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From: tonyg <tonythegair@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: GNAT.Serial_Communications
Date: Sat, 16 Apr 2011 05:03:13 -0700 (PDT)
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Date: 2011-04-16T05:03:13-07:00
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On Apr 16, 12:15=A0pm, Brian Drummond <br...@shapes.demon.co.uk> wrote:
> On Sat, 16 Apr 2011 03:33:39 -0700, tonyg wrote:
> > Just found the stty -a setting which gives me all settings, I think tha=
t
> > was maybe the full out put you were talking about before
>
> > out put with minicom
>
> > cs8 hupcl -cstopb cread clocal -crtscts ignbrk -brkint -ignpar -parmrk
> > Output with ada program
>
> > -parodd cs8 -hupcl -cstopb cread clocal crtscts -ignbrk -brkint -ignpar
>
> But here, Minicom has -crtscts, Gnat has crtscts
> which is pointing at a difference in the handshaking.
>
> I bowed out of this thread earlier because I have no experience with USB
> serial interfaces, or the specific Gnat library.
> But this does look like you have to find a way to turn RTS/CTS
> handshaking off.
>
> > Whoever thought a serial port did so much?
>
> heh, there are so many combinations it used to be the norm to hack serial
> interfaces with a soldering iron. If all else fails, you can always short
> pins 4 and 6 at t'other end (assuming a traditional 25 pin D connector)
> to fake the handshaking. Not recommended with a USB port...
>
> - Brian

Well spotted, I missed that after several trawls through. It also
screams out as the problem I am having. Now I just got to figure the
proper linux command to switch the handshaking off. Its interesting
that minicom seems to detect all this and configure itself so well....