It's in a repo at: http://git.linuxcnc.org
--
Sebastian Kuzminsky
- Reply message -
From: "John Murphy"
Date: Wed, Apr 6, 2011 22:39
Subject: [Emc-users] HostMot2 FPGA source?
To: "Enhanced Machine Controller (EMC)"
I'm getting ready to integrate several mesa cards around the 7i43, a
I've used them. They did what they said they would. The boards I got back
worked & looked great. I'd use them again & I'd recommend them to friends.
--
Sebastian Kuzminsky
never be discouraged
just let your nerdy flourish
-Original Message-
From: "Kent A. Reed"
Subj: [Emc-users]
You can get a variable frequency pulse train out of a hostmot2 stepgen by
switching it to velocity mode. Look at the control-type and velocity-cmd pins.
http://www.linuxcnc.org/docs/devel/html/man/man9/hostmot2.9.html
--
Sebastian Kuzminsky
never be discouraged
just let your nerdy flourish
-
As you upgrade Linux, it installs new (hopefully bugfixed) versions of the
kernel. But it doesn't automatically remove the older versions of the kernel,
for in case the new version doesn't work.
Once you're happy that the new version of the kernel boots & works, you can
remove the older versio
The AnyIO boards already have 10K pull-up resistors on the input pins.
--
Sebastian Kuzminsky
never be discouraged
just let your nerdy flourish
-Original Message-
From: Michael Buesch
Subj: Re: [Emc-users] 7i43 GPIO Input Question
Date: Sat 2010 Feb 20 4:55
Size: 1K
To: emc-users@
PWM is "pulse width modulation". PDM is "pulse density modulation".
In PWM you have a carrier frequency, a duty cycle, and a resolution. The duty
cycle specifies what fraction of the cycle should be high, or active. The
resolution determines how accurately the requested duty cycle can be
i
With hardware step generators like the Mesa and Pico, emc2 sends a "desired
step frequency" command every millisecond or so (and reads from the hardware
how many steps it's actually taken since last time). The step signals are
generated on the 5i20 or similar, at the requested frequency, and se
How valuable is it for hostmot2 to have stand-alone gpio access (for the PCI
cards only)? It seems like sort of a klunky interface.
The differentiating feature of hostmot2 is the flexible firmware, which solves
this problem very neatly. So I still think the current interface is the right
one
;s ready for more
widespread testing. I've added a very simple & incomplete sample config,
it's in CVS (TRUNK and the 2.2 branch) but it's not in the released 2.2.5
package. It will be in 2.2.6 which is dues out real soon now.
You can see the sample configs here:
<http:
nned by the python
script.
Thanks again for all the help,
with best regards,
Seb James
--
Embedded Software Foundry Ltd.
Sheffield, UK.
Tel: +44 (0)845 4580277
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Still grepping t
ve port direction set to "IN" or 'OUT' on a per bit basis but AFAIK, the
> driver hardwires the I/O to the 16 IN followd by 8 OUT format.
That's right. We use a different configuration of pins on our 5i20, so
had to rewrite the hostmot configuration for the FPGA (Thanks
stic money tends to cross borders pretty
> easily, although getting the product across borders probably involves
> some annoying paperwork and customs fees.
We managed to get ours ok (into the United Kingdom), and I can recommend
Peter Wallace's support of the product highly.
cheers,
Seb
---
On Tue, 2007-05-29 at 07:37 -0500, Ray Henry wrote:
> Hi Seb
>
> I wrote the little ladder stuff in demo-step as a simple way to
> illustrate the flexibility of ladder.
>
> I agree completely with John that for any kind of serious, servo powered
> system, an estop that saf
rung and a realtime
> component are just about the same: if something (like a bug in an
> unrelated component) would stop one from running, it would stop the
> other.
Ok, I think my preference would be to use the comp then.
cheers,
Seb
ather than trying to build a
classic ladder scheme unless anyone here has a good reason for using
the classic ladder component? The only possible one I can think of is
that you might get more information about what signal has caused your
machine to stop.
Anything else?
regards,
Seb
st regards,
Seb James
Embedded Software Foundry Ltd.
Sheffield, UK
Tel: +44 (0)845 4580277
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On Tue, 2007-05-01 at 11:47 -0400, John Kasunich wrote:
> John Prentice wrote:
> > Seb
> >
> >>> if none of these are what you want then yes you need to write your own
> >>> VHDL.
> >> Yes, that's what I need to do..
> >>
> >
On Tue, 2007-05-01 at 07:06 -0700, Peter C. Wallace wrote:
> On Tue, 1 May 2007, Seb James wrote:
>
> > Date: Tue, 01 May 2007 14:26:35 +0100
> > From: Seb James <[EMAIL PROTECTED]>
> > Reply-To: "Enhanced Machine Controller (EMC)"
> >
> >
On Tue, 2007-05-01 at 16:35 +0300, Anders Wallin wrote:
> > By that I means would hostmot5-8 fix, say, pin 25 to be a
> > servo pwm direction output?
>
> yes, the hostmot-4 configuration pinout is in the manual:
> http://www.linuxcnc.org/docs/html/hal/drivers/index.html
>
> > Initially I need a
On Tue, 2007-05-01 at 08:56 -0400, John Kasunich wrote:
> Seb James wrote:
> > Hi List,
> >
> > This message is about the latest 5i20 FPGA code which John Kasunich said
> > he was working on in February this year (around then anyhow).
> >
> > The featu
right now. None of the
changelogs say anything about this code in a release, so I guess it
hasn't been released yet.
I'm going to try to make use of the code, so I may have some questions
for the list!
best rega
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