Have you tried 'port=20'?
The documentation says that the port numbering starts at zero. I don't use
Windows so I can't test it for you.
You could also try port="COM21"
Phil
On Apr 22, 2013, at 4:34 AM, chandan kumar wrote:
> Hi,
>
> I'm new to python and trying to learn serial communication using python.In
> this process i'm facing serial port issues.Please find the attached
> COMPorttest.py file ,correct me if anything wrong in the code.With my code
> it's always goes in to exception.I noted down the the COM port number from
> windows device manager list.
>
> Operating system: XP
> Python Ver: 2.5
> Pyserial: 2.5
>
> Even i tried from python shell passing below commands
>
> import serial
> ser=ser=serial.Serial(port=21,baudrate=9600)
>
> I observe below error on python shell
>
> File "C:\Python25\lib\serial\serialwin32.py", line 55, in open
> raise SerialException("could not open port: %s" % msg)
> SerialException: could not open port: (2, 'CreateFile', 'The system cannot
> find the file specified.')
>
> Thanks in advance.
>
> Best Regards,
> Chandan.
>
>
>
> <COMPortTest.py><DeviceManager.PNG>--
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