Hello
I find the data-types for python OOTs very confusing:
Apparently there are the following data-types:
float = float64
float32 used by most standard-blocks
float64
complex = complex128
complex64 used by most standard-blocks
complex128
This not really clear from the doc/tutorials.
In particu
o.k,
I find compiling gnuradio and uhd from source not that easy: I keep getting
compiler-error-messages
and messages about missing dependencies in the process.
I will try to upgrage my Ubuntu.
In the meantime I ran across and OOT-module named vave, which does what I want.
I tried to modify
it
I am making my first steps with gnuradio.
I am calculating the cross-spectrum of the two-channels of my
soundcard.
Now I want to reduce the noise in the spectrum by averaging. To this
end I need a moving average of vectors (=average on a per index basis).
Reading the doc of v3.7.13-4 moving_averag
Hi
I want to perform a frequency sweep with grc by sweeping the
center-frequency argument of the usrp-block and generate and display a
single complex-number for each value (this is for a vector-network
analyzer).
What I have come up with so far, is a block that processes a fixed
number of samples
ecial FPGA code?
Wolfgang
>Those are two DDC channels, derived from the same physical, analog, hardware
>and ADC.
>
>
>The LFRX itself has no gain-setting device, but the ADC does, so when you set
>the gain on the ADC, you're setting the gain for both DDC-derived channels.
Hi,
I am having problems with the gain-settings on the RX-channels of usrp1
My USRP1 is populated with 2 LFRX and 2 LFTX.
I want to use 2 DDC-channels each connect to one 2 ADC of LF-RX-Board A.
I have generated the following code with grc.
When apply a signal of roughly 11MHz I see the mixed si
Hello
I am using a usrp1 populated with 2 LFRX and 2 LFTX daughter boards.
I want to use the 2 ADC of LFRX-A to sample s different signals.
To do this I use set_subdev_spec("A:A B:A",0).
In order to avoid a segmentation fault I apparently have to create the rx with
num_channels=2.
But now I g
Hm,
with this
self.u_rx.set_subdev_spec("A:A A:B",0)
I get a segfault:
#!/usr/bin/python
This implies that the Q-inputs of the DDCs must be
connected to 0.
I guess the subdev spec would be:
"A:A A:B" ?
What would be the setting to use all 4 input?
Thanks
Wolfgang
On 05/26/2013 05:00 AM, Wolfgang Buesser wrote:
> Hello,
>
> I using a usrp1 populated with 2 LF-RX
Hello,
I using a usrp1 populated with 2 LF-RX and 2 LF-TX.
I want to use 2 DDCs the I-inputs of which are connected to the 2 ADCs on LF_RX
A (Q-inputs to gnd).
In pre-uhd times I used to use set_mux, but now the API seems to have changed.
The following code produces the error message:
Attribute
On Sa, 2013-05-25 at 10:56 -0400, Marcus D. Leech wrote:
> On 05/25/2013 10:45 AM, Wolfgang Buesser wrote:
> > On Sa, 2013-05-25 at 10:15 -0400, Marcus D. Leech wrote:
> >> On 05/25/2013 03:28 AM, Wolfgang Buesser wrote:
> >>> Hi
> >>>
> >>>
Hi
I am having problems selecting the subdev with USRP1:
My USRP1 is populated with 2 LFRX and 2 LFTX.
I am trying the following code:
--
#!/usr/bin/python
3.4-6.1.1 using Yast.
Any hints on what might be wrong or how I can check which lib is 32-Bit?
Thanks
Wolfgang
--
Wolfgang Buesser
Am Ziegelberg 1a
55595 Mandel
+49 174/585 2995
wolfgang.bues...@web.de
___
Discuss-gnuradio mailing list
Discus
Hi I am using a usrp1 populated with 2LF-RX and 2LF-TX daughterboards.
I am trying to learn how to use this hardware with the 'new'
uhd-interface.
I am trying tx_waveforms. Using --subdev A:A or B:A I can select the two
daughterbords. But how can I select a single output on either of the 2
boards
looks of it. To
> fix this, rebuild GR-UHD against your current UHD.
>
> cd (GNU Radio build directory)/gr-uhd
> make clean
>
> sudo make install
>
>
>
> On Thu, May 2, 2013 at 1:01 PM, Wolfgang Buesser
> wrote:
> Hi Erik,
>
>
Suse 12.3 would be great. Or maybe what
> > libraries cmake is looking for.
> >
> > python is installed of course.
> >
> > Thanks
> >
> > wolfgang
> >
> >
> >
> >
> >
> > ___
I am trying to install gnuradio on a new computer running suse 12.3 to
use it with my usrp.
upon cmake I keep getting the message:
"Could Not find PythonLibs".
Any hint what rpm or sources I need to install on Suse 12.3 would be
great. Or maybe what libraries cmake is looking for.
python is inst
ork
> well for anything, except really short separation distances).
>
> What is your ultimate application?
>
> Cheers,
> -Jonathan
>
> On Sun, Jun 22, 2008 at 3:58 AM, wolfgang buesser
> <[EMAIL PROTECTED]> wrote:
>>
>> Just to make sure:
>>
mically as temperature and
> voltage change during system operation.
>
> Cheers,
> -Jonathan
>
> On Sun, Jun 22, 2008 at 2:42 AM, wolfgang buesser
> <[EMAIL PROTECTED]> wrote:
>>
>> Hi,
>>
>> Iam using
>> gr.sig_source_s (self.usb_freq (),
Hi,
Iam using
gr.sig_source_s (self.usb_freq (), gr.GR_CONST_WAVE, 0, 0, 0)
to generate a carrier and
usrp.source_c(nchan=2,decim_rate=self.interp) to resample it at the same
frequency.
I get what I expect: 2 complex numbers which are pretty constant. But with
every restart
of the progra
Eric Blossom wrote:
>
> On Thu, May 22, 2008 at 04:43:23PM +0200, Wolfgang Buesser wrote:
>> Hi,
>>
>> what is the simplest way to caluclate the average of a stream?
>>
>> I generate a stream of fixed length using head(). I would like to
Hi,
what is the simplest way to caluclate the average of a stream?
I generate a stream of fixed length using head(). I would like to
calculate the linear average (i.e.
sum_of_all_samples/number_of_samples).
Thanks
Wolfgang
___
Discuss-gnura
Hi,
I am still quite new to the USRP and GNU-radio, but I managed to write my
first piece of code for the USRP to behave like a network-analyzer. I have 2
questions:
1)I would like to just dump 2X-1000 complex samples into 2 files and then
quit (without keyboard or mouse interaction). But after
x27;t understand why, but for me it fixed the problem.
Regards
Wolfgang
wolfgang buesser wrote:
>
> Hi,
>
> I have just installed gnuradio 3.1.1 on a SuSE-linux 10.3
>
> make performed without errors how
Hi,
I have just installed gnuradio 3.1.1 on a SuSE-linux 10.3
make performed without errors however make check reports:
==
ERROR: test_blks_import (__main__.test_head)
--
Eric Blossom wrote:
>
>
>> self.rx_r_subdev = usrp.selected_subdev(self.rx, (0,0))
>> self.rx_r_subdev = usrp.selected_subdev(self.rx, (1,0))
>
> Looks like a typo here ^ you're setting rx_r_subdev twice
>
>
Correct. This is not as in the code I tested.!
>
> Also, how
I am trying to build a network analyzer using usrp and LF RX/TX- so i need
one TX and two RX-channels. However I only get noise lcose to zero on the
secon channel:
Here is what I am doing in the RX_path (in brief). Maybe somebody can spot
the mistake:
self.rx = usrp.source_c(0,decim_rate
Johnathan Corgan-2 wrote:
>
> Wolfgang Buesser wrote:
>
>> Any suggestions for a straightforward approach would be more than
>> welcome.
>
> The pattern to use (in pseudo code) is:
>
> class receive_path(gr.hier_block2), with no inputs or outputs
> (insta
I want to build a network analyzer using the usrp with LF-RX/TX.
I am new to gnu-radio and usrp and so far only managed to send an
receive based on the examples usrp_rx_cfile.py and usrp_siggen.py.
I think I pretty much understand the code.
It seems I cannot have two derivatives of gr.top_block
29 matches
Mail list logo
