Usrp2_fft segmentation fault


#1

Hello,

I am looking for some advice regarding the use of the USRP2 and I hope
that you can help me. Please forgive my inexperience, it is very short
that I have been working on this area. The USRP2 I am using has an RFX
2400 daughterboard, the environment is Suse 10.3 and these are the
steps I have followed:

1/ Installed boost library 1.36 as explained in the readme and added
it to LD_LIBRARY_PATH

2/ Installed Microblaze compiler as explained in the wiki and added it
to PATH

3/ Installed the gnuradio trunk version 9831
./bootstrap
./configure --with-boost=$BOOST_PREFIX
make
make check (all test passed)
make install

4/ USRP2 is found (LEDS D and F are on)
~/gnuradio-usrp2-rev9831/usrp2/host # find_usrps
00:50:c2:85:30:18 hw_rev = 0x0300

5/Then I try to run the usrp2_fft.py and get
~/gnuradio-usrp2-rev9831/gr-utils/src/python # python usrp2_fft.py -f 2.
4G
usrp2: mismatched command reply length (expected: 60 got: 4). op =
OP_EOP
Traceback (most recent call last):
File “usrp2_fft.py”, line 268, in
main ()
File “usrp2_fft.py”, line 264, in main
app = stdgui2.stdapp(app_top_block, “USRP2 FFT”, nstatus=1)
File
“/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py”, line
36, in init
wx.App.init (self, redirect=False)
File
“/usr/local/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py”,
line 7913, in init
self._BootstrapApp()
File
“/usr/local/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py”,
line 7487, in _BootstrapApp
return core.PyApp__BootstrapApp(*args, **kwargs)
File
“/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py”,
line 39, in OnInit
frame = stdframe (self.top_block_maker, self.title, self._nstatus)
File
“/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py”,
line 60, in init
self.panel = stdpanel (self, self, top_block_maker)
File
“/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py”,
line 81, in init
self.top_block = top_block_maker (frame, self, vbox, sys.argv)
File “usrp2_fft.py”, line 68, in init
self.u = usrp2.source_32fc(options.interface, options.mac_addr)
File “/usr/local/lib/python2.5/site-packages/gnuradio/usrp2.py”,
line 305, in source_32fc
return _usrp2.source_32fc(*args)
RuntimeError: Unable to retrieve daughterboard info
Segmentation fault

The same happens with any of the other codes for the usrp2.

I would be very gratefull if you could come up with a solution.
Best regards

Natalia Olano


#2

On Fri, 2008-10-24 at 10:39 +0200, Natalia Olano wrote:

RuntimeError: Unable to retrieve daughterboard info

There has been some recent changes in the USRP2 host and firmware code
which appear to be incompatible. I will be working on this tonight and
over the weekend.

-Johnathan


#3

On Fri, Oct 24, 2008 at 10:39:26AM +0200, Natalia Olano wrote:

2/ Installed Microblaze compiler as explained in the wiki and added it to PATH

3/ Installed the gnuradio trunk version 9831
./bootstrap
./configure --with-boost=$BOOST_PREFIX
make
make check (all test passed)
make install

You need to install the current usrp2 firmware (what you just built)
onto the SD card. usrp2/firmware/apps/txrx.bin is the file that
should be installed into the s/w slot of the SD card.
See the USRP2 FAQs. I suspect the info’s in there somewhere…

Eric