Does TX2 support CAN FD?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hello,
I have TX2 carrier board and have checked CAN I/F worked well.
But it seems CAN FD doesn’t work.
As far as I know, tx2 support CAN FD. How can I enable CAN FD feature?
Actually, when i sent can fd signal to tx2, there were some messages as follows, and no more reactions.

mttcan c310000.mttcan can0: entered error warning state
mttcan c310000.mttcan can0: entered error passive state

what should i do to receive can fd data?

2

Hi Sung-ho,

Can you share how are you trying to use CAN FD.

3

CAN FD is just CAN, with a higher bit rate for the payload to get higher throughput on the bus.
I would presume that anyone who needs to talk to other devices that require CAN FD, would use CAN FD for that reason?

4

Hi bbasu,
there was some mistake to configure CAN FD signal generator and tx2.
mismatch of data rate between generator and tx2 caused that problem.
after resetting data rate, i could see can fd works well.

my test steps are like this

  1. defconfig modification
    set CONFIG_MTTCAN=y

  2. modprobe
    sudo modprobe can can_gw can_bcm can_raw can_dev slcan vcan

  3. ip link
    sudo ip link set can0 up type can bitrate 500000 dbitrate 4000000 fd on

  4. check
    candump -L any
    (candump is open source can utility, you may know)

Hi snarky,
yes, the reason is same as you presume

5

Hi sung-ho

I think you are korean.

is that right ?

Can i contact you and Ask you some information about Tx2 interface.

My e-mail is jungyulee@neohealthtech.co.kr

Thank you