Re: [Discuss-gnuradio] installing GR 3.5.2 on FreeBSD

[Marcus D. Leech]

On 01/17/2012 12:23 PM, address@hidden wrote:
>   Not too relavant as long as things work. I think my Ubuntu build is doing
> the same things since I often have to execute a program twice after moving
> the USRP1 from the other machine.
>
> That's an interesting observation that I'll have to see if I can reproduce on 
> my Fedora machines.  May be that the FX2 gets all chummy with the USB bus its 
> connected to, and when you just pull the USB plug without actually 
> power-cycling the USRP1, it can't cope.
Just did that test.  Latest Gnu Radio + UHD, two different Fedora 
16-64bit machines, two different mobo (and USB controller) types, CPUs, etc.

Plugged just-powered-up USRP1 into one machine, did a:

uhd_fft.py --args type=usrp1            on one machine.  It loaded 
firmware and FPGA, and then brought up the app.

Unplugged it, plugged it into second machine, ran:

uhd_fft.py --args type=usrp1            it came up without re-loading 
either firmware or FPGA.

Plugged it back into the first machine--ran:

uhd_fft.py --args type=usrp1            it came up without re-loading 
firmware or FPGA.



So, the way it works is that it compares the hash on the device to the 
hash contained in the appropriate .ihx/.rbf file on the host computer.
  If they differ, it reloads.  I wonder if the hashes of the .ihx/.rbf 
files differ between your two machines?

--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org