[sdiy] Audio Weaver for ST Discovery boards -Free!

[Jason Tribbeck]

While there are two I2S interfaces, neither of them are fully accessible
via the I/O connectors (both use wires that are only connected to the
memories).

Shame - looked quite nice otherwise!

On Thu, 11 May 2017 at 14:51 Scott Gravenhorst <music.maker at gte.net> wrote:

>
> Ah, thanks for that.  One thing that pisses me off a bit is that it's
> still too uncommon for dev
> boards (like this one) to have an on board audio codec.  Thankfully, the
> Discovery board does.  I
> would think in these days where every product out there has a screen and
> sound that it would be
> imperative to put at least an audio codec on the board.  The advantage for
> me is that when
> developing driver code for a codec, it's comforting to know that the codec
> being placed there by
> the mfr would seem to indicate that it _should_ work and that if there's a
> problem - it's your code.
>
> I may purchase the SAM E70 board after looking at the datasheet, but I can
> see I'll have to
> jerry-rig a codec to some pins on the board - which will be SMD and having
> myopia plus presbyopia,
> that's a problem.  Perhaps there's a plug in board... (not with my luck)
> I've not yet had luck
> coding I2S, but I can sharpen my chops on the Discovery board.  At least
> the E70 board isn't
> expensive at about $30usa.  I'll need to determine what the difference is
> between S70 and E70.  The
> S70 chip is the one used for the Tsunami Super WAV Trigger board.
>
> paula at synth.net wrote:
> >Scott,
> >
> >  You should take a look at this eval board for the SAM E70 -
> >
> >
> https://www.digikey.co.uk/product-detail/en/microchip-technology/ATSAME70-XPLD/ATSAME70-XPLD-ND/5725743
>
> >
> >  has a nice fast M7 CPU and a big chunk of RAM too ;)
> >
> >Paula
> >
> >On 2017-05-11 12:30, Scott Gravenhorst wrote:
> >> Well, to be honest, I started looking at Microchip's (Atmel)
> >> ATSAMS70N20 which includes
> >> almost identical internal features.  It has a bit more internal RAM,
> >> but the datasheet
> >> says it runs up to 300 MHz.  The ARM on the 32F746GDISCOVERY board
> >> runs up to 216 MHz.
> >> However, I've not been able to find a dev board for the ATSAMS70N20.
> >>
> >> So I have to say that this Discovery board is my second choice and
> >> will be a super-major
> >> step up from a dsPIC.  As for performance, I'll just have to see how
> >> much synth I can
> >> cram into it.  One interesting thing about both of the ARM ICs is that
> >> they have a 2
> >> channel 12 bit DAC that runs up to 1 MHz sample rate which might be
> >> fun with naive
> >> waveforms since the Nyquist limit is 500 kHz.  I've worked with a 12
> >> bit DAC at that
> >> sample rate using an FPGA and I noticed no alias problems with naive
> >> waveforms.
> >> However, such a high sample rate will limit voice and feature count.
> >>
> >> Anyway, I'll post about it once I've got a good feel for what it can
> >> do.  All I have
> >> right now is a bunch of PDF files.
> >>
> >> Michael Zacherl <sdiy-mz01 at blauwurf.info> wrote:
> >>>
> >>> On 11.May 2017, at 3:44 , Scott Gravenhorst <music.maker at gte.net>
> >>> wrote:
> >>>
> >>>> I got some birthday money and bought this: 32F746GDISCOVERY
> >>>> =
> >>>
> >>>> It looks pretty nice.  I will try Audio Weaver when the board comes
> >>>> here.
> >>>
> >>> at this price ($49 really?) it looks like a steal!
> >>> How you=92d rank the cpu performance-wise?
> >>> Additional I/O via SPI? (still thinking dc-coupled audio rate A/D D/A)
> >>>
> >>> --
> >>> http://mz.klingt.org
> >>>
> >>>
> >>> _______________________________________________
> >>> Synth-diy mailing list
> >>> Synth-diy at synth-diy.org
> >>> http://synth-diy.org/mailman/listinfo/synth-diy
> >>>
> >>
> >> -- ScottG
> >> ________________________________________________________________________
> >> -- Scott Gravenhorst
> >> -- http://scott.joviansynth.com/
> >> -- When the going gets tough, the tough use the command line.
> >> -- Matt 21:22
> >>
> >> _______________________________________________
> >> Synth-diy mailing list
> >> Synth-diy at synth-diy.org
> >> http://synth-diy.org/mailman/listinfo/synth-diy
> >
>
> -- ScottG
> ________________________________________________________________________
> -- Scott Gravenhorst
> -- http://scott.joviansynth.com/
> -- When the going gets tough, the tough use the command line.
> -- Matt 21:22
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20170511/37b41299/attachment.htm>