Dummy_CAN_DuT

This dummy application is a simple "echo server" that builds upon SocketCAN. It sends received CAN/CANFD frames back with a different CAN ID. The dummy keeps running till it is terminated with "CTRL + C".

Configuration

The following parameters can be changed in the Dummy_CANFD_Config.h file:

Parameter	Description
FRAMEID	The frame ID that the dummy is using to send the frames back
CANFD	Enables or disables the support for CANFD
INTERFACE	The name of the interface that should be used
VERBOSE	Enables output to the console during the receive-send loop

Example

To test the dummy you can use a virtual CAN interface:

// Install the can-utils 
sudo apt-get install can-utils
 
// Modprobe is needed in the case the vcan module is not loaded.
modprobe vcan
 
// Create a virtual CAN interface
ip link add dev vcan0 type vcan
 
// Set the interface up and running
ip link set vcan0 up
 
// Compile the project
cmake .
make 
 
// Start the dummy application
./Dummy_CAN_DuT
 
// To see the CAN/CANFD messages that are send by the Dummy_CAN_DuT on 
// the virtual CAN interface open a terminal and use the candump tool.
candump vcan0
 
// Open another terminal and send a frame over the virtual CAN interface
// to the Dummy_CAN_DuT with the use of the cansend tool.
cansend vcan0 123#DEADBEEF

Documentation

For further information look at the documentation.

Helpful links

• SocketCAN documentation
• SocketCAN userspace utilities and tools