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Altera_Forum
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15 years ago

Nios Ii Standard C Function For Resolver Input

Just wondering if anybody has an idea about the following NIOS II codes: static inline int sinus(int a) { return ALT_CI_COSIN_INST(0,a,0); } static inline int cosinus(int a) { ...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Yeah look pretty much like sine and cosine calculation.

I use similar CI.

Try using the CI with

y = sinus(int a) a=(0..65535) y=(+32767...-32768)

y = cosinus(int a) a=(0..65535) y=(+32767...-32768)

Meaning a=(0..65535) = (0*pi .. 2*pi) and y = (+32767...-32768) = (+0.9999999 ... -1.0)