rk3566 klipper config can error

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config can hw refer to :RK3568 & Ubuntu20.04调试can口_can0: flags=193<up,running,noarp> mtu 16 unspec 00-CSDN博客

check hw:

firefly@firefly:~$ ifconfig -a
can0: flags=128<NOARP>  mtu 16
        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 10  (UNSPEC)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 68  

can1: flags=193<UP,RUNNING,NOARP>  mtu 16
        unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  txqueuelen 10  (UNSPEC)
        RX packets 4  bytes 32 (32.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2  bytes 2 (2.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 

firefly@firefly:~$ ~/klippy-env/bin/python ~/klipper/scripts/canbus_query.py can1
Traceback (most recent call last):
  File "/home/firefly/klippy-env/lib/python3.10/site-packages/can/interfaces/socketcan/socketcan.py", line 679, in _send_once
    sent = self.socket.send(data)
OSError: [Errno 100] Network is down

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/firefly/klipper/scripts/canbus_query.py", line 64, in <module>
    main()
  File "/home/firefly/klipper/scripts/canbus_query.py", line 61, in main
    query_unassigned(canbus_iface)
  File "/home/firefly/klipper/scripts/canbus_query.py", line 25, in query_unassigned
    bus.send(msg)
  File "/home/firefly/klippy-env/lib/python3.10/site-packages/can/interfaces/socketcan/socketcan.py", line 658, in send
    sent = self._send_once(data, msg.channel)
  File "/home/firefly/klippy-env/lib/python3.10/site-packages/can/interfaces/socketcan/socketcan.py", line 681, in _send_once
    raise can.CanError("Failed to transmit: %s" % exc)
can.CanError: Failed to transmit: [Errno 100] Network is down
 

fix:

firefly@firefly:~$ 
firefly@firefly:~$ sudo ip link set up can1 type can bitrate 500000
firefly@firefly:~$ 
firefly@firefly:~$ 
firefly@firefly:~$ ~/klippy-env/bin/python ~/klipper/scripts/canbus_query.py can1
Found canbus_uuid=bb6cbcb785a2, Application: Klipper
Found canbus_uuid=0463927eaa1e, Application: Klipper
Total 2 uuids found
firefly@firefly:~$ 

end:

menu->settings ->session and startup -> application autostart -> add new auto exec cmd: sudo ip link set up can1 type can bitrate 500000

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