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[00:11:54] <skunkworks> micges: really looking good so far
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[00:33:03] <micges> skunkworks: that's great
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[00:41:30] <skunkworks> high jerk numbers still cause overages..
[00:41:57] <skunkworks> not as bad though.. 470 when set to 400in/sec^2
[00:45:42] <pcw_home> really high jerk numbers might get to full accel in less than a thread period so need to be bounded (or warned against)
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[00:49:45] <Tom_itx> is the J1900 better than the J1800? i notice the J1900 board runs at 2Ghz but the J1800 runs at 2.41Ghz
[00:51:57] <skunkworks> 1800 iirc is 2 core - 1900 4 core
[00:52:29] <Tom_itx> do you have a favorite brand of ram?
[00:52:52] <Tom_itx> i generally get kingston but newegg has alot of gskill advertised
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[00:53:29] <skunkworks> I buy whatever is on sale at newegg
[00:53:34] <skunkworks> :)\
[00:54:23] <skunkworks> micges: so the original jerk implimentation wasn't quite there yet?
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[00:55:57] <skunkworks> pcw_home: in my simple mind - that should all be figured out...
[00:56:20] <micges> skunkworks: never doesn't full works for me
[00:56:57] <micges> didn't*
[00:58:53] <skunkworks> micges: well yours is working much better
[00:59:25] <micges> skunkworks: yeah I've got simmilar overages
[00:59:38] <skunkworks> 50in/s^ ,10in/s ,jerk 1000 I get a slight overage of 50.6
[01:00:10] <micges> on arais I've got vel/acc correct even better than in mine, but got always position errors
[01:00:56] <micges> but last fixes makes req vel and real vel very close
[01:02:11] <micges> skunkworks: I think we've got overages becouse of arcs, jerk must be calcuated for them
[01:03:56] <skunkworks> micges: I ge similar overages in 3d_chips.. (made of short line segments..)
[01:04:33] <micges> ah so something more
[01:05:39] <micges> I see it
[01:05:40] <micges> ID 7 | END | TARGET 3.000000000000 | PROGRESS 3.069398545935 | OVERSHOOT -0.069398545935
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[01:44:49] <skunkworks> So - how does this follow actual path?
[01:46:08] <micges> it jumps after end of segment to reqested positon
[01:46:35] <micges> then you've got vel/acc overages
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[01:51:21] <skunkworks> I meant - is it following the same path as the non-jerk planner?
[01:52:01] <skunkworks> or does jerk add more deviation from path?
[01:52:18] <micges> ah
[01:52:55] <micges> jerk mdifications touches only acc/vel part of planner, path generating is the same as old non jerk one
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[02:07:06] <skunkworks> micges: there doesn't seem to be any sort of blend between segments. is that right?
[02:07:55] <micges> not yet
[02:08:00] <skunkworks> ah - ok
[02:08:27] <skunkworks> thought maybe I just didn't understand it ;)
[02:08:28] <micges> TODO: blending, pausing, aborting, feedoverride
[02:08:54] <skunkworks> heh - short list.. - then Add into circular arc blending?
[02:08:58] <skunkworks> :)
[02:09:37] <micges> rather no...
[02:10:23] <skunkworks> a bit much?
[02:10:31] <micges> I mean I see it will be difficult
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[04:33:19] <KGB-linuxcnc> 03Dewey Garrett 052.7 9e5a425 06linuxcnc 10configs/sim/axis/moveoff/moveoff_display_7.xml 10src/hal/components/moveoff.comp moveoff.comp: allow_backtracking_enable_change * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=9e5a425
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[05:04:27] <steve_stallings> --skunkworks asked--
http://www.pmdx.com/PMDX-411 -- steves_logging: will this work with linuxcnc? ;) cool product.
[05:04:43] <steve_stallings> The PMDX-411 is a buffered intelligent device that communicates over USB. As such it requires motion data more than 1 servo cycle in advance of the actual motion in order to not run out of data.
[05:04:51] <steve_stallings> Typically we run 100 mS to 25 mS of buffer. The current architecture of LinuxCNC does not have a way feed a motion device data more than one servo cycle at a time.
[05:05:00] <steve_stallings> It has been done by one company making plasma cutters, but it was a custom modification of LinuxCNC. One of the goals in MachineKit was to make this type of operation possible, but I don't think it has been done yet.
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[06:24:50] <seb_kuzminsky> http://brlcad.org/wiki/Google_Summer_of_Code/Project_Ideas
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[06:44:17] <archivist> heh /me lurks in #brlcad
[06:44:36] <archivist> and I did not know or spot that
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[17:11:35] <skunkworks> zlog
[17:11:36] <zlog> skunkworks: Log stored at
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2015-03-02.html
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[18:06:33] <KGB-linuxcnc> 03Francis Tisserant 05seb/master/po4a ac65775 06linuxcnc 03docs/src/gcode/o-code.fr.po 10docs/src/gcode/o-code.txt 10docs/src/gcode/o-code_fr.txt French doc adaptation to po4a * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=ac65775
[18:06:33] <KGB-linuxcnc> 03Francis Tisserant 05seb/master/po4a 4f4885c 06linuxcnc 03docs/src/gcode/other-code.fr.po 10docs/src/gcode/other-code.txt 10docs/src/gcode/other-code_fr.txt French doc adaptation to po4a * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=4f4885c
[18:06:33] <KGB-linuxcnc> 03Francis Tisserant 05seb/master/po4a b493f8a 06linuxcnc 10docs/src/examples/gcode.txt 10docs/src/examples/gcode_fr.txt French doc adaptation to po4a * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=b493f8a
[18:06:37] <KGB-linuxcnc> 03Francis Tisserant 05seb/master/po4a 0f79d7d 06linuxcnc 03docs/src/examples/gcode.fr.po French doc adaptation to po4a * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=0f79d7d
[18:06:40] <KGB-linuxcnc> 03Francis Tisserant 05seb/master/po4a 39fc63e 06linuxcnc 10(6 files in 2 dirs) French doc adaptation to po4a * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=39fc63e
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[20:25:28] <seb_kuzminsky> aww yeah! we got accepted into GSoC 2015!
http://www.google-melange.com/gsoc/org/list/public/google/gsoc2015
[20:25:46] <seb_kuzminsky> this means (i think) we'll get a student to work on a linuxcnc project this summer
[20:26:03] <Tom_itx> is that good?
[20:26:10] <seb_kuzminsky> mmmmaybe
[20:26:13] <seb_kuzminsky> i think so
[20:26:25] <Tom_itx> hope you get a smart one
[20:26:37] <seb_kuzminsky> heh yeah
[20:27:20] <Tom_itx> no selfies or cell phones allowed!
[20:30:22] <Tom_itx> i don't see linuxcnc in the list..
[20:31:41] <CaptHindsight> \0/
[20:31:59] <CaptHindsight> last year lots of projects got turned down
[20:33:23] <CaptHindsight> Tom_itx:
http://www.google-melange.com/gsoc/org2/google/gsoc2015/brlcad
[20:33:34] <CaptHindsight> under their umbrella
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[21:13:18] <skunkworks> Great work seb_kuzminsky
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[21:38:21] <seb_kuzminsky> it's a big experiment, i've never participated in gsoc before
[21:38:52] <seb_kuzminsky> i'm friends in the real world with a guy who works with the brl-cad folks, he connected us
[21:38:55] <seb_kuzminsky> we'll see how it goes
[21:40:39] <cradek> > has the world's oldest source code repository.
[21:40:44] <cradek> o rly?
[21:40:54] <cradek> that's really cool if so
[21:41:22] <seb_kuzminsky> and i thought *our* code was crufty
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[21:53:11] <wortley> Hi.
[21:55:22] <cradek> the oldest source repositories I have at my fingertips are from 83 and 86
[21:55:40] <cradek> I kind of doubt 79 is the oldest one in the world...
[21:55:53] <cradek> depends on what you call a repository, I'm sure
[21:57:00] <CaptHindsight> I know several that have participated in GSOC
[21:57:18] <CaptHindsight> writing the proposals is the most work for the mentors
[21:57:43] <CaptHindsight> and some students just need some nudging or redirection at times
[21:57:53] <seb_kuzminsky> i mostly relied on our not-terrible feature-request tracker on sourceforge
[21:58:32] <seb_kuzminsky> plus that kernel deb building project that i've been trying to offload since before i started it ;-)
[22:02:05] <seb_kuzminsky> i used to work at the university, putting students back on track is nothing new
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[22:20:58] <wortley> seb_kuzminsky: If you want to see that crazy pointer thing it is at
http://linuxcnc.org/index.php/english/forum/24-hal-components/28851-spi-bus-generic-driver-and-st-l6480#56416
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[22:29:19] <wortley> ANYONE: Could I theoretically call write_port from the hal_parport module within a driver to force it go faster?
[22:30:59] <wortley> I know that it would kinda be messing up the scheduler, but perhaps it wouldn't be disastrous.
[22:32:52] <seb_kuzminsky> wortley: i'm pretty sure it's not safe to call that function on the same port from multiple threads
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[22:33:49] <seb_kuzminsky> is the crazy pointer thing a way to get data from one comp to another? You want to get a bunch of bytes from a spi-client comp into a spi-driver comp?
[22:33:55] <wortley> If I were to attept it, I would be calling it from within base-thread, which would be the same thread. Do you think that COULD be okay?
[22:34:17] <wortley> yes, that's it.
[22:34:18] <seb_kuzminsky> uh maybe
[22:34:22] <seb_kuzminsky> it still sounds crazy
[22:34:47] <seb_kuzminsky> i thought the point of this was to divorce the spi driver from the parport? and do it over hal nets instead?
[22:34:49] <wortley> the pointer thing, or the parallel port write thing?
[22:35:26] <seb_kuzminsky> the whole spidriver-doesnt-have-a-parport-inside-it thing
[22:35:27] <wortley> You are write -- and I plan to keep it that way. I am not desparate yet. And i haven't tuned my box to see how fast I can set the base-thread.
[22:35:57] <wortley> so the parport thing is just curiousity at this point while I am learning about kernel modules.
[22:36:08] <wortley> I plan to keep it abstraced like it is today.
[22:36:09] <seb_kuzminsky> pcw and i suggested that you write a spi-parport driver, which would have exclusive access to the parport, so it would be allowed to do whatever it wants with the parport without confusion and craziness
[22:37:17] <seb_kuzminsky> i think your goal is to have one comp that gets bytes "somehow", and runs the spi wire-protocol on hal pins (which you'd typically net to parport pins)
[22:37:24] <wortley> Ok -- What about the interface to the clients that I have implement by passing pointers on pins.
[22:37:38] <seb_kuzminsky> and you'd have another comp that knows about a particular spi device, and feeds the spi driver (somehow) with the bytes it wants to clock out to that spi device
[22:37:42] <wortley> Yes - you are clear on my goal.
[22:37:53] <seb_kuzminsky> bbl
[22:38:11] <mozmck> why not pass the data on the pins instead of a pointer?
[22:38:32] <wortley> too many pins. 32 in, 32 out, pointers, flags...
[22:38:43] <wortley> That's if 32 byte buffers are enough.
[22:39:27] <wortley> I know, I'm trading a lot of pins for doing something crazy with pointers, which doesn't seem rational.
[22:39:50] <wortley> but really all of this is just baby steps to the right, non-crazy solution.
[22:41:21] <wortley> Also, the pointers give me data structure direct access, which cleaned up the code a lot.
[22:42:37] <wortley> I coud envision a new kind of hal pin struct that is a pointer with perhaps a linked list of children that need to exit before it can be freed or something.
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[22:44:09] <wortley> I'm exploring how to talk to kenel functions and read parameters and such, but I am still learning.
[22:44:50] <mozmck> A hal pin is just a pointer to shared memory anyhow, so I would think you could make a buffer in shared memory and use that
[22:45:45] <mozmck> I've done things similar to your pointer passing before. In that case there really was no other good option.
[22:46:12] <wortley> Hence my passing of pointers like I did -- I let the component generator hal_malloc it for me -- Cast the pointers to unsigned ints, passed them via nets, put them back into pointer. Fun!
[22:46:29] <mozmck> yep!
[22:46:43] <wortley> What I did is asking for trouble. It gives people a pin they can tie to something and panic their kernel.
[22:47:18] <wortley> If they haven't wired up their servos properly it tears their head off.
[22:49:02] <wortley> Of course, it will probably happen before even a single base-thread completes, so they will just be wondering what happened and probably be fine.
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[22:54:00] <seb_kuzminsky> i can think of two non-crazy options
[22:54:17] <seb_kuzminsky> 1. invent a new kind of hal object called a fifo, that does what you want
[22:54:31] <seb_kuzminsky> 2. use an in-kernel api between your two components to pass the data
[22:54:38] <KGB-linuxcnc> 03Michael Geszkiewicz 05micges/master/limited_jerk 2930f9b 06linuxcnc 10src/emc/jerk_tp/jerk_tc.h 10src/emc/jerk_tp/jerk_tp.c 10src/libnml/posemath/_posemath.c 10src/libnml/posemath/posemath.h jerk_tp: add seamless blending to planner, based on code from yishinli * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=2930f9b
[22:54:52] <seb_kuzminsky> the hostmot2 system has an in-kernel api to register fpga boards with the higher-level driver and it works fine
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[23:08:29] <micges> skunkworks: ^^
[23:10:42] <skunkworks> ooh..
[23:12:30] <wortley> seb_kuzminsky: I will try out the in-kernel API think -- Anyone looked into implementing the machinekit ring buffers?
[23:14:22] <wortley> seb_kuzminsky: I have looked at the ring.h and hal_ring.h stuff from machinekit, and I even got it to include, but I am still slowly wrapping my head around it.
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[23:18:48] <PCW> Parallel port works as expected on Gigabyte J1800D2H with wheezy/ linuxcnc 2.6.7
[23:19:30] <micges> PCW: thanks
[23:24:03] <PCW> Also ASRock Q1900-ITX works as expected with 2.6.4 (usb boot from wheezy iso image)
[23:28:22] <skunkworks> micges: back to pretty huge violations
[23:29:09] <micges> I know, looking for it, but seems that basic blending works
[23:30:38] <skunkworks> neat
[23:31:11] <micges> after whole day battle with blending I very would like to port jerk code to CAB
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[23:31:31] <micges> Rob's planner is just so fast ;)
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[23:32:37] <micges> I mean it hold current vel on very high level
[23:34:35] <adam3999> Hey pcw thanks for looking at those systems
[23:34:55] <adam3999> I'm still having an issue with my Q1900M with 2.4.6 and .7 on wheezy
[23:35:06] <PCW> NP thats all the JXXXX mbs i have
[23:35:15] <PCW> weird
[23:35:42] <adam3999> I'll be back in the shop in a few hours if there is any troubleshooting info I can send your way
[23:36:11] <adam3999> I mentioned to micges last night that I was able to see inputs from my mx3660 with a separate parallel port testing app
[23:36:32] <adam3999> So I think it's related to Hal or something else in the software stack
[23:36:59] <skunkworks> micges: yes - it is pretty impressive.. :)
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[23:42:48] <KGB-linuxcnc> 03Michael Geszkiewicz 05micges/master/limited_jerk 299f559 06linuxcnc 10src/emc/jerk_tp/jerk_tp.c jerk_tp: remove vel/acc glitches between segments while blending is enabled * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=299f559
[23:43:03] <micges> yay!
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[23:47:01] <PCW> The combination of CAB and limited jerk should really fly on profiling /fast cutting type apps
[23:48:07] <micges> 3d printing
[23:49:11] <PCW> robotics also (and yes wobbly 3D printers)
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[23:50:38] <PCW> almost always a win to not excite vibrations in you machine
[23:51:31] <micges> yeah
[23:52:35] <micges> my test programs runs 25% longer but with 1/3 max acc comparing to CAB tests
[23:52:47] <micges> so surely less stress
[23:56:21] <PCW> Yeah, Ive also seen that the following error spikes due to stepped acceleration mean that people dont tune for the full machine performance
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[23:59:13] <skunkworks> micges: Is there some way to activate blending? I don't see any
[23:59:23] <micges> g64 P0.1
[23:59:36] <PCW> Certainly gentler (you would not have happy passengers if you drove with unlimited jerk)
[23:59:39] <micges> witohut Q