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Filename : scan.py

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#! /usr/bin/env python
"""\
Scan for serial ports.

Part of pySerial (http://pyserial.sf.net)
(C) 2002-2003 <cliechti@gmx.net>

The scan function of this module tries to open each port number
from 0 to 255 and it builds a list of those ports where this was
successful.
"""

import serial

def scan():
    """scan for available ports. return a list of tuples (num, name)"""
    available = []
    for i in range(256):
        try:
            s = serial.Serial(i)
            available.append( (i, s.portstr))
            s.close()   # explicit close 'cause of delayed GC in java
        except serial.SerialException:
            pass
    return available

if __name__=='__main__':
    print "Found ports:"
    for n,s in scan():
        print "(%d) %s" % (n,s)