CanFD ：Operation not supported

[L-SY]

I designed a PCB board based on your open-source design and flashed the candleLightFD.bin firmware onto it.
When I plug it into my Ubuntu system, it recognizes the CAN device:

ip -details link show can0
12: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
    link/can  promiscuity 0 minmtu 0 maxmtu 0 
    can state STOPPED restart-ms 0 
	  bitrate 1000000 sample-point 0.750 
	  tq 25 prop-seg 14 phase-seg1 15 phase-seg2 10 sjw 1
	  gs_usb: tseg1 1..256 tseg2 1..128 sjw 1..128 brp 1..512 brp-inc 1
	  clock 40000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

but I am unable to use CAN FD. I encounter the error RTNETLINK answers:

Operation not supported when running sudo ip link set can0 up type can bitrate 1000000 dbitrate 1000000 fd on.
RTNETLINK answers: Operation not supported

How to solve this err
Looking forward to hearing from you！

[FuzzyPt233]

Hi there! Can you please share the 'candleLightFD.bin' to me to test on my board? I do not have the develop environment on Linux so that haven't test my board.

[SmithChart]

Hi @FuzzyPt233 ,

Hi there! Can you please share the 'candleLightFD.bin' to me to test on my board? I do not have the develop environment on Linux so that haven't test my board.

we are currently shipping a fork of the upstream. We are working on mainlining - but that is still ongoing.
I've added links and the binary to our product page here:
https://linux-automation.com/en/products/candlelight-fd.html

[SmithChart]

Hi @L-SY,

I designed a PCB board based on your open-source design and flashed the candleLightFD.bin firmware onto it. When I plug it into my Ubuntu system, it recognizes the CAN device:

ip -details link show can0
12: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group default qlen 10
    link/can  promiscuity 0 minmtu 0 maxmtu 0 
    can state STOPPED restart-ms 0 
	  bitrate 1000000 sample-point 0.750 
	  tq 25 prop-seg 14 phase-seg1 15 phase-seg2 10 sjw 1
	  gs_usb: tseg1 1..256 tseg2 1..128 sjw 1..128 brp 1..512 brp-inc 1
	  clock 40000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

but I am unable to use CAN FD. I encounter the error RTNETLINK answers:

Operation not supported when running sudo ip link set can0 up type can bitrate 1000000 dbitrate 1000000 fd on.
RTNETLINK answers: Operation not supported

How to solve this err Looking forward to hearing from you！

I am sorry. I must have missed your issue. Which firmware binary did you use? Did you compile from source? Based on which commit? What Linux version are you on?