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#apertus IRC Channel Logs

2013/09/08

Timezone: UTC


23:00
Bertl
okay, image should be up now
23:00
gcolburn
okay. i'll look for it
23:04
gcolburn
so are you expecting these might enable me to run the custom PL and get to the linux prompt?
23:12
Bertl
yes, I'm pretty sure, but as I said, you might need to adjust the devicetree if you are still using the ramfs
23:13
Bertl
or alternatively, you can put the entire system on the second partition of the sd-card :)
23:19
gcolburn
when you were referring to booting into the flash are you referring to the QSPI flash?
23:19
Bertl
no, the SD card
23:19
gcolburn
oh ok
23:19
gcolburn
that's what confused me
23:20
Bertl
sorry
23:20
gcolburn
by default the SD card has one partition correct?
23:20
Bertl
depends, IIRC, the default already had two partitions
23:20
Bertl
but only one was used
23:21
gcolburn
ok, the second one just wasn't formatted?
23:21
Bertl
yes, something like that, the first partition is used for booting
23:22
gcolburn
ok. yeah because when I pop the SD card in I just see the one partition by default to copy the boot.bin to. I haven't looked at the SD card with a disk utility
23:23
Bertl
yeah, in any case, you can easily adjust it even without taking it out of the zedboard
23:23
Bertl
i.e. boot into linux, add/adjust/format the partition and copy everything from the rootfs (ram) to the second partition
23:24
Bertl
requires a reboot after adding the partition to the layout (if necessary) but no reboot required after formatting
23:29
gcolburn
so what is the main reason you're using the second partition on the SD card?
23:29
gcolburn
has opposed to loading everything over TFPT?
23:29
Bertl
because I added a bunch of binaries and scripts there for testing
23:30
Bertl
and I don't want to rebuild the ramdisk every time I change a line
23:37
gcolburn
so you still use TFTP to load the main ramdisk but just have your other testing files on the second partition of the SD card?
23:39
Bertl
well, I'm not loading the ramdisk when I use the second partition (i.e. different .scr) but it wouldn't hurt
23:41
Bertl
http://vserver.13thfloor.at/Stuff/AXIOM/TFTP/ZED/BERTL.digilent/
23:41
Bertl
u-boot.scr -> BERTL.digilent/u-boot-noramdisk.scr
23:54
gcolburn
thanks. I'll have to play with that sometime soon
23:59
Bertl
you're welcome!
00:13
gcolburn
so out of curiosity, is this the type of work you do for a living? (fpgas/embedded linux)
00:17
Bertl
well, yes and no, the electronic part is more a hobby
00:17
Bertl
I'm doing IT consulting with emphasis on virtualization and embedded systems
00:18
Bertl
and yes, I don't do windows :)
00:20
gcolburn
cool
00:21
gcolburn
yeah about 10 years ago I used to do .NET development, but since then its mainly been java/Eclipse RCP to support my work
00:25
gcolburn
my main job now is as a physicist in a hospital (treating cancer patients), so I don't do quite as much software development as my last job let me do (which was about 1/2 time) for data analysis of monte carlo simulations
00:29
Bertl
a good friend of mine is working as physicist in a large hostpital here in austria, mainly for PET
00:31
Bertl
(positron emission tomography)
00:32
gcolburn
we fuse PET/CT's to the CT we use for treatment planning so we can contour in the tumor and design the radiation treatment plans
00:33
gcolburn
we're using a system you'd probably find pretty interesting from a hardware/software point of view
00:33
gcolburn
its called Vision RT
00:33
gcolburn
it uses a series of stereoscopic cameras and FPGAs to produce a real-time 3d surface of the patient to monitor their positioning for treatment
00:34
gcolburn
it uses a projector as well
00:34
gcolburn
http://www.visionrt.com/
00:35
gcolburn
when the engineer's from the company are out I try and get more details on their image processing on the FPGA (more than the literature gives)
00:36
Bertl
yep, sounds interesting ... and LOL @ FPGA :)
00:37
Bertl
it's a shame that most companies keep those technologies a secret and/or mystify it so much
00:37
Bertl
a few centuries ago, you couldn't even sell hardware without proper documentation and schematics, etc.
00:39
gcolburn
yeah
00:42
gcolburn
as the physicist our responsibilities are quality assurance of the linear accelerators (that deliver the radiation) and all other equipment involved such as vision RT. but they won't always give you the information you request because its proprietary. its even more complicated when we have systems integrated from competing companies, because neither one wants to take responsibility when there is a problem
00:42
gcolburn
and there's nothing we can do about i :)
00:42
gcolburn
it
00:42
Bertl
yeah, I know, same here (in Austria)
00:43
Bertl
and it is crazy what those companies charge for a repair
00:44
gcolburn
yeah. most hospitals buy year long maintenance contracts (hundreds of thousands of dollars per year)
00:44
Bertl
and even if you know, you can fix the damn thing for a few bucks in half an hour, everything has to wait for the engineer, which will sometimes take days to do a simple replacement
00:44
gcolburn
we thought it would be cool to start our own physics group eventually and hire a service engineer to work for us so we could save the hospital money
00:45
gcolburn
yeah, our we have more problems with our IT department. I've never seen one so bad, its ridiculous
00:46
Bertl
hehe, and that's from a phycisist :)
00:46
Bertl
but yeah, the IT departments in our hospitals are really bad as well
00:47
Bertl
I still can't believe that they suggested to put all the patient's data (including all scans) on a credit card sized chipcard
00:48
gcolburn
we're trying to get a new accelerator online and IT wouldn't let the installer have access to the network (kind of required for a computer to talk to the accelerator right?). so one of our physicists spent an hour and drove over, opened the IT closet and just put in a few patch cables (with the installer and IT present). the IT guy said you can't do that. so the physicists told him that if IT wants to remove it he's more than welcom
00:48
gcolburn
tell the chief financial officer why our install is behind schedule LOL
00:48
Bertl
and they are actually sending patient data unencrypted via email :)
00:48
gcolburn
was that in some news article or something?
00:49
gcolburn
since I got into the health care field I have been surprised at the lack of security
00:49
Bertl
I'm pretty sure it is somewhere
00:50
gcolburn
well I've got to get going unfortunately
00:50
gcolburn
good chatting and thanks for the help
00:51
Bertl
again, you're welcome! have a good one!
00:51
gcolburn
you too!
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gcolburn
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14:37
Bertl
morning everyone!
21:45
gcolburn
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