[chuck-users] ChucK on a Beaglebone Black

Michael Heuer heuermh at gmail.com
Tue Oct 1 12:30:26 EDT 2013


Thank you for the advice.

I have maintained gentoo-based systems in the past but gave up when
they broke udev once too many times.  Looks like for crosscompiling
I'll need to set up two of them.  :)


On Tue, Oct 1, 2013 at 12:52 AM,  <meino.cramer at gmx.de> wrote:
> Hi Michael,
> what I will write here now is my personal opinion and based on my
> personal experience and it will definitely not match the opinion and
> or experience of others in any case... ;)
> Angstrom is good for starting BBW and BBB.
> I also started with Angstrom previously on my BBW but continously
> updateing this distro screwed up the whole thing after a while.
> You will find similiar posting on the beagleboard mailing list from
> time to time.
> Since I made good experience with Gentoo on my desktop PC I tried that
> on my BBW and it works clean and consistantly...until I tried to
> cross-compile the applications on my desktop PC. May be some leve
> eight failures, which normally are located in front of monitors and
> keyboards ;) some header settings from my PC were incorperated into
> the BBW Linux and KABOOM!...64bit is a little different from 32bit...
> As soon as I have confirmed that my new BBB is ok, I quit Angstrom
> and the eMMC and installed Gentoo on a SD-card and used that instead.
> I am really happy with that.
> But be warned! :)
> Gentoo is source-based. Means: Everything is compiled from ground up
> on the BBB. THIS TAKES TIME! Compiling a kernel natively on the BBB
> takes about eight houres. On the other side: The BBB consumes about
> 5W. Start the compile task before going to bed and the next morning
> will start with a new kernel. ;)
> The advantage of Gentoo is, that you will only compile applications,
> you will want for your projects. Nothing else will bloat your Linux
> system on the BBB -- something which is important especially on
> embedded systems due to space limitations. Gentoo is very flexible,
> too.
> The precompiled rootfs (link to it) for Gentoo and further
> instructions you will find here:
> http://dev.gentoo.org/~armin76/arm/beagleboneblack/install.xml
> The Gentoo documentation is a good source of information, too.
> The kernel is the only thing which I still compile on my PC. At this
> place a BIG THANK YOU will go to Robert Nelson, which sets up a really
> easy and flexible kernel-building-suit for the BBB and BBW.
> All you need kernelwise you will find here:
> http://eewiki.net/display/linuxonarm/BeagleBone
> He also gives instructions how to build "Das U-Boot", the bootloader.
> This way (Gentoo+Robert Nelsons kernel+U-Boot) no part of the Linux
> system will be out of your control. You will be able to modify
> anything.
> And: Since Gentoo is source based, the complete gcc-suite is already
> there -- natively on your BBB.
> You may need to dig a liitle deeper into the docs and manuals for
> doing so, though. But, hey: UNIX is not Windows.
> The kernel I am using is Robert Nelsons kernel version 3.8.13.
> I am using the LCD7 (a2) cape and the AUDIO cape (A1) together with
> my BBB, and it needs a little hacking the device tree and the kernel
> sources to let play them all together. You will need to disable the
> HDMI and the eMMC to be able to use this combo.
> Chuck is compiled with alsa support. There is currently no X11
> running. There is no .asoundrc.
> Angstrom has a limited support of applications. Since it is binary
> based, you will be out of luck, if the application you want is not
> included.
> Gentoo includes ChucK in its emerge/ebuild system.
> If you need help to hack the kernel source and the devicetree to let
> the AUDIO cape work for your BBB let me know. But I will take no
> responsibility if it will not work, since my modifications are
> only tested for a specific setup with specific versions of the board:
> BB-BONE-AUDI-01 (Audio cape)
> Beaglebone black A5C
> BB-BONE-LCD7-01 (LCD cape)
> If you dont want to use the LCD7 cape it is no problem to modify
> the hack to only use the Audio Cape...
> Best regards,
> mcc
> Michael Heuer <heuermh at gmail.com> [13-10-01 07:00]:
>> Hey, very cool!  I have a Beaglebone Black sitting on my desk still in
>> the box for just this purpose.
>> There are a lot of things that might effect audio performance:  what
>> kernel are you using?  what audio card?  what driver?  is chuck
>> compiled for jack or alsa?  what are your jackd settings?  what are
>> your alsa settings in .asoundrc? etc.
>> I am planning to use mine with a USB audio card but wasn't sure which
>> linux distro to start with.  I assume chuck is not available for
>> Angstrom?
>>    michael
>> On Mon, Sep 30, 2013 at 11:44 PM,  <meino.cramer at gmx.de> wrote:
>> > Hi,
>> >
>> > I managed to compile chuck on a beaglebone black (using Gentoo).
>> >
>> > Most of the example files play well, but there are some files,
>> > which produce a somehow interrupted sound.
>> >
>> > If this would be due to too less processing power of the CPU
>> > (ARMv7 Processor rev 2 (v7l) at 1GHz) -- how can I verify it?
>> >
>> > What else could produce this problem?
>> >
>> > Best regards,
>> > mcc
>> >
>> >
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