On 06/14/2016 09:39 PM, Richard Bell wrote:
I think I have a misunderstanding about the DSP tune, because it's not
behaving the way I expect it to. Let me describe my experiment.
Suppose I want to hop between two frequencies, 900e6 and 901e6, using
a sample rate of 500e3 and a usrp as a sink (t
I think I have a misunderstanding about the DSP tune, because it's not
behaving the way I expect it to. Let me describe my experiment. Suppose I
want to hop between two frequencies, 900e6 and 901e6, using a sample rate
of 500e3 and a usrp as a sink (transmitter).
1) If I use set_center_freq(900e6)
I am noticing that calling `CPPUNIT_ASSERT_MESSAGE("moo", 1 == 2)` in C++
unit tests does cause the test to fail, but does not print the message. Is
there something I need to do in order to get the output I expect? Not
having any output from the messages makes figuring out what happened a pain
in
It would seem that the ID entered into options block of gnuradio companion
is used as the class name of the generated python script. (defaults to
top_block)
But there is one source of trouble with that.
What if I put into ID field some name which could be same as some imported
module.
This could h
This is non sense seriously. This is my flowgraph :
https://www.dropbox.com/s/4cfptq5419kvyhz/file_source.png?dl=0
When I send only zeros '0', this is what I get :
https://www.dropbox.com/s/aipf6wsj5ekwxnb/zeros.png?dl=0
When I send only ones '1' this is what I get :
https://www.dropbox.com/s/g38
On 06/14/2016 02:37 PM, Santos Campos wrote:
Hello, all!
This may be more of a board specific problem, so apologies if this is
the wrong place to ask.
I'm sending a tone from one b200 usrp to a receiving one. I was trying
to recover the frequency of the original tone and was able to do so
wh
Martin and Derek,
Thank you. That is much more clear to me now.
Rich
On Tue, Jun 14, 2016 at 1:19 PM, Martin Braun
wrote:
> On 06/13/2016 04:47 PM, Richard Bell wrote:
> > I can call the C++ functions from Python? Why is there a separate python
> > API, I'm confused.
>
> It's the same API, SWI
On 06/14/2016 03:13 PM, Richard Bell wrote:
Martin,
If I create a USRP object
self.usrp = uhd.usrp_sink(device_addr=options.args,
stream_args=uhd.stream_args('fc32'))
and initialize the USRP center frequency to 900e6
self.usrp.set_center_freq(900e6)
and then do
tr = uhd.tune_request(901e6
On 06/13/2016 04:47 PM, Richard Bell wrote:
> I can call the C++ functions from Python? Why is there a separate python
> API, I'm confused.
It's the same API, SWIG exposes that to Python.
> Lets say I set an initial center frequency of 900 MHz to start the
> script off. You're saying that if the
Hello Richard,
The Python "API" is a minimal wrapper of the C++ API. You can call nearly
every function of the multi_usrp class on a USRP sink or source object in
Python. The function names are altered slightly because it makes no sense
to call, for instance, set_rx_freq, on a USRP sink.
Here is
On 06/14/2016 02:37 PM, Santos Campos wrote:
Hello, all!
This may be more of a board specific problem, so apologies if this is
the wrong place to ask.
I'm sending a tone from one b200 usrp to a receiving one. I was trying
to recover the frequency of the original tone and was able to do so
wh
On 06/14/2016 12:13 PM, Richard Bell wrote:
> Martin,
>
> If I create a USRP object
>
> self.usrp = uhd.usrp_sink(device_addr=options.args,
> stream_args=uhd.stream_args('fc32'))
>
> and initialize the USRP center frequency to 900e6
>
> self.usrp.set_center_freq(900e6)
>
> and then do
>
> tr
Hi there,
I've been playing around with message passing and stream tags as a beginner and
am trying to allow the centre frequency of my USRP be changed via message
passing command based on some basic if statements.
I made a conceptual system where when my custom sink block receives a
propagat
Hey Chuck,
I have one of these rev 1 tvrx daughter boards too. Thanks for the effort!
Will you please post your code?
I tried the same trick at first, changed the dboard ID: no joy so changed
it back.
Found the code and data sheet same as you and then struggled to set up a
working build enviro
Martin,
If I create a USRP object
self.usrp = uhd.usrp_sink(device_addr=options.args,
stream_args=uhd.stream_args('fc32'))
and initialize the USRP center frequency to 900e6
self.usrp.set_center_freq(900e6)
and then do
tr = uhd.tune_request(901e6, 1e3)
followed by
uhd.usrp_sink.get_center_fr
Hello, all!
This may be more of a board specific problem, so apologies if this is the
wrong place to ask.
I'm sending a tone from one b200 usrp to a receiving one. I was trying to
recover the frequency of the original tone and was able to do so while only
receiving.
However, when I tried to add a
Hi Ravi -
Thanks for the update! I really appreciate you going through the effort of
posting a screencast, as well.
A few questions:
1. Where is the repository that you are pushing your code to?
2. I think it would be useful if the UI indicated which packages were
already installed. You
Hi
I have a problem. On my first setup, I use 2 file source. The 1st file
contains only '1' and the other only '0'. The 2 file sources go through a
selector and end up in a CPFSK mod block. When I run this, switching from
'1' to '0' makes the frequency drift from + to - FSK_deviation like it
shou
I'd like to use BER Curve Gen and QT BER Sink to simulate some FEC schemes
that have different code rates. I'm wondering about the right way to do
this so that the plots are w.r.t. EBN0 as opposed to ESN0.
For example, in gr-fec/examples/ber_curve_gen.grc, plots are w.r.t ESN0. In
order to make th
Cinaed Simson:
> Hi - incidentally, if you use
>
>cmake -Wno-dev
>
> it will turn off the verbose warnings.
>
> Also, I just realize you installed gnuradio from source, so if you
>
> export PKG_CONFIG_PATH="${PREFIX}/lib/pkgconfig
> cmake -Wno-dev
>
> it should work.
>
> I haven't tes
20 matches
Mail list logo
