[Discuss-gnuradio] Support for 8-bit USB samples in GRC

2009-01-30 Thread Marcus D. Leech
Josh, et al: Do you have plans to support 8-bit sample settings in the GRC USRP objects? -- Marcus Leech Principal Investigator, Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org

Re: [Discuss-gnuradio] GNU Radio and Gumstix

2009-01-30 Thread Dan
On Thu, Jan 29, 2009 at 3:49 PM, Philip Balister philip.balis...@gmail.comwrote: OK, I've updated oe.dev so that you can build gnuradio (r10302) with NEON implementation of the fff dotprod. I'm told the files should flow into the overo build system soon also. To build, (short form for

Re: [Discuss-gnuradio] Small cleanups for inband code

2009-01-30 Thread Stefan Brüns
There are some brackets missing. Please apply onto inband_cleanup1.diff Stefan -- Stefan Brüns / Bergstraße 21 / 52062 Aachen mailto:lurch at gmx.li http://www.kawo1.rwth-aachen.de/~lurchi/ phone: +49 241 53809034 mobile: +49 151 50412019 === modified file

Re: [Discuss-gnuradio] OFDM Updates

2009-01-30 Thread adib_sairi
hi, i would like to try the OFDM example but i cannot find the benchmark_ofdm_tx.py and benchmark_ofdm_rx.py file in /gnuradio-example/python/digital. did i search it in the wrong place or did the file being remove from the gnuradio-3.1.3.tar ? trondeau wrote: For anyone working with the

Re: [Discuss-gnuradio] USRP continues to transmit after usrp_siggen.py stopped

2009-01-30 Thread Kimminau Jr., Leo F.
On Mon, Jan 26, 2009 at 09:03:32PM -0800, Johnathan Corgan wrote: On Sun, Jan 25, 2009 at 9:21 PM, Kimminau Jr., Leo F. addr...@hidden wrote: Using a PowerMac G5 to control the USRP, if I stop usrp_siggen.py, the USRP continues to transmit. Is this expected? No. This behavior is

[Discuss-gnuradio] Problem with FFT of simple signal

2009-01-30 Thread Emil Molin
Im learning about gnuradio for my final thesis (quite common i see) and i wanted to show a simple FFT of a simple signal (or noise) but the only thing i get the GUI working for is audio input from the microphone. Running it with a generated signal causes the program to freeze. Here is my code:

Re: [Discuss-gnuradio] Support for 8-bit USB samples in GRC

2009-01-30 Thread Josh Blum
There are plans now... Any example code would help Marcus D. Leech wrote: Josh, et al: Do you have plans to support 8-bit sample settings in the GRC USRP objects? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org

Re: [Discuss-gnuradio] Problem with FFT of simple signal

2009-01-30 Thread Firas Abbas
Hi, On Fri, 1/30/09, Emil Molin molin.e...@gmail.com wrote: Running it with a generated signal causes the program to freeze. This is normal since there is no sampling rate control in your code and your CPU will be eaten. To overcome this problem use gr.throttle API in you code. Best

Re: [Discuss-gnuradio] Small cleanups for inband code

2009-01-30 Thread Stefan Brüns
Here is another series of patches. These come in 3 flavours: Independent, general cleanups and additions, which neither influence API nor ABI c1255: Minor optimization, assume well formed list as common case c1256: Avoid some double type casting c1261: Add some unit test

[Discuss-gnuradio] calculation of the real transmitted signal power if --tx-amplitidue is set dynamically

2009-01-30 Thread Bill Stevenson
Hello, all! We are using RFX2400 to transmit some signals. As known, transmit power of that board is said to be 50mW shown on the datasheet and the default value of --tx-amplitude in benchmark_tx.py file is 12000. Can we say the real transmitted signal power is 50mW which is correspoding to

Re: [Discuss-gnuradio] calculation of the real transmitted signal power if --tx-amplitidue is set dynamically

2009-01-30 Thread Matt Ettus
Bill Stevenson wrote: Hello, all! We are using RFX2400 to transmit some signals. As known, transmit power of that board is said to be 50mW shown on the datasheet and the default value of --tx-amplitude in benchmark_tx.py file is 12000. Can we say the real transmitted signal power is 50mW

[Discuss-gnuradio] Maximum bandwidth out of USRP

2009-01-30 Thread Marcus D. Leech
If I'm using the USRP in 8-bit sample mode, can I get 16Msps complex data over to the host, or am I maxed out at 8Msps? -- Marcus Leech Principal Investigator, Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio

Re: [Discuss-gnuradio] Maximum bandwidth out of USRP

2009-01-30 Thread Eric Blossom
On Fri, Jan 30, 2009 at 01:16:34PM -0500, Marcus D. Leech wrote: If I'm using the USRP in 8-bit sample mode, can I get 16Msps complex data over to the host, or am I maxed out at 8Msps? It'll do 16MS/s in 8-bit. Eric ___ Discuss-gnuradio mailing

[Discuss-gnuradio] USRP2 missing Quadrature samples

2009-01-30 Thread Leslie Choong
Hi Everyone, I've been working with Thomas Schmid's old 802.1.54 demodulation code. I've got it running well on the original USRP and have been trying to get the code to work with the USRP2. I basically just changed out the source block and yet could not properly demodulate a packet. To

Re: [Discuss-gnuradio] USRP2 missing Quadrature samples

2009-01-30 Thread Matt Ettus
Leslie Choong wrote: Hi Everyone, I've been working with Thomas Schmid's old 802.1.54 demodulation code. I've got it running well on the original USRP and have been trying to get the code to work with the USRP2. I basically just changed out the source block and yet could not properly

Re: [Discuss-gnuradio] OFDM Updates

2009-01-30 Thread Eric Blossom
On Fri, Jan 30, 2009 at 06:52:24AM -0800, adib_sairi wrote: hi, i would like to try the OFDM example but i cannot find the benchmark_ofdm_tx.py and benchmark_ofdm_rx.py file in /gnuradio-example/python/digital. did i search it in the wrong place or did the file being remove from the

Re: [Discuss-gnuradio] USRP2 missing Quadrature samples

2009-01-30 Thread Leslie Choong
Thanks for the replies. I have checked the Quadrature values and they are indeed 0.0 I had already followed the steps to flash the SD card (using the one that came with the USRP2) and used the firmware (txrx.bin) that gnuradio (rev 10306) produced using make. I used the latest u2_rev3.bin (dated

Re: [Discuss-gnuradio] problem with USRP

2009-01-30 Thread Tushar Patel
Hi try to run usrp_oscope.py and usrp_fft.py, which are gui type exaples. but application run then it show oUoUoU error, which I fount the USRP overrun. I run all this on VMware platform. I am using amd 64 turion, 3gb ram configuration. So I do not able to understand why my system getting low.

[Discuss-gnuradio] Viewing logged data in .dat files

2009-01-30 Thread Maduike, Dumezie
Hello all, I have a question regarding viewing data that is acquired from log commands which are stored in .dat files. Using gr.file_sink, it seems that the encoding of the data is in a format that can't be opened using applications in Ubuntu. Does anyone know of a way to see the information

Re: [Discuss-gnuradio] calculation of the real transmitted signal power if --tx-amplitidue is set dynamically

2009-01-30 Thread Bill Stevenson
- Forwarded Message From: Bill Stevenson bill.stevenso...@yahoo.com To: Matt Ettus m...@ettus.com Sent: Friday, January 30, 2009 5:39:18 PM Subject: Re: [Discuss-gnuradio] calculation of the real transmitted signal power if --tx-amplitidue is set dynamically

Re: [Discuss-gnuradio] Viewing logged data in .dat files

2009-01-30 Thread George Nychis
Maduike, Dumezie wrote: Hello all, I have a question regarding viewing data that is acquired from log commands which are stored in .dat files. Using gr.file_sink, it seems that the encoding of the data is in a format that can't be opened using applications in Ubuntu. Does anyone know of

Re: [Discuss-gnuradio] USRP2 missing Quadrature samples

2009-01-30 Thread Leslie Choong
So I've pulled down the most recent trunk and re-built gnuradio. One thing I noticed that I forgot about was that running make in gnuradio/usrp2 does not produce a txrx.bin under usrp2/firmware/apps. I must have copied the latest one sitting in the trunk which is dated Dec 31st (same date as the

Re: [Discuss-gnuradio] USRP2 missing Quadrature samples

2009-01-30 Thread Eric Blossom
On Fri, Jan 30, 2009 at 04:24:55PM -0800, Leslie Choong wrote: So I've pulled down the most recent trunk and re-built gnuradio. One thing I noticed that I forgot about was that running make in gnuradio/usrp2 does not produce a txrx.bin under usrp2/firmware/apps. I must have copied the latest

Re: [Discuss-gnuradio] Support for 8-bit USB samples in GRC

2009-01-30 Thread Marcus D. Leech
Josh Blum wrote: svn up! let me know if something goes wrong Intersesting. When I use 8-bit samples with decim=8 or higher, things are peachy. But when I use decim=16 with 8-bits samples, I get a continuous stream of -423dB out of the FFT Log Power sink. I think what I'm getting is a pile

RE: [Discuss-gnuradio] Viewing logged data in .dat files

2009-01-30 Thread Dumezie Maduike
Is the octaverc configuration file referred in the link you sent me the same in /usr/share/octave/3.0.0/m/startup folder? How is the read_complex_binary() script used? Can it be used in a python script and if so, what should be imported? Thanks Dumezie -Original Message- From: George

Re: [Discuss-gnuradio] Support for 8-bit USB samples in GRC

2009-01-30 Thread Josh Blum
According to this: http://gnuradio.org/trac/browser/gnuradio/trunk/gr-usrp/apps/usrp_rx_cfile.cc#L87 if you dont like half band filters or you want to decimate by 4, std_4rx_0tx.rbf is the firmware for you so, it seems that the correct thing to do in grc would be to set this

Re: [Discuss-gnuradio] Support for 8-bit USB samples in GRC

2009-01-30 Thread Firas Abbas
Hi, When working with 8 bit samples, you must disable FPGA halfband filter see (http://gnuradio.org/trac/wiki/UsrpFAQ/DDC). To do so, the USRP (via GRC) should load the std_4rx_0tx.rbf image. Best Regards, Firas ___ Discuss-gnuradio mailing