----- Original Message ----- From: "Olin Lathrop" To: Sent: Tuesday, June 26, 2001 3:05 PM Subject: Re: [PIC]: A/D spectrum analyzer > > If he were asking for realtime digital filtering I would agree, but he > > is only asking for a spectrum analyzer. He can digitize a chunk, then > > chew on it for a while before outputting the result and grabbing another > > chunk. I don't have an answer for him, but somewhere there must be some > > FFT code for a PIC. > > This sounds like a job for the DSPics that are coming out. Some DSPs (I'm > not sure about the DSPics) have special support for doing the butterfly > addressing for doing power of 2 FFTs. > > > ******************************************************************** > Olin Lathrop, embedded systems consultant in Littleton Massachusetts The dsPIC (note the strange capitalization) does supposedly handle butterfly addressing, tho' for the life of me I can't figure out how based on the publicly released information on the mChip site. Bob Ammerman RAm Systems (contract development of high performance, high function, low-level software) -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads