CAN Bus - T3 Foundation Gemstone Project

By the end of this section, you will have learned how to create a virtual CAN interface on the Gemstone development board.

In the Gemstone operating system, a virtual CAN interface can be created, allowing data communication without the need for any additional hardware.

CanBUS Connection

After connecting to the Gemstone operating system, install the kernel-module-vcan-6.1.83-ti module to create a virtual CAN interface.

sudo apt install picocom kernel-module-vcan-6.1.83-ti

Activate the installed module using the modprobe command.

sudo modprobe vcan

Follow the commands below to create the virtual CAN interface.

sudo ip link add dev vcan0 type vcan
sudo ip link set up vcan0

Create a script file named can-test.sh and open it.

touch can-test.sh
nano can-test.sh

Copy and paste the following code into the can-test.sh file. Save and close the file.

#!/bin/bash

while :
do
   cansend vcan0 123 #AABBCCDDEE112233
   sleep 1
done

Install the can-utils package to use commands such as cansend and candump for sending and receiving CAN packets.

sudo apt install can-utils

Open two terminals.
Start listening to the CAN interface from the first terminal.

candump vcan0

Run the can-test.sh script from the second terminal.

./can-test.sh

Communication over virtual CAN interface