Linux Programming

[Igor Gueths]

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Sorry I forgot to mention how you should attempt creating the device. Use mknod (man mknod) for more info.
On Wed, Nov 08, 2006 at 06:08:53AM -0800, Radical NetSurfer wrote:
> This is what I have discovered so far:
> 
> ISA slot #1: 56k Modem
> ISA slot #2: DoubleTalk
> PCI sound/network/etc.
> 
> Activate a terminal.
> Become super-user.
> type:
> /sbin/modprobe dtlk
> and immediately I hear these words coming out of the
> doubletalk card:
> "Doubletalk Found."
> 
> Ok. So far so good you would think.
> echo 'Hello World!' >/dev/dtlk
> echo 'Hello World!' 1>/dev/dtlk
> result in nothing being heard.
> 
> If I exit super-user, I get Permission Denied.
> I know one has to be very careful as super user and
> where you redirect things.
> 
> I wrote me a little gcc program that attempts to
> dtlk = open('/dev/dtlk',O_RDWR);
> and dtlk is always -1, meaning it couldn't find and/or
> open the device
> so that stops me cold.
> 
> On the one hand, apparently Fedora see's my Doubletalk
> card,
> on the other hand, I find no way to access it.
> I do not want to be in super-user mode all the time
> just to access the card, and that should not be
> necessary.
> 
> I did also discover the, as yet not too helpful, 
> C header file located here:
> /usr/include/linux/dtlk.h
> 
> and the modproble module is located where it should
> be:
> /lib/modules/2.6.15-1.2054_FC5/kernel/drivers/char/dtlk.ko
> 
> What I would greatly appreciate is a gcc code snippet
> I could compile that would cause any string I send to
> a function to simply goto the card...
> 
> I am working on downloading what source I get.
> 
> Thanks for the assist.
> 
> //Rich//
> 
> --- Luke Yelavich <themuso at themuso.com> wrote:
> 
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> > On Wed, Nov 08, 2006 at 11:34:19AM EST, Radical
> > NetSurfer wrote:
> > > I have tried all by myself to create a plugin for
> > > Xchat for Linux that would send all the chat text
> > to
> > > an appropriate card. Lets concentrate with
> > Doubletalk
> > > ISA.
> > > 
> > > I am using an inline assembly block. It compiles
> > > perfectly fine. The plugin is accepted and appears
> > to
> > > work only until I initialized the Doubletalk ISA
> > card,
> > > the Xchat abruptly closes.
> > 
> > How about you just use the dtlk module in the
> > kernel, make the /dev/dtlk 
> > device, and send your text to that?
> > 
> > I think that would be a lot easier.
> > - -- 
> > Luke Yelavich
> > GPG key: 0xD06320CE 
> > 	 (http://www.themuso.com/themuso-gpg-key.txt)
> > Email & MSN: themuso at themuso.com
> > Jabber: themuso at jabber.org.au
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> >
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> > 
> 
> 
> 
> 
>  
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- -- 
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