DSPLIB DSP_fft32x32 C6414 vs C6678

murad qahwash

Genius 3770 points

I have a DSP code runs on C6414 and using old CCS (2.xx)....Now I moved the code to a C6678EVM and CCS5.2...

I run "DSP_fft32x32( )" on the same input data but I get different results...

I am using the twiddle factors from C6414 code...both codes are little endian...

Any suggestions?

Regards,

Murad

over 13 years ago

0 RandyP over 13 years ago

TI__Guru* 84110 points

Murad,

The C6678 is upward compatible with the C6414, so the same instructions should give the same results.

Please describe "different results" for your case.

Regards,
RandyP

0 murad qahwash over 13 years ago in reply to RandyP

Genius 3770 points

Thanks Randy for your reply,

Actually, the twiddle factors for the "iffy" for C64 are different than for the C66...the code we have for the C64 uses the same twiddle factors for both FFT and IFFT, which is not the case in the C66 DSPLIB!!!

Regards,

Murad

Processors

Processors forum

DSPLIB DSP_fft32x32 C6414 vs C6678