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[01:37:30] <cradek> :-(
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[02:54:52] <skunkworks_> cradek: why the sad face?
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[13:52:59] <cradek> skunkworks: because of robert302's being sad that he wrote something we already had
[13:53:26] <cradek> I hope he's not frustrated - continuing on the comedi part would be great
[13:53:48] <cradek> oh he's back!
[13:54:00] <cradek> Robert302: sorry to talk about you like you weren't here
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[13:54:58] <archivist> someone else used comedi and linuxcnc a year or two back
[13:55:03] <seb_kuzminsky> i've often thought it'd be cool if we could use all the comedi drivers
[13:55:24] <cradek> absolutely
[13:55:34] <seb_kuzminsky> i didn't know comedi already used rtai, that's great news
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[13:56:42] <CaptHindsight> no cncfest this year?
[13:59:37] <cradek> I don't know of anything
[14:01:28] <CaptHindsight> cradek: the camview and camunits just need the extra plugins packaged for 12.04, everything works for 10.04
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[14:02:18] <CaptHindsight> the howto just needs to be cleared up
[14:02:41] <cradek> that sounds like good news
[14:03:14] <CaptHindsight> you just add the repos, install the packages and modify 2 lines in the .ini for Axis in 12.04
[14:04:29] <cradek> so only updated docs are needed? or is everything fine?
[14:05:11] <CaptHindsight> I still have to test 10.04, but it works fine on 12.04
[14:06:37] <CaptHindsight> but the howto needs some clearing up since it skips steps for the non Linux savvy
[14:07:01] <CaptHindsight> and the info is a bit scattered vs step by step on one page
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[14:07:42] <cradek> terrific
[14:07:48] <cradek> thanks for looking into it
[14:08:10] <CaptHindsight> I'll check on 10.04
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[14:10:09] <CaptHindsight> camunits has a few plugins now for cross hair and circles, the next step will be to have an easy method for users to add additional plugins for image processing
[14:11:15] <CaptHindsight> edge detection, contrast enhancement, thresholding etc
[14:12:07] <CaptHindsight> i have to work on this anyway so I'll see about what I can put together
[14:12:32] <CaptHindsight> maybe another repo just for plugins and extra features
[14:13:07] <cradek> I'm not good at writing docs, but I do know some things about packaging. yell if you need help.
[14:23:18] <Robert302> hello, no i'm not frustrated ;-P. I only wan't to change my data logger to the already existing real time part of the halsampler because i think it's great to use existing parts. But the userspace part does not exist until now because i send the data from the "halsampler" via tcp to a matlab project.
[14:24:28] <cradek> great, I agree with your judgment and plan
[14:24:56] <Robert302> Today i started working with an comedi driver which should work for every kind of card so i allocate memory depending on the type of card.
[14:25:07] <cradek> awesome
[14:26:38] <Robert302> but it will take some time to create and test it because I'm a little bit busy now because i have to write a documentation about my measurements. I think i will have a tested version in 3 weeks around
[14:27:30] <cradek> we will be here!
[14:27:37] <Robert302> all right 09
[14:27:39] <Robert302> =)
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[15:33:10] <seb_kuzminsky> Robert302: i like the idea of reusing existing stuff instead of rewriting it
[15:34:44] <seb_kuzminsky> to that end, did you see that the existing halsampler userspace program writes the data it gets to its stdout by default?
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[15:35:40] <seb_kuzminsky> so you could do something like "halsampler | nc matlab.example.com 1234"
[15:36:34] <seb_kuzminsky> or if you need to transmogrify the data format, a thin shim that works on stdio: "halsampler | transform-data | nc matlab"
[15:36:38] <seb_kuzminsky> just a thought
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[16:36:06] <KGB-linuxcnc> 03Sebastian Kuzminsky 052.6 fe00c88 06linuxcnc 10docs/man/man9/hostmot2.9 docs: fix a formatting error in hostmot2 manpage * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=fe00c88
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[21:21:36] <cradek> memleak: do you know of any trouble with rtai + pae nowadays? we had to avoid pae years ago.
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[22:06:24] <mozmck> heh, at 17:50, this die-hard C guy explains why C++ can be so nice.
http://www.youtube.com/watch?v=ON0A1dsQOV0 (He's talking about switching Subsurface from GTK to QT)
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[22:24:44] <andypugh> There is a report on the forum that “biquad” segfaults.
[22:25:22] <andypugh> I have tried it once in halcmd / ssh and it did indeed crash. I am repeating the experiment
[22:29:11] <seb_kuzminsky> if the user sets Q to 0, you get a divide-by-zero
[22:29:18] <seb_kuzminsky> same if a0 becomes 0
[22:31:05] <andypugh> Does Q default to 0?
[22:33:47] <andypugh> It seems to use typedefs for no readily apparent reason.
[22:37:52] <andypugh> It is crashing for me with the default values. (ie, Q = 0.7071)
[22:39:12] <andypugh> The option data option seems to be deprecated now. I wonder if it would be more reliable using “variable”
[22:44:48] <andypugh> It checks for Q < 0.5, which includes 0
[22:45:47] <andypugh> It is more difficult to see if a0 can ever be zero. It needs a careful choice of Q, f and sample frequency to achieve that.
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[22:52:41] <seb_kuzminsky> since you said 'segfaults', i assume you're running either sim or one of the ubc userspace thread models?
[22:53:04] <andypugh> Sorry, I was perhaps a bit imprecise.
[22:53:39] <andypugh> I have no idea how my setup crashes. The headless PC stops talking on ssh and I have to walk across the room to restart it.
[22:54:02] <seb_kuzminsky> that sounds fun
[22:54:31] <andypugh> The forum roprt shows Axis reporting “fault with vec-14, This fault may not be recoverable without rebooting”
[22:55:10] <andypugh> http://www.linuxcnc.org/index.php/english/forum/24-hal-components/27804-rt-component-biquad-bug#46733
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[23:00:26] <seb_kuzminsky> it runs fine for me in sim (at least i haven't been able to get it to crash yet)
[23:00:58] <andypugh> interesting
[23:01:10] <seb_kuzminsky> except i can't get .valid to go True
[23:01:11] <seb_kuzminsky> hm
[23:01:11] <andypugh> I have no idea what branch I am on
[23:02:02] <seb_kuzminsky> haha
[23:02:55] <andypugh> halrun / loadrt threads / loadrt biquad / addf biquad… thread1 / setp biquad.0.enable 1 is a crash every time.
[23:03:28] <andypugh> I have tried recompiling without the data struct (variable int lastEnable instead) and that didn’t help
[23:03:48] <seb_kuzminsky> oh wait, here too, i just didn't notice
[23:03:53] <andypugh> The enum looks a bit strange.
[23:03:58] <seb_kuzminsky> May 8 16:57:24 steel kernel: [575239.353976] rtapi_app[14137]: segfault at 28 ip 00007f23418900b9 sp 0000000000e49ca0 error 4 in biquad.so[7f234188f000+2000]
[23:04:42] <andypugh> does addr2line work in comps?
[23:04:53] <seb_kuzminsky> it should
[23:05:04] <andypugh> (you might need to find a way to keep the intermediate c file)
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[23:05:37] <andypugh> I say “you” because it’s past midnight here and I can’t be bothered to reboot that machine again.
[23:05:47] <seb_kuzminsky> np
[23:05:57] <seb_kuzminsky> thanks for pointing out the non-email bug report
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[23:25:03] <cradek> seb_kuzminsky: you can turn on SIGFPE and run sim: git grep niftily
[23:41:26] <seb_kuzminsky> hm? that statement was too compact for my dazed post-work brain
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[23:41:50] * seb_kuzminsky squints suspiciously at biquad's 'option data Internal'
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