Re: [Discuss-gnuradio] dbsrx question

[David Caruth]

Well, I had the right i2c address, but was calling the wrong function when initializing the dbs_rx board.  I called the c++ equivalent of the following Python code:

 

self._u._write_io(self._which,0x0001,0x0001)

 

instead of

 

self._u._write_oe(self._which,0x0001,0x0001)

 

 

So I typoed and put "io" instead of "oe" which resulted in the bad bad behavior.  Duh.  Sorry for the false alarm, and thanks Eric and Matt for your help!

 

Eric Blossom <address@hidden> wrote:

> On Sun, Oct 22, 2006 at 10:31:31PM -0700, David Caruth wrote:
> > Hi All.
> > 
>
> > I have searched this forum for i2c errors and dbs problems, but have
> > not found anything like
>  my problem. I'm sure I have the correct i2c
> > address set as well. Any suggestions? Please don't suggest that I
> > just use the python script... :)
>
> My guess is that you are using the wrong i2c addresses. Many data
> sheets conflate the 7-bit i2c address with the 8-bit byte that
> contains the 7-bit i2c address in the top 7-bits and r/w bit in the
> low bit of that byte. When our code is talking about an i2c address,
> we _really_ mean i2c address, not the i2c address shifted one way or
> the other.
>
> Eric

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