similar to: Implementing opus codec on ARM cortex m3

I purchased a Code Red RDB1768v2r3 Rev B1 board. I'm trying to use the NXP provided example for the Speex codec from App Note: NXP AN11085 http://ics.nxp.com/support/documents/microcontrollers/zip/an11085.zip Does this example application run reliably on the Code Red RDB1768v2r3? Is there a modified version of Speex available that is fully functional? When

I am trying to develop a device for a disabled person and need low bitrate voice, speex looks good, however I need to find optimized M3 code and can not, searched online all over, I use Keil also if that helps. My M3 is 128kbps/64kram 72mhz, i only need to do a encode in one part and decode in another..... Please let me know if you can help this project with a link to optimized code Thanks!

Hi Tristan, well... if speed is really his problem (and looking at those 72 MHz it probably is), wouldn't Speek surpass Opus by far? I agree that Opus is way better, but it's sadly also using more resources... But yeah, Richard you should give Opus a try if possible ;) It's generally easier to use then Speex and also more feature rich. Yours sincerely, Ren? Sch?mann *From:*

The patch prevents KEIL MDK compile warnings, like:   warning:  #1035-d: single-precision operand implicitly converted to double-precision Actually ARM Cortex-M4F has only a *single precision* (float) FPU. It's suit for all platforms. See the comment at the begin of patch file. Sincerely Forrest Zhang -------------- next part -------------- Specify the floating point constant with single

Hello everyone, For a private project I would like to make a new Internet Intercom device (for my kids and me). At the moment I use a separate DSP with Ogg/Vorbis (VS1053) but I like a challenge ;-) Is a eg. ST32F10x (cortex m3) or a new ST32F40x (cortex m4) powerful enough to do encoding and decoding ? Any existing projects to learn from? Thanks for your time, Edwin van den Oetelaar

Now that there is good thumb2 support in the ARM backend, would someone please add "cortex-m3" to the "-march" list for the ARM backend. This should produce pure thumb2 only code. At some point, when the subsets are public, "cortex-m1" and "cortex-m0" should also be added. thanks, bagel

Here is a one-line patch to support the cortex-m3. For those who plan the features for ARM, the new cortex-m0 implements only a subset of the Thumb2 instructions. I still have yet to see a document that details what's in the subset. -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: arm.diff URL:

Looks OK to me, but I don't have any Cortex-M3 docs to confirm the choice of v7-A without NEON. deep On Sun, Nov 22, 2009 at 9:47 PM, Bagel <bagel99 at gmail.com> wrote: > Here is a one-line patch to support the cortex-m3. > For those who plan the features for ARM, the new cortex-m0 implements only a > subset of the Thumb2 instructions.  I still have yet to see a document that

Hi there, I'm trying to switch from GCC to llvm (clang++) for cross-compiling a firmware of mine for a stm32 (ARM cortex-m3). After looking in the documentation and a bit of googling here is what I did (in case someone else in the future is having the same problem) cd llvm git clone http://llvm.org/git/llvm.git cd llvm/tools git clone http://llvm.org/git/clang.git cd llvm/projects git

On Wed, Jul 18, 2012 at 3:52 PM, Renato Golin <rengolin at systemcall.org> wrote: > On 18 July 2012 14:33, salvatore benedetto > <salvatore.benedetto at gmail.com> wrote: >> but I still haven't figure out how to build for cortex-m3 >> >> clang -march=armv7-m -mfloat-abi=soft <something missing?> testReference.cpp -c > > -march should have done

On Wed, Jul 18, 2012 at 4:33 PM, 陳韋任 (Wei-Ren Chen) <chenwj at iis.sinica.edu.tw> wrote: > > Do you tell clang to use the right binutils for ARM not x86 host? > Not really. I'm not even sure how to do that. I thought that would have done automagically by llvm. Any readings to point me to? S.

On 18 July 2012 17:08, salvatore benedetto <salvatore.benedetto at gmail.com> wrote: > I of course own you a beer :-) Thank you very much. I will remind you of that, next year, on EuroLLVM 2013. :D > Which part of gcc I'm using with that option? > Just the libc, libgcc et all? AFAIK, it uses the name to find the tool chain, and guess all other binaries from it. So it calls

> Any suggestions? Try to specify CPU explicitly. -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

On Sun, Jul 22, 2012 at 9:42 PM, Anton Korobeynikov <anton at korobeynikov.info> wrote: >> Any suggestions? > Try to specify CPU explicitly. Already did. clang++ -ccc-gcc-name arm-none-linux-gnueabi-g++ -ccc-host-triple thumbv7m-none-gnueabi testReference.cpp -c -mcpu=cortex-m3 fatal error: error in backend: CPU: 'cortex-m3' does not support ARM mode execution! S.

> clang++ -ccc-gcc-name arm-none-linux-gnueabi-g++ -ccc-host-triple > thumbv7m-none-gnueabi testReference.cpp -c -mcpu=cortex-m3 > fatal error: error in backend: CPU: 'cortex-m3' does not support ARM > mode execution! Ok, and what's about -mthumb then? -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

On Sun, Jul 22, 2012 at 10:37 PM, Renato Golin <rengolin at systemcall.org> wrote: > On 22 July 2012 20:42, Anton Korobeynikov <anton at korobeynikov.info> wrote: >>> Any suggestions? >> Try to specify CPU explicitly. > > He shouldn't have to, but that might help. Maybe setting -march? This > is a big mess... > > I thought that v7 always assumed

On Darwin, if -march is armv7 clang's driver will assume you want thumb2 unless you also give it -mno-thumb but that is irrelevant with mcpu=cortex-m3. I agree its a mess. -Chris On Jul 22, 2012, at 4:37 PM, Renato Golin wrote: > On 22 July 2012 20:42, Anton Korobeynikov <anton at korobeynikov.info> wrote: >>> Any suggestions? >> Try to specify CPU explicitly. >

On 23 July 2012 17:03, Chris Cadwallader <ccadwallader at arxan.com> wrote: > On Darwin, if -march is armv7 clang's driver will assume you want thumb2 unless you also give it -mno-thumb but that is irrelevant with mcpu=cortex-m3. I think that Thumb2 should be the default for v7 on any system, not just Darwin. Maybe some ARM folk can comment on this... -- cheers, --renato

On Mon, Jul 23, 2012 at 8:14 PM, Renato Golin <rengolin at systemcall.org> wrote: > On 23 July 2012 17:03, Chris Cadwallader <ccadwallader at arxan.com> wrote: >> On Darwin, if -march is armv7 clang's driver will assume you want thumb2 unless you also give it -mno-thumb but that is irrelevant with mcpu=cortex-m3. > > I think that Thumb2 should be the default for v7

On Jul 24, 2012, at 1:29 PM, Renato Golin <rengolin at systemcall.org> wrote: > IIRC, it took him a week or so to do all that, and months waiting for > answers, then years waiting for more answers. It was more than just > tests, and until today I have no idea what it was... There was always > something wrong but no one could tell what, but it stopped the patch > anyway.