Hi Juan,

We put on workshops for ADI processors.  The link below will take you to the
workshop slides for the Blackfin class.  You might be able to find some of
the information you need in there.

<http://www.analog.com/processors/blackfin/training/workshops/bf533_workshop
.html>
http://www.analog.com/processors/blackfin/training/workshops/bf533_workshop.
html

We are slowly moving the assembly out of the workshop as more people are
using high level language almost exclusively.  Any feedback on the need for
low level programming support (ie in assembly) on the Blackfin would be
greatly appreciated.

I still use C-callable assembly routines as a means of optimization.  I have
also used the EE-186 31bit accurate MAC as a basis for a FIR filter function
and it is very efficient (2 cycles per tap).

Best regards,

George Kadziolka

Kaztek Systems

www.kaztek.com <http://www.kaztek.com/>

  _____  

From: a...@yahoogroups.com [mailto:a...@yahoogroups.com] On Behalf Of Juan
Carlos Galvez
Sent: Friday, September 21, 2007 8:20 AM
To: ADSP
Subject: [adsp] iir coefficients

Well, now I'm a lot better, ¡the filter is working! no so good as expected
but it is a start. I took an implementation of an iir filter that comes with
the book "Embedded Signal Processing with the Micro Signal Architecture" and
modified it a little to use 32 bits samples and 32 bits coeff.

I used the 32x32 bit multiply function that comes with the library that is
lousy but, still, it's a start. Now I will have to make a precisse 32x32 bit
multiply routine like the one that is used on the EE186 application note...
still have to learn more assambler... can any one give some help on this?
does any one have a good 32 bit multypli routine? does any one knows about a
good book on blackfin assambler?

thanks a lot,

Juan Carlos Gálvez

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