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Can bus monitoring tool based on arduino and can bus shield. Implements CAN ASCII/SLCAN protocol compatible with Lawicel CAN232/CANUSB. Can be used for monitoring low speed CAN (interior can bus of most cars, less than 500kbps). For higher speeds serial port can become a bottleneck in case data density is high.

License: MIT License

C++ 85.82% C 14.18%

arduino-canbus-monitor's Introduction

Arduino CAN Bus Monitor

This is a fork of arduino-canbus-monitor meant to work with the Longan Labs / SSI CANBed v1.

The CANBed v1 is an Atmega32U4 based board with MCP2515 and MCP2551 CAN chips.

This Arduino sketch turns the CANBed v1 into a USB-to-CAN tranceiver using the slcan (CAN over serial) protocol.

See the upstream repo for full protocol details.

Using with Linux

Install `can-utils`

On Ubuntu and other Debian-based distros can-utils package is included into standard repositories:

sudo apt install can-utils

For other distros please follow respective instructions, start from here https://github.com/linux-can/can-utils

Create CAN Device

sudo slcand -o -c -s6 -S 115200 /dev/ttyAMC0
sudo ip link slcan0 up

Replace /dev/ttyAMC0 with the serial device of the CANBed. The 115200 is the default serial baudrate. Update this command if you've changed it in the sketch.

Run Your Scanner

You can use one of the tools included with can-utils:

candump slcan0

Or run your own which is compatible with Linux SocketCAN.

Disconnect CAN Device

sudo killall slcand

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