STM32 MCUs Embedded software

Why do i get different results when calculating FIR with DSP math functions

Hi,My Controller is STM32G473RE . Sample rate is each 2.8 ms .I have created a filter with mathlab which presented me with plain C code.This code does exactly what i want and gives the expected results.int16_t input[3100]={4582,4581,4573,.... double ...

Resolved! How to setup CMSIS DSP on a ARM Cortex M33

Hello Everyone,I currently trying to implement a FFT by using the optimized functions from CMSIS library on a L5 MCU. The fact is that the M33 family seems not to be supported then I was wondering whether there's some kind of workaround in order to m...

Resolved! CMSIS DSP Library performance

I'm using the STM32F769DI and the SMT32cCube for a project which will be using the CMSIS DSP libraries in a computationally demanding application.My C code is set for fast optimisation. __FPU_USED and FPU_PRESENT are set. ARM_MATH_CM7 is defined. I c...

How to combine HAL_I2SEx_TransmitReceive_DMA with arm_biquad_cascade_df1_f32? Due to data Receive as uint16_t but the arm filter input is float32_t.

Resolved! I have a question about cmsis dsp lib source.((arm_mult_q31.c)

HiI found something strange in cmsis dsp source.I am using stm32f429 and LITTLE ENDIAN and cmsis dsp library V.1.5.1.in cmsis dsp library(arm_mult_q31.c) :void arm_mult_q31( q31_t * pSrcA, q31_t * pSrcB, q31_t * pDst, uint32_t blockSize){... whil...

STM32F4 clock configuration tool generates code that causes USART baud rates to be 2x too fast

I am using the STM clock configuration tool STM32F4xx_ClockConfiguration_V1.10.xls to generate the system_stm32f4xx.c file for a project using a STM32F407 processor with a 16MHz HSE. I am also using the Keil MDK-ARM V5.23, and the STM32F4xx_DSP_StdP...

any sample code available for low pass filter using CMSIS library function.

Hi , I am using STM32H745XI microcontroller . I want to implement low pass filter for integrating Rogowski coil current signal on CM7 core. For reference ,Any sample code available for low pass filter implementation using CMSIS library?Thanks and Re...

How is CMSIS DSP and NN library implement using SIMD instruction and FPU?

I came across a documentation stating that arm m4+ processors have CMSIS DSP api that is implemented with SIMD instructions. When we try to take the library file to use it there are 2 variants single precision and doubles precision FPU. I assumed tha...

Resolved! How to use CMSIS 5.8.0 in the cubeIDE

Hi,I use the stm32f446re with the cubeIDE and would like to use FFT's with 16 bit float (arm_rfft_fast_f16) like in the CMSIS DSP 5.8.0.The older CMSIS library works fine with the other data types but i cant get the new (DSP 1.9.0) to work. I tried d...