Re: [Discuss-gnuradio] Understanding the interfence environment

[Marcus Leech]

Carlo E. Prelz wrote:
> The actual code for setting frequency and gain (for daughterboard
> dbs_rx) is found (in python!) in file
>
> <source code of gnuradio>/gr-usrp/src/db_dbs_rx.py
>
> (methods set_freq and set_gain). The procedure is quite abstruse and I
> found no text document that would explain in a less terse format what
> was done and why. I re-coded the process in C for a library to be
> called from Ruby, but I have no certainty that the logic is
> correct. If you want I can send you the code, but it has possibly less
> documentation that the original python code (which is, I admit, quite
> an achievement), and since I could not understand exactly what the
> procedure was performing, I have no way to ascertain that my code is
> correct.
>
> Carlo
>
>   
There's also usrp_fft.py in gnuradio-examples/python/usrp, which uses 
the high-level
 interface for setting frequency (xxxxxxx.tune()) and gain 
(xxxxxxx.set_gain()).
 Not particularly abstruse, IMHO.

Also, gr-radio-astronomy/src/python/usrp_ra_receiver.py and 
usrp_psr_receiver.py both
 use the xxxxx.tune() and xxxxx.set_gain()  interface functions.