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Today's Topics:
1. running gr-uhd on usrp e100 (Fon, Rithirong Thandee)
2. Re: running gr-uhd on usrp e100 (Josh Blum)
3. How to use UHD with gnuradio (Tuan (Johnny) Ta)
4. Re: How to use UHD with gnuradio (Josh Blum)
5. Max power level of input signal usrp1 (Paola Madonna)
6. Re: Max power level of input signal usrp1 (John Orlando)
7. Help request with instaling (Luca Sfarzo)
----------------------------------------------------------------------
Message: 1
Date: Mon, 4 Apr 2011 13:23:30 -0400
From: "Fon, Rithirong Thandee" <[email protected]>
To: [email protected]
Subject: [USRP-users] running gr-uhd on usrp e100
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Hello,
I'm trying to run a ucla zigbee phy code (
https://www.cgran.org/wiki/UCLAZigBee) with gr-uhd on the usrp e100. But I'm
getting an error
Traceback (most recent call last):
> File "./cc2420_txtest_uhd.py", line 10, in <module>
> from gnuradio import uhd
> File "/usr/lib/python2.6/site-packages/gnuradio/uhd/__init__.py", line
> 27, in <module>
> from uhd_swig import *
> File "/usr/lib/python2.6/site-packages/gnuradio/uhd/uhd_swig.py", line
> 24, in <module>
> _uhd_swig = swig_import_helper()
> File "/usr/lib/python2.6/site-packages/gnuradio/uhd/uhd_swig.py", line
> 20, in swig_import_helper
> _mod = imp.load_module('_uhd_swig', fp, pathname, description)
> ImportError: /usr/lib/libgnuradio-uhd-3.4git.so.0: undefined symbol:
> _ZN3uhd4usrp11single_usrp9ALL_GAINSE
Has anyone worked with gr-uhd on usrp e100? Can someone help? I already
installed gr-uhd and uhd installed.
Thank you so much!
Fon
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Message: 2
Date: Mon, 04 Apr 2011 11:19:21 -0700
From: Josh Blum <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] running gr-uhd on usrp e100
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
> Traceback (most recent call last):
>> File "./cc2420_txtest_uhd.py", line 10, in <module>
>> from gnuradio import uhd
>> File "/usr/lib/python2.6/site-packages/gnuradio/uhd/__init__.py", line
>> 27, in <module>
>> from uhd_swig import *
>> File "/usr/lib/python2.6/site-packages/gnuradio/uhd/uhd_swig.py", line
>> 24, in <module>
>> _uhd_swig = swig_import_helper()
>> File "/usr/lib/python2.6/site-packages/gnuradio/uhd/uhd_swig.py", line
>> 20, in swig_import_helper
>> _mod = imp.load_module('_uhd_swig', fp, pathname, description)
>> ImportError: /usr/lib/libgnuradio-uhd-3.4git.so.0: undefined symbol:
>> _ZN3uhd4usrp11single_usrp9ALL_GAINSE
>
>
> Has anyone worked with gr-uhd on usrp e100? Can someone help? I already
> installed gr-uhd and uhd installed.
>
>
Looks like some kind of incompatibility error; did you update one
software package like uhd and not gnuradio or vice-versa? You might want
to make sure that your uhd and gnuradio installs are both built from the
latest master branches.
-Josh
------------------------------
Message: 3
Date: Mon, 4 Apr 2011 17:12:03 -0400
From: "Tuan (Johnny) Ta" <[email protected]>
To: [email protected]
Subject: [USRP-users] How to use UHD with gnuradio
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Hi list,
I have a question regarding using UHD with gnuradio. So in my top block
python code, I had
from gnuradio import uhd
Then I created a single usrp sink within the __init__ of the top_block class
by
self._u = uhd.single_usrp_sink("", uhd.io_type_t.COMPLEX_FLOAT32, 1)
But then when I tried to send a packet using
self._tx_queue = gr.msg_queue(100)
pkt = "hello world"
msg = gr.message_from_string(pkt)
self._tx_queue.insert_tail(msg)
md = uhd.tx_metadata_t()
md.start_of_burst = True;
md.end_of_burst = True;
md.has_time_spec = False;
self._u.get_device().send(self._tx_queue,self._tx_queue.count(),md,uhd.io_type_t.COMPLEX_FLOAT32,uhd.device.SEND_MODE_FULL_BUFF)
I get the error message:
AttributeError: 'SwigPyObject' object has no attribute 'send'
>From what I understand, self._u.get_device() should return an instance of
uhd.device, but I guess it doesn't.
Can someone tell me what's going on? And how do I fix this (call send() in
python)?
Thank you very much. Hope to hear from you soon.
Johnny
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Message: 4
Date: Mon, 04 Apr 2011 15:21:54 -0700
From: Josh Blum <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] How to use UHD with gnuradio
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
> I get the error message:
> AttributeError: 'SwigPyObject' object has no attribute 'send'
>
> From what I understand, self._u.get_device() should return an instance of
> uhd.device, but I guess it doesn't.
>
> Can someone tell me what's going on? And how do I fix this (call send() in
> python)?
>
The send() call is not brought up into swig. In this environment you
should not call send or recv directly. Rather, use the gnuradio
scheduler to pass data between blocks. If you wanted to get a message
into the uhd sink block, use the gr_message_source block.
To better understand, you may want to look at more gnuradio apps before
continuing; or see gnuradio-companion.
-Josh
------------------------------
Message: 5
Date: Tue, 5 Apr 2011 16:34:30 +0200
From: "Paola Madonna" <[email protected]>
To: <[email protected]>
Subject: [USRP-users] Max power level of input signal usrp1
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"
Hello,
we are using a signal generator to generate the input signal for USRP1 with
dbsrx2 dautherboard. We are generating a sinusoidal waveform with -90dBm and
a frequency of 850MHz but the spectrum is probably under the noise floor. So
we ask what is the maximum value of power input signal level in dBm which
the USRP1 can support.
Thanks in advance,
Paola Madonna
T.R.S S.p.A.
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Message: 6
Date: Tue, 5 Apr 2011 09:50:43 -0500
From: John Orlando <[email protected]>
To: Paola Madonna <[email protected]>
Cc: [email protected]
Subject: Re: [USRP-users] Max power level of input signal usrp1
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
On Tue, Apr 5, 2011 at 9:34 AM, Paola Madonna <[email protected]> wrote:
> Hello,
>
> we are using a signal generator to generate the input signal for USRP1 with
> dbsrx2 dautherboard. We are generating a sinusoidal waveform with -90dBm and
> a frequency of 850MHz but the spectrum is probably under the noise floor. So
> we ask what is the maximum value of power input signal level in dBm which
> the USRP1 can support.
>
How are you viewing the spectrum? If you are using usrp_fft.py, and can set
the gain appropriately, a -90 dBm sinusoid will almost certainly be visible
above the noise floor.
I'm guessing the folks from Ettus Research can provide official guidance on
the max input power of the dbsrx2, but you still have plenty of room to
increase the signal level. We've put -50 dBm into the original dbsrx card,
and I don't think we were close to the point of damaging the card. You may
need to play with the gain to prevent saturation though.
--
John Orlando
CEO/System Architect
Epiq Solutions
http://www.epiq-solutions.com
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Message: 7
Date: Tue, 5 Apr 2011 17:03:58 +0200
From: "Luca Sfarzo" <[email protected]>
To: <[email protected]>
Subject: [USRP-users] Help request with instaling
Message-ID: <015001cbf3a2$b12e8aa0$138b9fe0$@[email protected]>
Content-Type: text/plain; charset="us-ascii"
Hello,
I'm writing this email since we tried to install the
<http://www.ettus.com/downloads/uhd_releases/003_000_001/> 003.000.001 -
2011/04/01 version of the UHD driver to manage an USRP 1 with DBSRX2
daughterboard.
My colleague Paola Madonna wrote some email to ask for help as we're
currently not able to drive this equipment.
Today I tried to install the aforementioned driver on some Windows 7 PC but,
unfortunately, we're experiencing always the same result.
After having installed the USB driver, the binary UHD installation file and,
where needed, the Microsoft VC++ 2010 Redistributable package what we
always get is:
1) The uhd_find_devices.exe runs fine and everything goes well.
2) The uhd_usrp_probe.exe crashes after that sequence:
C:\Program Files\UHD 003.000.001\bin>uhd_usrp_probe.exe
Win32; Microsoft Visual C++ version 10.0; Boost_104400;
UHD_003.000.001-release
Loading firmware image: C:/Program Files/UHD 003.000.001/bin/usrp1_fw.ihx...
done
Loading FPGA image: C:/Program Files/UHD 003.000.001/bin/usrp1_fpga.rbf...
done
Since this behavior exhibits on all the 3 different PCs we've used I would
kindly ask you some help, if possible.
To add a bit of details:
1 PC had windows XP 32 bit
2 PCs had windows 7 32 bit and one of the two PCs was brand new.
Best regards,
____________________________
Luca Sfarzo
Head of ATM Navigation Unit
TRS S.p.A.
Via Giulio Cesare 105
c/o Selex-SI, Stab. Fusaro
80070 Bacoli (NA)
Italy
Ph.:+39 (0)81 52 72 842
Mobile: +39 335 52 51 893
Fax: +39 (0)81 52 72 828
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