EMC2 running on Raspberry Pi?

With respect, I know FPGA, however, I ran the application with Picnc Jr on DMA and it leaves nothing to be desired. In fact, directly by GPIO had a poor guarantee the regularity of the pulses and the same does not occur with SPI + DMA;

That would be better if I could show some result migrating it to Cubieboard A20 (dual core with DDR3).

Best Regards,

Today is a great day
First result with Xenomai in A10 All Winner

RTT| 00:14:01 (periodic user-mode task, 100 us period, priority 99)
RTH|----lat min|----lat avg|----lat max|-overrun|---msw|---lat best|--lat worst
RTD| 0.124| 0.999| 9.624| 0| 0| 0.041| 15.999
RTD| 0.083| 1.041| 10.624| 0| 0| 0.041| 15.999
RTD| 0.124| 1.083| 13.791| 0| 0| 0.041| 15.999
RTD| 0.124| 1.041| 9.999| 0| 0| 0.041| 15.999
RTD| 0.124| 0.999| 9.791| 0| 0| 0.041| 15.999
RTD| 0.124| 0.999| 9.708| 0| 0| 0.041| 15.999
RTD| 0.124| 0.999| 9.583| 0| 0| 0.041| 15.999

Linux cubie 3.4.12-xenomai #2 PREEMPT Tue Feb 25 01:22:02 BRT 2014 armv7l GNU/Linux
A10 @ 1.01 GHz

total used free shared buffers cached
Mem: 815M 143M 671M 0B 20M 66M
-/+ buffers/cache: 56M 758M

Next: get SPI code from Raspberry and put on A10

Just an update guys,

I have ported the picnc board to run on a hacked A13 tablet . The camera interface has to be disabled to get access to the spi pins.

A portable touchscreen based LCNC controller is now possible.

Cheers!

Hello,

Very interesting, congratulations!

  Kinsa, A13 is very similar to the A10. : D
  I'm with RT kernel in A10, and this weekend I would port the code SPI / GPIO from raspberry. Apparently you did it, can you help me?

If you can show me the settings you made ​​...

Best Regards

You can get the code here:You'll have to modify the defines in HAL/picnc_grbl.h especially the CCM clock and gate values as I don't think the A10 shares the same settings.

Getting the SPI to work is a bit tricky as the documentation is sorely lacking. I must admit that RPi is way much better in this regard compared to the Allwinner chips.

Hello,

  You compiled the emc2 supporting any platform? example
  . / configure - prefix = / usr / local - with-platform = raspberry ...

Best Regards

I'm using the UBC3 branch and configured using the following setting:

Hello,

These were your steps? Forgive me for asking before testing. It will be several hours until the process is finished

git clone git://git.linuxcnc.org/git/linuxcnc.git linuxcnc-dev
cd linuxcnc-dev

git checkout -b v2.5_branch origin/v2.5_branch
git checkout v2.5_branch

cd debian
./configure -r
cd ..
dpkg-checkbuilddeps

cd src
./autogen.sh
./configure --prefix=/usr/local --with-xenomai --disable-build-documentation --with-kernel=/boot/config-3.4.12

make
make setuid
make install

Best Regards

ADBensi wrote:

Hello,

These were your steps? Forgive me for asking before testing. It will be several hours until the process is finished

git clone git://git.linuxcnc.org/git/linuxcnc.git linuxcnc-dev
cd linuxcnc-dev

git checkout -b v2.5_branch origin/v2.5_branch
git checkout v2.5_branch

cd debian
./configure -r
cd ..
dpkg-checkbuilddeps

cd src
./autogen.sh
./configure --prefix=/usr/local --with-xenomai --disable-build-documentation --with-kernel=/boot/config-3.4.12

make
make setuid
make install

Best Regards

I've used this one: github.com/mhaberler/asciidoc-sandbox/wi...RT-Operating-Systems

Hello,

  I have a problem, What it could be?
when I run . scripts/rip-environment to set up the environment I get error:
This script is only useful on run-in-place systems.

I try:

cd src
./autogen.sh
./configure --prefix=/usr/local --with-xenomai --disable-build-documentation
make
make setuid
make install
cd ..
source scripts/rip-environment

After over xterm (X11 sshd) I try:

cd src
make clean
./autogen.sh
./configure --prefix=/usr/local --with-xenomai --disable-build-documentation --enable-run-in-place --enable-simulator
make
make setuid
source scripts/rip-environment

And same error, "This script is only useful on run-in-place systems".

My shell set:
root@cubie:/var/source/linuxcnc # set
BASH=/bin/bash
BASHOPTS=cmdhist:expand_aliases:extquote:force_fignore:hostcomplete:interactive_comments:login_shell:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_LINENO=()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="37" [3]="1" [4]="release" [5]="arm-unknown-linux-gnueabihf")
BASH_VERSION='4.2.37(1)-release'
COLUMNS=214
DIRSTACK=()
DISPLAY=localhost:12.0
EUID=0
GROUPS=()
HISTFILE=/root/.bash_history
HISTFILESIZE=500
HISTSIZE=500
HOME=/root
HOSTNAME=cubie
HOSTTYPE=arm
IFS=$' \t\n'
LANG=pt_BR.UTF-8
LINES=56
LOGNAME=root
MACHTYPE=arm-unknown-linux-gnueabihf
MAIL=/var/mail/root
MAILCHECK=60
OLDPWD=/var/source/linuxcnc/src
OPTERR=1
OPTIND=1
OSTYPE=linux-gnueabihf
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PIPESTATUS=([0]="1")
PPID=13584
PROMPT_COMMAND='printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"'
PS1='\[\033[1;33m\]\u\[\033[1;37m\]@\[\033[1;32m\]\h\[\033[1;37m\]:\[\033[1;31m\]\w \[\033[1;36m\]\$ \[\033[0m\]'
PS2='> '
PS3='> '
PS4='+ '
PWD=/var/source/linuxcnc
SHELL=/bin/bash
SHELLOPTS=braceexpand:emacs:hashall:histexpand:history:interactive-comments:monitor
SHLVL=1
TERM=xterm
UID=0
USER=root
_=test