[Discuss-gnuradio] firmware problem causing problem with find_usrps?

[rahul]

Hi,

I am trying to get USRP2 with RFX2400 daughterboard working on Ubuntu  
9.10 (karmic). I have followed the instructions here  
(http://gnuradio.org/redmine/wiki/1/UbuntuInstall).

I installed the firmware and FPGA code on the SD card from  
http://code.ettus.com/redmine/ettus/projects/public/wiki/U2binaries. I  
specifically used the "Raw Ethernet" FPGA image (rel-20100603) and the  
"Raw Ethernet, No WBX or XCVR" Firmware image (Jun 08, 2010).

When I power up the USRP2, all the lights first glow, followed by only  
D and F staying lit. The green light on the ethernet is also lit.  
However, find_usrps returns with "No USRP2 found".

I ran it with wireshark. The command does send a broadcast ping packet  
from the machine but receives no response. The orange light briefly  
flashes at the time the packet is sent, both on the PC and on the USRP.

I tried the command with both the ethernet cards on the machine after  
running ethtool to ensure that the problem might not be due to some  
autonegotiation settings etc. On one of the cards, it says the command  
is not supported, but on the other, it says "rx unmodified, ignoring"  
and "no pause parameters changed, aborting".

I have tried the command with two different USRPs to try and eliminate  
the possibility that it might be a USRP issue too.

In summary, I have tried all combos of 2 different USRP2s with 2  
different ethernet cards with and without the daughter card connected.  
But find_usrps does not work in any of the combos.

At this point, I am not sure what to do. Maybe the problem is a  
firmware/FPGA mismatch with the installed gnuradio software, but I am  
not sure, and I don't know what versions to use if that is indeed the  
problem.

(The sketch of my problem seems similar to the one outlined by another  
person here:
http://www.mail-archive.com/address@hidden/msg24002.html
except that I am _not_ using the WBX daughterboard. I also tried all  
the above with and without my RFX2400 daughterboard connected in case  
the problem was with the RFX2400).

Any suggestions about how to fix the problem?

Thanks,
Rahul


(re-sent from 9 pm, 6/30)