How to use CMSIS-DSP with STM32G431 in Keil compiler? Getting compiler error

[BTrem.1]

I want to use a CMSIS-DSP FIR function in my code and get a compile error:

compiling phase_det.c...
../Drivers/CMSIS/Include/core_cm4.h(81): error:  #35: #error directive: "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
        #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
..\Src\phase_det.c: 0 warnings, 1 error

In Keil I used the 'Manage Runtime Environment ' to add CMSIS-DSP Library. In my source code file I haven't yet added the FIR, but I did add the include "arm_math.h".

What does the above error mean? The STM32G431 does have an FPU as far as I know (Ref Manual). Anyway, I want to use fixed point FIR.

What steps do I need to take to properly install the CMSIS-DSP Library?

[Igor Cesko]

Hi

BTrem.1 ,

This is similar task as this :

https://community.st.com/s/question/0D50X00009Xkdut/how-to-enable-fpu-in-stm32f7

Regards

Igor

[Andrew Neil]

https://community.st.com/s/question/0D53W00000BL3mXSAT/error-compiler-generates-fpu-instructions-for-a-device-without-an-fpu-check-fpupresent

[Andrew Neil · Accepted solution]

Did you post this on the Keil forum 2 months ago?

https://community.arm.com/developer/tools-software/tools/f/keil-forum/48498/how-to-use-cmsis-dsp-library-on-stm32g431--getting-compile-error

EDIT

Ah - the OP here is 2 months old, too: @Igor Cesko​  has just woken it up!

[BTrem.1]

Yes that's me. Problem resolved with order of #includes.

[Andrew Neil]

Then please update your Keil thread, and mark the solution there.

Also choose 'Best Answer' here: