Hi all,

I would like to use the RTLinux with a GPS antenna (Trimble) for a very
precise synchronisation. However, I'm very confused about what can be made
in RTLinux, what kind of protocols can be used and which pins should be used
to transport the PPS signal.

I'm studying different scenarios of configuration and I would like to know
if they are possible or not.
The better solution for me (less expensive) is the possibility of
synchronises the PC through a RS323 cable, receiving a TSIP and PPS signals.
However, I don't have reached any information about the support of the
RTLinux of this capability, or any way to make it support.
The solution of receiving the NTP and PPS signal via RS232, is also a
possibility (more expensive). Anybody knows if either the RTLinux supports
this, or need any software more.

I'll thank very much some information and tips.

Best Regards.


Carlos Parada

**********
Carlos Fonseca Parada
Portugal Telecom INova��o, S.A.
MSI - Multim�dia e Servi�os IP - Redes MultiServi�o
*   Rua Eng� Jos� Ferreira Pinto Basto - 3810 Aveiro - Portugal
Tel   +351 234 403317           Ext: 1317
Fax  +351 234 420722


> -----Original Message-----
> From: Matt Sherer [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, March 07, 2002 2:10 PM
> To:   '[EMAIL PROTECTED]'
> Subject:      RE: [rtl] smp installation
> 
> 
> Yes - the kernel reflecting that source change must be actively running to
> make any difference.
> 
> On Thu, 7 Mar 2002, Renfroe, Patrick B wrote:
> 
> > Made that change and got the same error when I attempted to compile
> RTLinux.
> > Did I need to recompile the kernel after the change?
> > 
> > -----Original Message-----
> > From: Matt Sherer [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, March 06, 2002 8:44 AM
> > To: '[EMAIL PROTECTED]'
> > Subject: RE: [rtl] smp installation
> > 
> > 
> > 
> > Can you see if you can reproduce it after raising MAX_ARG_PAGES to 64 in
> > include/linux/binfmts.h in the kernel source? 
> > 
> > On Wed, 6 Mar 2002, Renfroe, Patrick B wrote:
> > 
> > > GNU xargs version 4.1.6
> > > and
> > > GNU bash, version 2.04.21(1)-release (i386-redhat-linux-gnu)
> > > 
> > > Thanks
> > > 
> > > -----Original Message-----
> > > From: Matt Sherer [mailto:[EMAIL PROTECTED]]
> > > Sent: Tuesday, March 05, 2002 8:27 AM
> > > To: '[EMAIL PROTECTED]'
> > > Subject: Re: [rtl] smp installation
> > > 
> > > 
> > > 
> > > What version of xargs are you running, and what type/version of a
> shell?
> > > 
> > > On Tue, 5 Mar 2002, Renfroe, Patrick B wrote:
> > > 
> > > > I am installing the 2.4.4 kernel with rtlinux 3.1 on a dual
> processor
> > > > (Pentium 4) machine.  I finally got the 2.4.4 kernel to boot but
> when I
> > > > attempt to compile RTLinux I get the following error:
> > > > 
> > > > [/usr/src/rtlinux-3.1]# make
> > > > gcc -Wall -02 -o scripts/mkdep scripts/mkdep.c
> > > > Kernel version 2.4.4
> > > > for x in `find . -name Makefile`; do \
> > > >          F=`echo $x|sed 's/Makefile$//g''; \
> > > >          (cd $F; $RTL/scripts/mkdep *.c *.h *.S > .depend
> 2>/dev/null);
> > \
> > > > done
> > > > xargs: environment is too large for exec
> > > > make: *** [.depend] Error 1
> > > > 
> > > > 
> > > > What am I doing wrong.
> > > > 
> > > > Thanks for any help.
> > > > -- [rtl] ---
> > > > To unsubscribe:
> > > > echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
> > > > echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
> > > > --
> > > > For more information on Real-Time Linux see:
> > > > http://www.rtlinux.org/
> > > > 
> > > 
> > > 
> > 
> > 
> 
> -- 
> Matt Sherer
> FSMLabs, Inc.
> http://www.fsmlabs.com/
> 
> -- [rtl] ---
> To unsubscribe:
> echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
> echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
> --
> For more information on Real-Time Linux see:
> http://www.rtlinux.org/
-- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
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--
For more information on Real-Time Linux see:
http://www.rtlinux.org/

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