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FFT Example code wrong



Hello,

I'm now trying to use the FFT_Example_66__LE_COFF  in the dsplib file. but I cant plot my figure properly.

the result is more like a random signal or a noise with quite high magnitude. I don't know why. I imported the whole project and run it directly. While running it, I just opened the graph and chose the single time, and changed data type from 32 to 16 unsigned bit. nothing more. Is there anybody can tell me whether it requires any special configurations? This is just really strange to me. and there's no more detail description about this part, so I supposed it shouldn't be that much difficult..

when the cores are in the suspend state, there's also a note shows SW breakpoint, everytime I run it, it will abort in the middle with a printout abort() at exit.c: 109 0x008152E0(abort doesn't contain frame information). Is this normal?

btw I'm using CCS5.4 under linux now.

Thank you for the response in advance.

Best regards,

Wendy

  • Hi Wendy,

    Have you accounted for the fact that the fact that the output and input to the function are complex? The easiest way to first test out your graph setup is to provide a single sine wave input and see how it appears in the input and output plots.

    Regards,

    Rahul