CAN Bus Listener
Updated: July 06, 2019
CAN Listener is a simple Python script that reads the data from the CAN network and writes it to a SQLite database for other applications to use.
This script is a prerequisite for almost all avionics-related applications running on the FDR (Raspberry Pi) board.
You can download the most recent source code from GitHub: https://github.com/ExperimentalAvionics/can_listener
Assuming you already have Python installed, open a terminal windows and run the following command to install “can” library.
pip install python-can pip3 install python-can
Create a folder for the Python script /home/pi/can
Download the script from the GitHub and place it to the folder created earlier
Now we need to configure Raspberry Pi to run this script automatically at startup.
Create a config file:
sudo nano /etc/systemd/system/CAN_Listener.service
Copy-paste the following text into the file
[Unit] Description=Get CAN_Listener service running at boot [Service] ExecStart=/usr/bin/python3 /home/pi/can/can_listener.py Restart=always StandardOutput=syslog StandardError=syslog SyslogIdentifier=CAN_Listener User=pi Group=pi [Install] WantedBy=multi-user.target
Enable the service:
sudo systemctl enable CAN_Listener.service
Start the service:
sudo systemctl start CAN_Listener.service
Check the status:
systemctl status CAN_Listener.service
Some useful links: