Canable 2.0 slcan ack timeout

[chengdi1988]

• Hardware: Canable 2.0 Pro from Makerbase
• Firmware: updated to Canable 2.5 of slcan from Elmue.
• The detail of slcan protocol implemented in the firmware is HERE
• DroneCAN GUI Tool: version 1.2.28
• OS: win10 64bit version=10.0.19045.6466

Phenomena:

• putty works:

V
+Board: MksMakerbase    MCU: STM32G431  DevID: 1128     Firmware: 2429224      Slcan: 100       Clock: 160      Limits: 512,256,128,128,32,32,16,16

• DroneCAN GUI Tool SLCAN ACK Timeout

• pydronecan SLCAN ACK Timeout

Python 3.12.10 (tags/v3.12.10:0cc8128, Apr  8 2025, 12:21:36) [MSC v.1943 64 bit (AMD64)]
Type 'copyright', 'credits' or 'license' for more information
IPython 9.9.0 -- An enhanced Interactive Python. Type '?' for help.
Tip: We can't show you all tips on Windows as sometimes Unicode characters crash the Windows console, please help us debug it.

In [1]: import dronecan as dc

In [5]: import logging

In [6]: logging.basicConfig(level=logging.DEBUG)

DEBUG:asyncio:Using proactor: IocpProactor
In [7]: node =dc.make_node("COM13",baudrate=1024000,bit_rate=500000)
INFO:dronecan.driver.slcan:IO process started with PID 31408
INFO:dronecan.driver.slcan:Init: Sending command b''
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'C'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'S8'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
ERROR:dronecan.driver.slcan:Could not init SLCAN adapter, will retry; error was: SLCAN ACK timeout
Traceback (most recent call last):
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 519, in _init_adapter
    wait_for_ack()
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 474, in wait_for_ack
    raise DriverError('SLCAN ACK timeout')
dronecan.driver.common.DriverError: SLCAN ACK timeout
INFO:dronecan.driver.slcan:Init: Sending command b''
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'C'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'S8'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
ERROR:dronecan.driver.slcan:Could not init SLCAN adapter, will retry; error was: SLCAN ACK timeout
Traceback (most recent call last):
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 519, in _init_adapter
    wait_for_ack()
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 474, in wait_for_ack
    raise DriverError('SLCAN ACK timeout')
dronecan.driver.common.DriverError: SLCAN ACK timeout
INFO:dronecan.driver.slcan:Init: Sending command b''
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'C'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'S8'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
ERROR:dronecan.driver.slcan:Could not init SLCAN adapter, will retry; error was: SLCAN ACK timeout
Traceback (most recent call last):
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 519, in _init_adapter
    wait_for_ack()
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 474, in wait_for_ack
    raise DriverError('SLCAN ACK timeout')
dronecan.driver.common.DriverError: SLCAN ACK timeout
INFO:dronecan.driver.slcan:Init: Sending command b''
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'C'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
INFO:dronecan.driver.slcan:Init: Sending command b'S8'
INFO:dronecan.driver.slcan:Init: Waiting for ACK...
ERROR:dronecan.driver.slcan:IO process failed
Traceback (most recent call last):
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 646, in _io_process
    _init_adapter(conn, bitrate)
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 537, in _init_adapter
    raise ex
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 519, in _init_adapter
    wait_for_ack()
  File "C:\Users\chengdi\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py", line 474, in wait_for_ack
    raise DriverError('SLCAN ACK timeout')
dronecan.driver.common.DriverError: SLCAN ACK timeout
INFO:dronecan.driver.slcan:IO process is terminating...
INFO:dronecan.driver.slcan:IO process is now ready to die, goodbye
---------------------------------------------------------------------------
DriverError                               Traceback (most recent call last)
Cell In[7], line 1
----> 1 node =dc.make_node("COM13",baudrate=1024000,bit_rate=500000)

File ~\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\node.py:554, in make_node(can_device_name, **kwargs)
    549 def make_node(can_device_name, **kwargs):
    550     """Constructs a node instance with specified CAN device.
    551     :param can_device_name: CAN device name, e.g. "/dev/ttyACM0", "COM9", "can0".
    552     :param kwargs: These arguments will be supplied to the CAN driver factory and to the node constructor.
    553     """
--> 554     can = driver.make_driver(can_device_name, **kwargs)
    555     return Node(can, **kwargs)

File ~\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\__init__.py:67, in make_driver(device_name, **kwargs)
     65         return MAVCAN(device_name, **kwargs)
     66     else:
---> 67         return SLCAN(device_name, **kwargs)
     68 elif PythonCAN is not None:
     69     return PythonCAN(device_name, **kwargs)

File ~\AppData\Local\Programs\Python\Python312\Lib\site-packages\dronecan\driver\slcan.py:751, in SLCAN.__init__(self, device_name, **kwargs)
    749     if isinstance(sig, Exception):
    750         self._tx_queue.put(IPC_COMMAND_STOP, timeout=IO_PROCESS_INIT_TIMEOUT)
--> 751         raise sig
    752 except queue.Empty:
    753     pass

DriverError: SLCAN ACK timeout
> c:\users\chengdi\appdata\local\programs\python\python312\lib\site-packages\dronecan\driver\slcan.py(751)__init__()
    749                 if isinstance(sig, Exception):
    750                     self._tx_queue.put(IPC_COMMAND_STOP, timeout=IO_PROCESS_INIT_TIMEOUT)
--> 751                     raise sig
    752             except queue.Empty:
    753                 pass

[chengdi1988]

It seems Python-CAN works as an alternative to initialize can driver:

import dronecan
import logging 
from multiprocessing import freeze_support
def main():
    logging.basicConfig(level=logging.DEBUG)
    can0= dronecan.driver.PythonCAN(channel="COM13",bitrate=500000,bustype='slcan')
    node=dronecan.node.Node(can0,node_id=100)
    print(node)

if __name__ == '__main__':
    freeze_support()
    main()

DEBUG:can:can config: {'bitrate': 500000, 'interface': 'slcan', 'channel': 'COM13'}
INFO:dronecan.node:Adding handler for service uavcan.protocol.GetNodeInfo
<dronecan.node.Node object at 0x00000288034E0230>