Studio does not start

[beesjot]

Hello

I've successfuly installed tinymovr[GUI] (by use command pip3 install "Tinymover[GUI]") but when I try to start Tinymovr, I can see next messages:

C:\Users\beesj>tinymovr
Traceback (most recent call last):
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\config\config.py", line 55, in get_bus_config
return configs[0]
~~~~~~~^^^
IndexError: list index out of range

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in run_code
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Scripts\tinymovr.exe_main.py", line 7, in
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\gui\gui.py", line 48, in spawn
w = MainWindow(app, arguments)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\gui\window.py", line 139, in init
params = get_bus_config(buses)
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\config\config.py", line 57, in get_bus_config
raise can.CanInitializationError("No active interface found") from exc
can.exceptions.CanInitializationError: No active interface found

Can You help me in this problem?

System is Win10, Python v3.11.4. Tinymovr rev5.2 is conneceted two ways to PC: via Serial port, and via USB-CAN-A (Waveshare). Each interface is operating, but it is to little to change configuration of Tinymovr. My target is in control device via Serial port, and use internal motor Hall sensors.

Regards
beesjot

[yconst]

Hi @beesjot !

This error means that Tinymovr Studio is unable to detect a CAN bus interface. Upon startup, Studio tries to auto-detect a limited number of interface types, namely slcan and canine. For any other type, it needs to be specified as a command line argument (the bustype parameter), using the python-can compatible interface name.

For instance:

tinymovr --bus=socketcan

So you will need to find the python-can compatible interface name for your adapter first. Once you do that, you can pass it as an argument. If it is still not detected, it means that the python-can driver does not support channel auto-detection, and you will need to supply that as well, for instance:

tinymovr --bus=slcan --chan=/dev/ttyACM0

your chan parameter depends both on the OS as well as the device itself. For instance, in Windows, it is common to have a COM port as a channel:

tinymovr --bus=slcan --chan=COMXX

I hope this helps. I am converting this to a discussion as it is not an issue of studio. Please feel free to continue the discussion here.

[beesjot]

Many thanks for quick replay. I'll check this solution on monday.
Regards
beesjot

[beesjot]

Hi,
I've tried all bus options from Python-can and only "--bus=robotell" starts studio with messages:

C:\Users\beesj>tinymovr_cli --bus=robotell --chan=COM5
Tinymovr Studio 1.5.0
Timeout waiting for response when writing config value 33554112
Timeout waiting for response when writing config value 33554128
Timeout waiting for response when reading config value 1FFFFF0.
Listening for nodes...

In [1]:

but no any nodes are detected. Can You suggest me why communication isn't established? My Waveshare adapter is total(!) not compatible? Can You advice me, what I can make next?

All other bus definitions ends with messages:

C:\Users\beesj>tinymovr_cli --bus=slcan --chan=COM5
Tinymovr Studio 1.5.0
Traceback (most recent call last):
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\can\exceptions.py", line 121, in error_check
yield
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\can\interfaces\slcan.py", line 171, in _read
string = self._buffer.decode()
^^^^^^^^^^^^^^^^^^^^^
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xaa in position 0: invalid start byte

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in run_code
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Scripts\tinymovr_cli.exe_main.py", line 7, in
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\cli.py", line 81, in spawn
init_tee(can.Bus(**params))
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\tee.py", line 110, in init_tee
tee = Tee(bus, timeout)
^^^^^^^^^^^^^^^^^
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\tee.py", line 54, in init
self.flush_rx_buffer()
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\tinymovr\tee.py", line 100, in flush_rx_buffer
if not self.bus.recv(timeout=0.001):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\can\bus.py", line 98, in recv
msg, already_filtered = self._recv_internal(timeout=time_left)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\can\interfaces\slcan.py", line 199, in _recv_internal
string = self._read(timeout)
^^^^^^^^^^^^^^^^^^^
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\can\interfaces\slcan.py", line 158, in _read
with error_check("Could not read from serial device"):
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\contextlib.py", line 155, in exit
self.gen.throw(typ, value, traceback)
File "C:\Users\beesj\AppData\Local\Programs\Python\Python311\Lib\site-packages\can\exceptions.py", line 126, in error_check
raise exception_type(error_message) from error
can.exceptions.CanOperationError: Could not read from serial device
slcanBus was not properly shut down

regards
beesjot

[yconst]

It seems the first message is related to the robotell interface: https://github.com/hardbyte/python-can/blob/631f7bea71134e1bc8c1af9d6a87f1b75985ff7c/can/interfaces/robotell.py#L216 , from a first glance it seems the robotel interface is not compatible.

The second set of exceptions seem to suggest that the slcan interface times out when reading from the device.

I would suggest to find out/ask Waveshare if their adapter is compatible with python-can, and which driver should be used.

[beesjot]

Hi,
Waveshare folks can't tell if their adapter is compatible with the python libraries. They haven't tested it. So I bought another adapter which shows up in Device Manager as: candleLight USB to CAN adapter. According to https://python-can.readthedocs.io/en/stable/interfaces/gs_usb.html it should be compatible, but I still can't seem to get it to communicate with Studio.
Probably my knowledge is too small. I would appreciate a step by step explanation of what I should do.
Regards
beesjot

[yconst]

Hi,

What is the error you are getting?

In the meantime, I tried the code in the link you pasted:

import usb
import can

dev = usb.core.find(idVendor=0x1D50, idProduct=0x606F)
bus = can.Bus(
    interface="gs_usb",
    channel=dev.product,
    bus=dev.bus,
    address=dev.address,
    bitrate=250000
)

And it seems to cause the python interpreter to hang. It seems there is an issue with this driver.

If you are able to use linux, I would suggest using socketcan if you can. This approach is much more reliable. The candlelight-based adapter should be compatible with socketcan (our CANine using candlelight is)