My colleagues from the Arm Digital Signal Processing (DSP) software team have introduced a Python wrapper for the CMSIS-DSP library that is compatible with NumPy. The CMSIS-DSP library is a rich collection of DSP functions that Arm has optimized for the…

I am using the Cortex M4 with CMSIS 5.4.0 DSP library. I'm using the arm_rfft_f32() function and the max_arm_f32() function to compute the maximum frequency bin of injected pure sine wave with an external CODEC. SSI0 and uDMA are being used to take in…

Hello All,

I'am using  TI MCU TM4C129x  and code composer IDE.

I've integrated the CMSIS DSP library inside my code and I'am able to apply the low pass filter using arm_fir_f32() function.

My input signal is the Varying frequency Sine wave…

Hi,

We are working on ARM Cortex-M4 (Nuvoton NUC472) based SoC as per our requirement.We are facing one critical issue like board is not booting when we enabled and used extrenal RAM on EBI.

We have ported following BSP package with below toolchain for…

I am writing open source easy to use top level Flash drivers which are portable to use on all Cortex M0 devices (vendor independent). So I was thinking of using CMSIS flash drivers as my low level block. So are CMSIS flash driver portable on all Cortex…

Hello,

I am looking to do a moving average function using DSP instructions of ARM Cortex M7. Unfortunately I couldn't find a direct example. My goal is to have variables for

- the sum

- the new value

- the oldest value

Then the algorithm is sum =…

Hi all,

We have purchased an MPS2+ platform, and everything was going well, but since Friday we are facing an error we do not understand.

When starting the FPGA configuration (by pressing the 'ON' button on the board), leds start blinking (the screen…

I am using Cortex-M series microcontroller and wrote my own FIFO implementations. Is there any CMSIS libraries that support common data structures like FIFO so i don't have to write my own? Obviously FIFO is not difficult at all to implement but if there…

Hi,

I am exploring the CMSIS DSP library. After playing for a while I have 2 questions:

-in case I want to evaluate DFT over bigger data window than 4096 I would need to provide Twiddle Coefficient array for particular size and make aplit the data set…

It appears the CMSIS math library for Cortex-M7 is missing arm_sqrt_f32().  I ran objdump on the library and arm_sqrt_f32() is missing.  The library contains arm_sqrt_q15(), arm_sqrt_q31() but does not have arm_sqrt_f32().

CMSIS_5/CMSIS/Lib/GCC/libarm_cortexM7lfdp_math…

I have downloaded Keil 5.24a, and Arm cortex-M legacy support, when I want to create a new project, in micro selection step, in Software Packs there is no STM32F407VG micro, but there is STM32F407VGTx micro instead, and I don't know what is the difference…

I'm trying to implement a realtime lowpass FIR filter using the CMSIS library.

I'm essentially following this example:

The only difference is that instead of running the filter on a block of samples, I want to run the filter sample by sample.…

Hi,

I'm starting to explore this technology by running the TrustZone example application in Linux using GNU ARM Toolchain. This example is provided by a CMSIS software pack containing this example called "TrustZone for ARMv8-M No RTOS" which I was…

Why should we call secure function in handler mode? What is the design purpose for this?  As we know, none-secure side can also call secure function in thread mode.