Re: [Freetel-codec2] Codec2 in real time on STM32

[Don R. <don...@db...>]

That looks like really old code from before we added 700 support to the 
SM1000

Don - W7DMR

On 12/10/23 14:59, Mooneer Salem wrote:
> Hi Jan,
>
> Can you confirm which version of Codec2 that you're using? I was 
> trying to find where that code is and it doesn't appear to be in the 
> latest (https://github.com/drowe67/codec2/tree/main/src).
>
> Thanks,
>
> -Mooneer K6AQ
>
> On Sun, Dec 10, 2023 at 12:56 PM Jan Ropek <rop...@gm...> wrote:
>
>     Hi,
>     I've progressed and the Codec 2 on STM32F4 already works somehow.
>     Now I wanted to use mode 700 b/sec, but found this *#ifndef*: I
>     can see CORTEX_M4 can not be defined - I am not able to run
>     MODE_700 on STM32? Or what should I do? thank you. Jan.
>     image.png
>
>
>
>     po 20. 11. 2023 v 21:27 odesílatel david <da...@ro...> napsal:
>
>         Hi Jan,
>
>         We run Codec 2 half duplex (along with a bunch of other modem
>         and FEC
>         code) on a 180 MHz stm32 and it works just fine in real time. 
>         So your
>         expectations are quite realistic.
>
>         The build system we use for the stm32 is in
>         codec2/stm32/CMakeLists.txt, including C compiler flags (looks
>         like we
>         use -O3).  We also use -O2 and -O3 on the build system for larger
>         machines and don't have any problems.
>
>         So it's probably some sort of configuration issue on your
>         build system.
>          A good approach is to start with something that works (e.g.
>         our stm32
>         build system), then maybe move to the IDE.
>
>         - David
>
>         On Mon, 2023-11-20 at 14:21 +0100, Jan Ropek wrote:
>         > Hello,
>         >
>         > my goal was to get Codec2 (encoding and decoding) working on
>         > STM32F446 running on 180MHz. So, I created a new project for
>         Nucleo
>         > with F446RE and added Codec2 libraries to it. I compile with GCC
>         > (using STM32CubeIDE - based on Eclipse).
>         >
>         > I have GCC optimization turned off and encoding and decoding
>         works,
>         > but the problem is that encoding one 40ms frame (320 B)
>         takes about
>         > 47 ms, so I am not able to use Codec2 in real-time. So, I am
>         asking
>         > whether my requirements are unrealistic, or have I
>         implemented Codec2
>         > incorrectly?
>         >
>         > - I tried comparing CMSIS FFT and KISS FFT, it takes roughly
>         the same
>         > time.
>         >
>         > - When I turned on GCC optimization to O1 - encoding sped up
>         to about
>         > 15 ms, but during decoding, a HardFault always occurred.
>         >
>         > Can you please suggest what I might be doing wrong? Many thanks!
>         >
>         > Best regards, Jan.
>         >
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