How to add arm_cfft_q31

[leonardo]

Posted on May 08, 2017 at 00:27

I have a CubeMX generated project and need to made a FFT in Q31 format on a STM32F103RB nucleo board.

I have add this includes

#include <math.h>

#include 'arm_math.h'#include 'arm_const_structs.h'

and add a defin ition for ARM_MATH_CM3

But as soon as I use

q15_t ADC_samples[2048];

arm_cfft_q15(&arm_cfft_sR_q31_len64, ADC_samples, 0, 1);

I get this error:

arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -mfloat-abi=soft '-D__weak=__attribute__((weak))' -DARM_MATH_CM3 '-D__packed=__attribute__((__packed__))' -DUSE_HAL_DRIVER -DSTM32F103xB -I'E:/Cartel_RGB/WS_F103/01_Cartel_F103/Inc' -I'E:/Cartel_RGB/Cartel_Lib' -I'E:/Cartel_RGB/WS_F103/01_Cartel_F103/Drivers/STM32F1xx_HAL_Driver/Inc' -I'E:/Cartel_RGB/WS_F103/01_Cartel_F103/Drivers/STM32F1xx_HAL_Driver/Inc/Legacy' -I'E:/Cartel_RGB/WS_F103/01_Cartel_F103/Drivers/CMSIS/Device/ST/STM32F1xx/Include' -I'E:/Cartel_RGB/WS_F103/01_Cartel_F103/Drivers/CMSIS/Include'  -Og -g3 -Wall -fmessage-length=0 -ffunction-sections -c -fmessage-length=0 -MMD -MP -MF'Src/main.d' -MT'Src/main.o' -o 'Src/main.o' '../Src/main.c'

../Src/main.c:77:14: error: expected declaration specifiers or '...' before '&' token arm_cfft_q15(&arm_cfft_sR_q31_len64, ADC_samples, 0, 1);              ^../Src/main.c:77:38: error: expected declaration specifiers or '...' before 'ADC_samples' arm_cfft_q15(&arm_cfft_sR_q31_len64, ADC_samples, 0, 1);                                      ^../Src/main.c:77:51: error: expected declaration specifiers or '...' before numeric constant arm_cfft_q15(&arm_cfft_sR_q31_len64, ADC_samples, 0, 1);                                                   ^../Src/main.c:77:54: error: expected declaration specifiers or '...' before numeric constant arm_cfft_q15(&arm_cfft_sR_q31_len64, ADC_samples, 0, 1);                                                      ^make: *** [Src/main.o] Error 1

Can some one explain how to add CMSIS-DSP lib to my project?

Thank

[leonardo]

Posted on May 08, 2017 at 01:24

The problems seems to be around de CubeMX generated project.

In systemWorkbench I create a new empty project with HAL firmware, then add ARM_MATH_CM3 and add arm_cortexM3l_math library path and reference in Linker properties, finally I add this code:

#include 'stm32f1xx.h'

#include 'stm32f1xx_nucleo.h'#include <math.h>#include 'arm_math.h'#include 'arm_const_structs.h'int main(void){    q31_t ADC_samples[2048];    arm_cfft_q31(&arm_cfft_sR_q31_len64, ADC_samples, 0, 1);    q31_t MAG_of_fft[1024];    //arm_cmplx_mag_q15(ADC_samples, MAG_of_fft, 1024);    for(;;);}

and everithing compile ok.

So what could be happend with cube generated prject?

[Rob.Riggs]

Posted on May 08, 2017 at 04:28

I have always had to manually copy the DSP library into my CubeMX projects.

[Imen.D]

Posted on May 08, 2017 at 16:57

Hi

Garberoglio.Leon

,

Which CubeMx/SW4STM32 version are you using ? You can share you .ioc file to check this issue.

Imen

[leonardo]

Posted on May 09, 2017 at 03:02

Is not a CubeMX problem.

I try with a new CubeMX generated project and simply add  arm_cortexM3l_math library and the include files and when I add a call to arm_cfft_q31 the program compile just fine.

So, the problem is when I add (link) a driver folder to the CubeMX generated project. I'm trying to identify the problem.

Whay os the best way to add a foolder with .c/.h files to a CubeMX project?

Thank

[Jeanne Joly · Accepted solution]

Posted on January 16, 2018 at 11:36

Hi

Garberoglio.Leon

,

In the following doc

https://community.st.com/0D50X00009bMM6QSAW

, it is described how to add BSP in the generated CubeMX code... and especially how to add a folder in the CubeMX project.

I hope it will help you.

BR. Jeanne