[Discuss-gnuradio] alias help

[btjoel]

Hello,

I have a quick question/favor to ask fellow GNU Radio-ers.  I am trying to
allow aliasing into my USRP2 system that is equipped with an RFX-2400. 
Therefore, I am trying to get the FPGA code from gr-bluetooth running on my
USRP2 but am running into some trouble.  Using u2_flash_tool, I am able to
flash the SD card with the desired gr-bluetooth FPGA code
(u2_rev3_alias.bin).  But, I can never see the USRP2 via find_usrps or
usrp2_probe.  I am currently running Ubuntu 10.04 (Lucid Lynx) with the
binary package installation, and have also tried Ubuntu 9.04 (Jaunty
Jackelope) with the same results.  I would like to test the FPGA code with
earlier versions of GNU Radio (e.g. 3.2), but I do not really trust myself
to 'downgrade' without messing all sorts of things up (I'm a bit of a linux
noob).  So, I'm wondering if someone with an earlier install (or an easy
way/method to downgrade) could possibly tell me if the aliasing FPGA code
works with earlier versions of GNU Radio (or even if it works with the
binary package install and I am just doing something really silly).  So, I
would greatly appreciate it if anyone familiar with flashing the SD card
could grab the u2_rev3_alias.bin FPGA file from:

http://sourceforge.net/projects/gr-bluetooth/files/

After extracting gr-bluetooth-0.4.tar.gz, the desired file will be in the
bin directory:
/gr-bluetooth-0.4/bin/u2_rev3_alias.bin

Then the following flash command can be used:
sudo u2_flash_tool --dev=/dev/XXXX -t fpga -w u2_rev3_alias.bin
(of course being very careful to properly select XXXX - mine is sdb)
(also, I would first copy the existing fpga file to hard disk with the -r
option)

Finally running find_usrps or usrp2_probe would tell whether or not the
USRP2 is actually seen.

Thanks a ton to anyone willing to help me out on this:)
Cheers,
Joel


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