Re: [Discuss-gnuradio] B200/mini GPIO

[Martin Braun]

get_device() returns a shared pointer. Note this function is not exposed
in Python -- you need to pass the object into another C++ object, and
there call get_device().

M

On 06/08/2016 06:38 AM, Santos Campos wrote:
> Hi, Martin!
> I tried taking a peek at how the usrp sink might handle a preceding usrp
> source (for inspiration). 
> Does it (and the way you described) declare a usrp device and do some
> kind of shallow copy with the get_device() method?
> 
> On Mon, Jun 6, 2016 at 5:54 PM, Martin Braun <address@hidden
> <mailto:address@hidden>> wrote:
> 
>     Nah, you can just pass in the existing one into your module and grab a
>     reference to the multi_usrp from there.
> 
>     M
> 
>     On 06/03/2016 12:57 PM, Santos Campos wrote:
>     > Hello again again!
>     > So I'm trying to write an OOT module to control the gpio from GRC.
>     > Would I have to create a usrp device in the module's code if I am using
>     > a usrp source?
>     > My gut says to probably not re-declare it since it's already in use, but
>     > I'm not sure how I could bring it into scope if I don't have to
>     > re-declare it.
>     > I tried poking around for the usrp sink code to see what it did but
>     > couldn't find it.
>     >
>     > On Wed, Jun 1, 2016 at 11:45 AM, Santos Campos <address@hidden 
> <mailto:address@hidden>
>     > <mailto:address@hidden <mailto:address@hidden>>> wrote:
>     >
>     >     Worked like a charm! Thanks for the helpful comments!
>     >     Like I said originally, I'm trying to use the gpio to remotely
>     >     switch between 2 antennas.
>     >     Currently trying to familiarize myself with boost and the uhd api.
>     >     Will undoubtedly be back to the listserv with questions on those.
>     >
>     >
>     >     On Wed, Jun 1, 2016 at 11:23 AM, Marcus D. Leech <address@hidden 
> <mailto:address@hidden>
>     >     <mailto:address@hidden <mailto:address@hidden>>> wrote:
>     >
>     >         On 06/01/2016 10:23 AM, Santos Campos wrote:
>     >>         Hello again, all! I've finally come back to this after a while.
>     >>         I'm trying to get the example code to compile but having some
>     >>         trouble. Does anyone have any experience with using the uhd
>     >>         gpio api?
>     >>         I tried using this to compile:
>     >>
>     >>             $ gcc -I/usr/include/boost
>     >>         -I/home/santosec/uhd/host/include/uhd gpio.cpp -o gpio
>     >>
>     >>         but I got a whole mess of compiler errors.
>     >>
>     >>
>     >         And, to follow-up with details:
>     >
>     >         http://files.ettus.com/manual/page_build_guide.html
>     >
>     >         Also:
>     >
>     >         AN-445 and AN-204 from here:
>     >
>     >         https://kb.ettus.com/Application_Notes
>     >
>     >
>     >>         On Wed, May 4, 2016 at 11:25 AM, Marcus D. Leech
>     >>         <address@hidden <mailto:address@hidden>
>     <mailto:address@hidden <mailto:address@hidden>>> wrote:
>     >>
>     >>             On 05/04/2016 11:18 AM, Santos Campos wrote:
>     >>>             Hello! I am curious if it is possible to use a pin or
>     >>>             something on either the B200 or B200 mini to send a
>     >>>             control signal.
>     >>>
>     >>>             We were hoping to be able to switch between 2 antennas if
>     >>>             the board received some signal. It looks like there could
>     >>>             be some available pins, but we were unsure if they would
>     >>>             be able to fulfill our purpose. If not, any ideas around
>     >>>             this issue would be welcome!
>     >>>
>     >>>             Any help would be much appreciated!
>     >>>
>     >>>
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>     <mailto:address@hidden>>
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>     >>             The API for the B2xx GPIO is the same as for X3xx.
>     >>
>     >>             There's example code:
>     >>
>     >>             .../uhd/examples/gpio.cpp
>     >>
>     >>
>     >>
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>     >>
>     >>
>     >
>     >
>     >
>     >
>     >
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