I have the following C code's parts that uses tables of sins and cosins to
calculate a fundamental phasor of 60 Hz electrical system using 16 samples
per cycle (960 Sps):
float cosins[]={1, 0.92388, 0.70711, 0.38268, 0, -0.38268, -0.70711,
-0.92388, -1,
-0.92388, -0.70711, -0.38268, 0, 0.38268, 0.70711, 0.92388};
float sins[]={0, 0.38268, 0.70711, 0.92388, 1, 0.92388, 0.70711, 0.38268, 0,
-0.38268, -0.70711, -0.92388, -1, -0.92388, -0.70711,
-0.38268};
...
for(i=0; i <16; i++){
ret_r=x[15-i]*cosins[i]+ret_r;
ret_i=x[15-i]*sins[i]+ret_i;
}
return 0.088388*ret_r -0.088388*ret_i*I;
Is it possible to perform this using the libpruio in order to read 6 analog
inputs? If yes? What is the best way to implement it if other operations
were need, i.e. compute the division of 2 phasors.
Thanks.
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