TMS320F28P550SJ: What VCU Lib RFFT can run on F28P55x?

AnBer

Part Number: TMS320F28P550SJ
Other Parts Discussed in Thread: C2000WARE

Team,
-This FAQ summarize the different optimized FFT implementations (Float, fixed point, fractionnal/Q15) on different acceleration (FPU, VCU, C28x):
https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/951619/faq-what-are-the-different-fft-implementations-on-a-c28x-c28x-fpu-and-vcu

-It seems that fractionnal data types (ie Q15 format) is only supported via the VCU DSP lib implementation:
https://dev.ti.com/tirex/explore/node?isTheia=false&node=A__AI-jRHJH3uwFdgY41zzg6g__C2000WARE__1kRFgrO__LATEST

Which optimized FFT fct would run on the F28P55x?
2837x_vcu0_rfft_xxx or 2837x_vcu2_rfft_xxx?

Thanks in advance,

Anber

4 months ago

0 Sira Rao80 4 months ago

TI__Mastermind 28135 points

The F28P55x contains the VCRC, not VCU0/VCU2, so neither is supported on the F28P55x.

0 AnBer 4 months ago in reply to Sira Rao80

TI__Mastermind 31205 points

Hi Sira,
-Do we have a C28x based optimized Q15 RFTT that can run on any F28x MCU?

-Are CLA FFTs supporting integer or floating point input?
https://dev.ti.com/tirex/explore/node?isTheia=false&node=A__AGKJjb7A9qUo1kGbrkQpgg__C2000WARE__1kRFgrO__LATEST

Thanks in advance,

Anber

0 Sira Rao80 4 months ago in reply to AnBer

TI__Mastermind 28135 points

Anber,

1. Yes, in C2000Ware_26_00_00_00\libraries\dsp\FixedPoint\c28\examples\FixedPoint_RFFT. The example may be available for a specific MCU, but porting it to a different F28x MCU is straightforward.

2. Floating-point.

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TMS320F28P550SJ: What VCU Lib RFFT can run on F28P55x?