Kinetis Microcontrollersのトピックdanieljabad@yahoo.it

danieljabad@yahoo.it

danieljabad — Fri, 23 Oct 2015 11:20:38 GMT

Hi,

I can't obtain a correct result from FFT "arm_rfft_q31" function from CMSIS DSP....

My Platform is : TWR-K70F120M

The environment is : KDS_3.0.0

Attached my project....

Thank you in advance for the help....

Daniel Abad

Original Attachment has been moved to: DSP_FFT_Q31_LIB_00.zip

Re: danieljabad@yahoo.it

xiangjun_rong — Tue, 27 Oct 2015 07:09:32 GMT

Hi, Daniel,

I have checked your code, the code is difficult to read. How do you know that the result is incorrect, what is your issue?

I have done FFT based on float type, I attach the code, hope it can help you. If you do want to develop FFT code based on q31 type data format, and have issue, pls update here, I will test.

Xiangjun Rong