hi,
in mail http://iem.kug.ac.at/mailinglists/pd-list/2001-12/0159.html from mark newman seems to be a solution for the win2k comport object: ////////////////////////////////////////////////////////////// I grabbed Winfried Ritsch's comport object and code from http://iem.kug.ac.at/ritsch/programmier/pd_externals/
... as I assume you have already done, and I was able to get it to work on Win2K for reading data, though I had to make one minor adjustment. I changed the arguments to CreateFile inside the open_serial method so that it uses non-overlapped (i.e., blocking) reads. Here's the actual call, with my changes:
fd = CreateFile( sys_com_port[com_nr],
rw,
0,
0,
OPEN_EXISTING,
/* FILE_FLAG_OVERLAPPED */ 0, // changed to non-overlapped --mwn
0);
... and now it works. I believe this is the correct way to open the port, since the code is in fact polling (every millisecond, by default) and not in fact using asynchronous reads. Changing the object to use overlapped/asynchronous reads would probably be an even better fix, but that'll have to be for another time. Unfortunately I can't provide an example patch offhand that uses the fixed comport since for performance reasons I had to further modify the object to work with the A/D converter I was talking to--so it's not really the same object anymore. /////////////////////////////////////////////////////////////////
unfortunately i m not in possession of a win c compiler. could somebody plz help me out to compile it ? i would assume that there are more people out there who would be interested in having it working under win2k.
thx
erich