Example python code digital_in.py always failed once during two continue executions

[gf4t47]

Environment:

• Device: USB-1024HLS
• OS: Windows 10 Enterprise 22H2
• Connection: USB
• Python: 3.12.5, 3.10.4, 3.10.6 (All same error)
• mcculw: 1.0.0
• cbw64.dll: product version: 6.74; file version: 1.94.0.0
• MccDaq.dll: product version: 6.74; file version 2.9.00

Run https://github.com/mccdaq/mcculw/blob/master/examples/console/digital_in.py multiple times: 1st:

C:\code\mcculw\.venv\Scripts\python.exe C:\code\mcculw\examples\console\digital_in.py 
Found 1 DAQ device(s):
  USB-1024HLS (168B4DE) - Device ID = 127

Active DAQ device: USB-1024HLS (168B4DE)

FIRSTPORTA Value: 0
Bit 0 Value: 0

Process finished with exit code 0

2nd:

C:\code\mcculw\.venv\Scripts\python.exe C:\code\mcculw\examples\console\digital_in.py 
Found 1 DAQ device(s):
  USB-1024HLS (0) - Device ID = 127

 Error: The DAQ device does not support digital I/O

Process finished with exit code 0

It will keep this pattern if we keep the execution loop. Please notice that on the error case, device.unique_id is always 0 and ports number of device configuration is 0 that cause the error being thrown. https://github.com/mccdaq/mcculw/blob/master/examples/console/console_examples_util.py#L28

    for device in devices:
        print('  ', device.product_name, ' (', device.unique_id, ') - ',
              'Device ID = ', device.product_id, sep='')

It seems some resource is not cleaned up in succeed case, but always be released on failed case.

I have another piece of code bypass the configuration validation but still return the same result. It's just a different error thrown. Same pattern (1st succeed, 2nd failed) if we continue the execution loop.

from mcculw import ul
from mcculw.enums import InterfaceType, DigitalPortType


def reproduce(board_num: int, counter: int) -> None:
    ul.ignore_instacal()

    devices = ul.get_daq_device_inventory(InterfaceType.ANY)
    assert len(devices) > 0
    selected = devices[0] # USB-1024HLS
    ul.create_daq_device(board_num, selected)

    registered = ul.get_board_number(selected)
    assert registered == board_num


    data_val = ul.d_in(board_num, DigitalPortType.FIRSTPORTA)
    print(f'data_val: {data_val} @ {counter}')

    bit_val = ul.d_bit_in(board_num, DigitalPortType.FIRSTPORTA, 0)
    print(f'bit_val: {bit_val} @ {counter}')

    ul.release_daq_device(board_num)

if __name__ == "__main__":
    reproduce(0, 0)

1st:

C:\code\programs\theia\mcc_usb_1024\.venv\Scripts\python.exe C:\code\programs\theia\mcc_usb_1024\integration\reproduce.py 
data_val: 0 @ 0
bit_val: 0 @ 0

Process finished with exit code 0

2nd:

C:\code\programs\theia\mcc_usb_1024\.venv\Scripts\python.exe C:\code\programs\theia\mcc_usb_1024\integration\reproduce.py 
Traceback (most recent call last):
  File "C:\code\programs\theia\mcc_usb_1024\integration\reproduce.py", line 27, in <module>
    reproduce(0, 0)
  File "C:\code\programs\theia\mcc_usb_1024\integration\reproduce.py", line 18, in reproduce
    data_val = ul.d_in(board_num, DigitalPortType.FIRSTPORTA)
  File "C:\code\programs\theia\mcc_usb_1024\.venv\lib\site-packages\mcculw\ul.py", line 2705, in d_in
    _check_err(_cbw.cbDIn(board_num, port_type, byref(data_value)))
  File "C:\code\programs\theia\mcc_usb_1024\.venv\lib\site-packages\mcculw\ul.py", line 6128, in _check_err
    raise ULError(errcode)
mcculw.ul.ULError: Error 1: Invalid board number.

Process finished with exit code 1