You don't have the build environment set up properly which probably means your just downloaded that folder from pd-l2ork git. This is why disis_gpio is not building as it requires access to g_canvas.h include from pd's source. I am not sure why that is since I cannot imagine disis_gpio requiring access to gui operations. That said, the spi has built ok according to your log so I am not entirely sure. The wiringPi error can be ignored. At this point you have several options to try out:
- depending how the permissions for the SPI device are configured on your
setup you may have to run pd with sudo privileges (sudo pd). This is absolutely necessary for the GPIO external but I thought it wasn't for the SPI. Nonetheless, it's worth a try.
- try installing pd-l2ork as it comes with these externals prebuilt and
I've tested them extensively on rev. B boards. Likewise, test it with and without sudo.
HTH On Sep 2, 2014 4:14 PM, "Jack" jack@rybn.org wrote:
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Hello,
On 09/02/2014 01:39 PM, Jack wrote: Hello,
I am trying to use [disis_spi] on my raspberry pi (Linux raspberrypi 3.6.11+ #538 PREEMPT Fri Aug 30 20:42:08 BST 2013 armv6l GNU/Linux ) with Pd 0.45.2. When I open the help patch 'disis_spi-help.pd' and click on [open /dev/spidev0.0(, in Pd console i get : could not open SPI device.
I used to use a C++ program until now with which I used to open "/dev/spidev0.0" and all was OK.
What can I do to solve this problem ?
Hi,
I haven't tried the external with pd-vanilla, although there is no reason I can think of that it would not work with vanilla. Did you make sure to load the necessary drivers (I assume you did since you mentioned you used to access it before via a different application, but if you loaded them manually and have rebooted RPi since, they would not be necessarily loaded this time around). Just to be sure try:
lsmod | grep spi
...and see if it lists spi-bcm2708, if not, do:
I get : spidev 5248 0 spi_bcm2708 4841 0
sudo modprobe spi-bcm2708 sudo modprobe i2c-bcm2708
If that works, you may want to add those at the bottom of your /etc/modules config file (one module per line, like so):
spi-bcm2708 i2c-bcm2708
So I guess I needn't to add these lines ?
This will ensure they get loaded every time you start the RPi.
BTW, which gen RPi do you have?
Model B.
What I do to have disis_spi.pd_linux is : $ cd pd-l2ork_rpi $ ./makeall.sh
But I get several errors :
fatal: destination path 'wiringPi' already exists and is not an empty directory. Already up-to-date. make: Nothing to be done for `static'. cc -DPD -O2 -funroll-loops -fomit-frame-pointer -fno-strict-aliasing
- -Wall -W -Wshadow -Wstrict-prototypes -Wno-unused -Wno-parentheses
- -Wno-switch -I../pd/src -I../../pd/src -I../../../pd/src
- -I../../../../pd/src -I../../../../../pd/src -o disis_gpio.o -c
disis_gpio.c disis_gpio.c:18:22: fatal error: g_canvas.h: No such file or directory compilation terminated. make: *** [disis_gpio.l_arm] Error 1 cc -DPD -O2 -funroll-loops -fomit-frame-pointer -fno-strict-aliasing
- -Wall -W -Wshadow -Wstrict-prototypes -Wno-unused -Wno-parentheses
- -Wno-switch -I../pd/src -I../../pd/src -I../../../pd/src
- -I../../../../pd/src -I../../../../../pd/src -o disis_spi.o -c
disis_spi.c ld -shared -o disis_spi.l_arm disis_spi.o -lc -lm strip --strip-unneeded disis_spi.l_arm rm disis_spi.o mv disis_spi.l_arm disis_spi.pd_linux
And after : $ pd disis_spi/disis_spi-help.pd If i click on [open /dev/spidev0.0( I get : could not open SPI device
Something else i can do ? Thanx for you help. ++
Jack
HTH
Ico
++
Jack
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-- Ivica Ico Bukvic, D.M.A. Associate Professor Computer Music ICAT Senior Fellow DISIS, L2Ork Virginia Tech School of Performing Arts
- 0141 Blacksburg, VA 24061 (540) 231-6139 ico@vt.edu
www.performingarts.vt.edu disis.music.vt.edu l2ork.music.vt.edu
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