relays when the messages come through. I am willing to pay someone to assist me with this project.