-
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hat makes modern PC class processors so
terrible for realtime control.
In hindsight, the pin names should probably have been .ticks and .ticksmax (or
.clocks and .clockmax) instead of .time and .tmax.
Regards,
--
John Kasunich
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something else.
Someone (definitely not me) will need to step forward to port HalScope to
another GUI platform.
HalScope is an important tool, and is written in C (not C++) using GTK.
--
John Kasunich
jmkasun...@fastmail.fm
---
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
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nk you for honoring my wish.
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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> Emc-developers mailing li
you make "hal_ppmc", and "hal_ppmc_old" and
"hal_ppmc_not_so_old"?
Better to have command line args with meaningful names like "change_dir=1" for
the old behavior, and "change_dir=0" for the new behavior. The default should
be the old behavior, and
the file? Perhaps that would be easier?
No halui button needed. The preview can do the violation check. As
you say, it would use the s-word in effect at the point the G33 is encountered.
John Kasunich
jmkasun...@fastmail.fm
--
pindle SPEED is manually controlled". Spindle
on/off is under LinuxCNC control using M3/M5 (I don't have reversing, so
M4 doesn't work).
>
--
John Kasunich
jmkasun...@fastmail.fm
--
Check out t
plined enough, he can use the S-word to tell
LCNC how fast he intends to run the spindle. But LCNC can't rely on that
being the actual spindle speed.
--
John Kasunich
jmkasun...@fastmail.fm
--
Check out the
K flag.
>
> Is this something that should be fixed, or am I reading the
> documentation wrong?
>
I think it is a terminology thing. Where the manual says "it is an error",
read it to mean "if you do this, you made an error and all bets are off",
rather tha
chasing thing? If the latter, you probably don't need a
large part of LinuxCNC, including NML, and can probably do all or most
of the application using real-time modules such as limit3.
--
John Kasunich
jmkasun...@fastmail.fm
-
On Fri, Nov 25, 2016, at 11:04 AM, Gene Heskett wrote:
> On Friday 25 November 2016 10:30:35 John Kasunich wrote:
>
> > Part 2 - many if not most pin names start with the instance name.
> > For example, component "or2_0" has pins named "or2_0.in0",
>
of you and for those that don't celebrate I
> am sure I will eat enough Turkey for you as well.
>
> Thanks,
>
> Jim
> --
> ___
> Emc-develope
efore must belong to the
new comp. Repeat till all are loaded. Then halcmd quit to cleanup.
--
John Kasunich
jmkasun...@fastmail.fm
--
The Command Line: Reinvented for Modern Developers
Did the resurgence o
On Fri, Oct 28, 2016, at 11:26 AM, Jim Craig wrote:
> On 10/28/2016 10:02 AM, John Kasunich wrote:
> >
> > On Fri, Oct 28, 2016, at 10:29 AM, Jim Craig wrote:
> No, it is not using the -s option. However it does not appear that it
> will fix the issue either. Below is a sni
eresting.
But as has been pointed out, the challenge of components that change
their pin-list based on loadrt parameters makes it tough.
--
John Kasunich
jmkasun...@fastmail.fm
--
The Command Line: Reinvented for Mo
comp.
Definitely beats parsing man pages. Perhaps XML?
Non-comp components would need a (one-time) manually generated file.
--
John Kasunich
jmkasun...@fastmail.fm
--
The Command Line: Reinvented for Modern Devel
rench and relying on the spindle brake and
R8 collet.
--
John Kasunich
jmkasun...@fastmail.fm
--
Check out the vibrant tech community on one of the world's most
en
pindle encoder tells LinuxCNC how fast the spindle is going and
thus allows for synchronized moves, but:
1) LinuxCNC can't change the speed if it doesn't like it
2) LinuxCNC doesn't know the speed at the interp level, because the S-word
means nothing. Only the encoder feedback can tell
-
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--
John Kasunich
jmkasun...@fastmail.fm
-
that prevents you from making or breaking connections after
the "start" command. HAL is designed to allow interactive use.
--
John Kasunich
jmkasun...@fastmail.fm
--
_
is used only for a very limited number
of pins. The one that comes to mind is encoder index-enable, where
it is used as a handshake. One component sets the index-enable true
telling the encoder driver to start looking for an index. When the driver
detects the index, it sets the signal false to
gt; Shouldn't that be a capital offense?
>
> Cheers, Gene Heskett
Any and all forms of spam and phishing should be a capital offense.
--
John Kasunich
jmkasun...@fastmail.fm
--
What NetFlow Analyzer can do for yo
dammit, hit the wrong key and sent in the middle of editing
my thoughts on this are still muddled, but I added a couple
of things...
On Thu, Jul 21, 2016, at 05:57 PM, John Kasunich wrote:
> I started to write a "quick" reply, but the deeper I look
> the more complex it gets -
--
> What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
> patterns at an interface-level. Reveals which users, apps, and protocols are
> consuming the most bandwidth. Provides multi-vendor support for N
maintenance or setup rather than
normal work. Jogging in cartesean space is extremely
common.
This train of thought leads me to think that the the
existing manual mode needs to be split into joint-manual
(FREE) and axis-manual (TELEOP).
John Kasunich
> If the gui knows what linuxcnc is doing t
er made that change, that is a bug.
Everything else is irrelevant.
The fix should be to return the base-thread to 30,000nS.
--
John Kasunich
jmkasun...@fastmail.fm
--
What NetFlow Analyzer can do for you? Moni
resent their vision of the future. This family event has something for
> everyone, including kids. Get more information and register today.
> http://sdm.link/attshape
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nterpreted as a floating point number, 2.10 sorts before 2.2
It is only monotonically increasing if you interpret it as two integers
separated by a dot. Humans can interpret it any way they want, but
how do programs interpret it?
--
John Kasunich
jmkasun...@fastmail.fm
-
data untouched!
> https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
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John Kasunich
jmkasun...@fastmail.fm
On Wed, May 11, 2016, at 09:46 PM, Andy Pugh wrote:
>
> I doubt that anyone is using it,
If we want to know if someone is using it we should ask the question on the
users list.
You won't necessarily find a maintainer there, but you might find out if it has
users/advocates.
st one blind
alley, on 24-Nov I reverted a bunch of work and started over.
--
John Kasunich
jmkasun...@fastmail.fm
--
Find and fix application performance issues faster with Applications Manager
Applications Ma
alias gpio1 x-pos-limit
# these lines connect things that depend on pin function
net x-pos-limit => axis.0.pos-lim-sw-in
net x-neg-limit => axis.0.neg-lim-sw-in
# these lines connect LEDs that depend only on physical pin
net gpio0 => pyvcp-led0
net gpio1 => pyvcp-led1
--
J
ime HAL components
as loadable kernel modules. Python (or any other interpreted language) simply
does not work at all in that environment.
Non-realtime modules are normal Linux processes. I believe that there is a
library
to allow Python to interact with HAL in that environment.
John Kas
or keyboard.
--
John Kasunich
jmkasun...@fastmail.fm
--
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Monitor end-to-end
ntal
button press during a program or an MDI move could damage the
part. When in auto, g-code from a program or the keyboard is in
total control of the machine, and I would argue that is a good thing.
John Kasunich
--
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John Kasunich
jmkasun...@fastmail.fm
---
fix it, you don't own it.
> http://www.ifixit.com/Manifesto
>
> --
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> Emc-developers@lists.sourceforge.net
> https://lists.
hat tells you
where you are at all times. But others are basically incremental, with the
ability to squirt out an absolute position on request (usually a serial
interface).
As with the pot example, there needs to be a way to get that absolute position
into LinuxCNC.
--
John Kasunich
-
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John Kasunich
jmkasun...@fastmail.fm
---
eger.
When you build a machine you must select the step size. If you need
0.1mm accuracy you must build a machine with a step size significantly
smaller than 0.1mm.
Very few real achines have step sizes larger than 0.025mm. Most
are closer to 0.002mm. So the error due to integer steps is ver
On Tue, Aug 18, 2015, at 02:47 PM, Jeff Epler wrote:
> On Tue, Aug 18, 2015 at 12:50:55AM -0400, John Kasunich wrote:
> > That's simply a matter of using the "net" namespace (and a consistent
> > net name) instead of the "pin" namespace.
>
> Yes.
AIK panels are too primitive to do this sort of mdi command crafting
> and so we come by another road to this ill-considered feature)
That is a separate discussion, and I don't have an opinion.
>
> Jeff
>
> ------
&g
t kind of implies that somehow the interpreter captures a snapshot of the
values
of all HAL items wt the start of g-code execution, so that later if/when it
encounters
a #<_hal[foo]> expression it can look for the hal name and get the corresponding
value. I find it hard to believe t
On Mon, Aug 17, 2015, at 02:11 PM, John Kasunich wrote:
>
>
> On Mon, Aug 17, 2015, at 12:29 PM, andy pugh wrote:
> > On 17 August 2015 at 16:49, John Kasunich wrote:
> > > If you start thinking about this from a timing/synchronization
> > > perspective,
On Mon, Aug 17, 2015, at 12:29 PM, andy pugh wrote:
> On 17 August 2015 at 16:49, John Kasunich wrote:
> > If you start thinking about this from a timing/synchronization perspective,
> > then
> > there is nothing magic about reading the pins when you hit RUN. It could
&
no motion component or
HAL at all, so where does the data come from? Adding this new functionality
would make things worse, I think.
Just my $0.02. Of course, I don't have to implement it, so my opinion is worth
even less than that.
--
John Kasunich
jmkasun...@fastmail.fm
---
eatures. A particular machine config (INI+HAL files)
can completely change the behavior of the G-code.
Whether or not that is a good thing is something I don't neccessarily
have
backwards.
That said, I'm not in a position to do the coding to make it work right
myself, so I guess I shouldn't complain.
> Thanks so much for taking the time to read through this code. It's
> something we will benefit from doing mor
ree velocity mode stepgens. It doesn't scale well to larger
amounts
of data (like a 256 point screw compensation curve).
--
John Kasunich
jmkasun...@fastmail.fm
--
___
On Mon, Jul 27, 2015, at 12:08 PM, Brian wrote:
> On Mon, Jul 27, 2015 at 11:54 AM, John Kasunich
> wrote:
>
> > Another implementation detail is how to get the screw comp data to the
> > compensation component. Realtime HAL components don't have a clean
> >
to solve that problem
another way.
>
> Brian
> ------
> ___
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> https://lists.source
gt; so it's fine.
>
IMO estop should ensure (in a fail-safe way) that the spindle won't turn.
Unless you are going to put a contactor on the VFD output (usually
discouraged by VFD makers), killing the VFD power is the only way.
As you say, it is good to support b
Deep dive visibility with transaction tracing using APM Insight.
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John Kasunich
jmkasun...@fastmail.fm
of a few different
> scenarios where we need to use feed override on jog moves.
--
John Kasunich
jmkasun...@fastmail.fm
--
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The offset
from the THC goes into limit3, and even if it instantly steps,
the output of limit3 obeys acceleration and velocity limits.
That output would then go to the offset block.
--
John Kasunich
jmkasun...@fastmail.fm
--
t.
In your case, you need to choose between option 1 and 2 above.
Since you say it knows which axis is on limit, it sounds like you
chose option 1.
You can change your mind if you like option 2 better.
John Kasunich
regardless of what later generations
of CPU and/or compiler do.
John Kasunich
On Thu, Apr 24, 2014, at 06:10 AM, EBo wrote:
> Turns out there are some places where where they specify "long double"
> in libnml. Should I convert that to a float64, or a float128 (which it
> is
y.
For PCs, floating point math is pretty much as fast as integer math.
(Some operations are faster actually.) I think the same applies to
ARMs like BeagleBone.
--
John Kasunich
jmkasun...@fastmail.fm
--
Learn Graph
tool and part specifics.
Since Gene uses home to deal with tool and part specifics,
he has the side effect of limits moving around.
--
John Kasunich
jmkasun...@fastmail.fm
--
Put Bad Developers to Shame
Dominate Develo
a permanent runtest, just a one-time thing to make
sure the pointer stuff is right.
--
John Kasunich
jmkasun...@fastmail.fm
--
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is t
the
higher feed, you won't get it.
--
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"Graph Databases" is the definitive new guide to graph dat
d on the size?
>
I didn't know you could copy structures like that in C.
Does it work for any size structure?
When was that added to the language? I'm 99.4% certain
that in the K&R days you had to copy structs yourself.
Is it maybe a C99 thing?
Clearly, that is the r
On Sun, Mar 16, 2014, at 08:55 PM, Michael Haberler wrote:
>
> Am 17.03.2014 um 01:47 schrieb John Kasunich :
>
> > I must admit that it pains me a bit to use memcpy for
> > an object that is at most 64 bits long. Doesn't memcpy
> > have special code to
> Am 17.03.2014 um 01:06 schrieb John Kasunich :
>
> >
> > If you can be sure that hal_float_t is the largest member on
> > all platforms, then it could just be:
> >
> > *((hal_float_t)(data_addr)) = pin->dummysig.f;
>
> that is exactly the k
in the field,
> this first edition is now available. Download your free book today!
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--
John Kasunich
jmk
sig->writers--;
3132 }
3133 if (pin->dir == HAL_IO) {
3134 sig->bidirs--;
3135 }
3136 /* mark pin as unlinked */
3137 pin->signal = 0;
3138 }
I'm not 100% sure about the deta
On Sun, Mar 16, 2014, at 07:59 PM, John Kasunich wrote:
> new memcpy(data_addr, &pin->dummysig, sizeof(hal_data_u));
I'm not sure if memcpy is neccessary here, the only
requirement is to copy the value from one place to
the other. hal_data_u is a union that can conta
= 0 ) && ( sig->bidirs ==
0 )) {
new /* this is the first pin for this signal, copy value from pin's
"dummy" field */
new memcpy(data_addr, &pin->dummysig, sizeof(hal_data_u));
1098 /* update the signal's reader/writer/bidir counts */
--
J
a
compiled in default value, he gets to pick which one
wins by the order of the pins in the net command.
I just don't see how the HAL_DRIVING_VALUE
attribute helps things. In essence, we already have
that. An OUT pin has HAL_DRIVING_VALUE
true. An IN pin has it false. Hal_lib already
e
On Sun, Mar 16, 2014, at 06:16 PM, Michael Haberler wrote:
>
> Am 16.03.2014 um 23:02 schrieb John Kasunich :
>
> > I think the only legitimate use case for I/O HAL pins is
> > something like the index-enable on encoders
>
> It might be less than helpful to dis
At the beginning of my last message, I wrote:
On Sun, Mar 16, 2014, at 06:02 PM, John Kasunich wrote:
> I think the only legitimate use case for I/O HAL pins is
> something like the index-enable on encoders
And near the end I wrote:
> As an aside, if a GUI widget wants to preset it
an aside, if a GUI widget wants to preset itself
to the current value of the signal, then its pin
should probably be an I/O rather than OUT pin.
That preset function is risky. Typically a GUI
builder determines the upper and lower limits of
the slider - perhaps 0.5 and 50 for a P-gain, f
ad if input was probably a mistake.
But I don't remember the discussion (if any)
at the time. Changing from parameter to pins
was definitely the right thing to do, but I'm not
so sure about the type of pin.
--
John Kasunich
jmkasun...@fastmail.fm
--
_shop/
> > http://www.wallacecompany.com/E45/
> >
> > ------
> > Subversion Kills Productivity. Get off Subversion & Make the Move to
> > Perforce.
> > With Perforce, you get hassle-free workf
its of changing that?
Are those benefits worth the effort of doing code audits on stepgen,
pwmgen, encoder, etc.?
--
John Kasunich
jmkasun...@fastmail.fm
--
Subversion Kills Productivity. Get off Subversion & Mak
f that time, both were safe from modification by the slow
thread, and neither one needed to be copied to a local. Under
the new assumptions, both are vulnerable, and both need to
be copied to locals.
Because velocity and acceleration limits are independent
attributes, there is no need to worry ab
ptions? I'm not aware of
> any right away.
Stepgen, pwmgen, and encoder are the ones I can think of
right now.
--
John Kasunich
jmkasun...@fastmail.fm
--
Subversion Kills Productivity. Get off Subversion &a
danger of an interrupting thread reading a bad combination.
That is the situation we are discussing - sets of more than one variable
(or HAL signal) that need to be transferred together.
--
John Kasunich
jmkasun...@fastmail.fm
--
that were designed to work together. HAL users can
literally connect anything to anything. There may be
traps for the un-wary in that situation, but the vast majority
of such signals are atomic and really no problem. A
parport driver in the b
. My gripe is that if you've
gone to the trouble of making sure the error can't occur, then why
waste CPU cycles testing for it.
Certainly the error can't occur in the existing code, because the entire
ringbuffer isn't there. It simply communicates using a couple of shared
va
On Sun, Mar 2, 2014, at 02:29 PM, Michael Haberler wrote:
>
> Am 02.03.2014 um 15:21 schrieb John Kasunich :
>
>
> > There are several variables that are used to communicate
> > between the two parts. The faster part was written assuming
> > that those variabl
different scheduling. Even in sim mode where RT behavior is not
guaranteed, we do promise that if you base thread is 100uS and
your servo thread is 1mS, the base thread will run 10 times between
invocations of the servo thread. I believe that it is important that
faster threads have higher prior
hould be capable of simulating
ANY valid configuration, the only limitation being a lack
of hard-real-time timing guarantees (and possibly lack of
hardware drivers because of permissions).
--
John Kasunich
jmkasun...@fastmail.fm
---
nch is always
> available from the buildbot.
>
> On the other hand, I do not know of a reason NOT to move to 2.5.
>
Lazyness?
I'm still running 2.3.5 on my machine.
--
John Kasunich
jmkasun...@fastmail.fm
---
ther rendering it. I think the decision about which side is the inside is
based on the order that the points are specified, and maybe when you
mirrored things you confused it?
Again, just guess, and I might be totally wrong.
--
John Kasunich
jmkasun...@fastmail.fm
--
world, and many of the hoops that "newinst" needs to jump through are
either gone or very different in that world.
John Kasunich
--
Rapidly troubleshoot problems before they affect your business. Most IT
hint if something takes too much time.
>
Better yet, halscope motion-command-handler.time (or the .time
pin associated with any other RT function you are suspicious of).
If you are already triggering the scope on a constraints violation
you should get a good idea of whether a time over-run mig
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&g
net signame achieves the same thing.
"net signame pinname" uses the type of pinname to determine
the type of the signal it creates (boolean, s32, float, etc). If there
is no pinname, it doesn't know what type to create. I would be
astonished if "net signame (blank)&quo
aptures the position
and resets the enable pin, so the application knows that it is done.
In principle this could be done by using two separate pins at each end
and two separate signals, but using a single signal is clea
On Tue, Nov 5, 2013, at 11:20 AM, Michael Haberler wrote:
>
> Am 05.11.2013 um 16:27 schrieb andy pugh :
> > One issue is that the NIST design is very specific that only one thing
> > can ever change another thing, ("NIST logic") and you are proposing to
> > change that. I am not sure that is a
th
> bill for what we are using. Sherline I believe hosts these lists.
>
I'm pretty sure it has been five years or more since Sherline was doing
any of our hosting.
--
John Kasunich
jmkasun...@fastmail.fm
--
ion, either by adding more HAL
components or by making a custom version of the "spindle-bundle"
comp.
--
John Kasunich
jmkasun...@fastmail.fm
--
October Webinars: Code for Performance
Free Intel webinars can
output and a pin (or pair of pins) that
indicate the sign of the input. Having written that comp,
it can be used anywhere that a speed/direction drive is
being used, not just on a spindle.
John Kasunich
On Sun, Sep 29, 2013, at 06:14 PM, Chris Morley wrote:
> Here is a patch for adding two pin
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