Re: [Discuss-gnuradio] FPGA .rbf file

[Michael P Buettner]

> On Tue, May 08, 2007 at 10:59:33AM -0400, Steven Clark wrote:
> > Hi all-
> > 
> > I noticed that both the usrp.source and usrp.sink blocks have the ability to
> > specify the .rbf bit file for the FPGA.
> > 
> > Does that mean that in the following:
> > 
> > 
> > self.usrp_in = usrp.source_c (fpga_filename="file_A.rbf")
> >self.usrp_out = usrp.sink_c (fpga_filename="file_B.rbf")
> >
> >
> >Only file_B has any effect? When does the file get loaded?

> Last one wins.  It gets loaded in the constructor.

> Eric

Is this true?  I have an application that has both a usrp.source_c and a usrp.sink_c.  If 
I use the "fpga_filename" parameter for only one of those calls, the receive 
channel does not work and I see a continuous stream of 'u0s'. However, if I use specify 
the same rbf in both calls, all is well.

michael