[Discuss-gnuradio] Changing four parallel pipes of ADC's into two parallel pipes of ADC's(having interleaved IQ as in the case of DAC's)
Hello Eric, In USRP1, I don't want AD9862 to use in my application for many reasons. Am looking for changing four parallel pipes of ADC's into two parallel pipes of ADC's(having interleaved IQ as in the case of DAC's). I need only changes required to be done in FPGA. Although i know that the ADC data bus to FPGA will have to be clocked twice the sampling rate. I believe this may be a minimal change required in the FPGA. Can anyone support me for doing this change. Regards Sanjay ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Souce Block
Hi! I have many source blocks with different kinds of signal generator and I want to create a configurable unique block. Can I make a source block with multiple outputs each one with a different rate? Thank you, John ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] WBX: Failed to set center frequency
Hello, I'm doing some spectrum sensing with the WBX and the USRP2, I'm using the usrp_spectrum_sense script. I do my scans over the whole range of the WBX, from 50 MHz to 2.2GHz. When I do a scan, sometimes I'll get an error message Failed to set center frequency: FFF At first, I thought I had either my tune_delay or dwell_delay value set too low. I tried increasing both incrementally to 500ms each. This helped a little, but there are certainly still failures. Usually it will fail 0-8 times per scan. I've noticed to that a lot of the same frequencies will fail, but it's never consistent. I've also noticed some unexplained peaks that occur near the frequencies that fail. There are certainly more of these peaks when I have more failures. So far, I've been testing in a controlled envoironment with either the input terminated or using a tone generated by a signal generator. Has anyone else run into this problem? I don't think it could be the tune/dwell delays, 500ms is really high delay time. Is there an optimal tune/dwell delay for the WBX? No values I've tried have fully solved my problem though. Could either the tune/dwell delay times be frequency dependent? Thanks For Any Help, Devin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP and RFID
Hello! We are just working on a project aiming at investigating the use of the Ettus USRP device concerning RFID sniffing. According to the manuals, purchasing the LFTX and the RFTX devices should be suitable for being able to talk to 125kHz and 13,56Mhz RFID devices. What kind of antennas do you recommend for this purpose? Will simple loops of copper suffice? Are there any tutorials or papers available which concentrate on using Gnuradio in terms of RFID? I know that OpenPCD Co might offer an easier way to go, but as I want to learn about the stuff I decided to go the more difficult way. Thanks for your help any kind of comment, Fabian Steiner ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP and RFID
Hi, there is a project for Gen2 RFID chips, they have a reader implementation for the USRP1 and a monitoring tool to eavesdrop on reader-tag communication for the USRP2: https://www.cgran.org/wiki/Gen2 There are also papers on the design posted there. They had to tinker with the USB driver as well because of timing issues with the reader. I think Gen2 is only ~868MHz, I don't know if the code can be adapted to 13.56MHz stuff. And for a (duplex) reader you will need a URSP1 there, because two 900-daughterboards are required. It may be possible out of the box to build a reader for 13.56MHz with the USRP2, as you have two half-daughterboards. For the protocol implementation, you can take a look at http://www.libnfc.org it seems that they have some Gen1 support and you only have to implement the physical layer in gnuradio. We are currently thinking to start a RFID project as well, so I'm interested what you find out. Matthias Am 25.08.2010 um 16:38 schrieb r...@fabis-site.net: Hello! We are just working on a project aiming at investigating the use of the Ettus USRP device concerning RFID sniffing. According to the manuals, purchasing the LFTX and the RFTX devices should be suitable for being able to talk to 125kHz and 13,56Mhz RFID devices. What kind of antennas do you recommend for this purpose? Will simple loops of copper suffice? Are there any tutorials or papers available which concentrate on using Gnuradio in terms of RFID? I know that OpenPCD Co might offer an easier way to go, but as I want to learn about the stuff I decided to go the more difficult way. Thanks for your help any kind of comment, Fabian Steiner ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP/gnuradio Issues in OS X
I just updated to the latest GIT master indeed make check fails in gr-usrp with the Symbol not found: _usb_debug in gr-usrp if MacPorts 'libusb-compat' is installed -- thanks for the pointer, Mark. I'll request in MacPorts that the PKGCONFIG file for 'libusb-compat' be renamed to reflect that (may or not work). And for GNU Radio, I'm tweaking the config/usrp_libusb.m4 script to also check for the symbol _usb_debug when a legacy library is found (the 'compat' version does not have this symbol). I'll create a branch for testing later today if all goes well. - MLD ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Souce Block
On Wed, Aug 25, 2010 at 10:08:22AM -0300, John Li wrote:
Hi!
I have many source blocks with different kinds of signal generator and I
want to create a configurable unique block.
Can I make a source block with multiple outputs each one with a different
rate?
Thank you,
John
Yes you can in 3.3.*
Your block will need to derive from gr_block, and in general_work you
must call produce for each output streams, and general_work must
return WORK_CALLED_PRODUCE as it's value.
From gr_block.h:
//! Magic return values from general_work
enum {
WORK_CALLED_PRODUCE = -2,
WORK_DONE = -1
};
...
/*!
* \brief Tell the scheduler \p how_many_items were produced on output stream
\p which_output.
*
* If the block's general_work method calls produce, \p general_work must
return WORK_CALLED_PRODUCE.
*/
void produce (int which_output, int how_many_items);
Eric
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Re: [Discuss-gnuradio] 10 bit samples
On Wed, Aug 25, 2010 at 9:58 AM, Vincenzo Pellegrini wwvi...@gmail.com wrote: Hi everybody, Just a very simple question: Is it possible to obtain 10 bit samples out of USRP (either 1 or 2) by using suitable libusrp primitives / parameters? No. But you can produce 8-bit samples on the USRP1 by appropriately setting the FR_RX_FORMAT register. You can set it through the standard interface. This option is not available on the USRP2. Thomas ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Invitation to connect on LinkedIn
LinkedIn Robert McGwier requested to add you as a connection on LinkedIn: -- Abdul, I'd like to add you to my professional network on LinkedIn. - Robert Accept invitation from Robert McGwier http://www.linkedin.com/e/kcqq4e-gdaj09g6-6s/vd6zfNxBgx85xjU-yrUbg0DbdNCYdgCBPTBioq/blk/I822434776_3/pmpxnSRJrSdvj4R5fnhv9ClRsDgZp6lQs6lzoQ5AomZIpn8_cRYSdPsQcPgOczx9bRtViTxIulBEbPwPdjsMe34Mdz4LrCBxbOYWrSlI/EML_comm_afe/ View invitation from Robert McGwier http://www.linkedin.com/e/kcqq4e-gdaj09g6-6s/vd6zfNxBgx85xjU-yrUbg0DbdNCYdgCBPTBioq/blk/I822434776_3/0PnPoTdPgPd38Oe4ALqnpPbOYWrSlI/svi/ -- DID YOU KNOW that LinkedIn can find the answers to your most difficult questions? Post those vexing questions on LinkedIn Answers to tap into the knowledge of the world's foremost business experts: http://www.linkedin.com/e/kcqq4e-gdaj09g6-6s/ask/inv-23/ -- (c) 2010, LinkedIn Corporation___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Hi All, I followed the instructions on http://gnuradio.org/redmine/wiki/gnuradio/UbuntuInstall to install gnuradio-3.3.0 onto Ubuntu-10.04 LTS. I used qwt-5.2.1, boost_1_37_0, and all other packages from synaptic package manager. After ./configure --with-boost=$BOOST_PREFIX, I got: The following GNU Radio components have been successfully configured: config gruel gnuradio-core usrp usrp2 gr-usrp gr-usrp2 gr-msdd6000 gr-audio-alsa gr-audio-oss gr-atsc gr-cvsd-vocoder gr-gpio gr-gsm-fr-vocoder gr-noaa gr-pager gr-radar-mono gr-radio-astronomy gr-trellis gr-video-sdl gr-wxgui gr-qtgui gr-sounder gr-utils gnuradio-examples grc docs You my now run the make command to build these components. * The following components were skipped either because you asked not to build them or they didn't pass configuration checks: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi These components will not be built. Configured GNU Radio release 3.3.0 for build. Meanwhile, there is no error during the installation. And the USRP is recognized by ls -lR /dev/bus/usb | grep usrp, I got crw-rw 1 root usrp 189, 129 2010-08-25 13:12 002. However, when I tried to run ./usrp_benchmark_usb.py, I got the error that ImportError: cannot import name usrp. I also found that there is nothing under directory /usr/local/lib/python2.6/site-packages. How should I fix this problem? Can anyone give me some advice? Thanks in advance, Brook -- View this message in context: http://old.nabble.com/Gnuradio-3.3.0-on-Ubuntu-10.04-tp29535765p29535765.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Hi, On Aug 25, 2010, at 10:28 PM, Brook Lin wrote: I also found that there is nothing under directory /usr/local/lib/python2.6/site-packages. How should I fix this problem? Can anyone give me some advice? Perhaps this is because you might not have run a sudo make install after building gnuradio, which will install the required python packages into /usr/local/lib Best regards, Elvis ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks, Elvis. But I actually did sudo make install. After all the necessary packages installed, I followed these steps: cd gnuradio-3.3.0 export LD_LIBRARY_PATH=$BOOST_PREFIX/lib ./bootstrap ./configure --with-boost=$BOOST_PREFIX make make check sudo make install More advice? Thanks, Brook Elvis Dowson wrote: Hi, On Aug 25, 2010, at 10:28 PM, Brook Lin wrote: I also found that there is nothing under directory /usr/local/lib/python2.6/site-packages. How should I fix this problem? Can anyone give me some advice? Perhaps this is because you might not have run a sudo make install after building gnuradio, which will install the required python packages into /usr/local/lib Best regards, Elvis ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- View this message in context: http://old.nabble.com/Gnuradio-3.3.0-on-Ubuntu-10.04-tp29535765p29535981.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
This might also be because you have not setup the usrp in udev? http://k1vzx.com/mediawiki/index.php?title=USRP:_Software_Setup ~JeffL On 8/25/2010 3:28 PM, Brook Lin wrote: Hi All, I followed the instructions on http://gnuradio.org/redmine/wiki/gnuradio/UbuntuInstall to install gnuradio-3.3.0 onto Ubuntu-10.04 LTS. I used qwt-5.2.1, boost_1_37_0, and all other packages from synaptic package manager. After ./configure --with-boost=$BOOST_PREFIX, I got: The following GNU Radio components have been successfully configured: config gruel gnuradio-core usrp usrp2 gr-usrp gr-usrp2 gr-msdd6000 gr-audio-alsa gr-audio-oss gr-atsc gr-cvsd-vocoder gr-gpio gr-gsm-fr-vocoder gr-noaa gr-pager gr-radar-mono gr-radio-astronomy gr-trellis gr-video-sdl gr-wxgui gr-qtgui gr-sounder gr-utils gnuradio-examples grc docs You my now run the make command to build these components. * The following components were skipped either because you asked not to build them or they didn't pass configuration checks: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi These components will not be built. Configured GNU Radio release 3.3.0 for build. Meanwhile, there is no error during the installation. And the USRP is recognized by ls -lR /dev/bus/usb | grep usrp, I got crw-rw 1 root usrp 189, 129 2010-08-25 13:12 002. However, when I tried to run ./usrp_benchmark_usb.py, I got the error that ImportError: cannot import name usrp. I also found that there is nothing under directory /usr/local/lib/python2.6/site-packages. How should I fix this problem? Can anyone give me some advice? Thanks in advance, Brook -- ~Jeffrey Lambert, K1VZX ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
On Wed, Aug 25, 2010 at 3:56 PM, Brook Lin gnu.f...@yahoo.com wrote: Thanks, Elvis. But I actually did sudo make install. After all the necessary packages installed, I followed these steps: cd gnuradio-3.3.0 export LD_LIBRARY_PATH=$BOOST_PREFIX/lib ./bootstrap ./configure --with-boost=$BOOST_PREFIX make make check sudo make install More advice? Thanks, Brook sudo ldconfig The python packages should be in /usr/local/lib/python/dist-packages/gnuradio -- Doug Geiger doug.gei...@bioradiation.net ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Changing four parallel pipes of ADC's into two parallel pipes of ADC's(having interleaved IQ as in the case of DAC's)
On Wed, Aug 25, 2010 at 11:53:02AM +0530, Sanjay Singh wrote: Hello Eric, In USRP1, I don't want AD9862 to use in my application for many reasons. Am looking for changing four parallel pipes of ADC's into two parallel pipes of ADC's(having interleaved IQ as in the case of DAC's). I need only changes required to be done in FPGA. Although i know that the ADC data bus to FPGA will have to be clocked twice the sampling rate. I believe this may be a minimal change required in the FPGA. Can anyone support me for doing this change. Regards Sanjay Sanjay, I'm sorry that I don't understand exactly what it is that you are trying to do with the ADC path in the AD9862. (Or what you hope to accomplish with this change.) By default we configure the AD9862 so that it's in Dual Channel Complex ADC Signal mode (Rev 0 datasheet pg 23, under RECEIVE APPLICATIONS SECTION). This puts the I Q out separate pins on the chip. We do not have the Hilter Filter enabled, so the two streams (I Q) are effectively independent. (See Figure 6 on pg 22). You could reprogram the AD9862 to put it into Dual Channel Real ADC Signal mode, but since we're not using the Hilbert Filter these two modes are equivalent. If you want interleaved I Q, I suggest that you do that in the FPGA, and not by changing the interface between the the AD9862 and the FPGA. Why I say this is because the existing configuration is well tested, and meets all the timing requirements for the interface between the FPGA and the AD9862. If I haven't answered your question, please try asking it again. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks again for your replies. But, I did try: $ cp /etc/ld.so.conf /tmp/ld.so.conf $ echo /usr/local/lib /tmp/ld.so.conf $ sudo mv /tmp/ld.so.conf /etc/ld.so.conf $ sudo ldconfig Nothing helps. BTW, I used libboost-all-dev from synaptic package manager rather than boost_1_37_0. Doug, you are right. I find gnuradio under /usr/local/lib/python/dist-packages/. My old Ubuntu version has the path /usr/local/lib/python/site-packages/gnuradio. Other solutions? Thanks, Brook Jeffrey Lambert wrote: This might also be because you have not setup the usrp in udev? http://k1vzx.com/mediawiki/index.php?title=USRP:_Software_Setup ~JeffL On 8/25/2010 3:28 PM, Brook Lin wrote: Hi All, I followed the instructions on http://gnuradio.org/redmine/wiki/gnuradio/UbuntuInstall to install gnuradio-3.3.0 onto Ubuntu-10.04 LTS. I used qwt-5.2.1, boost_1_37_0, and all other packages from synaptic package manager. After ./configure --with-boost=$BOOST_PREFIX, I got: The following GNU Radio components have been successfully configured: config gruel gnuradio-core usrp usrp2 gr-usrp gr-usrp2 gr-msdd6000 gr-audio-alsa gr-audio-oss gr-atsc gr-cvsd-vocoder gr-gpio gr-gsm-fr-vocoder gr-noaa gr-pager gr-radar-mono gr-radio-astronomy gr-trellis gr-video-sdl gr-wxgui gr-qtgui gr-sounder gr-utils gnuradio-examples grc docs You my now run the make command to build these components. * The following components were skipped either because you asked not to build them or they didn't pass configuration checks: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi These components will not be built. Configured GNU Radio release 3.3.0 for build. Meanwhile, there is no error during the installation. And the USRP is recognized by ls -lR /dev/bus/usb | grep usrp, I got crw-rw 1 root usrp 189, 129 2010-08-25 13:12 002. However, when I tried to run ./usrp_benchmark_usb.py, I got the error that ImportError: cannot import name usrp. I also found that there is nothing under directory /usr/local/lib/python2.6/site-packages. How should I fix this problem? Can anyone give me some advice? Thanks in advance, Brook -- ~Jeffrey Lambert, K1VZX ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- View this message in context: http://old.nabble.com/Gnuradio-3.3.0-on-Ubuntu-10.04-tp29535765p29536641.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] MIMO cable and timestamps (raw ethernet)
With rx_streaming_samples.cc as a starting point, I created a new usrp2::rx_sample_handler that simply buffers samples in memory. The handler's operator() is shown below. I need precise timing data between receives, so it counts sample clock overflows to form a 64-bit time. To make sure it was working as I expected, it predicts the next metadata-timestamp according to the number of samples in the current frame and the decimation. In the next frame, I compare the actual timestamp to the expected timestamp and report any discrepancies. Once I got my own bugs out and worked around what appears to be a startup glitch, it's been working fine and never reports a problem unless there's an overrun. Elsewhere I check rx_missing() so know when overruns happen even if I don't see an S go by. Today I tried synchronizing a transmitter USRP2 and receiver USRP2 using a MIMO cable. Now it's reporting very frequent timestamp errors, but no overruns: Time error in frame 2. Off by -1073638088 ticks. Time error in frame 20. Off by -1073897439 ticks. Time error in frame 39. Off by 1258260742 ticks. Time error in frame 40. Off by 8396679 ticks. Time error in frame 57. Off by -8413060 ticks. Time error in frame 76. Off by -171977540 ticks. Time error in frame 94. Off by -12634786 ticks. Time error in frame 95. Off by -2876 ticks. Time error in frame 107. Off by 193028100 ticks. Time error in frame 113. Off by -184639590 ticks. Time error in frame 132. Off by -1079918709 ticks. ... Just having the MIMO cable hooked up causes the problem. I doesn't matter whether I config_mimo() to set up one box with MC_WE_LOCK_TO_MIMO and one with MC_PROVIDE_CLK_TO_MIMO or configure both to MC_WE_DONT_LOCK. In either case it spews errors. If I disconnect the MIMO cable, no time errors are reported. I'm using gnuradio 3.3.0. Both USRP2s have u2_rev3-20100603.bin. One has txrx_xcvr_raw_eth_20100608.bin and an xcvr2450, the other has txrx_raw_eth_20100608.bin and a DBSRX. Have I misunderstood something? Is there something more I need to do? Is there a bug in my code? Any other thoughts or suggestions? -Marc bool operator()(const uint32_t *items, size_t numItems, const usrp2::rx_metadata *metadata) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
On Wed, Aug 25, 2010 at 02:21:27PM -0700, Brook Lin wrote: Thanks again for your replies. But, I did try: $ cp /etc/ld.so.conf /tmp/ld.so.conf $ echo /usr/local/lib /tmp/ld.so.conf $ sudo mv /tmp/ld.so.conf /etc/ld.so.conf $ sudo ldconfig Nothing helps. BTW, I used libboost-all-dev from synaptic package manager rather than boost_1_37_0. Doug, you are right. I find gnuradio under /usr/local/lib/python/dist-packages/. My old Ubuntu version has the path /usr/local/lib/python/site-packages/gnuradio. Other solutions? Is your PYTHONPATH set to /usr/local/lib/python2.6/dist-packages? Is your PYTHONPATH exported? Does this work: $ python Python 2.6.4 (r264:75706, Jun 4 2010, 18:20:31) [GCC 4.4.4 20100503 (Red Hat 4.4.4-2)] on linux2 Type help, copyright, credits or license for more information. from gnuradio import gr from gnuradio import usrp exit() Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] MIMO cable and timestamps (raw ethernet)
Oops. The code got cut off. Here's the full routine. -Marc
bool operator()(const uint32_t *items, size_t numItems, const
usrp2::rx_metadata *metadata)
{
if (_numFrames == 0)
{
// The expected time prediction for the second frame is always off by
19 ticks,
// suggesting that the first frame is messed up somehow.
// As a work-around, we just ignore the first frame as if it never
happened.
++_numFrames;
return true;
}
if (_numFrames == 1)
_startingSampleClock32 = metadata-timestamp;
else
{
if (metadata-timestamp != _expectedSampleClock32)
{
++_numTimeErrors;
fprintf (stdout, Time error in frame %llu. Off by %d ticks.\n,
_numFrames, metadata-timestamp - _expectedSampleClock32);
}
}
++_numFrames;
_expectedSampleClock32 = metadata-timestamp + numItems*_decimation;
size_t numRemaining = _buffer.size() - _numSamples;
size_t numToCopy = std::min(numItems, numRemaining);
memcpy(_buffer[_numSamples], items, numToCopy*sizeof(_buffer[0]));
_numSamples += numToCopy;
if (_numSamples == _buffer.size())
{
_endingSampleClock32 = metadata-timestamp + numToCopy*_decimation;
return false;
}
return true;
}
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Re: [Discuss-gnuradio] USRP2+WBX full duplex doesn't receive
On Aug 24, 2010, at 11:16 PM, George Nychis wrote: I don't think I've had this issue with my WBX and USRP2. I will check tomorrow for you Thanks! I'd appreciate it. I've now replicated the problem with a XCVR2450, so I don't think it's WBX-specific. I've altered my code to support separate USRP2s for transmit and receive, switched to a host with two ethernet ports, and... it works! I'm able to transmit on one and receive on the other simultaneously. The same code (except for having a single usrp2 object instead of two) cannot transmit and receive at the same time using just one USRP2 with either a WGX or XCVR2450. Back to my firmware/FPGA exploration... -Marc ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP2+WBX full duplex doesn't receive
On Aug 24, 2010, at 11:16 PM, George Nychis wrote: I don't think I've had this issue with my WBX and USRP2. I will check tomorrow for you Thanks! I'd appreciate it. I've now replicated the problem with a XCVR2450, so I don't think it's WBX-specific. Just to note that the XCVR2450 has only a single VFO, so full-duplex on different frequencies can't work--the hardware isn't capable of it. But full-duplex on the WBX should work provided that you use the RX/RX port for transmit and the RX2 (secondary receive) antenna port for Rx. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks, Eric. Is your PYTHONPATH set to /usr/local/lib/python2.6/dist-packages? Is your PYTHONPATH exported? I'm not sure on these two questions. I installed python2.6 from synaptic package manager, I thought it should set the path right. If not, could you please tell me how to set PYTHONPATH and how to export PYTHONPATH? In the shell, before invoking any Gnu Radio application: PYTHONPATH=/usr/local/lib/python2.6/dist-packages export PYTHONPATH You can put these in the .bashrc file in your home directory if it becomes a pain to type manually. You might want to get a book on Linux for beginners or something like that, which will help you with quite simple things like how to set an environment variable. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks, Eric. Is your PYTHONPATH set to /usr/local/lib/python2.6/dist-packages? Is your PYTHONPATH exported? I'm not sure on these two questions. I installed python2.6 from synaptic package manager, I thought it should set the path right. If not, could you please tell me how to set PYTHONPATH and how to export PYTHONPATH? Here is the result when I test $ python Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC 4.4.3] on linux2 Type help, copyright, credits or license for more information. from gnuradio import gr from gnuradio import usrp Traceback (most recent call last): File stdin, line 1, in module ImportError: cannot import name usrp Thanks, Brook -- View this message in context: http://old.nabble.com/Gnuradio-3.3.0-on-Ubuntu-10.04-tp29535765p29536930.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks, all. However, after I set the PYTHONPATH and export it. I still get the same error when I run ./usrp_benchmark_usb.py. But, if I test $ python, everything works. Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC 4.4.3] on linux2 Type help, copyright, credits or license for more information. from gnuradio import gr from gnuradio import usrp from gnuradio import audio Thanks, Brook Eric Blossom wrote: On Wed, Aug 25, 2010 at 02:21:27PM -0700, Brook Lin wrote: Thanks again for your replies. But, I did try: $ cp /etc/ld.so.conf /tmp/ld.so.conf $ echo /usr/local/lib /tmp/ld.so.conf $ sudo mv /tmp/ld.so.conf /etc/ld.so.conf $ sudo ldconfig Nothing helps. BTW, I used libboost-all-dev from synaptic package manager rather than boost_1_37_0. Doug, you are right. I find gnuradio under /usr/local/lib/python/dist-packages/. My old Ubuntu version has the path /usr/local/lib/python/site-packages/gnuradio. Other solutions? Is your PYTHONPATH set to /usr/local/lib/python2.6/dist-packages? Is your PYTHONPATH exported? Does this work: $ python Python 2.6.4 (r264:75706, Jun 4 2010, 18:20:31) [GCC 4.4.4 20100503 (Red Hat 4.4.4-2)] on linux2 Type help, copyright, credits or license for more information. from gnuradio import gr from gnuradio import usrp exit() Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- View this message in context: http://old.nabble.com/Gnuradio-3.3.0-on-Ubuntu-10.04-tp29535765p29537097.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP2 Installation
Hello all, I am new to the USRP2. I know with the USRP1, all I had to do was plug the USB cable into a linux machine and everything was ready to go. Is the same true with USRP2? I see posts talking about SD cards and writing data to it? Are there any other installation steps for the USRP2 besides just plugging the USB cable in? Jonathan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks, all. However, after I set the PYTHONPATH and export it. I still get the same error when I run ./usrp_benchmark_usb.py. But, if I test $ python, everything works. Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC 4.4.3] on linux2 Type help, copyright, credits or license for more information. What about other usrp-using applications, like usrp_fft.py ?? I think usrp_benchmark_usb.py is quite old, and may not have been maintained. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP2 Installation
Hello all, I am new to the USRP2. I know with the USRP1, all I had to do was plug the USB cable into a linux machine and everything was ready to go. Is the same true with USRP2? I see posts talking about SD cards and writing data to it? Are there any other installation steps for the USRP2 besides just plugging the USB cable in? Jonathan It depends on which daughtercards you're using. The as shipped from the factory SD card supports the raw ethernet protocol stack, and everything but the XCVR2450 and WBX cards. If you have a DBS_RX, you'll need to modify slightly to work with the USRP2: http://gnuradio.org/redmine/wiki/1/USRP2DBSRXModification If you have a WBX or XCVR daughtercard, you'll need different firmware, which you can find here: http://code.ettus.com/redmine/ettus/projects/public/wiki/U2binaries -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
Thanks, Marcus. I tried usrp_fft.py and got the same error. I also tried dial_tone.py under /gnuradio-example/python/audio, but I got the similar error: Traceback (most recent call last): File ./dial_tone.py, line 24, in module from gnuradio import audio File /usr/lib/python2.6/dist-packages/gnuradio/audio.py, line 88, in module __init__() File /usr/lib/python2.6/dist-packages/gnuradio/audio.py, line 78, in __init__ raise ImportError, 'Unable to locate an audio module.' ImportError: Unable to locate an audio module. However, if I import audio from gnuradio using $ python, there is no error. Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC 4.4.3] on linux2 Type help, copyright, credits or license for more information. from gnuradio import gr from gnuradio import audio Thanks, Brook -- View this message in context: http://old.nabble.com/Gnuradio-3.3.0-on-Ubuntu-10.04-tp29535765p29537436.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio-3.3.0 on Ubuntu-10.04
On Wed, Aug 25, 2010 at 04:03:59PM -0700, Brook Lin wrote: Thanks, Marcus. I tried usrp_fft.py and got the same error. I also tried dial_tone.py under /gnuradio-example/python/audio, but I got the similar error: I'm guessing that you have more than one installation on your system. Perhaps one installed a while back using a .deb, and the one that you're trying to build now. Remove all traces of GNU Radio, then try again... Eric Traceback (most recent call last): File ./dial_tone.py, line 24, in module from gnuradio import audio File /usr/lib/python2.6/dist-packages/gnuradio/audio.py, line 88, in module __init__() File /usr/lib/python2.6/dist-packages/gnuradio/audio.py, line 78, in __init__ raise ImportError, 'Unable to locate an audio module.' ImportError: Unable to locate an audio module. However, if I import audio from gnuradio using $ python, there is no error. Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) [GCC 4.4.3] on linux2 Type help, copyright, credits or license for more information. from gnuradio import gr from gnuradio import audio Thanks, Brook ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Muhammad Khan wants to stay in touch on LinkedIn
What's up with all the LinkedIN Requests?! ~Jeff On 8/25/2010 8:46 PM, Muhammad Khan wrote: LinkedIn Muhammad Khan requested to add you as a connection on LinkedIn: -- ~Jeffrey Lambert, K1VZX ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Muhammad Khan wants to stay in touch on LinkedIn
What's up with all the LinkedIN Requests?! ~Jeff On 8/25/2010 8:46 PM, Muhammad Khan wrote: LinkedIn Muhammad Khan requested to add you as a connection on LinkedIn: Looks like Abdul Hakeem gave discuss-gnuradio@gnu.org as his e-mail address on LinkedIn. That's rather broken. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Problems compiling testbench for USRP
Hello all, I've been trying to use some of the test benches provided from Ettus' site, in the fpga/tb directory. I'm using Quartus II and ModelSim with the latest version of the fpga code. I'm assuming that fullchip_tb.v is the test bench for the full fpga. However, the test bench seems to be written for a different module; The test bench doesn't interface directly with usrp_std, and instead instantiates fullchip. The ports are similar to usrp_std, but not the same. Was the test bench written for something else? Any additional info on the test benches (even a link) would be greatly appreciated. Nelson. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
