pifce cad 2 ir problems

Could you tell us how you are running the scripts, which command exactly?

I'm guessing you are using Python 3.x. With Python 2.x, initialising SimpleQueue() without passing a context works, but Python 3.x requires a context defined (ctx)

Python 2.7.13 (default, Jan 19 2017, 14:48:08)

[GCC 6.3.0 20170118] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import multiprocessing.queues

>>> q=multiprocessing.queues.SimpleQueue()

>>>

--------------------------------------------------------------

Python 3.5.3+ (default, Jun  7 2017, 23:23:48)

[GCC 6.3.0 20170516] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> import multiprocessing.queues

>>> q=multiprocessing.queues.SimpleQueue()

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: __init__() missing 1 required keyword-only argument: 'ctx'

Hope this helps.

Fabio.

Forgot to add that for Python 3.x you should instantiate a SimpleQueue from the multiprocessing module, rather than directly from multiprocessing.queues. Try replacing:

self.event_queue = multiprocessing.queues.SimpleQueue()

with:

self.event_queue = multiprocessing.SimpleQueue()

(make sure you import multiprocessing)

Fabio.

I am running Python 3 and using it to open radio.py. If I do that w/ python 2 I get an error msg "Radio only works with 'python3'""

I am running Python 3 and using it to open radio.py. If I do that w/ python 2 I get an error msg "Radio only works with 'python3'""

gecoz last suggestion may do the trick then. Give it a try and let us know!

no luck so far--still does not work'

I'm missing something simple.
This simple code should work (it is an example from the PiFace documentation):

#piface cad ir test

#cat ~/.lircrc

#begin

#  prog = pifacecadexample

#  button = KEY_VOLUMEUP

#  config = one

#end

#begin

#  prog = pifacecadexample

#  button = KEY_VOLUMEDOWN

#  config = two

#end

import pifacecad

import time

import multiprocessing.queues

def print_ir_code(event):

    print(event.ir_code)

q=multiprocessing.queues.SimpleQueue()

pifacecad.PiFaceCAD()  # initialise a PiFace Control and Display board

listener = pifacecad.IREventListener(prog="pifacecadexample")

listener.register('one', print_ir_code)

listener.register('two', print_ir_code)

listener.activate()

time.sleep(20.0)

print("Stopping...")

listener.deactivate()

Try with this version, where I replaced the import and the the way SimpleQueue is istantiated:

import pifacecad
import time
import multiprocessing


def print_ir_code(event):
    print(event.ir_code)


q=multiprocessing.SimpleQueue()
    
pifacecad.PiFaceCAD()  # initialise a PiFace Control and Display board
listener = pifacecad.IREventListener(prog="pifacecadexample")
listener.register('one', print_ir_code)
listener.register('two', print_ir_code)
listener.activate()


time.sleep(20.0)
print("Stopping...")
listener.deactivate()

No. That did not work. Got this failure under Python 2:

Traceback (most recent call last):

  File "/home/pi/PiFace_stuff/piface_tst_ir_blog0.py", line 12, in <module>

    q=multiprocessing.SimpleQueue()

AttributeError: 'module' object has no attribute 'SimpleQueue'

Yes, it won't work with python 2. I wrote that thinking that you were using python 3. Just so we are on the same page, could I ask you which version are you going to use, python 2 or python 3? I believe you can use either, as stated on the PiFace CAD documentation. The choice is your, just let me know, then we can try and figure out what errors you get and why.

Fabio.