USB CAN FD Converter (CFUC)

Product and its documentation is supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Producer will not accept any claim for damages howsoever arising as a result of use or failure of this product. This product is not intended for use in any medical appliance, device or system in which the failure of the product might reasonably be expected to result in personal injury.

Description

FDCAN USB Converter (CFDC) works as CAN to USB converter. Multiple features are supported like:

CAN Flexible Data Rate version 1.0 (CAN FD) supported, Microchip MCP2542FD FD CAN Transceiver

CAN version 2.0 support (ISO 11898-1: 2015)

receiving and sending of normal and extended frames, brs frames

CAN baudrate up to 8 Mbps

internal/external loop back mode, listen only mode

hardware frames filtering

socket-can via gs_usb driver

Works under windows (WSL is needed)

python-can support

device size is 26x14 mm (including USB connector)

manual selectable termination resistors

dfu bootloader with dfu-utils

Application support

Ensure the gs_usb kernel module is enabled:

sudo modprobe gs_usb 
sudo modprobe can_dev

Connect device to USB, and check if initialized properly

ip link list

There should be sth like this

10: can0: NOARP,ECHO mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10 link/can 

Connect UCCB device to CAN network.
Configure the device:

sudo ip link set can1 type can bitrate 1000000 dbitrate 4000000 fd on 

Replace can0 with the name of your device, and 500000 with the desired bitrate.
Bring the device up:

sudo ifconfig can0 up

Use the device with SocketCAN. For example,

 candump can0 

For more tools see can-utils.

Windows 10/11 support

CAN is supported out of the box with uCANViewer.2.0

For FD support on windows CANFD converter on windows you need:
1. Install WSL as described here
2. If you are on windows 10 you need to compile latest kernel with CAN support there is no full tutorial on this but take a look at this page
3.To connect USB device follow this tutorial but in short. Install usbipd Ensure that device is visible in windows in powershell

usbipd wsl list

You should see device like below

 5-1    1d50:606f  cfuc, cfuc DFU interface                                      Not attached

Attach device using (pick your number from list command, in my example 5-1 )

usbipd wsl attach --busid 5-1

Now devices should be visible in wsl, check with lsusb

All stuff tools/sources/examples etc can be found here

Bootloader

Device have support for USB DFU bootloader for new firmware upload see dfu-utils tutorial.

Drivers

Device support gs_usb driver, Device is powered directly from USB

Embedded software

Embedded software is opensource and details can be found here

Hardware

Hardware is opensource schematic and PCB is done in KiCAD schematics here

Releases

For releases see release link If you want some QUI please check SavvyCAN

Random useful commands

 
sudo ip link set can0 type can bitrate 1000000 dbitrate 4000000 fd on
sudo ifconfig can0 txqueuelen 99 #extending queue optional but if you getting queue full error consider 
sudo ip link set can0 up

#generate random FD frames on can 
cangen can0 -g 4 -I i -x -f -b

#go to bootlader
sudo dfu-util -l
sudo dfu-util -e
sudo dfu-util --dfuse-address -d 0483:df11 -c 1 -i 0 -a 0 -s 0x08000000:leave -D ucan_gsusb_fw.bin

#detailed info about can0
ip -details link show can0
#loopback test
sudo ip link set can0 type can bitrate 100000 dbitrate 1000000 fd on loopback on