FFT library in ControlSuit

user1816836

Hello, everyone. I hope someone help me.

I use library in ControlSuit, but there are some problem. one is the results between matlab and ccs3.3 are different with float library(e2e.ti.com/.../1694197. The next is time consuming between simulation and emulation is also very different. Moreover, the results between them are quite different, which can confuse and beat everyone.
What's wrong with me? Is there any error in ControlSuit? But Ti is a big company in the world!
I use TMSC32028335.

Regards,

xinxizyf

over 10 years ago

0 Gautam Iyer over 10 years ago

Guru 192875 points

Hi,

Always believe in what way the hardware performs. I'm amazed that you're still with CCS v3.3! You've super powerful version now i.e. CCS v6 wherein you can do clock profiling.
Also, CCS v3.3 does not have -fpu support. Refer this:
e2e.ti.com/.../94872

Regards,
Gautam

0 Vishal_Coelho over 10 years ago

TI__Mastermind 20850 points

One way to check the output of the FFT is to feed in a pure sine wave and then check whether you get a single peak in the frequency spectrum (in the right bin) and compare the value of the peak to what you get in MATLAB

0 user1816836 over 10 years ago in reply to Vishal_Coelho

Prodigy 200 points

Sorry, the answer is right here.
e2e.ti.com/.../1819330

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FFT library in ControlSuit