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Re: Serial Port Issue

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  Re: Serial Port Issue Phil Birkelbach <phil@petrasoft.net> - 2013-04-22 10:13 -0500

#44088 — Re: Serial Port Issue

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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>-- 
> http://mail.python.org/mailman/listinfo/python-list

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