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Have to agree about the arm stuff...<br>
just found a nice thing from freescale -
<a class="moz-txt-link-freetext" href="http://www.freescale.com/products/arm-processors/kinetis-cortex-m/k-series/k2x-usb-mcus/freescale-freedom-development-platform-for-kinetis-k22-mcus:FRDM-K22F">http://www.freescale.com/products/arm-processors/kinetis-cortex-m/k-series/k2x-usb-mcus/freescale-freedom-development-platform-for-kinetis-k22-mcus:FRDM-K22F</a><br>
<br>
£19 for an eval board with debugger/programmer and 100Mhz ARM with
floating point.<br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 20/09/2015 06:02, Terry Shultz
wrote:<br>
</div>
<blockquote
cite="mid:FCA14584-DB87-4553-9802-F80CECD1B17F@earthlink.net"
type="cite">
<meta http-equiv="Context-Type" content="text/html;
charset=us-ascii">
Hi Guys,
<div class=""><br class="">
</div>
<div class="">The ARM Cortex M series are getting a lot of new
designs in the embedded space.</div>
<div class=""><br class="">
</div>
<div class="">Pretty cheap, tools aplenty, and plenty of
inexpensive boards and projects. Having been a DSP 56k
programmer at Motorola/Freescale for about 28 years,</div>
<div class="">I find it fun to be able to use a C compiler and
quit programming in assembly all the time.</div>
<div class=""><br class="">
</div>
<div class="">I have programmed the z-80 at E-Mu, 6808 and 68k at
PPG and 6805, 6811, 680x0 and now ARM A and M series, I prefer
working with the Cortex M4 and M0 for new audio</div>
<div class="">projects. Arduino and Beagleboard are good places to
get your chops and tune up.</div>
<div class=""><br class="">
</div>
<div class="">Proprietary devices are becoming the dinosaurs. The
Coldfire devices were actually quite good but doomed when ARM
launched Arm 9 and Arm 11 then the A series.</div>
<div class=""><br class="">
</div>
<div class="">Try out the ST, NXP, Freescale Cortex M devices and
see if you can get cooking quickly. All have a wide range of
cheap platforms to play with.</div>
<div class=""><br class="">
</div>
<div class="">best always,</div>
<div class=""><br class="">
</div>
<div class="">Terry Shultz<br class="">
<div>
<blockquote type="cite" class="">
<div class="">On Sep 19, 2015, at 4:24 PM, Vinicius Brazil
<<a moz-do-not-send="true"
href="mailto:brazil.v@gmail.com" class="">brazil.v@gmail.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div dir="ltr" class="">I also ever use my own custom
boards.
<div class=""><br class="">
</div>
<div class="">Vincius</div>
</div>
<div class="gmail_extra"><br class="">
<div class="gmail_quote">On Sat, Sep 19, 2015 at 7:59
PM, <span dir="ltr" class=""><<a
moz-do-not-send="true"
href="mailto:rburnett@richieburnett.co.uk"
target="_blank" class=""><a class="moz-txt-link-abbreviated" href="mailto:rburnett@richieburnett.co.uk">rburnett@richieburnett.co.uk</a></a>></span>
wrote:<br class="">
<blockquote class="gmail_quote">I started using dev
boards for PICs about 20 years ago for industrial
projects, but these days I usually just go straight
to a first hash of the intended hardware...<br
class="">
<br class="">
When you're just starting out it's nice to have a
development board that guarantees the correct power
supply, clock and reset signals are presented to the
processor and a convenient method of programming, so
you don't have to worry about these things. It also
often provides a few other built-in features too
like some switches, some LEDs, pots, an LCD, RS-232
serial port, CAN port, USB etc. However, I quickly
realised that for most of the things I was
developing I didn't use half of the things on the
dev boards, and/or the quality of the Microchip dev
boards was actually quite poor.<br class="">
<br class="">
For instance Microchip's dsPICDem Dev Board only has
a crappy 8-bit 8kHz CODEC on board which is fine for
telecoms quality speech but completely useless for
pro-audio applications, and doesn't have proper
analogue and digital ground-planes either. It also
doesn't have MIDI in/out, uses a different LCD to
the industry standard Hitachi alphanumeric standard,
etc, and has really crappy thumbwheel "preset" pots
for the analogue inputs that only last for about 10
turns before wearing out! For these reason I
usually make my own "dev Board" with just the
features I want on it to help me develop whatever
I'm working on at the time.<br class="">
<br class="">
There's a lot to be said for knocking out the first
version of hardware as early as you can, then you
find out about potential hardware problems and
deficiencies as early as possible. Ground loops,
unwanted noises, LCD glitches, switch bounces,
etc... Leaving more time to thing about and
implement solutions.<br class="">
<br class="">
-Richie,
<div class="HOEnZb">
<div class="h5"><br class="">
<br class="">
On 2015-09-19 22:46, Michael Zacherl wrote:<br
class="">
<blockquote class="gmail_quote">
I got curious:<br class="">
did you people start with a typical dev-board
of PIC/AVR/STM32/... ?<br class="">
m.<br class="">
<br class="">
On 19.Sep 2015, at 21:28 , Richie Burnett <<a
moz-do-not-send="true"
href="mailto:rburnett@richieburnett.co.uk"
target="_blank" class=""><a class="moz-txt-link-abbreviated" href="mailto:rburnett@richieburnett.co.uk">rburnett@richieburnett.co.uk</a></a>>
wrote:<br class="">
<br class="">
<blockquote class="gmail_quote">
No probs here either.<br class="">
<br class="">
-Richie,<br class="">
<br class="">
---- Pete Hartman wrote ----<br class="">
<br class="">
<blockquote class="gmail_quote">
On Sat, Sep 19, 2015 at 4:43 AM, Gordonjcp
<<a moz-do-not-send="true"
href="mailto:gordonjcp@gjcp.net"
target="_blank" class="">gordonjcp@gjcp.net</a>>
wrote:<br class="">
<br class="">
On Fri, Sep 18, 2015 at 10:40:37PM +0100,
Tom Wiltshire wrote:<br class="">
<blockquote class="gmail_quote">
I'd probably have to agree. TL07x
op-amps would be my most used IC. Not
very glamorous, but they're the glue
that holds a million audio circuits
together.<br class="">
<br class="">
Aside from that, PIC uPs for digital,
and SSM2164/V2164 for analog.<br
class="">
</blockquote>
<br class="">
I've never liked PICs. They're slow,
expensive and very hard to develop for,
thanks to the sheer lack of support - and
last time I looked you had to pay extra
for surface-mount!<br class="">
<br class="">
I used AVR for a bit but I'm moving over
to STM32 - ridiculously cheap and
ridiculously fast.<br class="">
<br class="">
This must be a personal taste thing, as I
have no problems at all programming with
PICs. The documentation is very good, and
there are lots of examples to get over the
most difficult part which is how to set
the various switches (in AVR world the
equivalent is the "fuses"). I've actually
had more frustration figuring out how to
set fuses, to be honest. I haven't played
with the STM32s, I'll certainly have to
give that a try.<br class="">
</blockquote>
</blockquote>
<br class="">
--<br class="">
<a moz-do-not-send="true"
href="http://mz.klingt.org/"
rel="noreferrer" target="_blank" class="">http://mz.klingt.org</a><br
class="">
<br class="">
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