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hardbyte / python-can

The can package provides controller area network support for Python developers
https://python-can.readthedocs.io
GNU Lesser General Public License v3.0
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Scripts can.logger/can.viewer with peak-system over PCAN_USBBUS1 #933

Open balumbo opened 3 years ago

balumbo commented 3 years ago

I am trying to use the script can.logger with the PCAN-USB from peak-system. But it does not work unfortunately. When I use the receivetest from Peak-system everything is running. receivetest -f=/dev/pcanusb32 -b=0x852b -n=500.

When I call the can.logger script with python -m can.viewer -b 83333 -c "/dev/pcanusb32" -i pcan the following message pop up

 Traceback (most recent call last):
   File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
     "__main__", fname, loader, pkg_name)
   File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
     exec code in run_globals
   File "/home/airbus/.local/lib/python2.7/site-packages/can/viewer.py", line 502, in <module>
     main()
   File "/home/airbus/.local/lib/python2.7/site-packages/can/viewer.py", line 493, in main
     bus = can.Bus(parsed_args.channel, **config)
   File "/home/airbus/.local/lib/python2.7/site-packages/can/interface.py", line 127, in __new__
     return cls(channel, *args, **kwargs)
   File "/home/airbus/.local/lib/python2.7/site-packages/can/interfaces/pcan/pcan.py", line 173, in __init__
     self.m_PcanHandle = globals()[channel]
 KeyError: '/dev/pcanusb32'

When I use python -m can.logger -f /home/balumbo/canlog.txt -c PCAN_USBBUS1 -i pcan -b 83333 The logger started but with no entries in the log file.

Connected to PcanBus: PCAN_USBBUS1 Can Logger (Started on 2020-11-12 16:19:47.231058)

The same issue obtain with the can.viewer script. Which channel has to be used?

dmesg | grep pcan [ 4788.586812] pcan: loading out-of-tree module taints kernel. [ 4788.587792] pcan: Release_20200701_n (le) [ 4788.587793] pcan: driver config [mod] [isa] [pci] [pec] [dng] [par] [usb] [pcc] [ 4788.593143] pcan 3-1:1.0: PCAN-USB fw v8.4 [ 4788.651123] pcan: - usb device minor 32 found [ 4788.651152] usbcore: registered new interface driver pcan [ 4788.651173] pcan: major 239.

felixdivo commented 3 years ago

Channel 32 seems to just not exist in our library. You can see the available ones here. I don't know PEAK too well, but generally the channels depend on the hardware that you connected.

pkess commented 2 years ago

@balumbo : It looks like you are using the pcan adapter on linux os. Is this correct? Normally when i use the pcan adapter with linux i am using the socketcan driver provided by peak and integrated in the kernel. With this you can use the socketcanbackend of python-can Maybe you can try to list the interface with ip link and check if there is an interface named can0 or something similar