Re: [Discuss-gnuradio] usrp_probe, failed to find usrp[0] - was working yesterday...

[jefftk]

Ah well it is working now, I restarted the computer.... yes, I tried that at
least once before posting my message : ) ... 
I hate computers....

I had followed the http://gnuradio.org/redmine/wiki/1/UbuntuInstall   for
setting up the usrp group and udev at some point, probably just before my
last restart. I think what may have happened was I did not have the usrp
group setup the first time I tried usrp_probe and was in a sudo environment,
then when I tried it later I was not in the right group.

I did not know the PYTHONPATH variable is not available across SUDO, 

Thanks Marcus.
-Jeff



Marcus D. Leech wrote:
> 
> On 10/12/2010 08:49 PM, jefftk wrote:
>> I just received a new USRP & WBX board for a research project I am
>> working
>> on. I have installed GNURadio from source from the tar package:
>> http://ftp.gnu.org/gnu/gnuradio/gnuradio-3.3.0.tar.gz, on Ubuntu 10.04,
>> amd64
>>
>> I am having problems connecting/finding the USRP:
>> running "usrp_probe" or "usrper get_hash0" result in "usrp: failed to
>> find
>> usrp[0]"
>>
>> running "sudo usrp_probe" results in "ImportError: cannot import name
>> usrp"
>> running "sudo usrper get_hash0" results in "found unconfigured usrp;
>> needs
>> firmware."
>>
>> I have seen mention that the blinking light on the motherboard is
>> indicative
>> of some state (I have not been able to locate documentation stating
>> this....can someone point me to this?) the light on my motherboard is
>> currently blinking at bout 2-3Hz, which I think is supposed to mean it
>> has
>> good firmware loaded.
>>
>> I successfully ran usrp_probe (with sudo if I recall correctly) last
>> night
>> and it successfully connected and found the wbx daughterboard.
>>
>> Other than powering down the USRP overnight I'm not sure what or if I
>> changed anything. 
>> I can use gnuradio-companion and run some basic tutorial programs that
>> don't
>> interface with the usrp.
>> I have tried reinstalling GNURadio, between versions 3.3.0 and 3.2
>> several
>> times, neither have connected to the usrp.
>>
>> other information:
>> PYTHONPATH = /usr/local/lib/python2.6/dist-packages
>> "ls -lR /dev/bus/usb | grep usrp"  =   "crw-rw---- 1 root usrp      189,
>> 4
>> 2010-10-12 20:14 005"
>>
>> at some point I noticed this, I have been unable to reproduce it though
>> "dmesg" = [ 2117.132151] usb 1-1: usbfs: USBDEVFS_CONTROL failed cmd
>> usrper
>> rqt 64 rq 1 len 0 ret -110
>>
>> Plugging in USRP usb cable: 
>> dmesg output = 
>> [14316.247647] usb 1-1: USB disconnect, address 6
>> [14326.592048] usb 1-1: new high speed USB device using ehci_hcd and
>> address
>> 7
>> [14326.725176] usb 1-1: configuration #1 chosen from 1 choice
>>
>> I'm not sure what the problem is now.. is it a configuration problem with
>> GNURadio, a problem with the USB interface/driver, or is there actually
>> an
>> issue with the USRP firmware? 
>> I'm hesitant to think it is a firmware problem, because I don't think
>> there
>> is any way I could have modified the firmware..
>>
>> Thanks for your help,
>> -Jeff
>>
>>
>>
>>
>>
>>
>>   
> Your problem is likely that you haven't put your userid in group "usrp",
> and likely haven't created group "usrp", and likely
>   haven't told udev about what group the usrp should be in when it's
> instantiated.
> 
> Check out the post-install instructions here:
> 
> http://gnuradio.org/redmine/wiki/gnuradio/FedoraInstall
> 
> Now, if you "SUDO" you can get around the permissions issue, but you'll
> have to make sure that your PYTHONPATH is available
>   across the "SUDO", which by default it isn't.  So once you're in a
> "root" environment you'll have to manually set your
>   PYTHONPATH so that the appropriate python modules can be found.
> 
> 
> 
> 
> -- 
> Marcus Leech
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
> 
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 

-- 
View this message in context: 
http://old.nabble.com/usrp_probe%2C-failed-to-find-usrp-0----was-working-yesterday...-tp29948671p29948868.html
Sent from the GnuRadio mailing list archive at Nabble.com.