Jon,
Am 07.12.2012 um 04:37 schrieb Jon Elson:
Michael Haberler wrote:
sorry for what maybe sounds like a dumb question, but having read the
Proctor/Shackleford paper on the influence of jitter on steppers which
basically say: all it causes is a loss of torque on the order of 10%
(given
Am 07.12.2012 um 04:40 schrieb Jon Elson:
Michael Haberler wrote:
and not so bad:
$ /usr/xenomai/bin/latency
RTT| 00:02:28 (periodic user-mode task, 1000 us period, priority 99)
RTH|lat min|lat avg|lat max|-overrun|---msw|---lat best|--lat
worst
RTD| 4.249|
Am 07.12.2012 um 04:45 schrieb Jon Elson:
Charles Steinkuehler wrote:
Yes, I'm old enough that compiling an
FPGA used to take a couple of days.
For the relatively modest FPGAs I've been doing for the univeral stepper
and PWM controllers,
for instance, synthesis, placeroute, bitfile
I guess no one wrote man pages for them, they did write docs for them.
All of those are written in C so a man page would have to be written by
hand. Only components written using Comp get auto generated man pages.
In any case I doubt a newbee can find a man page with both hands... much
less
the man page io.1 is a redirect to iocontrol.1 for some unknown reason.
You would have to ask Alex why he created the page on Wed, 17 Oct 2007.
I see no reason to keep it myself unless someone chimes in...
John
On 12/6/2012 1:38 PM, Anders Wallin wrote:
Looking at:
Is the patch for 2.5 or master?
The html man pages are generated by magic somehow... might be in the
submakefile I'm not sure.
John
On 12/6/2012 1:22 PM, Anders Wallin wrote:
I was browsing this:
http://www.linuxcnc.org/docs/2.5/html/hal/components.html
and thought that listing all of the
On Fri, Dec 7, 2012 at 1:58 PM, John Thornton bjt...@gmail.com wrote:
Is the patch for 2.5 or master?
my patch is for v2.5_branch.
I also noticed the list of ca 110 components isn't complete. Would you want
further patches for v2.5_branch or for master?
The html man pages are generated by
If it applies to 2.5 then make the patches for 2.5 and they will get
pushed uphill. I just pushed the patch. If you don't mind can you can
send the patches to jthornton at gnipsel dot com that is my documents
computer and sometimes I might miss it here.
Thanks
John
On 12/7/2012 6:31 AM,
normally a top poster here, but will try to insert
my comments in a rational place below.
-Original Message-
From: Michael Haberler [mailto:mai...@mah.priv.at]
Sent: Friday, December 07, 2012 3:22 AM
To: EMC developers
Subject: Re: [Emc-developers] latency histogram comp
On Fri, 2012-12-07 at 10:35 -0500, Kent A. Reed wrote:
On 12/7/2012 9:36 AM, Steve Stallings wrote:
The paper being referenced can be found here:
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824455
In the data cited in this paper the motor speed was 15 revolutions
per
On 12/7/2012 6:49 AM, John Thornton wrote:
In any case I doubt a newbee can find a man page with both hands... much
less know to look for a man page.
Now THAT'S dismissive :-)
Seriously, though, I have cognitive issues with our man page system.
Even seasoned users might miss that
man abs -
On 12/7/12 09:00 , Kent A. Reed wrote:
Seriously, though, I have cognitive issues with our man page system.
Even seasoned users might miss that
man abs - returns a description of the family of Linux functions which
compute the absolute value of an integer
man 9 abs - returns a description of
On 12/7/2012 11:08 AM, Sebastian Kuzminsky wrote:
I've lived with man pages for decades, and our man pages seem well
organized to me.
I think that's my point, actually. It's commonly accepted among the
folks who study such things that it takes roughly 6 to 10 years to
become truly expert in
On Friday 07 December 2012 11:04:27 Steve Stallings did opine:
normally a top poster here, but will try to insert
my comments in a rational place below.
-Original Message-
From: Michael Haberler [mailto:mai...@mah.priv.at]
Sent: Friday, December 07, 2012 3:22 AM
To:
On Dec 7 2012 9:35 AM, Gene Heskett wrote:
On Friday 07 December 2012 11:04:27 Steve Stallings did opine:
normally a top poster here, but will try to insert
my comments in a rational place below.
-Original Message-
From: Michael Haberler [mailto:mai...@mah.priv.at]
Michael Haberler wrote:
it's the latency test which comes with the xenomai userland support; note
this is for idle CPU
running a compile over NFS this creeps up to 30ish max/55worse while still
being around 12 average
Well, average is not very meaningful for our purposes. 55 worst case
Michael Haberler wrote:
Actually I think there's a huge market for $5 CPU's being able to drive
precise motion without much further ado, but it might not be the
retrofitting/classic CNC control market
Yes, I had a need at work for a box to control a stepper motor to run a
set of samples
John Thornton wrote:
I guess no one wrote man pages for them, they did write docs for them.
OH! MAN pages!
All of those are written in C so a man page would have to be written by
hand. Only components written using Comp get auto generated man pages.
In any case I doubt a newbee can
Gene Heskett wrote:
This is quite informative Steve, thanks. It also sends a rather powerful
message that we really ought to consider that step generation is a hardware
job.
Well, I've always thought so, and I hope that isn't just me as a
manufacturer talking.
(For the future, the PRU on
I seriously doubt a new user would know what man is much less search for
something in the man pages using a terminal. Only seasoned linux users
know about man pages.
John
On 12/7/2012 11:23 AM, Anders Wallin wrote:
On Fri, Dec 7, 2012 at 6:00 PM, Kent A. Reed kentallanr...@gmail.comwrote:
On 7 December 2012 17:23, Anders Wallin anders.e.e.wal...@gmail.com wrote:
To make the documentation task manageable I think the HTML/PDF docs must be
autogenerated from comments in the source - just like man-pages for
components written with comp are now.
I generally write a man-page
On Fri, Dec 7, 2012 at 8:23 PM, andy pugh bodge...@gmail.com wrote:
On 7 December 2012 17:23, Anders Wallin anders.e.e.wal...@gmail.com
wrote:
To make the documentation task manageable I think the HTML/PDF docs must
be
autogenerated from comments in the source - just like man-pages for
On Friday 07 December 2012 14:05:13 Jon Elson did opine:
Michael Haberler wrote:
it's the latency test which comes with the xenomai userland support;
note this is for idle CPU
running a compile over NFS this creeps up to 30ish max/55worse while
still being around 12 average
Well,
On Friday 07 December 2012 14:42:34 Jon Elson did opine:
Gene Heskett wrote:
This is quite informative Steve, thanks. It also sends a rather
powerful message that we really ought to consider that step
generation is a hardware job.
Well, I've always thought so, and I hope that isn't
On 7 December 2012 19:48, Gene Heskett ghesk...@wdtv.com wrote:
Mesa I just looked at, also PMDX, but didn't find anything like that unless
its a hidden feature of the FPGA programming.
What feature do you think might be hidden?
I would say that a 7i43 might be a relatively inexpensive
On Friday 07 December 2012 15:44:25 Steve Stallings did opine:
The propeller works well for generating the steps.
It works less well at communicating with a host if
all comms would be consolidated in a single core
for communication with the host. There are no hardware
On 7 December 2012 20:55, Gene Heskett ghesk...@wdtv.com wrote:
That, at that price, seems a bit more appetizing. I assume it can daisy
chain to my existing C1G, hooked up downstream?
Not really, it has a completely different pinout (and 48 pins, not 17).
You could make up a cable to convert
A script to plot latency histograms (1,2,5 bins):
http://www.panix.com/~dgarrett/stuff/lhisto.tcl
It uses the aforementioned lhisto.comp:
http://www.panix.com/~dgarrett/stuff/lhisto.comp
To use it:
$ comp --install lhisto.comp
$ chmod 755 lhisto.tcl
$ ./lhisto.tcl ;# to use with
Gene Heskett wrote:
Those too are valid questions, with very iffy answers for the hobbiest like
me. The improvement probably would be appreciated, but in nearly 10 years
of having the basic machinery, I have only re-couped maybe 10% of their
original cost. And those jobs were so simple I
On Fri, 2012-12-07 at 21:18 -0600, Jon Elson wrote:
Gene Heskett wrote:
Those too are valid questions, with very iffy answers for the hobbiest like
me. The improvement probably would be appreciated, but in nearly 10 years
of having the basic machinery, I have only re-couped maybe 10% of
On Friday 07 December 2012 23:12:52 Jon Elson did opine:
Gene Heskett wrote:
Those too are valid questions, with very iffy answers for the hobbiest
like me. The improvement probably would be appreciated, but in
nearly 10 years of having the basic machinery, I have only re-couped
maybe
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