[rtl] off topic
Hi i have a question not really regarding rtlinux in special. we have to communicate with our a/d adaptor which is realtime capable on its own. the problem is that the task which is installed directly on the adaptors cpu was compiled under DOS/WINDOWS. The task running on the pc (now under linux) was compiled with egcs - which has a 4-byte alignment in contrast to the 1-byte alignment from DOS compilers. so all our structures are different in size and we only transfer bullshit to and from the a/d adaptor. does anybody know the command line switch or pragma to change the default alignment of gnu cc or egcs?? CU Alexander mailto:[EMAIL PROTECTED] -- [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/rtlinux/
Re: [rtl] Log rtl_printf calls?
are the outputs made by rtl_printf written to a logfile somewhere? I 'dmesg' lists them. cannot find them in the usual places but I would need them to do a post mortem analyze of my system after a crash... I use serial console with a terminal emulator program logging all traffic. This works quite well. Regards Gabor -- [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/rtlinux/
Re: [rtl] SEMAPHORE MODULE DONT COMPILE
2) Can I implement a semaphore in a simple way? Have you got an idea? My (restricted but totally V2 conform) semaphore implementation: ftp://gatling.aszi.sztaki.hu/pub/rtlinux/sem.tgz 3) Im trying to compile the semaphore module that comes with the rtlinux distribution. Ive done make and ... Ive lot of errors, thats imposible to put it all in the message. Can anybody tell me if have experience in compiling/using this module?? V1 API have to be enabled in include/rtl_conf.h and rtl_compat module have to be loaded before rt_ipc.o regards Gabor -- [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/rtlinux/
[rtl] loading RTAI-modules
Hello, I use RTAI-1.2 and a Linux-kernel 2.2.14 and i will try to load the RTAI-modules as user xxx. I havn't compiled in the kernel-module loader. Whats the procedure to load the RTAI-modules as user xxx and not as user root? Can I set the group-rights of insmod and rmmod to use it as user xxx? Thanks! With regards Steffen -- Steffen Hildebrandt GESKO GmbH Dresden Tiergartenstrasse 50 01219 Dresden Germany mailto:[EMAIL PROTECTED] Tel.: +49 351 43639312 Fax : +49 351 43639318 e-mail (Pivat) : mailto:[EMAIL PROTECTED] -- [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/rtlinux/
Re: [rtl] Re: PC104 A/D boards
Andrew Romanenko wrote: Hello! On Mon, 5 Jun 2000, David Schleef wrote: On Mon, Jun 05, 2000 at 03:55:04PM +0200, Vasili Goutas wrote: I'm looking for a PC104 A/D board supported by comedi with following properties 4 analog input, 4 analog output decoupled, 4 digital input, 4 digital output decoupled, hardware timer. It could also be two boards with these properties in sum. If you know such a board, please send me an email ? ComputerBoards (www.computerboards.com) makes several PC104 boards that are supposed to be identical to their ISA counterparts. Just wanted to share my experience with ComputerBoards - while I have no complaint about their boards as such (I worked with the CIO- series and had no problem), the manuals can be way too outdated. For example, I bought a CIO-PDISO16 one year ago and had to figure out the pin-out by myself because what they had in the manual had nothing to do with reality and their tech support told me to stand by for a new manual. Just a warning, you know. Andrew Nice to know. Vasili ___ comedi mailing list [EMAIL PROTECTED] http://stm.lbl.gov/cgi-bin/mailman/listinfo/comedi -- -- SensoLogic GmbHvoice: +49 40 529567-40 Dipl. Ing. technische Informatik Vasili Goutasfax: +49 40 529567-99 - Software Developer - internet: www.sensologic.de Hummelsbütteler Steindamm 78a 22851 Norderstedt, Germany Software + Sensor Systems e-mail: [EMAIL PROTECTED] internet: http://www.sensologic.de/ -- -- [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/rtlinux/
Re: [rtl] off topic
"Alexander" == Alexander Lichius [EMAIL PROTECTED] writes:
Alexander Hi
Alexander i have a question not really regarding rtlinux in
Alexander special. we have to communicate with our a/d adaptor
Alexander which is realtime capable on its own. the problem is that
Alexander the task which is installed directly on the adaptors cpu
Alexander was compiled under DOS/WINDOWS. The task running on the
Alexander pc (now under linux) was compiled with egcs - which has a
Alexander 4-byte alignment in contrast to the 1-byte alignment from
Alexander DOS compilers. so all our structures are different in
Alexander size and we only transfer bullshit to and from the a/d
Alexander adaptor. does anybody know the command line switch or
Alexander pragma to change the default alignment of gnu cc or
Alexander egcs??
Try using the following declarative construct for every involved
struct:
__attribute__ ((packed))
Test program (prints '8' without the attribute, '5' with it):
struct s {
unsigned int i;
char c;
unsigned int j;
} __attribute__ ((packed)) a;
main()
{
printf("offset = %d\n", ((unsigned int) a.j) - ((unsigned int) a));
}
Gilles([EMAIL PROTECTED])
-- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
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---
For more information on Real-Time Linux see:
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Re: [rtl] loading RTAI-modules
Thanks Tomasz, I tryed it, but there is a error message: create_module(...) : operation permitted. I think Create_module(...) is a kernel-functionand there is only permission for the kernel-module loader or root to execute create_module(...). --- Steffen Tomasz Motylewski wrote: Make some new group e.g. modadmin. Make insmod and rmmod user root group modadmin execute (x) only for owner and group. SUID bit set. add selected users to modadmin group. chown root.modadmin insmod chmod 4750 insmod OR use sudo. -- Tomek -- Steffen Hildebrandt GESKO GmbH Dresden Tiergartenstrasse 50 01219 Dresden Germany mailto:[EMAIL PROTECTED] Tel.: +49 351 43639312 Fax : +49 351 43639318 e-mail (Pivat) : mailto:[EMAIL PROTECTED] -- [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/rtlinux/
Re: [rtl] loading RTAI-modules
Steffen Hildebrandt wrote: Hello, I use RTAI-1.2 and a Linux-kernel 2.2.14 and i will try to load the RTAI-modules as user xxx. I havn't compiled in the kernel-module loader. Whats the procedure to load the RTAI-modules as user xxx and not as user root? Can I set the group-rights of insmod and rmmod to use it as user xxx? Hi Steffen, You can change the permissions (chmod 4755 file) for insmod, rmmod, modprobe. This is not a good idea as it is considered as opening a whole in your system's security. Regards ,Stuart. -- [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/rtlinux/
[rtl] Stack size problem
Hi all, Sorry, I have tried to find solution from the mail archive, but my effort failed! My program crashed quite unpredictably. I wonder it is the stack size that causes the problem. Questions: 1) What are the common stack consideration and limitation by using RTLinux; 2) How to change the stack size of a thread. Can I use thread_attr_setstacksize(). Best regard! James -- [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/rtlinux/
[rtl] RTAI-v1.3 tulip conflict
I am having a problem with rtai-1.3 conflicting with the tulip network driver. The CPU is a dual PIII 700MHz with 128M RAM, the kernel is 2.2.15. The network is fine after boot up - I can ping, rlogin, nfs and others. As soon as I do ldmod (loading basic rtai modules) the network stops responding. This seems to be related to SMP only, I have a CPU from the same manufacturer with same chipsets but single processor which works fine with rtai-1.3. I am including dmesg output below: [..] PPP line discipline registered. PPP BSD Compression module registered tulip.c:v0.91g-ppc 7/16/99 [EMAIL PROTECTED] eth0: Digital DS21143 Tulip rev 65 at 0xec00, 00:10:6F:02:1F:4E, IRQ 19. eth0: EEPROM default media type Autosense. eth0: Index #0 - Media 10baseT (#0) described by a 21142 Serial PHY (2) block. eth0: Index #1 - Media 10baseT-FD (#4) described by a 21142 Serial PHY (2) block. eth0: Index #2 - Media 100baseTx (#3) described by a 21143 SYM PHY (4) block. eth0: Index #3 - Media 100baseTx-FD (#5) described by a 21143 SYM PHY (4) block. eth0: Using user-specified media 10baseT(forced). = Network is working fine... ./ldmod = RT memory manager v0.2 Loaded. * STARTING THE REAL TIME SCHEDULER WITH NO LINUX * * FP SUPPORT AND READY FOR A PERIODIC TIMER * *** LINUX TICK AT 120 (HZ) *** *** CALIBRATED CPU FREQUENCY 698803742 (HZ) *** *** CALIBRATED APIC_INTERRUPT-TO-SCHEDULER LATENCY 3001 (ns) *** *** CALIBRATED ONE SHOT APIC SETUP TIME 499 (ns) *** * RTAI NEWLY MOUNTED (MOUNT COUNT 1) ** eth0: 21140 transmit timed out, status f06980c5, SIA 52ca 0001 fff8 8ffd0008, resetting... eth0: 21140 transmit timed out, status f06980c7, SIA 52ca 0001 fff8 8ffd0008, resetting... eth0: 21140 transmit timed out, status f06980c7, SIA 52ca 0001 fff8 8ffd0008, resetting... = Network is now broken. Anybody have ideas? I have also tried Donald Becker's latest tulip driver v0.92 with same results. The tulip driver is compiled as a kernel module. I can recover the network by doing: ifconfig eth0 down rmmod tulip remod insmod tulip /etc/rc.d/rc.inet1 Suggestions welcome. William Montgomery -- [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/rtlinux/
Re: [rtl] off topic
"Alexander" == Alexander Lichius [EMAIL PROTECTED] writes: Alexander Hi i have a question not really regarding rtlinux in Alexander special. we have to communicate with our a/d adaptor which Alexander is realtime capable on its own. the problem is that the Alexander task which is installed directly on the adaptors cpu was Alexander compiled under DOS/WINDOWS. The task running on the pc Alexander (now under linux) was compiled with egcs - which has a Alexander 4-byte alignment in contrast to the 1-byte alignment from Alexander DOS compilers You need __attribute__ ((packed)) on your structures. Look in the info file, under "C extensions", "Variable attributes". paul -- [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/rtlinux/
[rtl] Threads or Tasks?
Hi all As you´d realized, i´m a newbie rtlinux user. I´ve been wondering during the last days, which are the differents between using threads and using tasks. Sorry for bothering you, but I can´t find the answer to this. Besides, i would like to know the pros and cons of using each other. Thanks, Worm -- [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/rtlinux/
Re: [rtl] Threads or Tasks?
WORM wrote: I´ve been wondering during the last days, which are the differents between using threads and using tasks. Sorry for bothering you, but I can´t find the answer to this. The definition for both expression may vary, depending in which "computing-world" you are living in :-) So i will try this: In general, a "task" can be any kind of computing job (even an interrupt service routine), but with Linux, "task" usualy means "(user-space-)process". Every process has it´s own address-space and other processes can´t access the data except when using shared memory. Threads can (or with RTL do) run in the same address-space, sharing data. Besides, i would like to know the pros and cons of using each other. Processes are protected against each other, but this causes some overhead when switching tasks since the MMU has to be reconfigured and the TLB may has to be updated. With RTL, "real time tasks" have more in common with "threads" than with "processes" since they run in the same address space. (as like "kernel-threads" a running in the same address space as the kernel itself). Comments? Bernhard -- [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/rtlinux/
[rtl] Many .O files to one loadable .O module with GCC?
To [EMAIL PROTECTED] We are using Red Hat 6.1 on a pentium 233 Mhz with Linux version 2.2.14-rtl2.2 (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #4 Sat May 20 08:52:04 CDT 2000 We are hoping to build a single loadable (INSMOD module compatible) object module for RTLinux. The project consists of many ( 50) .C files and associated .H files. We plan to use MAKE to compile each .C + .H file separately to a .O file then build the final .O loadable module from all the individual .O files. We can't figure out how to get GCC to accept a number of .O files and create a single .O file that can be loaded into RTLinux with INSMOD. Can anyone suggest how we can build a single .O loadable module from many .O files that were individually compiled using GCC? ___ Shel Hoffman St. Louis, MO 63132 USA (314) 993-6132 voice (314) 993-3316 fax [EMAIL PROTECTED] -- [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/rtlinux/
Re: [rtl] Many .O files to one loadable .O module with GCC?
Why don't you peek the Rules.make of kernel source package ? You can use 'ld' to make a single loadable object from many 'o' files. Let me give you an example. If you are trying to build a module named 'mymodule.o' with 'object1.o', 'object2.o', and 'object3.o' then the following command can be used. ld -r -o module.o object1.o object2.o object3.o Bye. - Original Message - From: "Sheldon Hoffman" [EMAIL PROTECTED] To: "rtlinux" [EMAIL PROTECTED] Sent: Wednesday, June 07, 2000 8:12 AM Subject: [rtl] Many .O files to one loadable .O module with GCC? To [EMAIL PROTECTED] We are using Red Hat 6.1 on a pentium 233 Mhz with Linux version 2.2.14-rtl2.2 (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #4 Sat May 20 08:52:04 CDT 2000 We are hoping to build a single loadable (INSMOD module compatible) object module for RTLinux. The project consists of many ( 50) .C files and associated .H files. We plan to use MAKE to compile each .C + .H file separately to a .O file then build the final .O loadable module from all the individual .O files. We can't figure out how to get GCC to accept a number of .O files and create a single .O file that can be loaded into RTLinux with INSMOD. Can anyone suggest how we can build a single .O loadable module from many .O files that were individually compiled using GCC? ___ Shel Hoffman St. Louis, MO 63132 USA (314) 993-6132 voice (314) 993-3316 fax [EMAIL PROTECTED] -- [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/rtlinux/ -- [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/rtlinux/
Re: [rtl] Many .O files to one loadable .O module with GCC?
On Tue, Jun 06, 2000 at 06:12:01PM -0500, Sheldon Hoffman wrote: To [EMAIL PROTECTED] We are using Red Hat 6.1 on a pentium 233 Mhz with Linux version 2.2.14-rtl2.2 (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #4 Sat May 20 08:52:04 CDT 2000 We are hoping to build a single loadable (INSMOD module compatible) object module for RTLinux. The project consists of many ( 50) .C files and associated .H files. We plan to use MAKE to compile each .C + .H file separately to a .O file then build the final .O loadable module from all the individual .O files. We can't figure out how to get GCC to accept a number of .O files and create a single .O file that can be loaded into RTLinux with INSMOD. Can anyone suggest how we can build a single .O loadable module from many .O files that were individually compiled using GCC? ld -r -o big.o small1.o small2.o It is important, however, to make sure that small1.o and small2.o are compiled with the correct flags and that the .c files include the correct header files. Looking at the output of 'make modules' while compiling a kernel and watching the details really helps. The sound drivers are especially useful. dave... -- [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/rtlinux/
