PiFace Problems

Sven, I never saw your edit before I updated the code. No worries, I've done a similar fix. It should work now.

I've slightly changed the naming of things too: instead of 'into' I'm now using 'direction' because it's clearer. This also uses predefined direction variables: IN_EVENT_DIR_ON, IN_EVENT_DIR_OFF and IN_EVENT_DIR_BOTH.

Check out the new instructions.

Hope that helps.

Hi, can I join the queue of disgruntled piface buyers (note not users) that has spent far too long trying to decode how to get this as yet useless board working?

I've updated as per previous posts.

My error message in response to an lxterminal command of piface/scripts/piface-emulator is

Bash ........emulator: input output error.

Any ideas please?

Like previous poster the piface was bought to help a 10 year old interact with a model railway set up.

At this moment I think rather than being customer ready this is more a geeks experiment that should not have reached production yet until all aspects of the set up instructions had been tested.

It's certainly failing the sales of goods act at the moment.....

Are you using the most up to date software. We've moved over to Python 3, now. You can get it from https://github.com/piface

> Bash ........emulator: input output error.

That looks like an error with bash and not the emulator. I can't seem to replicate your problem and my Python 2 emulator works when I issue the commands:

$ git clone https://github.com/thomasmacpherson/piface.git

$ cd piface/python/

$ sudo python setup.py install

$ cd ../scripts/

$ ./piface-emulator

Can describe how you reach your problem in more detail, please?

Thomas

If you want a better image showing the default jumpers you can use my picture.

http://www.element14.com/community/roadTestReviews/1452

If you want the fullsized image, PM me with your email.

Mark

Hello Thomas,
I have the PiFace 2.1 with the latest version of pifacecommon and pifacedigitalio on the last raspbian running. Control of IO is not a problem. But the interrupts do not work with python. The sample code, for example, shows no function. But the interrupts works fine withe the Java lib Pi4J. Do you have any idea what could go wrong?

best greetings Andreas

Hi, sorry for the delayed reply, I've been on holiday!

Are you using the example code from here: http://piface.github.io/pifacedigitalio/example.html#interrupts? Did you reboot after installing? Can you show me the code you are trying to use?

Pi4J is a Java library for accessing the GPIO pins, not PiFace (to my knowledge at least).

Hey Thomas,
thanks for your answer. I have reinstalled the distribution. I try the / usr/share/doch/python3-pifacedigitalio/examples/presslights.py program and also the example code on the webpage (ure link). Nothing works. But simple polling on a button works fine. So buttons and leds are working...

To Pi4J, "With the Pi-Face Java API interface now available in the libraries Pi4J (Pi4J in version 0.0.5-SNAPSHOT and later)" Source: http://www.savagehomeautomation.com/projects/raspberry-pi-programming -pi-face-with-java-pi4j.html
The API package comes with two examples for the piface PiFaceExample.java and PiFaceGpioExample.java. I compile and run the PiFaceExample (it use listener (interrupts)) and it ran as it should, so I think that the interrupts generally works?!

I hope you have another ideas

That's great news about Java support for PiFace!

Are you running the latest versions of the Python modules? Can you show me the output of the following commands:

$ python3 -c "import pifacedigitalio.version as p; print(p.__version__)"

$ python3 -c "import pifacecommon.version as p; print(p.__version__)"

Python3: 3.2.3 (Mar 1) GCC 4.6.3

PiFacedigitalio: 2.0.3

PiFaceCommon: 3.0.0

How about the outputs from the following commands:

groups

lsmod

cat /etc/modprobe.d/raspi-blacklist.conf

cat /lib/udev/rules.d/60-python3-pifacecommon.rules

I can't seem to replicate the issue I'm afraid.