Ron Jackson wrote: > Dennis Lee Bieber wrote: >> On Wed, 07 Feb 2007 11:14:39 -0800, Ron Jackson >> <[EMAIL PROTECTED]> declaimed the following in >> comp.lang.python: >> >> >>>I am using Python 2.5 on Windows XP. I have installed Pyserial and >>>win32all extensions. >>> >> >> 2.4 on XP Pro SP2... >> >> >>>When I try to run the example program scan.py (included below), or any >>>other program using pyserial, as soon as it hits the statement: >>> >>>s = serial.Serial(i) >>> >> >> >>>>>import serial >>>>>for i in range(256): >> >> ... try: >> ... print i, >> ... s = serial.Serial(i) >> ... print s.portstr >> ... s.close() >> ... except serial.SerialException: >> ... print >> ... >> 0 COM1 >> 1 >> 2 COM3 >> 3 >> 4 >> 5 >> 6 >> 7 >> 8 >> 9 >> 10 >> 11 >> and on and on... >> >> >>>What do I need to do to fix this? Thanks for the help! >> >> >> Does the serial port module require a compile for use with 2.5? >> Well, with only one download since Python 2.2, guess not... >> >> Something glitched in win32? Sorry, I don't know... However, since >> those are Python source files, you could always plug in some debugging >> lines around that win32 call to see what actually is there. Do you have >> any unnatural serial ports on the machine? (Like a USB<>serial >> converter?) > > Trying your program, I get the same error 'Incorrect function.': > > Traceback (most recent call last): > File "<pyshell#9>", line 4, in <module> > s = serial.Serial(i) > File "C:\Python25\Lib\site-packages\serial\serialutil.py", line 156, in > __init__ > self.open() > File "C:\Python25\lib\site-packages\serial\serialwin32.py", line 57, in > open > win32file.SetupComm(self.hComPort, 4096, 4096) > error: (1, 'SetupComm', 'Incorrect function.') > > > I tried PySerial on a laptop, also running XP Home SP2, and both the > example program and the program you suggested work fine on the laptop. > > The desktop computer that is giving me the error doesn't have any > unnatural serial ports on it currently. The laptop worked fine, either > with a USB device emulating COMM6 present or with the USB device > disconnected. > > I checked and both machines are running the same version of win32file, > which is site-packages\win32\win32file.pyd, 88 KB dated 9/22/2006. > > So my question is: > > Why would the statement win32file.SetupComm(self.hComPort, 4096, 4096) > > work just fine on one machine and not the other? > > win32file.pyd can't be opened like a .py file, and I don't know what the > rather cryptic error 'Incorrect function.' is trying to tell me. Does > anyone who is familiar with win32file have an idea what the problem is? > > Thanks for the help! > > -- Ron
I am now facing your problem ... on a machine that used to work fine. Have you figured it out ? Could it be a conflict between pyserial and pywin32 ? hg -- http://mail.python.org/mailman/listinfo/python-list
