also, Alt+clicking on any part of a window should let you drag it (most linux distros have this feature -- I imagine Raspbian does)

On 03/19/2014 09:10 AM, Pierre Massat wrote:

Hi,

I have never managed to get pd-extended to work properly on Raspbian. The vanilla version available from the repos works better. You can then install external libs if you need them.

Cheers,

Pierre.

2014-03-19 13:29 GMT+01:00 Christian Fischer <mail@c-m-fischer.de mailto:mail@c-m-fischer.de>:

Hi everyone,

two (beginner) questions regarding Pd-extended 0.43.3 on Rpi
Raspbian Wheezy:

- There is an I/O error message in the Pd window as there is only
an audio out (but no in) on the Rpi. Just deactivating the inlet
in Pd audio settings doesn't help. ALSA is used by default. What
can be done to avoid error message? However sound out works fine.

- When opening a new Pd window (ctrl+n), it pops up so high in the
bottom left corner of the screen, that you can not see the menu
anymore. Therefore the window is not moveable or usable. Used Pd
already on various PCs and OS but this I have never experienced.
What can be done?

Thanks!
christian
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There is also pd-l2ork for RPi. We are just readying a release with a comprehensive support for GPIO (including hardware and software PWM), as well as MCP3008 AD converter (for analog sensors). There is also a fairly detailed documentation on how to run RPi headless via a laptop, while sharing network connection. See: http://l2ork.music.vt.edu/main/?page_id=2288

HTH

On 03/20/2014 12:37 PM, David Medine wrote:

FYI

There is also a RPi GPIO object for Pd by Miller Puckette here: http://msp.ucsd.edu/syllabi/206.13w/index.htm http://msp.ucsd.edu/syllabi/206.13w/index.htm

and the same code with a makefile and build for UDOO here: https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio

I did see the note from garthz about the architecture collisions. I will attend to this. Anyway, make sure to use the gpio.l_arm version -- just delete the other two to avoid problems.

Indeed, disis_gpio is loosely based on gpio. It however also offers things that gpio (AFAIK) doesn't, like multithreaded pusle-width-modulation (hardware on pin 18 and software on all pins) with an Arduino-like 0-1023 range. disis_spi is a completely new beast that allows interfacing with MCP3008 AD converter and provides up to 8 analog input channels that can provide high-resolution streams with values 0-1023. So, pd-l2ork externals essentially look to provide an Arduino-like environment.

Hi Ivica,

I was working on a small external for MCP3008 using wiring pi, but I'd love to try yours if it is possible. Will it be possible to use it as an external like gpio with vanilla? are you using wiring pi for this?

There is nothing in those externals to prevent them from being used in vanilla. They can be found in the <root git>/l2ork_addons/raspberry_pi/disis_gpio and disis_spi folders (latter is the MCP3008 one). Spi one does not rely on wiring pi. AFAIK wiringpi does not offer spi support but I could be wrong.

Also, how are you getting the multiple pwm streams?

I partially rely on wiringpi inside disis_gpio for software pwm on all pins (I say partially because wiringpi can only create a new thread for software pwm but does not offer ability to close the thread other than exiting the program, which is not an option for an environment like pd). So, each opened pin will have a separate high priority thread that gives you a 1000Hz PWM. disis_gpio also supports hardware pwm on pin 18 and that one has some kind of a logarithmic curve and as such behaves distinctly different but I simply did not want to go into anything higher than 1000Hz as that would choke the cpu.

HTH

best,

J

On Mar 20, 2014, at 1:16 PM, Ivica Ico Bukvic ico@vt.edu wrote:

On 03/20/2014 12:37 PM, David Medine wrote:

FYI

There is also a RPi GPIO object for Pd by Miller Puckette here: http://msp.ucsd.edu/syllabi/206.13w/index.htm http://msp.ucsd.edu/syllabi/206.13w/index.htm

and the same code with a makefile and build for UDOO here: https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio

I did see the note from garthz about the architecture collisions. I will attend to this. Anyway, make sure to use the gpio.l_arm version -- just delete the other two to avoid problems.

Indeed, disis_gpio is loosely based on gpio. It however also offers things that gpio (AFAIK) doesn't, like multithreaded pusle-width-modulation (hardware on pin 18 and software on all pins) with an Arduino-like 0-1023 range. disis_spi is a completely new beast that allows interfacing with MCP3008 AD converter and provides up to 8 analog input channels that can provide high-resolution streams with values 0-1023. So, pd-l2ork externals essentially look to provide an Arduino-like environment.

Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

Spi one does not rely on wiring pi. AFAIK wiringpi does not offer spi support but I could be wrong.

Hi Ivica,

yes it does and it has a C api. It is actually very good and easy to implement.

Thanks for all info on the external. I'll check it out as soon as I have a bit of time again…

best,

Jaime

Also, how are you getting the multiple pwm streams?

I partially rely on wiringpi inside disis_gpio for software pwm on all pins (I say partially because wiringpi can only create a new thread for software pwm but does not offer ability to close the thread other than exiting the program, which is not an option for an environment like pd). So, each opened pin will have a separate high priority thread that gives you a 1000Hz PWM. disis_gpio also supports hardware pwm on pin 18 and that one has some kind of a logarithmic curve and as such behaves distinctly different but I simply did not want to go into anything higher than 1000Hz as that would choke the cpu.

HTH

best,

J

On Mar 20, 2014, at 1:16 PM, Ivica Ico Bukvic ico@vt.edu wrote:

On 03/20/2014 12:37 PM, David Medine wrote: FYI

There is also a RPi GPIO object for Pd by Miller Puckette here: http://msp.ucsd.edu/syllabi/206.13w/index.htm

and the same code with a makefile and build for UDOO here: https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio

I did see the note from garthz about the architecture collisions. I will attend to this. Anyway, make sure to use the gpio.l_arm version -- just delete the other two to avoid problems.

Indeed, disis_gpio is loosely based on gpio. It however also offers things that gpio (AFAIK) doesn't, like multithreaded pusle-width-modulation (hardware on pin 18 and software on all pins) with an Arduino-like 0-1023 range. disis_spi is a completely new beast that allows interfacing with MCP3008 AD converter and provides up to 8 analog input channels that can provide high-resolution streams with values 0-1023. So, pd-l2ork externals essentially look to provide an Arduino-like environment.

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Thanks everybody for the help!

clicking alt worked. However Pd extended freezes sometimes. Seems to work better with vanilla. At least so far.

Got also CCRMA have to test it as well as headless.I will report if anything interesting happens...

Thx again! c.

Am 20.03.2014 um 07:47 schrieb Simon Wise simonzwise@gmail.com:

On 19/03/14 23:29, Christian Fischer wrote:

...

• When opening a new Pd window (ctrl+n), it pops up so high in the bottom

left corner of the screen, that you can not see the menu anymore. Therefore the window is not moveable or usable. Used Pd already on various PCs and OS but this I have never experienced. What can be done?

As mentioned already openbox (the default desktop for the Pi) does the usual thing and Alt-drag anywhere on the window should move it where you want.

If you are using linux (or Apple) I find connecting to the Pi with ethernet and:

ssh -X pi@192.168.1.20 replacing the IP with the actual one of course, it is usually announced on the console at the end of the boot process, then set your laptop ethernet to a compatible manual IP you are set to go.

is a very comfortable way to work, the pd windows are then on my laptop and the Pi does not need to run a desktop at all.

pcmanfm &

should get you a file browser window, so you can navigate and open things in the familiar GUI way, if that is what you prefer.

Simon

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