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IIR functions in DSP libraries (STM32F407xx)

juergen239955_stm1
Associate II
Posted on September 28, 2012 at 19:08

Dear colleagues,

 

 

      are there any stable libraries for IIR (recursive) filters for the STM32F4x, aside of the CMSIS DSP software library? The CMSIS has only lattice (arm_iir_lattice***) or biquad (arm_biquad_cascade***) implementations. I'm simply looking for a straightforward regular implementation with recursive b[n] and a[n] coefficients. Only up to n=5 or 6, so the biquad functions are an overkill; plus, I would like to avoid having to calculate the coefficients (I've got tons of filters in standard recursive form).

 

 

Thanks for any hints,

 

 

--JJ

 

 

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