For now I'd say there are two main approaches that can be taken for DSP
development on the omap/davinci ... at least to the best of my knowledge.
There is the DSPLink approach and the Codec Engine approach. DSPLink provides
the barebones mechanisms to enable inter-processor communication, setup, and
data exchange. I've steered away from Codec Engine because it seems more
complicated and because from what I gather it's targeted more for situations
where you might purchase a codec and only have access to the binary and you
would need a mechanism to select and run between multiple codecs that might be
available and for that Codec Engine would provide a framework to handle this
situation.
If you're taking the DSPLink approach then the following are the set of tools
you would need:
1- TI Code Generation Tools (CGT) C6000
the DSP Compiler
2- TI DSPLink
to handle inter processor communication
3- TI Codec Engine
even if you're not using it you have install it because of dependency
4- TI DSP/BIOS
DSP RTOS
5- TI Local Power Manager (LPM)
The OMAP processor has a bug where you have to reset the DSP if you plan on
loading different executables and the LPM modules provides an executable to do
just that
You would need to setup the Makefiles for DSPLink before using it to point it
to your kernel directory, compile tools, ... etc
al
-----Original Message-----
From: Alexander Chemeris <[email protected]>
To: Philip Balister <[email protected]>
Cc: discuss-gnuradio <[email protected]>
Sent: Fri, May 6, 2011 4:52 pm
Subject: Re: [Discuss-gnuradio] Questions about E100
On Fri, May 6, 2011 at 16:29, Philip Balister <[email protected]> wrote:
On 05/05/2011 05:42 PM, Scott Johnston wrote:
>
> Hi,
>
> Has anybody out there done any development on the DSP? What tools are
> available to program it? I have used TI's code composer in the past to
> program DSPs, is there something comparable to that included with E100,
> or is it easy to get it? What I would like to be able to do is obtain
> common C libraries and compile C code to run on the DSP.
You can build an image with dsp support by following the notes at:
http://ettus-apps.sourcerepo.com/redmine/ettus/projects/usrpe1xx/wiki/Install_OpenEmbedded
I'll post a copy of the image next week.
To run the demos, you'll need to modify the kernel boot args to create a
memory hole. This is (barely) documented on the interwebs. Next time I
update u-boot, I'll include an extra variable to make it easier to create
the memory hole.
On a related question - have anyone tried SysLink on Gumstix/E100?
I'm just getting into this staff and trying to understand what tools
re the best to use for DSP on OMAP/DaVinci/Integra.
--
egards,
lexander Chemeris.
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