On 11/02/12 05:50 AM, Marius wrote:
>
> I hope it doesn't add any latency to the equation like: RPC command +
> UHD command + FPGA reaction + RF frontend. I'm not even sure if using
> the C++ API would be any different. So my Monday morning experiment
> now is set ;)
>
> Best,
> Marius
>
>
>
Wel
Hi!
On 10 February 2012 18:12, Marcus D. Leech wrote:
> Ive used XMLRPC for the same thing and you don't have to worry about
> unpacking integers into floating point etc
Ah, the XMLRPC block automatically adds callback functions for the
variables. That's a great startpoint. Thanks a lot. Now I
Ive used XMLRPC for the same thing and you don't have to worry about unpacking
integers into floating point etc
--
Principal Investigator
Shirleys Bay Radio
Astronomy Consortium
http://www.sbrac.org
On Feb 10, 2012, at 10:49 AM, Ed Criscuolo wrote:
> On 2/10/12 4:14 AM, Marius Ciepluch wrote:
On 2/10/12 4:14 AM, Marius Ciepluch wrote:
So if someone knows how I can implement a callback or a polling function
to make the device tune for real, but as fast as possible, that'd be
very helpful.
In the past, I've done external tuning via GRC with the following:
Create a variable block (i
http://gnuradio.org/doc/doxygen/classuhd__usrp__sink.html#a279a28c250e2ae657aa9c43b5742c2fa
Is the current API, i'm not sure how it gets to python world, but it looks
like you can still call it with just the frequency.
Also it there any reason your doing this with GRC and not python?
On Fri, Fe
Hi Andrew,
thanks for the reply. I need the RF Frontend to change. I'm doing
measurements in order to find out how fast the RF Frontend can tune over
more than 25 MHz (on a USRP2). I need some exact data here, e.g. plots.
So in fact I want it to tune with no workarounds. And I want to see it
tune
self.uhd_usrp_sink_0.set_center_freq(self.freq, 0) will take forever, the
whole front end has to re-settle. How far are you moving the center
frequency? If it's less than 50MHz you could change the sin signal
frequency. You could even hook up a Frequency modulator and change the
frequency continual
Hi!
I have put a Flow-Graph together, which is quite simple:
Sine Signal -> USRP2 UHD
Now I want to change the center-frequency as fast as possible.
My initial idea was a while True loop and to issue the
self.uhd_usrp_sink_0.set_center_freq(self.freq, 0) command from Python.
This does not work.
