Hi Jan, In the Codec2 library, there are some flags that are turned on in order to get it to function on the SM1000 (which also uses a STM32F4 series MCU). You can find out more at https://github.com/drowe67/codec2/blob/main/stm32/CMakeLists.txt but the important ones are as follows:
add_definitions(-DSTM32F40_41xxx -DCORTEX_M4 -D__EMBEDDED__) Note that you'll also need to implement a few functions to (a) ensure that CMSIS gets used and (b) indicate how memory is to be allocated once __EMBEDDED__ gets set. You can just include https://github.com/drowe67/codec2/blob/main/src/codec2_math_arm.c and the codec2_*alloc/codec2_free functions from https://github.com/drowe67/codec2/blob/4f4f7304542c4c3ef49d443ae78732b0e6683a0f/stm32/src/memtools.c#L14 for that. Hope this helps! Thanks, -Mooneer K6AQ On Mon, Nov 20, 2023 at 5:24 AM Jan Ropek <ropek...@gmail.com> 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. > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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