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[Discuss-gnuradio] max_streams problem in own module
From: |
Charles Clancy |
Subject: |
[Discuss-gnuradio] max_streams problem in own module |
Date: |
Wed, 2 Mar 2005 10:23:22 -0500 (EST) |
I'm trying to write a gnuradio 2.2 module that computes the phase of a
complex baseband signal, mostly as a learning excercise in developing a
4-FSK receiver. (Is there an existing module that could do this for me?)
I know my installation works, because I've used it for lots of other fun
stuff so far.
I have mypkg.i that defines the package and the mypkg_phase_cf class.
Then there are the associated mypkg_phase_cf.[cc|h] files defining the
class. It all compiles properly using the following:
CXXFLAGS = -I$(GNURADIO) -I$(GNURADIO)/swig -I$(PYTHON)
LDFLAGS = -lgnuradio-core -lcppunit -lm -lrt -lpthread
swig -c++ -python $(CXXFLAGS) -module mypkg -o mypkg.cc mypkg.i
g++ $(CXXFLAGS) -c mypkg.cc -o mypkg.o
g++ $(CXXFLAGS) -c mypkg_phase_cf.cc -o mypkg_phase_cf.o
ar rv _mypkg.la mypkg.o mypkg_phase_cf.o
ld -shared $(LDFLAGS) -o _mypkg.so -lc mypkg.o mypkg_phase_cf.o
The constructor for mypkg_phase_cf is:
mypkg_phase_cf::mypkg_phase_cf ()
: gr_block ( "phase_cf",
gr_make_io_signature (1,1,sizeof(gr_complex)),
gr_make_io_signature (1,1,sizeof(float)) ) {}
In my script I have:
from gnuradio import gr
from gnuradio import mypkg
...
arctan = mypkg.phase_cf ()
fg.connect (baseband, arctan)
fg.connect (arctan, sink)
When I run the script, everything links happily, and I am able to import
the package. However, when I get to "fg.connect (baseband, arctan)", I
get the following error:
File "/usr/local/lib/python2.3/site-packages/gnuradio/gr/basic_flow_graph.py",
line 180, in _check_port
if signature.max_streams () == -1: # infinite
AttributeError: 'str' object has no attribute 'max_streams'
Any ideas?
[ t. charles clancy ]--[ address@hidden ]--[ www.cs.umd.edu/~clancy ]
[ computer science ]-----[ university of maryland | college park ]
- [Discuss-gnuradio] max_streams problem in own module,
Charles Clancy <=