Hi!...
I made a high precision time syncronization system using a GPS receiver and RTLinux. I wrote an article describing this system that was presented in the September's 2001 ION Conference in Salt Lake City (www.ion.org). If any one is interested please contact me and I will gladly send a copy of that article. S�rgio Rui Silva Carlos Parada writes: > > 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 > echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] > -- > For more information on Real-Time Linux see: > http://www.rtlinux.org/ > -- Crie o seu Email Gr�tis no Clix em http://registo.clix.pt/ -- [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/
