8-point FFT in CCS — Hardcoded

A C code listing for computing an 8-point FFT on the sequence {1,0,2,0,3,0,4,0} using hardcoded twiddle factor calculations, targeting the USBSTK5515 DSP platform in Code Composer Studio. Pure code post — no commentary, just the implementation.

Highlights

• The code — Hardcoded 8-point FFT — no loops, no functions, every butterfly explicitly written out.
• The platform — USBSTK5515 — TI's C55x DSP evaluation kit, programmed in Code Composer Studio.
• The sequence — {1,0,2,0,3,0,4,0} — a classic DSP test vector.

Originally published at chalolet.blogspot.com