Michael Dickens | 17 Sep 05:08 2014

gr-mac in MacPorts

After hearing from a few OSX users this afternoon at GRCon14 that they were having issues getting gr-mac to
build or function, I decided to get it into MacPorts.  Thus, after a little work and a couple patches, it is
now in and seemingly functional as of r125409 <  https://trac.macports.org/changeset/125409 > and will
be live as of about 11:30 PM/US/Eastern.  To get this module, you'll want to do:
{{{
sudo port selfupdate
}}}
and then you can install it via:
{{{
sudo port install gr-mac
}}}
Please follow the install instructions provided at the end of the install:
{{{
    +-------------------------
    | Before gr-mac will work correctly, you will need to execute
    |
    |   /opt/local/bin/grcc /opt/local/share/examples/mac/gmsk_radio.grc
    |
    | and
    |
    |   /opt/local/bin/grcc /opt/local/share/examples/mac/ofdm_radio.grc
    |
    | as the user for which you want to use gr-mac.
    +-------------------------
}}}

Have fun! - MLD
Marc Newlin | 17 Sep 00:23 2014
Picon

For Sale: 2x USRP N210 rev 4 w/ SBX daugherboards

I am selling my two USRP N210's (rev 4) with SBX daughterboards so I can migrate to B210's. 

Both N210's are in excellent condition, and include SBX daughterboards and power supplies. 

I am selling the pair for $2800, which includes insured shipping within the US (or local pickup in the Seattle area). 

Please contact me off list if you are interested. 

Marc
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Nicholas Hu | 16 Sep 22:57 2014
Picon

Questions regarding USRP N200 streaming

Hi,
I am working on a USRP project. I am using a USRP N200 with a BasicRX daughter board to perform data streaming. I am using GRC 3.6.4.1 on a Ubuntu 12.04 machine. The USRP N200 is set to have a decimation factor of 8 to achieve a streaming rate of 12.5 MSPS, the daughter board is set to A:A to perform single channel real sampling. The I Q data wire format is set to be 16 integer each, and the host data format is set to be complex float 32. The settings above are also in the attachments. For analyzing data, I am using Matlab R2013b on Windows 7. My question is: when I am streaming data for about 10 seconds, I am getting a file around 500,000,000 bytes which is reasonable ((16 bits/sample I+16 bits/sample Q)*(10 seconds)*12.5 MSPS*(1/8 bytes/bits)=500 Mbytes), but when I use read_complex_binary.m provided by GNUradio to read the file in Matlab, I am only getting half of the expected samples (~62,500,000 samples) instead of 125,000,000 samples. Could anyone please explain why this is happening? Doesn't 16 bits I and 16 bits Q wire format give me 32 bits per sample? Any help would be appreciated.
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Nicholas Hu | 16 Sep 22:48 2014
Picon

(no subject)

Hi,
I am working on a USRP project. I am using a USRP N200 with a BasicRX daughter board to perform data streaming. I am using GRC 3.6.4.1 on a Ubuntu 12.04 machine. The USRP N200 is set to have a decimation factor of 8 to achieve a streaming rate of 12.5 MSPS, the daughter board is set to A:A to perform single channel real sampling. The I Q data wire format is set to be 16 integer each, and the host data format is set to be complex float 32. The settings above are also in the attachments. For analyzing data, I am using Matlab R2013b on Windows 7. My question is: when I am streaming data for about 10 seconds, I am getting a file around 500,000,000 bytes which is reasonable ((16 bits/sample I+16 bits/sample Q)*(10 seconds)*12.5 MSPS*(1/8 bytes/bits)=500 Mbytes), but when I use read_complex_binary.m provided by GNUradio to read the file in Matlab, I am only getting half of the expected samples (~62,500,000 samples) instead of 125,000,000 samples. Could anyone please explain why this is happening? Doesn't 16 bits I and 16 bits Q wire format give me 32 bits per sample? Any help would be appreciated.
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
PEEL Luke | 16 Sep 12:38 2014

Python OOT Block on Windows

Hi,

 

Is it possible to create an OOT module written in Python to run on windows without having to compile anything? I am hoping that I can drop a Python file and a GRC file somewhere and have them just run, seeing as Python does not need to compile anything.

 

I have GNU Radio installed with the Ettus binaries, so I am not using MinGW to compile from source and can’t compile new blocks using MinGW.

 

Thanks,

Luke

_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
mark.w.christiansen | 15 Sep 21:40 2014

exposing packet informatoin

I wrote a VITA-49 deserializer block. How can I expose information like the sample rate extracted from the header to the other blocks in the system?
 
/\/\ark.
--
Aim for brevity while avoiding jargon.
~ Edsger Dijkstra
 
 
 
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
sarankumar | 15 Sep 07:27 2014
Picon

phase synchronizing USRPs in GNU Radio

Hi all,

I am trying to phase synchronize multiple usrp's using 10 MHz reference and 1 pps. I was able to get them synchronised but with constant phase offset between. But every time I retune or rerun the flowgraph the phase offset changes. how can I estimate and compensate the phase offset between USRPs without rerunning or retuning USRP? The purpose is to do DOA estimation. I use WBX daughterboard and USRP N210.

Regards,
Saran
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
amit naik | 14 Sep 13:57 2014
Picon

Regarding Transceiver design on GNUradio

Dear all, 
I  am working on re-configurable  Software defined radio based  multiband transceiver (initially for ISM band 2.4 GHz).for that i am using GNU Radio for software design .For hardware design i come to know that Development Boards (i)USRP Motherboard (ii)RFX2400 or SBX40 or CBX40 are  required .
my quires are 
(1) Is GNU radio software is sufficient for full transceiver design ?
 (2) What other components are required in the hardware circuits?
(3) What is the cost of USRP motherboard, RFX2400,SBX40 and CBX40 ?

Thanks in advance 
amit
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Dominique Guelord Ingala | 13 Sep 17:25 2014
Picon

GRC running for 45 minutes only

Hi,
Now my GRC runs for 45-60 minutes only, after that the flowgraph is killed on its own.
No error message provided.
Anyone can assist?

Thanks
Dominique
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
John Malsbury | 13 Sep 03:00 2014
Picon

Hier Block - Message and Stream Ports - Port of Of Range

I have a hier block with a couple of message i/o and complex stream i/o.  After including the hier block in a top_block and running, it threw out an error about input ports being out of range.  It turned out that it had assigned a port index to a message input, so the stream input had been displaced to higher indices that didn't actually exist in the io_sig.

As a work around - I deleted all of the pad sinks/source in the GRC file, added the stream sinks/sources, and then messages, to assure that the hier block generator assigned stream ports to the lower indices.  [ I was a little surprised this worked actually].

I can try to track down the cause, but I thought I'd mention it here if someone knew exactly where to look.

Or maybe I'm just doing something silly?

-John
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Carlos Alberto Ruiz Naranjo | 12 Sep 21:57 2014
Picon

A little bug in GNURadio 3.7.5 API page

_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio <at> gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Gmane