[Discuss-gnuradio] Questions about transmit and receive with USRP N210 & GNU 3.6.5 use SBX dboard

[kerry]

Hi,all:
I am trying to transmit something and receive it back using the same USRP
N210 device.
However it fails, or I did not do it correctly.

I run the receiver first use below command:

sudo ./benchmark_rx.py -f 2.45M

Then I run the transmitter use below command:

sudo ./benchmark_tx.py -f 2.45G 

The transmitter back  "."

But the receiver gives me:
TIMEOUT

I changed the frequency also did not work.

What can cause this?
Is this a hardware problem?
I use SBX dboard. I think it can both receive and transmit at the same time.
Or maybe my incorrect operation？

Thanks，
Ke




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[Discuss-gnuradio] gnu radio make test failed

[kerry]

Hi,all:

I had make test of gnuradio. But 99% test passed, 1 tests failed out of 240

The following tests FAILED:
  140 - qa_udp_source_sink(Failed)
Errors while running CTest
make:*** [test] Error 8

What wrong with it? Can it affect my program‘s running？

Best Regards,
kerry





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[Discuss-gnuradio] modify c++ source code

[kerry]

Hi，all：

I had ran uhd_fft.py successful. Now I want to modify the c++ source code in
"gr_uhd_usrp_source.cc". I read the uhd_fft.py code found parameter setting
through called set function(eg:set_center_freq()) in
"gr_uhd_usrp_source.cc". But when I modify the code it not execute the
"gr_uhd_usrp_source.cc" file. I don't know why? 

Look forward to your reply.

Thx
Ke



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[Discuss-gnuradio] running error

[kerry]

Hi,all:

I try to run an example about gnu radio. The runtime errors are captured as:

Using Volk machine: sse4_1_64_orc
gr-osmosdr v0.1.4-48-g86ad5842 (0.1.5git) gnuradio 3.7.7.2
built-in source types: file fcd rtl rtl_tcp uhd bladerf rfspace 
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes

FATAL: RuntimeError: 
Please update the firmware and FPGA images for your device.
See the application notes for USRP2/N-Series for instructions.
Expected FPGA compatibility number 11, but got 10:
The FPGA build is not compatible with the host code build.
Could not find usrp_n210_fw.bin and usrp_n210_r4_fpga.bin in your images
path!
Please run:

 "/usr/local/lib/uhd/utils/uhd_images_downloader.py"


Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.


>>> Done

Generating: "/usr/local/share/gnuradio/examples/audio/hello_world.py"

Executing: "/usr/local/share/gnuradio/examples/audio/hello_world.py"

linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.009.000-1-g71985969

Using Volk machine: sse4_1_64_orc
gr-osmosdr v0.1.4-48-g86ad5842 (0.1.5git) gnuradio 3.7.7.2
built-in source types: file fcd rtl rtl_tcp uhd bladerf rfspace 

FATAL: No supported devices found to pick from.

Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.


>>> Done

Generating: "/usr/local/share/gnuradio/examples/audio/hello_world.py"

Generating: "/usr/local/share/gnuradio/examples/audio/hello_world.py"

Executing: "/usr/local/share/gnuradio/examples/audio/hello_world.py"

linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.009.000-1-g71985969

Using Volk machine: sse4_1_64_orc
gr-osmosdr v0.1.4-48-g86ad5842 (0.1.5git) gnuradio 3.7.7.2
built-in source types: file fcd rtl rtl_tcp uhd bladerf rfspace 
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes

FATAL: RuntimeError: 
Please update the firmware and FPGA images for your device.
See the application notes for USRP2/N-Series for instructions.
Expected FPGA compatibility number 11, but got 10:
The FPGA build is not compatible with the host code build.
Could not find usrp_n210_fw.bin and usrp_n210_r4_fpga.bin in your images
path!
Please run:

 "/usr/local/lib/uhd/utils/uhd_images_downloader.py"


Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.


>>> Done



But when I run: "/usr/local/lib/uhd/utils/uhd_images_downloader.py".

It said that

Images destination:  /usr/local/share/uhd/images
Downloading images from:
http://files.ettus.com/binaries/images/uhd-images_003.009.git-rc1.zip
Downloading images to:   /tmp/tmpqVXGpZ/uhd-images_003.009.git-rc1.zip
Downloader raised an unhandled exception: request() got an unexpected
keyword argument 'stream'
You can run this again with the '--verbose' flag to see more information
If the problem persists, please email the output to: supp...@ettus.com
-----

Could anyone tell my why? Thx.

-Kerry



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[Discuss-gnuradio] Can't Compile

[Kerry Miller]

I recently became aware of gnuradio. I run Fedora Core 5 Linux. I
downloaded the gnuradio software and got this message:

checking for fftw3f = 3.0... Package fftw3f was not found in the
pkg-config search path. Perhaps you should add the directory containing
`fftw3f.pc' to the PKG_CONFIG_PATH environment variable No package
'fftw3f' found

configure: error: Library requirements (fftw3f = 3.0) not met; consider
adjusting the PKG_CONFIG_PATH environment variable if your libraries are
in a nonstandard prefix so pkg-config can find them.


My assumption is this is a library needed by the gnuradio software. I
have done some searching of my system and the file does not appear to be
on my system. Not just where your configure can't find it.


Where do I find it? And how do I install it?


-- 
Kerry N0WIQ
My web site URL is:
http://mywebpages.comcast.net/n0wiq




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