RTAI_SERIAL
05 Aug 2014 03:33 - 05 Aug 2014 03:40 #49503
by H18
RTAI_SERIAL was created by H18
I have installed EMC per the 12.04 setup. I have code to perform serial in real time via the RTAI_SERIAL HAL module. I am working agianst a serial port not a USB serial port. Is there a way to get this module in the configuration?
I am not sure this is the correct forum catagory to post in. Let me know if there is a more approriate area.
Thanks,
Eric
I am not sure this is the correct forum catagory to post in. Let me know if there is a more approriate area.
Thanks,
Eric
Last edit: 05 Aug 2014 03:40 by H18. Reason: spelling
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05 Aug 2014 14:55 #49515
by ArcEye
Replied by ArcEye on topic RTAI_SERIAL
Hi
When you say THE rtai_serial module, are you talking about the one in RTAI?
It is an addon which is not enabled in the normal realtime builds for Linuxcnc
The best way to ensure compatability of symbols, kernel versions, rtai versions etc, would be to build RTAI against the rtai kernel you have installed (3.4.55 ?).
Ensure that serial is enabled in the config (I think it normally builds, but is not installed automatically, you have to manually copy it to /usr/realtime/modules/linuxcnc/ plus the .h file to /usr/realtime/include )
Then hide the existing /usr/realtime folder and run make install to create /usr/realtime and copy over rtai_serial files
Then build Linuxcnc as a RIP install built against this new realtime.
Now you can probably insert it in the same way as the rtai_smi module, so that it is loaded at run time
wiki.linuxcnc.org/cgi-bin/wiki.pl?FixingSMIIssues
This way you will not affect the existing install and have the linuxcnc source code available too
regards
When you say THE rtai_serial module, are you talking about the one in RTAI?
It is an addon which is not enabled in the normal realtime builds for Linuxcnc
The best way to ensure compatability of symbols, kernel versions, rtai versions etc, would be to build RTAI against the rtai kernel you have installed (3.4.55 ?).
Ensure that serial is enabled in the config (I think it normally builds, but is not installed automatically, you have to manually copy it to /usr/realtime/modules/linuxcnc/ plus the .h file to /usr/realtime/include )
Then hide the existing /usr/realtime folder and run make install to create /usr/realtime and copy over rtai_serial files
Then build Linuxcnc as a RIP install built against this new realtime.
Now you can probably insert it in the same way as the rtai_smi module, so that it is loaded at run time
wiki.linuxcnc.org/cgi-bin/wiki.pl?FixingSMIIssues
This way you will not affect the existing install and have the linuxcnc source code available too
regards
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05 Aug 2014 18:59 - 05 Aug 2014 19:37 #49521
by H18
Replied by H18 on topic RTAI_SERIAL
Yes.
I performed the install per
wiki.linuxcnc.org/cgi-bin/wiki.pl?UpdatingTo2.6
Fresh install on Ubuntu 12.04 (Precise)
Section - so that resulted in the use of the kernel and modules defined in this step -> sudo apt-get install linux-image-3.4-9-rtai-686-pae rtai-modules-3.4-9-rtai-686-pae
uname -v yields #1 SMP PREMPT Debain 3.4.55-31linuxcnc
I believe the step above does not install the rtai source (just the headers and modules)...
Is there documentation for getting the rtai source and building rtai against the linuxcnc kernel ?
OK I am looking at the link you provided and I may get what your saying...
How do I know what RTAI version source to use (The one that was used to patch the linux kernel)?
I am guessing the answer might be something like -> apt-get source rtai-3.8.X?
OK I found in the realtime dir -> \realtime-xxx-pae\share\rtai\config-rtai-3.9.1-unofficial
so what does the 'unofficial' mean?
Thanks,
Eric
I performed the install per
wiki.linuxcnc.org/cgi-bin/wiki.pl?UpdatingTo2.6
Fresh install on Ubuntu 12.04 (Precise)
Section - so that resulted in the use of the kernel and modules defined in this step -> sudo apt-get install linux-image-3.4-9-rtai-686-pae rtai-modules-3.4-9-rtai-686-pae
uname -v yields #1 SMP PREMPT Debain 3.4.55-31linuxcnc
I believe the step above does not install the rtai source (just the headers and modules)...
Is there documentation for getting the rtai source and building rtai against the linuxcnc kernel ?
OK I am looking at the link you provided and I may get what your saying...
How do I know what RTAI version source to use (The one that was used to patch the linux kernel)?
I am guessing the answer might be something like -> apt-get source rtai-3.8.X?
OK I found in the realtime dir -> \realtime-xxx-pae\share\rtai\config-rtai-3.9.1-unofficial
so what does the 'unofficial' mean?
Thanks,
Eric
Last edit: 05 Aug 2014 19:37 by H18. Reason: idea
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06 Aug 2014 00:23 #49534
by ArcEye
Replied by ArcEye on topic RTAI_SERIAL
The very reason why I suggested you build RTAI yourself, is because the sources are not available as a package AFAIK
They are an unofficial version from github.com/ShabbyX/RTAI
I don't know if you can download that exact version which was used with 3.4.9 or if the repo has changed since
Source as per above
Most are out of date, this goes through the process, just ignore the specific version numbers
code.google.com/p/neo-technical/wiki/emc2ubuntu
It is just really
autogen.sh
make menu-config
make
but you will need a lot of build tools and libs which are not in the distro
Most are in that link, but a few of those are now out of date also. configure will tell you what is missing.
They are an unofficial version from github.com/ShabbyX/RTAI
I don't know if you can download that exact version which was used with 3.4.9 or if the repo has changed since
Is there documentation for getting the rtai source and building rtai against the linuxcnc kernel ?
Source as per above
Most are out of date, this goes through the process, just ignore the specific version numbers
code.google.com/p/neo-technical/wiki/emc2ubuntu
It is just really
autogen.sh
make menu-config
make
but you will need a lot of build tools and libs which are not in the distro
Most are in that link, but a few of those are now out of date also. configure will tell you what is missing.
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08 Aug 2014 21:35 #49599
by H18
Replied by H18 on topic RTAI_SERIAL
Point of Information the rtai_fifo.ko is also not present.
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08 Aug 2014 23:24 - 08 Aug 2014 23:25 #49606
by ArcEye
Replied by ArcEye on topic RTAI_SERIAL
If you build it yourself it will be.
This a ls of my /usr/realtime dir for a partition with a rtai kernel and realtime built from sources
total 712
-rw-r--r-- 1 root root 11645 Jul 1 17:49 latency_rt.ko
-rw-r--r-- 1 root root 33982 Jul 1 17:49 Module.symvers
-rw-r--r-- 1 root root 6260 Jul 1 17:49 preempt_rt.ko
-rw-r--r-- 1 root root 0 Aug 8 17:21 realtime.txt
-rw-r--r-- 1 root root 19453 Jul 1 17:49 rtai_bits.ko
-rw-r--r-- 1 root root 9273 Jul 1 17:49 rtai_calibrate.ko
-rw-r--r-- 1 root root 58623 Jul 1 17:49 rtai_fifos.ko
-rw-r--r-- 1 root root 43089 Jul 1 17:49 rtai_hal.ko
-rw-r--r-- 1 root root 25972 Jul 1 17:49 rtai_mbx.ko
-rw-r--r-- 1 root root 28525 Jul 1 17:49 rtai_mq.ko
-rw-r--r-- 1 root root 52611 Jul 1 17:49 rtai_msg.ko
-rw-r--r-- 1 root root 44319 Jul 1 17:49 rtai_netrpc.ko
-rw-r--r-- 1 root root 168373 Jul 1 17:49 rtai_sched.ko
-rw-r--r-- 1 root root 56361 Jul 1 17:49 rtai_sem.ko
-rw-r--r-- 1 root root 24015 Jul 1 17:49 rtai_serial.ko
-rw-r--r-- 1 root root 26440 Jul 1 17:49 rtai_shm.ko
-rw-r--r-- 1 root root 5673 Jul 1 17:49 rtai_smi.ko
-rw-r--r-- 1 root root 30329 Jul 1 17:49 rtai_tasklets.ko
-rw-r--r-- 1 root root 16257 Jul 1 17:49 rtai_tbx.ko
-rw-r--r-- 1 root root 24554 Jul 1 17:49 rtai_wd.ko
-rw-r--r-- 1 root root 10173 Jul 1 17:49 switches_rt.ko
You will see it has rtai_serial in it too
regards
This a ls of my /usr/realtime dir for a partition with a rtai kernel and realtime built from sources
total 712
-rw-r--r-- 1 root root 11645 Jul 1 17:49 latency_rt.ko
-rw-r--r-- 1 root root 33982 Jul 1 17:49 Module.symvers
-rw-r--r-- 1 root root 6260 Jul 1 17:49 preempt_rt.ko
-rw-r--r-- 1 root root 0 Aug 8 17:21 realtime.txt
-rw-r--r-- 1 root root 19453 Jul 1 17:49 rtai_bits.ko
-rw-r--r-- 1 root root 9273 Jul 1 17:49 rtai_calibrate.ko
-rw-r--r-- 1 root root 58623 Jul 1 17:49 rtai_fifos.ko
-rw-r--r-- 1 root root 43089 Jul 1 17:49 rtai_hal.ko
-rw-r--r-- 1 root root 25972 Jul 1 17:49 rtai_mbx.ko
-rw-r--r-- 1 root root 28525 Jul 1 17:49 rtai_mq.ko
-rw-r--r-- 1 root root 52611 Jul 1 17:49 rtai_msg.ko
-rw-r--r-- 1 root root 44319 Jul 1 17:49 rtai_netrpc.ko
-rw-r--r-- 1 root root 168373 Jul 1 17:49 rtai_sched.ko
-rw-r--r-- 1 root root 56361 Jul 1 17:49 rtai_sem.ko
-rw-r--r-- 1 root root 24015 Jul 1 17:49 rtai_serial.ko
-rw-r--r-- 1 root root 26440 Jul 1 17:49 rtai_shm.ko
-rw-r--r-- 1 root root 5673 Jul 1 17:49 rtai_smi.ko
-rw-r--r-- 1 root root 30329 Jul 1 17:49 rtai_tasklets.ko
-rw-r--r-- 1 root root 16257 Jul 1 17:49 rtai_tbx.ko
-rw-r--r-- 1 root root 24554 Jul 1 17:49 rtai_wd.ko
-rw-r--r-- 1 root root 10173 Jul 1 17:49 switches_rt.ko
You will see it has rtai_serial in it too
regards
Last edit: 08 Aug 2014 23:25 by ArcEye.
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11 Aug 2014 21:51 - 11 Aug 2014 22:32 #49697
by H18
Replied by H18 on topic RTAI_SERIAL
The repo for rtai can patch 3.4.87 .... not 3.4.55
Do you have the .config file for the Kernel make menuconfig?
also the .config for rtai ?
E
Do you have the .config file for the Kernel make menuconfig?
also the .config for rtai ?
E
Last edit: 11 Aug 2014 22:32 by H18. Reason: more info
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11 Aug 2014 23:40 #49708
by ArcEye
Replied by ArcEye on topic RTAI_SERIAL
Hi
I don't know where Seb keeps the rtai sources
Have a root around highlab.com/~seb/linuxcnc/ and see if you can find them
Or you could always ask him
The kernel config will be what is in /boot/config-3.4.55-rtai-xxxx
There is no config for rtai, you just select C99 and Maths funcs in kernel as per the building link I posted earlier
regards
I don't know where Seb keeps the rtai sources
Have a root around highlab.com/~seb/linuxcnc/ and see if you can find them
Or you could always ask him
The kernel config will be what is in /boot/config-3.4.55-rtai-xxxx
There is no config for rtai, you just select C99 and Maths funcs in kernel as per the building link I posted earlier
regards
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12 Aug 2014 04:25 #49721
by H18
Replied by H18 on topic RTAI_SERIAL
Something is not right, using that config file in the build results in an image that is an order of magnitude bigger than the rtai 3.4.55 pae image.
additionally the update-initramfs step can't find modules.builtin
additionally the update-initramfs step can't find modules.builtin
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12 Aug 2014 13:41 #49738
by ArcEye
Replied by ArcEye on topic RTAI_SERIAL
As I said I have no idea where Seb keeps his configs, or what he did with the sources.
If you are going to build a kernel, just build one there is patch for in RTAI, use the rtai config in the link I posted and make any changes you think you need.
3.8.13 builds fine
If you are going to build a kernel, just build one there is patch for in RTAI, use the rtai config in the link I posted and make any changes you think you need.
3.8.13 builds fine
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