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X-Envelope-Sender-Is: Andrej DOT Borsenkow AT mow DOT siemens DOT ru (at relayer david.siemens.de)
From: "Andrej Borsenkow" <Andrej DOT Borsenkow AT mow DOT siemens DOT ru>
To: "Enoch Wu" <ewu AT scn DOT org>,
        "Eric M. Monsler" <emonsler AT beamreachnetworks DOT com>,
        <cygwin AT cygwin DOT com>
Subject: RE: Serial port interface under cygwin.  Lossy?
Date: Sun, 11 Mar 2001 10:30:10 +0300
Message-ID: <000601c0a9fd$1a9227e0$21c9ca95@mow.siemens.ru>
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>
> At 08:57 PM 3/6/01 -0800, Eric M. Monsler wrote:
> >All,
> >
> >I have been testing it by running my application on both ports, with a
> >cable between them, and sending messages.
> >
> >When I run at 115200 baud, everything works great.
> >
> >When I run at 9600 baud, I lose a significant fraction of the messages.
> >
>
[ ... snip ... ]
> >
> >  /* I think we want to disable hardware flow control.  FIXME  */
> >  newtio.c_cflag &= ~CRTSCTS;
> >
> >  /* When we read, we want completely raw access  */
> >  newtio.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
> >
> >  /* I think we want to disable software flow control.  FIXME  */
> >  newtio.c_iflag &= ~(IXON | IXOFF | IXANY);
> >
> >  tcsetattr(fd,TCSANOW,&newtio);
> >
>
> Perhaps, you do your own flow control of some sort?
>

Yep. Flow control is completely disabled, so as long as you're in sync with
partner (I presume, it runs 115Kb as well), everything is rolling. As soon as
you try to run at different speed something is lost.

You mean to say, it ever worked?

-andrej


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