Re: [Discuss-gnuradio] Extending UHD USRP Sink in out-of-tree module

[Sean Nowlan]

I mean to set those controls dynamically based on incoming stream tags, similar 
to the way burst tags work. For instance I designed a tx_gain tag that gets 
read by uhd_usrp_sink and sets the gain using set_command_time. I just wanted 
to know the easiest way to move this modified sink to an OIT of tree module, 
even though I'll be duplicating most of the gr-uhd code to do it.

Josh Blum <address@hidden> wrote:

>
>
>On 04/12/2013 07:00 PM, Sean Nowlan wrote:
>> I want to add some functionality to gr_uhd_usrp_sink to change frontend
>> gain and tune the DDC. I've achieved part of this in the past by
>
>Hooks are already exposed to set individual gain element, or individual
>parts of the tuning chain. The later is even available in GRC. What
>specifically is missing?
>
>> modifying the files directly in gnuradio/gr-uhd, but that's an imprecise
>> way to do it. Would you recommend I:
>> 
>> 1) copy the code from the gnuradio tree to my out-of-tree module, change
>> namespaces, etc. and add my functionality?
>> 2) create my own private uhd_usrp_sink_impl that extends gnuradio's
>> uhd_usrp_sink and add my functionality there?
>> 3) something else?
>> 
>
>If its using stock FPGA images and all, branch off of the gnuradio
>maint, contribute the changes back.
>
>> I remember reading something on this list from somebody who rolled their
>> own usrp wrapper. Any hints?
>> 
>
>That turned out to be an attempt to set gain from the work function
>based off of some older USRP1 app that did the same. In any case, it
>actually wasnt needed.
>
>-josh
>
>> Thanks,
>> 
>> Sean
>> 
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>_______________________________________________
>Discuss-gnuradio mailing list
>address@hidden
>https://lists.gnu.org/mailman/listinfo/discuss-gnuradio