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Hi,

I am working on porting FFT functionality from CMSIS DSP library to another architecture.
Unfortunate I faced with problem that arm_bitreversal_32 function is implemented in assembler.

Does any body tried to convert it to C code?

Hello,

DSP concept guys say, that it's time to use ARM Cortex-M microcontrollers for embedded DSP systems, so I looked at CMSIS library of filtering functions, and found that it is of block type.

As you know, the most painful feature of ARM Cortex-M…

Hi,

I am trying to implement FIR decimation on PDM input. Which FIR decimator function should I use? I am now trying to implement arm_fir_decimate_fast_q15 since I need to feed the output (hopefully PCM) to 10 bit DAC. But I am not sure how I get the coefficients…

CMSIS DSP is a great tool which allows Cortex-M4 devices to have a great app field range, even replacing some general purpose DSP sometimes. However I am missing some "simple" new functions that could enhance, even more, the use of it.

For example…

Hi

I have been testing the CMSIS DSP matrix inverse function and am observing unexpected results. In particular, the function arm_mat_inverse_f32 returns ARM_MATH_SINGULAR for matrices that are clearly not singular. For example, a 4x4 identity matrix …

Hi

I am using CMSIS 3.2 library in my Cortex-M4 based uc, In that I am using arm_cfft_f32(&arm_cfft_sR_f32_len16, testInput_f32_10khz, ifftFlag, doBitReverse); function present in arm_fft_bin_example_f32 which is present in CMSIS3.2 library(I reduced…

Hi All;

I have some questions about correct use of the CMSIS DSP library call arm_fir_32. First, I'll provide some background about what I am doing and what the setup is.

I have a STM32F4 Discovery board, using IAR EWARM for programming. Just for…

Hi

I am unable to find any documentation on how to add library in eclipse based IDE. Presently I am using Freescale's CodeWarrior and I want to add the CMSIS's DSP Library in that.  Thanks in advance

Kind Regards

Amit Kumar

Hi,

I am currently trying to use the CMSIS DSP library for finding the frequency bin. I have used both  CFFT and RFFT function to compute the frequency bin of input signal.

My input data is of 128 samples which content only real part (complex part…