On 03/08/2018 10:43 AM, Firdavs Pulat wrote:
Hi all,
Are there APIs as part of gnuradio that give access to the low level
ADI registers (to both probe, and set)? For instance, I'm trying to
see if the AGC is currently turned on on B200mini, and if it's, what
kind of mode it is on (e.g., slow or fast). Looking at it the USRP
manual online, I see functions like set_agc, set_agc_mode, etc. I just
don't have any idea how/where to actually use/set these. Could anyone
please help me out?
Thanks!
No need to tinker with ADI registers.
The multi_usrp API provides access to a set_rx_agc function:
https://files.ettus.com/manual/classuhd_1_1usrp_1_1multi__usrp.html#abdab1f6c3775a9071b15c9805f866486
However, you'd have to extend the Gnu Radio multi_usrp "wrapper" (in
gr-uhd in the main Gnu Radio codebase) to provide access to set_rx_agc().
Note that in many cases, hardware AGC doesn't really work the way you'd
like it to, since its "world view" may be very very different than the view
of your particular application.
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