You probably want ibfind() rather than ibdev(). Take a look at gpibport.cpp in the TimeLab source (drivers/shared/gpibport.cpp under the installation folder), in the enumerate_ports() function.
-- john, KE5FX Miles Design LLC > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts- > boun...@febo.com] On Behalf Of Ulrich Bangert > Sent: Thursday, January 23, 2014 3:23 AM > To: Time nuts > Subject: [time-nuts] Help for general GPIB problem > > Gentlemen, > > I am just going to improve my EZGPIB utility so that it can make use of more > than one GPIB-interface (supported by GPIB32.Dll, not Prologix). I have > been > trying to enumerate all detected interfaces by using > > ibdev(bi,0,0,T300ms,0,1) > > in a loop where bi starts with "0" and is incremented by "1" until the > result of the call gets negative. Much to my surprise this loop detects 4 > (!) interfaces GPIB0 to GPIB3 even if absolutely NO interface is connected > to the pc. > > What am I doing wrong. Is "4" the maximum number of interfaces that may > be > handled by GPIB32.Dll ???? > > What do I need to do to find the real number of detected interfaces ????? > > Best regards and TIA for your answers > > Ulrich Bangert > www.ulrich-bangert.de > Ortholzer Weg 1 > 27243 Gross Ippener > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi- > bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.