tjcdecoster
commented
4 years ago Follow-up for people with the same issue (not solved):
partial solution
I found a way to access that link. The drivers for PCI-6289 are commented out in the pcimio.c. This has to do with the fact that these drivers were still in development when xenomai 3.0.5 was released. However, they are already programmed partially. So, what can you do about this to circumvent that issue:
install with
./install_rt_kernel.sh
First the necessary files will be downloaded to your desktop. Afterwards, a screen will open with all the options in there. Now open a different terminal and do:
cd /opt/xenomai-3.0.5/kernel/drivers/analogy/national_instruments
emacs pcimio.c
When you open the file, you will see that there are two parts within if-conditions. Those you have to uncomment.
Also, upon checking the specifications for the PCI-6289, I noticed that one line should be changed as well:
ao_speed: 350,
Does this fix the issue with the ¨loading initial ramdisk¨? No, but it is probably a small step on the way to a solution.
If anyone knows what the 63 options are that are commented in the pcimio.c file, please also let me know. I include the comment for reference:
/* These are not all the possible ao ranges for 628x boards.
They can do OFFSET +- REFERENCE where OFFSET can be
0V, 5V, APFI<0,1>, or AO<0...3> and RANGE can
be 10V, 5V, 2V, 1V, APFI<0,1>, AO<0...3>. That's
63 different possibilities. An AO channel
can not act as it's own OFFSET or REFERENCE.
*/
static struct a4l_rngtab rng_ni_M_628x_ao = { 8, {
RANGE(-10, 10),
RANGE(-5, 5),
RANGE(-2, 2),
RANGE(-1, 1),
RANGE(-5, 15),
RANGE(0, 10),
RANGE(3, 7),
RANGE(4, 6),
RANGE_ext(-1, 1)
}};
static struct a4l_rngdesc range_ni_M_628x_ao =
RNG_GLOBAL(rng_ni_M_628x_ao);Remaining problem
I still get the eternal ¨loading initial ramdisk¨ error. However, I think I might have found some posts on the internet that can solve this issue too, although I am not too certain.
Things I tried:
- booting in standard mode: result = ¨loading initial ramdisk¨
- booting in upstart mode: result = ¨loading initial ramdisk¨
- booting in recovery mode: result =
[ 0.058600] x86: Booting SMP configuration: [ 0.058632] .... node #0, CPUs: :1
So, based on that output, I found the following links: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886485 https://xenomai.org/pipermail/xenomai/2017-September/037723.html https://xenomai.org/pipermail/xenomai/2019-March/040462.html
Anybody with any experience in these things?
With kind regards, Tim
fusge
Basic Information:
RTXI Version: 2.2 Installed from Live CD?: No, downloaded with git and compiled from source Ubuntu version: 16.04 LTS
Error Description:
What happened? The realtime kernel was compiled successfully. When booting with the 4.9.24-xenomai-3.0.5 kernel, the boot up hangs up at the loading initial ramdisk step. Booting with the generic Linux kernel works normally.
What steps will trigger the error? Booting the PC with the RT-kernel
Error Message:
More info
We want to use and install a new set-up in our lab. We bought the PCI-6289 as our preferred DAQ-card since it was specified in the supported DAQ-cards. However, now I am stuck at the "loading initial ramdisk" stage. After googling the error and looking through the solved issues, I found this has to do with the DAQ card that is not compatible. However, since it was mentioned that there should be no problem, I dug a little deeper and found the following forum post: https://xenomai.org/pipermail/xenomai/2016-January/035743.html
However, I am not able to get into the link that is mentioned there to look at a possible solution. Could you or anyone else on this forum help me resolve this issue?
I also emailed you the dmesg.out file since you requested it in the other forum post (command was run from the generic Linux version that was installed.)
With kind regards, Tim