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Re: [Discuss-gnuradio] Regarding programming the fpga

From: Brian Padalino
Subject: Re: [Discuss-gnuradio] Regarding programming the fpga
Date: Fri, 2 Mar 2007 10:26:56 -0500

On 3/2/07, Kuntal Majumdar <address@hidden> wrote:

First of all, thanks a lot Eric for  last  piece of advice, it helped a lot.

But  it still did not clarify me completely.  I am a complete novice to the
USRP, having got it a few days back. Ok, continuing with my last topic,  can
you please tell me how do I program the fpga specifically as a counter? I
mean, I just wanted to know the steps involved in the process, like
generating the .rbf files. I am currently working on Quartus II Web Edition

Can you give a hint as to what exactly you are trying to accomplish
with your USRP setup?  Unless you are already skilled with Verilog and
FPGA's, it would seem like you have a serious potential to break your

The majority of your questions are related to how to run Quartus II
and the Altera website does a pretty good job documenting how that is

Upon doing this, how can I read the data being generated by the fpga  and
display it in the time domain. Also, how do I do the pin assignment for the
Clarification of these basic doubts would do a world of good to my project.

To look at the data being generated by the FPGA, all you must do is
look at the interface connecting the FPGA to the AD9862 to a logic
analyzer, import it into your favorite graphing software, and there is
your time domain representation of your interpolated data before it
goes through the AD9862.  I wouldn't recommend doing something along
those lines.

In fact, if you want to just see what would happen - I recommend you
start out with a simulation.  I believe you an download ModelSim from
the Altera website for free and simulate the entire FPGA.  I believe
Matt wrote a testbench for the top level that you can figure out.

Thanks a lot.

Kuntal Majumdar


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