Wed, 23 Jun 2004 19:22:07 +0400 Vladimir Vassilevsky wrote to Vladislav Baliasov:
DO>>>> HÅÔ, ÎÅ ÐÒÁ×ÄÁ. PIC ×ÙÐÏÌÎÑÅÔ ËÏÍÁÎÄÕ ÚÁ 4 ÔÁËÔÁ ÇÅÎÅÒÁÔÏÒÁ. VV>>> üÔÏ ÎÅÄÏËÏÍÁÎÄÙ. ôÁË ÞÔÏ × ~10 ÒÁÚ ÍÅÄÌÅÎÎÅÅ, ÞÅÍ AVR - ÒÅÁÌØÎÁÑ VV>>> ÏÃÅÎËÁ. VB>> ÎÕÖÎÏ ÞÔÏ-ÔÏ ÔÉÐÁ ÐÌÁ×ÕÞËÉ - AVR ÎÅ ÓÐÁÓÅÔ ÄÁÖÅ ×ÞÅÔ×ÅÒÏ ÂÏÌØÛÁÑ VB>> ÓËÏÒÏÓÔÒÅÌØÎÏÓÔØ, ×ÓÅ ÕÊÄÅÔ ÎÁ ÐÅÒÅÚÁÇÒÕÚËÕ ÒÅÇÉÓÔÒÏ×.
VV> ðÌÁ×ÕÞËÁ. ÷ÙÞÉÓÌÅÎÉÅ ÐÒÑÍÏÇÏ + ÏÂÒÁÔÎÏÇÏ âðæ ÎÁ 64 ÔÏÞËÉ. IAR 2.28A, VV> Mega16, ÏÐÔÉÍÉÚÁÃÉÑ ÎÁ ÓËÏÒÏÓÔØ. 2.0/1.9M ÔÁËÔÏ×, 3.4/2.8 ËÉÌÏÂÁÊÔ VV> ÐÏÌÎÏÇÏ ËÏÄÁ Ó ÂÉÂÌÉÏÔÅËÁÍÉ ÓÏÏÔ×ÅÔÓÔ×ÅÎÎÏ ANSI lib/IAR lib. VV> ðÒÉ×ÅÔ ×ÓÅÍ ÏÓÔÁÌØÎÙÍ :)
ðÒÉÍÅÒ ÎÅ ÓÏÂÉÒÁÅÔÓÑ. îÅÔ ÏÐÒÅÄÅÌÅÎÉÊ FFT, REV_FFT (ÐÏÎÑÔÎÏ, ÞÔÏ ÍÏÖÎÏ É ÓÁÍÏÍÕ ÄÏÐÉÓÁÔØ, ÎÏ ËÏÒÒÅËÔÎÅÅ, ×ÓÅ ÖÅ, ÐÒÅÄÌÁÇÁÔØ ÐÏÌÎÏÓÔØÀ ÓÏÂÉÒÁÂÅÌØÎÙÊ ÐÒÉÍÅÒ, ËÁË × ÓÌÕÞÁÅ Ó BCH) É, ÇÌÁ×ÎÏÅ, ÎÅÔ fft.h. úÁÐÏÓÔÉ ÜÔÏÔ ÚÁÇÏÌÏ×ÏË, ÐÌÉÚ. éÌÉ ÔÏ ÉÚ ÎÅÇÏ, ÞÔÏ ÎÅÏÂÈÏÄÉÍÏ ÄÌÑ ÓÂÏÒËÉ?
VV> C code (c) VLV 1995
VV> */
VV> main() VV> { VV> unsigned char ci; VV> float x[64],y[64];
VV> for(ci = 0;ci < 64; ci++) x[ci] = y[ci] = (float)ci;
VV> fft(x, y, 6, FFT); VV> fft(x, y, 6, REV_FFT);
VV> }
VV> #include <math.h>
VV> #include "fft.h"
ïÒÉÇÉÎÁÌØÎÏ - ÚÁÇÏÌÏ×ËÉ × ÓÅÒÅÄÉÎÅ ÆÁÊÌÁ. :)
VV> #if !defined M_PI VV> #define M_PI 3.14159265359 VV> #endif