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STM32F4 - fastest IIR biquad impelementation in Assembler

Question asked by Mig on Apr 27, 2018
Latest reply on Apr 27, 2018 by Clive One



I need the fastest implementation of a biquad IIR filter for STM32F4 in assembler. I have to run more than 60 filters at 48kHz. My current best time are 24 cycles per filter with TDF2 (17 at STM32F7).


The order of the instructions is important, I noticed. Wrong instruction orders are penalized with a lot more computation time.


Hope there is an assembler freak with the same passion!


best regards