Hello,
I encountered a problem with the data type conversion from Float to IQN and from IQN to Float. I am using Matlab Embedded Coder to generate code from my Simulink Model. When I profile the code with CCS v6, I have encountered very high execution times for both data conversions. Both were around 750-850 Cycles which is a lot more then I would expect and what is stated in the IQMath user guide I found online.
The code of that Element generated by Matlab is:
/* C28x IQmath Library (stiiqmath_iq) - '<S2>/Float to IQN' */
{
rtb_FloattoIQN = _IQ30 (rtb_Add1);
}
/* C28x IQmath Library (stiiqmath_iqtrig) - '<S2>/Trig Fcn IQN' */
{
rtb_TrigFcnIQN = _IQ30sinPU(rtb_FloattoIQN);
}
/* C28x IQmath Library (stiiqmath_iqtof) - '<S2>/IQN to Float' */
{
rtb_Add2 = _IQ30toF (rtb_TrigFcnIQN);
}
The execution time of _IQ30sinPU() is fine. But the whole element is around 1600-1700 Cycles. All Cycles are Meassured with the Profiler Clock of CCS v6.
Is there a known issue with the data conversion or is there something I have to be aware of when using the data conversion Blocks?
