linux - 如何在 linux(YOCTO) 中使用经典 CAN

Question

我有一些问题。当我尝试在 Yocto linux 中使用 CAN 时，会出现这样的错误。

root@condor:~/Maro# ip link set up can0 type can bitrate 500000
RTNETLINK answers: Invalid argument

但是，当我尝试打开 CAN FD 时，这是可能的。

root@condor:~/Maro# ip link set can0 type can bitrate 500000 dbitrate 2000000 fd on

如果我使用 fd off 选项，它也有错误。

root@condor:~/Maro# ip link set up can0 type can bitrate 500000 dbitrate 2000000 fd off
RTNETLINK answers: Operation not supported
enter code here

为什么？有什么不同？我检查了 ip 链接设置选项。有 fd off 选项。

ip link set can0 type can help
    Usage: ip link set DEVICE type can
            [ bitrate BITRATE [ sample-point SAMPLE-POINT] ] |
            [ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1
              phase-seg2 PHASE-SEG2 [ sjw SJW ] ]
    
            [ dbitrate BITRATE [ dsample-point SAMPLE-POINT] ] |
            [ dtq TQ dprop-seg PROP_SEG dphase-seg1 PHASE-SEG1
              dphase-seg2 PHASE-SEG2 [ dsjw SJW ] ]
    
            [ loopback { on | off } ]
            [ listen-only { on | off } ]
            [ triple-sampling { on | off } ]
            [ one-shot { on | off } ]
            [ berr-reporting { on | off } ]
            [ fd { on | off } ]
            [ fd-non-iso { on | off } ]
            [ presume-ack { on | off } ]
    
            [ restart-ms TIME-MS ]
            [ restart ]

标签： linuxyoctocan-bussocketcan