Kvaser USB can device name in tx2

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

for the CAN0 CAN1 is tx2 can , if I have a Kvaser usb can, what device name should be?
such as ip link can3 type can bitrate 250000? Thanks.

2

Hi,
We don’t have experience of using the device. The device name should be set in driver by calling dev_set_name(). You may check if kvaser has the driver code open source and try to grep dev_set_name in the code.

Other users may know about it and share the information.

3

Assuming you want to use the SocketCAN modules with your Kvaser USB interface, the modules have to get built and installed.
So, cretae a MakeFile with the following content:

.PHONY: all clean install uninstall

KERNEL_PATH ?= /lib/modules/`uname -r`
KDIR ?= $(KERNEL_PATH)/build

MODULE_NAME = kvaser_usb

SRC_REPO_URL = https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/
SRC_DRIVERS_DIR = drivers
SRC_MODULE_DIR = $(SRC_DRIVERS_DIR)/net/can/usb/$(MODULE_NAME)

SRC_FILES = kvaser_usb.h kvaser_usb_core.c kvaser_usb_hydra.c kvaser_usb_leaf.c Makefile

KVASER_SRC_DIR = `pwd`/$(SRC_MODULE_DIR)

all: $(addprefix $(SRC_MODULE_DIR)/, $(SRC_FILES))
	make CONFIG_CAN_KVASER_USB=m -C $(KDIR) M=$(KVASER_SRC_DIR)

$(addprefix $(SRC_MODULE_DIR)/, $(SRC_FILES)):
	wget --directory-prefix=$(SRC_MODULE_DIR) $(SRC_REPO_URL)/$@

install:
	make -C $(KDIR) M=$(KVASER_SRC_DIR) modules_install
	depmod -a

uninstall:
	rm $(addprefix $(KERNEL_PATH)/extra/$(MODULE_NAME), .ko .ko.gz .ko.xz) 2>/dev/null || true
	rmmod $(MODULE_NAME) 2>/dev/null || true
	depmod -a

clean:
	rm -rf $(SRC_DRIVERS_DIR)

To build the module run:
$ make -f MakeFile

To install the module run:
$ sudo make -f MakeFile install

To uninstall (and unload) the module, execute:
$ sudo make -f MakeFile uninstall

You may contact the Kvaser’s support team (support@kvaser.com) if you encountered any issues…

Then, by running ‘ip a’, a list of the installed “network” devices will be returned.
A CAN interface is being listed like:
10: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN group default qlen 10
link/can

meaning that I may run
$ sudo ip link set can0 type can bitrate 250000

to set the bitrate of my can0 interface to 250Kb/s