Kristoff,
Check out the official unofficial docs on the AM335x PRU here:
https://github.com/beagleboard/am335x_pru_package
I still have yet to play with the PRU to see how useful it really is,
though I do think it could be used to stream data at a known sampling rate
in & out of the chip.
73
Chris KD2BMH
On Thu, Apr 25, 2013 at 9:22 AM, Kristoff Bonne <krist...@skypro.be> wrote:
> Bruce,
>
>
>
>
> On 23-04-13 22:05, Bruce Perens wrote:
> > On 4/23/2013 12:54 PM, Curt, WE7U wrote:
> >> On Thu, 18 Apr 2013, Kristoff Bonne wrote:
> >>
> >> Now there's a BeagleBone for $45 too. I haven't looked at the specs to
> see whether it has floating point, but maybe another possibility?
> >>
> >> 1GHz Cortex-A8, 2GB on-board flash, microSD, microHDMI, ethernet, $45:
> >>
> >> http://goo.gl/SsqE6
> > It's a Sitara, related to the one in our AM335x starter kit which we'll
> > be showing at Dayton, except that the starter kit has a touchscreen,
> > bluetooth, and wifi. I think the BeagleBone Black has 4 processors on
> > chip: a Cortex A8 (which I think does have floating point), C7 DSP (OK
> > if you want to invest the time), two PRUs. A PRU is very simple scalar
> > in-order 32 bit processor with 4K program RAM and the ability to access
> > all of the on-chip peripherals and to share a pair of mailbox registers
> > and some RAM with the main processor. It does the real-time and
> > sleep-mode jobs more efficiently than the main processor.
> This kind-of makes me think of TI's OMAP soc devices that have one (or
> more) cortex-A CPUs + an additional cortex-M for "slow stuff".
>
>
> Just wondering, will it actually be able to access these additional
> processors?
>
> I have a pandaboard which is OMAP4430 based. That chip also has an
> additional DSP core and a GPU.
>
> However, I never really found a good document that describes how to
> actually use the. I read that the DSP core had to be addresses via some
> special API, that was about it.
>
>
> So, will we be able to use these additional cores?
> I would be interested to know how coding this kind of enviroment really
> is done.
>
>
> 73
> Kristoff - ON1ARF
>
>
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