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NUC505 floating point calculation is too slow.

MCU
September 24, 2020 by Neil 1685

My program uses the cos function for calculation. If you simply use math.c to calculate once, it will be about 2ms, and it can be increased to 0.5ms with arm_math.c. At the same time, I use STM32f1 to test, and use math.c for about 0.115ms. May I ask Is there such a big difference, or is it my own mistake...

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Bonnie Posted on September 24, 2020

The key NUC supports DSP instructions and floating-point units.

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Connie Posted on September 24, 2020

Have you turned on floating point arithmetic? Does it need to be set?

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Jaycee Posted on September 24, 2020

You have to call the library operation of DSP.

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