On Tue, 2009-01-20 at 15:33 -0500, Catalin Lacatus wrote: > Hello, > > I am working with usrp_spectrum_sense.py and I am trying to analyze the > intermediate data from different DSP blocks. > > After I passed the input stream to a vector I tried to save this information > on a file like this: > > > > /s2v = gr.stream_to_vector(gr.sizeof_gr_complex, self.fft_size) > > output2=gr.file_sink(gr.sizeof_gr_complex,"file2.txt") > > self.connect(self.u, s2v, output2)/ > You should have written output2=gr.file_sink(gr.sizeof_gr_complex*self.fft_size,"file2.txt") You are now getting vectors of 128 complex values as one item.
Success, Martin > > > > > and I received the following error: > > > > /node1-2:~/gnuradio/gnuradio-examples/python/usrp# ./usrp_spectrum_sense.py > -F 16 4.5M 7.5M > > Using RX d'board A: Basic Rx > > Traceback (most recent call last): > > File "./usrp_spectrum_sense.py", line 305, in <module> > > tb = my_top_block() > > File "./usrp_spectrum_sense.py", line 179, in __init__ > > self.connect(self.u, s2v, output2) > > File "/usr/local/lib/python2.5/site-packages/gnuradio/gr/top_block.py", > line 70, in connect > > self._connect(points[i-1], points[i]) > > File "/usr/local/lib/python2.5/site-packages/gnuradio/gr/top_block.py", > line 76, in _connect > > dst_block.basic_block(), dst_port) > > File > "/usr/local/lib/python2.5/site-packages/gnuradio/gr/gnuradio_swig_py_runtime.py", > line 1469, in connect > > return _gnuradio_swig_py_runtime.gr_top_block_sptr_connect(*args) > > ValueError: itemsize mismatch: stream_to_vector(4):0 using 128, > file_sink(5):0 using 8/ > > / / > > > > It seems to be a format mismatch. > Please any advice how to write the output of s2v to a file. > > > > Thank you, > Catalin > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
