Add CMSIS DSP support as built-in library

[fpistm]

To use it, add:
#include <CMSIS_DSP.h>

arm_math.h is then automatically include.

Fixes #682

Wiki:
https://github.com/stm32duino/wiki/wiki/API#cmsis-dsp

[superpanza]

Hi @fpistm,
i've just tested your fix but something does not work. CMSIS_DSP.h is not found.
Tell me if i can help you some way

[fpistm]

How did you test this PR?
With the git repository and fetch the PR?

[superpanza]

How did you test this PR?
With the git repository and fetch the PR?

yes i'm testing this PR. Download it and put in place

[fpistm]

On top of the repo or of the 1.7.0?
Could you describe exactly how you setup with this PR?

[superpanza]

On top of the repo or of the 1.7.0?
Could you describe exactly how you setup with this PR?

I had installed stm32duino via arduino IDE.
The board manager url used is: https://github.com/stm32duino/BoardManagerFiles/raw/master/STM32/package_stm_index.json
Then from board manager interface i had installed the stm32 cores v.1.7.0.
Now i've downloaded the PR, deleted all the contents of packages/STM32/hardware/stm32/1.7.0/ and paste the new version.

[fpistm]

Well in that case I don't know why it does not work.
Could you provide the full log with all verbose and warnings, please.

[superpanza]

Well in that case I don't know why it does not work.
Could you provide the full log with all verbose and warnings, please.

Ouch my bad!! :-( wrong board selected. Code compiled succesfully! i'm gonna test the FFT in minutes

[fpistm]

Ouch my bad!! :-( wrong board selected. Code compiled succesfully! i'm gonna test the FFT in minutes

So is it ok now?
I wonder if I should add the math_helper provided by arm in the DSP library examples.
I think no as it has to be included manually if needed like in the example.

[yglim]

Hi. all

Check compiler.arm.cmsis.c.flags into the platform.txt
the origin is below.
compiler.arm.cmsis.c.flags="-I{runtime.tools.CMSIS-5.5.1.path}/CMSIS/Core/Include/" "-I{build.system.path}/Drivers/CMSIS/Device/ST/{build.series}/Include/" "-I{build.system.path}/Drivers/CMSIS/Device/ST/{build.series}/Source/Templates/gcc/" "

so I add DSP related location.

compiler.arm.cmsis.c.flags="-I{runtime.tools.CMSIS-5.5.1.path}/CMSIS/Core/Include/" "-I{build.system.path}/Drivers/CMSIS/Device/ST/{build.series}/Include/" "-I{build.system.path}/Drivers/CMSIS/Device/ST/{build.series}/Source/Templates/gcc/"
"-I{runtime.tools.CMSIS-5.5.1.path}/CMSIS/DSP/Include"

stm32duino 1.7.0 noew I'm using.

Happy coding

[fpistm]

@yglim
This will be released with the 1.8.0