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Can't connect to a kvaser device with 4.6.1

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评估

难度
3/5
预计耗时
1-2 天
新手友好度
58/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
冷清
技术栈
linux, python

调研方向

从 traceback 中报告的 canIoCtlInit 调用处开始检查 can/interfaces/kvaser/canlib.py,并比较 python-can 4.5.0 和 4.6.1 下的最小连接脚本。检查 Kvaser 接口初始化路径,并验证该脚本在较新版本中能够以 500000 的比特率连接到通道 0,且不会产生 CANLIBOperationError。

由索引模型根据 Issue 内容生成。

描述

bug
Describe the bug

No connection to a kvaser device with a simplest demo script (linux, latest kvaser driver CANlib 8.50,
4.5.0 - works perfectly.

To Reproduce

OS: Xubuntu 22.04.5 LTS x86_64 Kernel: 5.15.0-100-generic
driver Kvaser Linux Drivers and SDK 5.51.461
CANlib 8.50 (file libcanlib.so.1.10.12)

  • Simplest script and python-can 4.5.0
import can.interfaces.kvaser
try:
    bus = can.interface.Bus( interface='kvaser', channel=0, bitrate=500000)
    bus.shutdown()
except Exception :
    print("Error")

works for me perfectly.

  • update to a new version (4.6.1).
    Error

or without try/except boundaries:

  File "/home/st/Documents/PyScripts/BLapp/tmp.py", line 4, in <module>
    bus = can.interface.Bus(interface='kvaser', channel=0, bitrate=500000)
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/util.py", line 392, in wrapper
    return f(*args, **kwargs)
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/interface.py", line 137, in Bus
    bus = cls(channel, **kwargs)
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/interfaces/kvaser/canlib.py", line 563, in __init__
    canIoCtlInit(
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/interfaces/kvaser/canlib.py", line 102, in __check_status_operation
    raise CANLIBOperationError(function, result, arguments)
can.interfaces.kvaser.canlib.CANLIBOperationError: Function canIoCtl failed - Error in parameter [Error Code -1]
Expected behavior

I expected in to connect to the bus as 4.5.0 did.

Additional context

OS and version: Xubuntu 22.04.5 LTS x86_64 Kernel: 5.15.0-100-generic
Python version: 3.10.12
python-can version: 4.6.1
python-can interface/s (if applicable): kvaser

Traceback and logs
import can
import can.interfaces.kvaser
try:
    bus = can.interface.Bus( interface='kvaser', channel=0, bitrate=500000)
    bus.shutdown()
except Exception :
    print("Error")

  File "/home/st/Documents/PyScripts/BLapp/tmp.py", line 4, in <module>
    bus = can.interface.Bus(interface='kvaser', channel=0, bitrate=500000)
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/util.py", line 392, in wrapper
    return f(*args, **kwargs)
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/interface.py", line 137, in Bus
    bus = cls(channel, **kwargs)
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/interfaces/kvaser/canlib.py", line 563, in __init__
    canIoCtlInit(
  File "/home/st/Documents/PyScripts/BLapp/venv/lib/python3.10/site-packages/can/interfaces/kvaser/canlib.py", line 102, in __check_status_operation
    raise CANLIBOperationError(function, result, arguments)
can.interfaces.kvaser.canlib.CANLIBOperationError: Function canIoCtl failed - Error in parameter [Error Code -1]


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