Re: [Discuss-gnuradio] UHD/antennas/device names/etc.

[Josh Blum]

So im missing some context here. If you messing around in GRC, there is 
an antenna parameter in the uhd source block. That antenna parameter is 
a string that can be TX/RX or RX2. When set, it will generate a call in 
the python code that looks like uhd_source_object.set_antenna("RX2")

That addr=192.168.xxxx stuff is just for identifying a device on your 
system. Its goes into the constructor for the block into the args 
parameter. There is no involvement of antennas whatsoever there.

-josh

On 08/26/2010 04:29 PM, address@hidden wrote:
> > -----Original Message-----
> > From: Josh Blum [mailto:address@hidden
> > Sent: Thursday, August 26, 2010 07:03 PM
> > To: address@hidden
> > Subject: Re: [Discuss-gnuradio] UHD/antennas/device names/etc.
> >
> >
> >
> > On 08/26/2010 03:27 PM, address@hidden wrote:
> > > Welcome to the next level...
> > >
> > > I've gotten further. It's now failing with:
> > >
> > >
> > > Oterminate called after throwing an instance of 'uhd::assert_error'
> > >     what():  assertion failed:
> > >      is not a valid rfx rx antenna name.
> > >     possible values are: [TX/RX, RX2].
> >
> > You need to pick from one of the antenna choices. If you leave a blank
> > string it shouldnt try to set any antenna, so im not sure why you see
> > the error at all because it looks like you used a blank/empty string.
> >
> > http://www.ettus.com/uhd_docs/manual/html/dboards.html#daughterboard-properties
> >
> > > I'm running with an RFX2400 (WBX will be my next victim).
> >
> > antennas should be the same as RFX series
> >
> > > I've already discovered that (apparently) you can't do something like make("eth2") (like 
> > > you could with the old driver), you need to give the IP address (however I've also discovered that 
> > > "" also appears to work OK). Do I also need to include some sort of antenna info (i.e., 
> > > whether I'm running half or full duplex)?
> >
> > Its a device address, when left blank it will use whatever device it can
> > find.
> > http://www.ettus.com/uhd_docs/doxygen/html/classuhd_1_1device__addr__t.html
> >
> > The dboard properties link above should clue you into the full or half
> > duplex stuff.
> >
> > > I've looked through the various headers and doxygen but haven't been able to 
> > > figure out what I need to do to keep going.
> >
> > What are you trying to do?
> >
> > -Josh
>
> I'm (just) trying to open a connection to a U2 + RFX2400 (full duplex).
>
> What I'm not getting (perhaps I'm just being dense) is how to express the antenna property in the string 
> (i.e., apparently is can be "TX/RX" or "RX2", but does it take a prefix like the address 
> does (i.e., "addr=")? If it does, what is it?).
>
> Again, sorry if I've overlooked something. I can tell I'm in the right 
> ballpark, but I'm just not seeing it.
>
>    Thanks again,
>
>    --Bob