Re: [Discuss-gnuradio] GNURadio fresh Linux installation and usrp_benchmark_usb.py error

[Fabrizio Tappero]

Hello,
I believe I am.
address@hidden:~$ id fabrizio
uid=1000(fabrizio) gid=1000(fabrizio)
groups=1000(fabrizio),4(adm),20(dialout),24(cdrom),46(plugdev),104(lpadmin),115(admin),120(sambashare),1001(usrp)

Could you please suggest what can be the most basic technique to
understand whether the whole GNU radio installation plus USRP HW is
properly functioning? Right now I am having the basicTx connected to
an oscilloscope and I am  trying to generate a simple signal with this
python code:

#!/usr/bin/python
# Title       : BasicTX.py
# Function    : Create test signal on the BasicTX / BasicHF  Daughter board
# Author      : Pascal Schiks (C) 2008 gnu/gpl
# explanation : http://www.gnuradio.eu/examples/BasicHF/BasicTx.html

from gnuradio import gr
from gnuradio import usrp
from gnuradio.wxgui import stdgui2, fftsink2

# Main Graph
class pmr_graph(stdgui2.std_top_block):

        # Constructor
        def __init__(self, frame, panel, vbox, argv):
                stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)

                tx_frequency = 7050000
                usrp_tx_rate = 128000000
                usrp_tx_interpolation = 400
                tx_side = 1
                tx_dev = 1

                # Transmitter
                usrp_tx_sample_rate = usrp_tx_rate / usrp_tx_interpolation
                usrp_tx = usrp.sink_c(which=0, 
interp_rate=usrp_tx_interpolation)
                mux = usrp.determine_tx_mux_value(usrp_tx,(tx_side,tx_dev))
                usrp_tx.set_mux(mux)

                usrp_tx_subdev = usrp.selected_subdev(usrp_tx,(tx_side,tx_dev))
                usrp_tx.tune(0,usrp_tx_subdev, tx_frequency)

                # rf
                rf = gr.sig_source_c(usrp_tx_sample_rate, 
gr.GR_SIN_WAVE,500,16000, 0)

                # Connect all
                self.connect(rf, usrp_tx)

# Main caller program
if __name__ == '__main__':
        aplication = stdgui2.stdapp(pmr_graph,"BasicTX")
        aplication.MainLoop()


This is the error I get:

address@hidden:~/GNURadio/tmp$ ./BasicTX.py
usrp: failed to find usrp[0]
Traceback (most recent call last):
  File "./BasicTX.py", line 41, in <module>
    aplication = stdgui2.stdapp(pmr_graph,"BasicTX")
  File "/usr/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py",
line 36, in __init__
    wx.App.__init__ (self, redirect=False)
  File "/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 7978, in __init__
    self._BootstrapApp()
  File "/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 7552, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py",
line 39, in OnInit
    frame = stdframe (self.top_block_maker, self.title, self._nstatus)
  File "/usr/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py",
line 60, in __init__
    self.panel = stdpanel (self, self, top_block_maker)
  File "/usr/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py",
line 81, in __init__
    self.top_block = top_block_maker (frame, self, vbox, sys.argv)
  File "./BasicTX.py", line 26, in __init__
    usrp_tx = usrp.sink_c(which=0, interp_rate=usrp_tx_interpolation)
  File "/usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py",
line 2412, in sink_c
    return _usrp_swig.sink_c(*args, **kwargs)
RuntimeError: can't open usrp


Here is what I have noticed:
1) the green led in the USRP is still blinking fast => proper firmware
is no properly uploaded. In fact the ID of the USB port is still the
generic one.
2) Command ls -lR /dev/bus/usb | grep usrp does not work anymore
3) unlike what suggested in GNU Radio website installation
(http://gnuradio.org/redmine/wiki/1/DebianPackages), the command
usrper seems to be missing in the ubuntu installation (that you get
using deb http://gnuradio.org/ubuntu stable main)
4) I tried the command "lsusrp" nd the result is:

usrp_open_interface:usb_set_alt_interface: failed
could not set alt intf 0/0: Connection timed out
open_nth_cmd_interface: open_cmd_interface failed
usrp: failed to load firmware /usr/share/usrp/rev4/std.ihx.
usrp: failed to find usrp[1]
usrp: failed to find usrp[2]
usrp: failed to find usrp[3]
usrp: failed to find usrp[4]
usrp: failed to find usrp[5]
usrp: failed to find usrp[6]
usrp: failed to find usrp[7]


I see to understand that the problem is in the USB connection. Any
suggestion on how to fix it? I am a little lost ...

Thank you in advance
Fabrizio



On Wed, Feb 17, 2010 at 9:27 PM, Eric Blossom <address@hidden> wrote:
> On Wed, Feb 17, 2010 at 10:04:47AM +0100, Fabrizio Tappero wrote:
>> Hello,
>> I am new in the GNU Radio community and I am looking for  some help to
>> get started.
>>
>> I have installed Linux Ubuntu 9.10 (Karmic Koala) as Virtual Box host
>> in OS X 10.5.8.
>> following the "Getting Started" indications from:
>> http://gnuradio.org/redmine/wiki/gnuradio/UbuntuInstall
>>
>> I successfully installed GNURadio 3.2.2 from the binary of
>> deb http://gnuradio.org/ubuntu stable main
>>
>> by issuing ls -lR /dev/bus/usb | grep usrp I get:
>> crw-rw---- 1 root usrp 189, 2 2010-02-17 09:40 003
>>
>> Which might mean that all went well. However following up the Ubuntu
>> Install indications in
>> http://gnuradio.org/redmine/wiki/gnuradio/UbuntuInstall
>>
>> if I do:
>>
>> cd /usr/share/gnuradio/examples/python/usrp
>> ./usrp_benchmark_usb.py
>>
>> I unfortunately get this:
>> Testing 2MB/sec... usrp: failed to find usrp[0]
>
> Are you in group usrp?
>
> (Use the id or groups command to check.)
>
> Eric
>