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Re: [Discuss-gnuradio] Re: USRP Tx Question
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Re: USRP Tx Question |
Date: |
Mon, 17 Apr 2006 08:09:43 -0700 |
User-agent: |
Mutt/1.5.9i |
On Sun, Apr 16, 2006 at 08:09:39PM -0400, Elaine Garbarine wrote:
> On 4/15/06 4:32 PM, "Eric Blossom" <address@hidden> wrote:
>
> For the time being just never setting the frequency to anything other than 0
> will do so I'm going to do that in order to bypass the DUC in the AD9862. I
> just want to see if I can get some sort of transmit sync working before I
> add a DUC back into the picture (and I'll definitely need to look into
> implementing the DUC in the FPGA instead of using the one in the AD9862).
OK.
> As for the transmit sync my thought was to have the "master" USRP send a
> flag of some sort (probably by setting one of the daughterboard header pins
> high) when it was about to transmit. I would then have the slave USRP
> transmit upon seeing this flag on one of it's daughterboard pins. I'm
> thinking the best place to put these code modifications would be in
> master_control unless anyone has a better suggestion.
>
> I do have one question about altering and recompiling the FPGA code. Once I
> use the Quartus software to recompile the code do I just copy this new code
> into the correct directories in my Linux box (running GNU Radio) or is there
> something else I need to do to get the new code onto the FPGA?
Just copy the foo.rbf file to PREFIX/share/usrp/rev<N>/foo.rbf
Eric