Hello, I have created a block in c++ which needs to retune after a certain number of samples have passed through. To accomplish this I am passing a uhd_usrp_sink block to my block from python and then I am attempting to retune after a certain number of samples. The block compiles correctly and it runs fine unless I have the retune code in the block. If I attempt to retune from c++ I get this message on trying to import the module:
Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/gr_my/__init__.py", line 40, in <module> from gr_my_swig import *
File "/usr/local/lib/python2.7/dist-packages/gr_my/gr_my_swig.py", line 24, in <module> _gr_my_swig = swig_import_helper() File "/usr/local/lib/python2.7/dist-packages/gr_my/gr_my_swig.py", line 20, in swig_import_helper
_mod = imp.load_module('_gr_my_swig', fp, pathname, description) ImportError: /usr/local/lib64/libgnuradio-gr_my-3.3.0.so.0: undefined symbol: _ZN3uhd14tune_request_tC1Ed
This does not happen if I do not include the line:
sink->set_center_freq((double) ooinfo2[trannumber + 3]);
I am sending my c++ block the usrp sink block through the constructor: gr_my_amplifier_ff::gr_my_amplifier_ff (std::vector<gr_complex> pre, std::vector<float> ooinfo, float sps,boost::shared_ptr<uhd_usrp_sink> sink)
I have tried the fix listed in the FAQ and I have tried including all of the following headers in the .i file: #include <gr_uhd_usrp_sink.h> #include <gr_uhd_api.h> #include "uhd/types/time_spec.hpp"
#include <uhd/types/time_spec.hpp> #include "boost/thread/thread.hpp" #include <boost/make_shared.hpp> #include <uhd/convert.hpp>
also i have tried including: %include "uhd_swig.i"
The block compiles and runs fine if I don't try to access this boost pointer so I don't understand why it is not working.