Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Message-ID: <019501c2438e$19abc620$2901a8c0@verleinix.dwthome.de> From: "Michael Besl" To: "egor duda" Cc: Subject: Re: c_cc[VTIME] not working under NT Date: Wed, 14 Aug 2002 14:28:31 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 X-Sender: 320000584226-0001@t-dialin.net Hi Egor, hi all, i found the problem! It´s not a problem with cygwin it is a problem with the SIEMENS PG and its COM2. The application i wrote works at an other PC perfect with both COM-Ports. But it is really important to use the select() command instead the c_cc[VTIME]!!! Thank your very much Mick -----Ursprüngliche Nachricht----- Von: egor duda An: Michael Besl Cc: cygwin@cygwin.com Datum: Mittwoch, 14. August 2002 14:54 Betreff: Re: c_cc[VTIME] not working under NT >Hi! > >Wednesday, 14 August, 2002 Michael Besl michael.besl@dwtgmbh.de wrote: > >MB> Hi Egor, hi all, > >MB> thanks for your mail. The program runs now perfect with the select() >MB> command, but only when i start the program in the Prompt-(MSDOS)-Window in >MB> WinNT. When i start it under VB6 then i see my program running in the >MB> Taskmanager but consuming 99% of cpu time and the timeout is never reached. >MB> It looks like that everything is running except any timer functions. What is >MB> the difference here? >MB> I have no other choice than to start the serial communication application >MB> under VB6. > >Use strace or debugger to attach to your application and look what's >going on. > >It's not very clear, also, what do you mean "running under VB6". >Is starting cmd.exe under VB6 and then running your application in cmd >window makes a difference? Have you tried to check if environment, in >which your application starts under VB6 different from your normal >environment? > >>>Monday, 12 August, 2002 Michael Besl michael.besl@dwtgmbh.de wrote: >>> >>>MB> i have written a serial communication application that uses the normal >>>MB> com-ports. I have compiled it under cygwin DLL 1.3.13 (latest >>>MB> distribution) >>>MB> and it works perfect with win98, but when i use the same DLL and the >>>MB> same >>>MB> program under winNT, then the c_cc[VTIME] seems not to work. So the >>>MB> winNT is >>>MB> waiting forever for a byte at the COM port. Do i have to change here >>>MB> something at the source that it will also run under winNT? >>> >>>It's a bug in cygwin. Hopefully, it will be fixed soon (i have a >>>working patch but it needs some cleanup). >>> >>>Meanwhile, as a workaround, you may want to use select() before read() >>>and doesn't rely on termios features like this. Using select() is a >>>cleaner solution because it would work on any type of input, not just >>>ttys. > >Egor. mailto:deo@logos-m.ru ICQ 5165414 FidoNet 2:5020/496.19 > > -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/