-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Bahn William L Civ USAFA/DFCS wrote: > Thanks, that helps some. > > I figured that I could put in the literal size of the data, in bytes, but > that only helps if it actually matches how the GR blocks are going to process > those bytes. > > When possible, I would prefer to use the constants that have been set up so > that the code is (1) more readable, and (2) more maintainable. So instead of > using "8" for complex, I would like to use gr.sizeof_"whatever". But I don't > know what "whatever" needs to be. Where do I find this? > > I'll look at dbpsk.py and tunnel.py when I get my Linux box set back up. Is > there a module that takes time domain data and converts it to IQ pairs, or am > I responsible for doing that when I generate the file? If so, what LO > frequency would I need to use? > > It would be so much simpler if I could just use the generated time domain > data directly. > > Thanks!
From /usr/local/lib/python2.5/site-packages/gnuradio/gr/gnuradio_swig_py_runtime.py: sizeof_char = _gnuradio_swig_py_runtime.sizeof_char sizeof_short = _gnuradio_swig_py_runtime.sizeof_short sizeof_int = _gnuradio_swig_py_runtime.sizeof_int sizeof_float = _gnuradio_swig_py_runtime.sizeof_float sizeof_double = _gnuradio_swig_py_runtime.sizeof_double sizeof_gr_complex = _gnuradio_swig_py_runtime.sizeof_gr_complex Those are the constants you want. When you say generated time domain data, are you talking about (time, voltage) pairs off of a scope? IIRC scope data is just the I component, and you can get the Q component from I using standard signal processing techniques assuming your sampling rate is sufficiently high. - -Dan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGw4oAy9GYuuMoUJ4RAl6xAJ44btFqFjVOvdVvACG0e/0XUQEN7QCeMFBD ftSTrvnSYrU2sPjn6hC7PeM= =dMQB -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
