On 02/16/2011 02:50 AM, Sivaramakrishnan B C wrote:
> Hi All,
>
> I was wondering if there is any buffering happening on the host and/or on
> the USRP (USRP1 and N210) when the UHD send() and recv() methods are called?
>
Yes of course. There are buffers in the host and device (fifos).
-josh
Hi All,
I was wondering if there is any buffering happening on the host and/or on
the USRP (USRP1 and N210) when the UHD send() and recv() methods are called?
Thanks,
Shiva
On Thu, Feb 3, 2011 at 10:40 AM, Josh Blum wrote:
>
> > 1. What is the parameter --spb, samples per buffer. And generall
On 02/03/2011 09:44 PM, Shiva ? wrote:
> Hi All,
>
> I'm using 2 USRP1s to send and receive a simple sine wave using UHD.
> The TX/RX frequencies are 2.45 GHz as I have RFX 2400 as daughterboards.
>
> I use the UHD example tx_waveforms to transmit a sine wave of 10 kHz,
> sample rate 250ksps. I rec
Hi All,
I'm using 2 USRP1s to send and receive a simple sine wave using UHD. The
TX/RX frequencies are 2.45 GHz as I have RFX 2400 as daughterboards.
I use the UHD example tx_waveforms to transmit a sine wave of 10 kHz, sample
rate 250ksps. I received the waveform at the other end using the UHD e
Hi Josh,
Thanks for the reply.
Also, I want to know if this is correct: While we are working with signals
on the host PC, we're using complex float 64 bit data. This means we have 32
bit I data and 32 bit Q data. But when the USRP code (UHD or Gnuradio USRP
code) on the host PC sends this data
> Also, I want to know if this is correct: While we are working with signals
> on the host PC, we're using complex float 64 bit data. This means we have 32
> bit I data and 32 bit Q data. But when the USRP code (UHD or Gnuradio USRP
> code) on the host PC sends this data to the USRP, it converts
> 1. What is the parameter --spb, samples per buffer. And generally, what is
> this buffer?
This is the buffer that the application fills with samples, and passes
into the call device->send()
> 2. What is the relationship between spb (sample per buffer), duration
> (number of seconds to transmit
Hello All,
I have a USRP1. I'm trying to run the tx_waveforms UHD example.
While using tx_waveforms, we have some parameters we nwwd to provide at the
command line.
1. What is the parameter --spb, samples per buffer. And generally, what is
this buffer?
2. What is the relationship between spb (s
Your possible rates are 100e6 divided by the following numbers
representing interpolation and decimation: _USRP2_RATES = range(4,
128+1, 1) + range(130, 256+1, 2) + range(260, 512+1, 4)
I think the general theme of your issues are that the call to recv() is
always timing out. I would like to k
Hi Josh, Yes, I forgot about that, it's just that the default sample rate in GRC was set to 32k, and I overlooked that. I've pulled in and compiled the latest SRCREVs from both the gnuradio and ettus uhd repositories, on Fedora 12.I've set it to 100 Msps, and connected it to a Nul
Hi Josh, Yes, I forgot about that, it's just that the default sample rate in GRC was set to 32k, and I overlooked that. I've pulled in and compiled the latest SRCREVs from both the gnuradio and ettus uhd repositories, on Fedora 12.I've set it to 100 Msps, and connected it to a Nul
On 07/21/2010 10:36 PM, Elvis Dowson wrote:
Hi Philip and Per,
On Jul 19, 2010, at 5:57 PM, Philip Balister wrote:
http://ettus-apps.sourcerepo.com/redmine/ettus/projects/uhd/repository/revisions/master/show/host/examples
The C++ examples in that folder wasn't helpful, since
a. it isn't
Hi Philip and Per,On Jul 19, 2010, at 5:57 PM, Philip Balister wrote:http://ettus-apps.sourcerepo.com/redmine/ettus/projects/uhd/repository/revisions/master/show/host/examplesThe C++ examples in that folder wasn't helpful, since a. it isn't readily apparent how to take that information and use it t
On 07/19/2010 07:25 AM, Elvis Dowson wrote:
Hi Josh,
I hope you're doing fine! I was wondering if you have an UHD
example that you can share with me?
I couldn't find any such example on the net, and I just need a simple starting
point, to bring data from the USRP2 using UHD.
Hi Josh,
I hope you're doing fine! I was wondering if you have an UHD
example that you can share with me?
I couldn't find any such example on the net, and I just need a simple starting
point, to bring data from the USRP2 using UHD.
best regards,
Elvis Dowson
___
Hi Josh,
I keep getting this error;
gr_block_executor: source produced no output.
We're marking it DONE.
What does this mean?
Best regards,
Elvis Dowson
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu
Hi Josh,
On Jul 16, 2010, at 9:09 PM, Josh Blum wrote:
> This is a bug in the wbx reference divider code. It will be fixed soon. What
> frequency were you requesting?
I was entering 1e6 (100 Hz), which was an incorrect value I guess, since
the WBX cannot receive 1 MHz, which resulted in th
This is a bug in the wbx reference divider code. It will be fixed soon.
What frequency were you requesting?
-Josh
RFdiv 32
terminate called after throwing an instance of 'std::invalid_argument'
what(): key not found in dict
Aborted
On 07/16/2010 08:16 AM, Elvis Dowson wrote:
Hi,
Hi,
I used a UHD Simple Source and connected it to a Null Sink, using grc,
and got the following error:
Generating: "/home/elvis/Desktop/grc-examples/top_block.py"
Executing: "/home/elvis/Desktop/grc-examples/top_block.py"
Current recv sock buff size: 5000 bytes
Current send sock bu
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