Pyserial: could not configure port: (5, 'Input/output error)

Question

I've been trying to get the following two lines of Python code to run for the past two days, without much success: ``` import serial ser = serial.Serial(0) ``` Each time I run it, I get the following error: ``` Traceback (most recent call last): File "./test.py", line 4, in <module> ser = serial.Serial(0) File "/usr/lib/python2.7/dist-packages/serial/serialutil.py", line 260, in __init__ self.open() File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 280, in open self._reconfigurePort() File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 308, in _reconfigurePort raise SerialException("Could not configure port: %s" % msg) serial.serialutil.SerialException: Could not configure port: (5, 'Input/output error') ``` I'm running Ubuntu 11.10 64-bit, with Pyserial 2.5 (python-serial 2.5-2.1) and Python 2.7 (python 2.7.2-7ubuntu2) and my user is a member of the dialout group. I run Ubuntu 11.10 64-bit at work too, with the same versions of Python and Pyserial, a…

Accepted Answer

This exception is thrown if the port is not available. On Linux, you can simply specify the exact name of the port to use, like

```
ser = serial.Serial('/dev/ttyACM0')
```

Pyserial: could not configure port: (5, 'Input/output error)

Solution

Problem