Re: [Xenomai] BeagleBone + BeBoPr 3D Printing

From: 嵌入式工程师 <ericvic@163.com>
To: Michael Haberler <mail17@mah.priv.at>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] BeagleBone + BeBoPr 3D Printing
Date: Mon, 3 Jun 2013 09:46:48 +0800 (CST)	[thread overview]
Message-ID: <32e35fcf.2ff3.13f07b71cdf.Coremail.ericvic@163.com> (raw)
In-Reply-To: <E921A3FF-ED99-4D82-8FB8-92F061A97E42@mah.priv.at>

sorry ，before I did not say clearly。It is Every 500Millisecond gpio send an interrupt
At 2013-06-02 00:57:27,"Michael Haberler" <mail17@mah.priv.at> wrote:
>things are coming together:
>
>Anfang der weitergeleiteten Nachricht:
>
>> Von: Charles Steinkuehler <charles@steinkuehler.net>
>> Betreff: [Emc-users] BeagleBone + BeBoPr 3D Printing
>> Datum: 01. Juni 2013 18:39:24 MESZ
>> An: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
>> Antwort an: "Enhanced Machine Controller \(EMC\)" <emc-users@lists.sourceforge.net>
>> 
>> -----BEGIN PGP SIGNED MESSAGE-----
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>> 
>> So I finally got enough of the pieces put together to run a print on
>> my MendelMax 3D printer using the BeagleBone with the BeBoPr cape and
>> LinuxCNC.  This is using the 3.2 Xenomai kernel from Michael Haberler
>> to get LinuxCNC working well on the 'Bone, and custom PRU code doing
>> step/dir and pwm generation.  Thanks also to Ian for the bb_gpio
>> module, which came in very handy.
>> 
>> Video or it didn't happen...
>> 
>> My first ever 3D print from the BeagleBone, second print using
>> LinuxCNC (the first LinuxCNC print used an x86 running preempt-rt).
>> The X axis is mirrored and the configuration and slicing settings need
>> to be tweaked to improve print quality, but overall it came out pretty
>> good:
>> 
>> http://www.youtube.com/watch?v=n2IoHOZipLU
>> 
>> ...I particularly like the acceleration control in LinuxCNC.  It seems
>> smoother than the Arduino code.  Now if I could just get a slicing
>> program that outputs true arcs and nurbs...  :)
>> 
>> Code is in the arm335x-hal-pru-tasks branch of Michael's git repository:
>> 
>> http://git.mah.priv.at/gitweb?p=emc2-dev.git;a=shortlog;h=refs/heads/arm335x-hal-pru-tasks
>> 
>> Up next is the great migration to a 3.8 kernel, where I get to craft
>> the magic device tree fragments necessary to get this all working again.
>> 
>> - -- 
>> Charles Steinkuehler
>> charles@steinkuehler.net
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>> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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>> iEYEARECAAYFAlGqI7sACgkQLywbqEHdNFwEkwCgw6n50qq9fP9lQLltBwTTp/0u
>> rm8AoMU5hhohJljA6gpu5T+wsE/sOAES
>> =6IRC
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>> 
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