Can Sniffer

About

Can Sniffer is a lightweight application built on top of ObdMetrics that captures CAN bus traffic using Elm327 BT compatible adapters and either saves it to a csv file or stream data through network using canlogserver schema. This data can later be read and visualized using SavvyCAN either by loading the csv or having live update from device.

Solution Architecture

YouTube overview video

Csv file schema

Application outputs csv file with following schema

Time Stamp,ID,Extended,Dir,Bus,LEN,D1,D2,D3,D4,D5,D6,D7,D8

Features

• Capturing can bus traffic and dumping into file.
• Streaming can bus data over the network.

Building and running

Build command

	mvn clean install

Run command

	java -jar .\target\can-sniffer-0.0.1-SNAPSHOT-jar-with-dependencies.jar

Configuration

Application during startup is looking for configuration within execution dir. File should be named config.yaml and contains configuration like bellow. If file does not exists in the specified location, default one is loaded.

Configuration file scheme

• adapterName: BT OBD Adapter name, e.g: "AABBCC112233"
• logFile.fileName: csv file name in which data will be saved
• duration: duration of the process, in milliseconds
• stnEnabled: enable if you have stn based adapter e.g: stn2120
• mode: CAN_SERVER | LOG_FILE - indicates whether data should be dumped into file or application should behave as network server.
• canServer.port - port on which application listen to in server mode
• debug: false | true - enables debug logging

CAN_SERVER example configuration

adapterName: "AABBCC112233"
duration: 30000
stnEnabled: false
mode: CAN_SERVER 
debug: true 

canServer:
   port: 28700 
      

LOG_FILE example configuration

adapterName: "AABBCC112233"
duration: 30000
stnEnabled: false
mode: LOG_FILE
debug: true 
logFile:
   fileName: "./giulia.%d.csv"