You need to use the wide-character variants of Windows APIs, i.e. CreateFileW
Luke ----- Original Message ----- From: "Benjamin McBride" <[EMAIL PROTECTED]> To: <pythonce@python.org> Sent: Wednesday, June 21, 2006 4:54 AM Subject: Re: [PythonCE] serial port access Thanks Gonzalo for your help. I have read both the ctypes and microsoft documentation. My understanding is that I need to use the CreateFile API function from the coredll to get a handle to the comm port. When I use ctypes: >>> windll.coredll.CreateFile I get an AttributeError saying the CreateFile function is not found. Ironically, the ReadFile, WriteFile, and CloseHandle functions are all found. Am I just missing something simple here? Ben On 6/20/06, Gonzalo Monzón <[EMAIL PROTECTED]> wrote: > Have you read the ctypes docs? > > http://starship.python.net/crew/theller/ctypes/tutorial.html > > You have to read the Microsoft docs too, search what dynamic libraries > to use and what functions to call. Study the example I posted, you have > to call these functions using ctypes: > > (openfile, readfile, writefile...) > > Don't know if somebody has implemented serial access using ctypes as to > post an example, read the docs, first you need to understand how ctypes > work -for that you should know or learn what C variable types are and > understand it almost a little bit, then the codeproject example will > come in handy- otherwise could be hard to code... Though any ctypes > example handling file or stream data may help you. Though pyserial uses > ctypes too, so you could have a look to the sources. The differences are > you have to use straight windows api calls, and pyserial calls a helper > library wich should use windows api's for windows platform. > > I have to code serial access too in the next weeks, but don't have the > time now to get my hands in it. If you are not in hurry I could post an > example when done. > > Gonzalo. > > > Benjamin McBride escribió: > > >I've got ctypes installed. However, I have not been able to find any > >examples of how I might use ctypes for serial port access. Any > >suggestions would be appreciated. > > > >Thanks, > > > >Ben > > > >On 6/20/06, Gonzalo Monzón <[EMAIL PROTECTED]> wrote: > > > > > >>Hi Benjamin, > >> > >>You can use ctypes for direct access to serial ports via windows apis > >>(openfile, readfile, writefile...) > >> > >>Note that manufacturers can have specific implementations, even they > >>must agree to PPC implementation, but you can found small differences. > >> > >>http://www.codeproject.com/system/simpleserialcomm.asp > >> > >>Regards, > >>Gonzalo > >> > >> > >>Benjamin McBride escribió: > >> > >> > >> > >>> Hi All, > >>> > >>> I need to access the serial port for my PPC application. I have > >>> been > >>> unable to locate information on this. I'm using Python 2.4.3 and > >>> PPC > >>> 2003. Previously I've used pyserial, but it appears that pyserial > >>> does > >>> not work on Windows CE. > >>> > >>> Thanks for any suggestions, > >>> > >>> Ben McBride > >>> [EMAIL PROTECTED] > >>>_______________________________________________ > >>>PythonCE mailing list > >>>PythonCE@python.org > >>>http://mail.python.org/mailman/listinfo/pythonce > >>> > >>> > >>> > >>> > >>> > >> > >> > >_______________________________________________ > >PythonCE mailing list > >PythonCE@python.org > >http://mail.python.org/mailman/listinfo/pythonce > > > > > > > > _______________________________________________ PythonCE mailing list PythonCE@python.org http://mail.python.org/mailman/listinfo/pythonce _______________________________________________ PythonCE mailing list PythonCE@python.org http://mail.python.org/mailman/listinfo/pythonce
