Simplified version of FFT code - drives on-board LED as a "Colour Organ".

Dependencies:   FastAnalogIn NVIC_set_all_priorities mbed-dsp mbed

Fork of KL25Z_FFT_Demo_tony by Tony Abbey

Committer:
tony1tf
Date:
Tue Jun 17 14:03:36 2014 +0000
Revision:
0:b8c9dffbbe7e
Simplified Tony Dicola Code - directly drives the on-board LED. Needs constant writing to serial port in order to work.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tony1tf 0:b8c9dffbbe7e 1 /* ----------------------------------------------------------------------
tony1tf 0:b8c9dffbbe7e 2 * Copyright (C) 2010-2013 ARM Limited. All rights reserved.
tony1tf 0:b8c9dffbbe7e 3 *
tony1tf 0:b8c9dffbbe7e 4 * $Date: 17. January 2013
tony1tf 0:b8c9dffbbe7e 5 * $Revision: V1.4.1
tony1tf 0:b8c9dffbbe7e 6 *
tony1tf 0:b8c9dffbbe7e 7 * Project: CMSIS DSP Library
tony1tf 0:b8c9dffbbe7e 8 * Title: arm_const_structs.h
tony1tf 0:b8c9dffbbe7e 9 *
tony1tf 0:b8c9dffbbe7e 10 * Description: This file has constant structs that are initialized for
tony1tf 0:b8c9dffbbe7e 11 * user convenience. For example, some can be given as
tony1tf 0:b8c9dffbbe7e 12 * arguments to the arm_cfft_f32() function.
tony1tf 0:b8c9dffbbe7e 13 *
tony1tf 0:b8c9dffbbe7e 14 * Target Processor: Cortex-M4/Cortex-M3
tony1tf 0:b8c9dffbbe7e 15 *
tony1tf 0:b8c9dffbbe7e 16 * Redistribution and use in source and binary forms, with or without
tony1tf 0:b8c9dffbbe7e 17 * modification, are permitted provided that the following conditions
tony1tf 0:b8c9dffbbe7e 18 * are met:
tony1tf 0:b8c9dffbbe7e 19 * - Redistributions of source code must retain the above copyright
tony1tf 0:b8c9dffbbe7e 20 * notice, this list of conditions and the following disclaimer.
tony1tf 0:b8c9dffbbe7e 21 * - Redistributions in binary form must reproduce the above copyright
tony1tf 0:b8c9dffbbe7e 22 * notice, this list of conditions and the following disclaimer in
tony1tf 0:b8c9dffbbe7e 23 * the documentation and/or other materials provided with the
tony1tf 0:b8c9dffbbe7e 24 * distribution.
tony1tf 0:b8c9dffbbe7e 25 * - Neither the name of ARM LIMITED nor the names of its contributors
tony1tf 0:b8c9dffbbe7e 26 * may be used to endorse or promote products derived from this
tony1tf 0:b8c9dffbbe7e 27 * software without specific prior written permission.
tony1tf 0:b8c9dffbbe7e 28 *
tony1tf 0:b8c9dffbbe7e 29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
tony1tf 0:b8c9dffbbe7e 30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
tony1tf 0:b8c9dffbbe7e 31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
tony1tf 0:b8c9dffbbe7e 32 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
tony1tf 0:b8c9dffbbe7e 33 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
tony1tf 0:b8c9dffbbe7e 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
tony1tf 0:b8c9dffbbe7e 35 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
tony1tf 0:b8c9dffbbe7e 36 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
tony1tf 0:b8c9dffbbe7e 37 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
tony1tf 0:b8c9dffbbe7e 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
tony1tf 0:b8c9dffbbe7e 39 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
tony1tf 0:b8c9dffbbe7e 40 * POSSIBILITY OF SUCH DAMAGE.
tony1tf 0:b8c9dffbbe7e 41 * -------------------------------------------------------------------- */
tony1tf 0:b8c9dffbbe7e 42
tony1tf 0:b8c9dffbbe7e 43 #ifndef _ARM_CONST_STRUCTS_H
tony1tf 0:b8c9dffbbe7e 44 #define _ARM_CONST_STRUCTS_H
tony1tf 0:b8c9dffbbe7e 45
tony1tf 0:b8c9dffbbe7e 46 #include "arm_math.h"
tony1tf 0:b8c9dffbbe7e 47 #include "arm_common_tables.h"
tony1tf 0:b8c9dffbbe7e 48
tony1tf 0:b8c9dffbbe7e 49 const arm_cfft_instance_f32 arm_cfft_sR_f32_len16 = {
tony1tf 0:b8c9dffbbe7e 50 16, twiddleCoef_16, armBitRevIndexTable16, ARMBITREVINDEXTABLE__16_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 51 };
tony1tf 0:b8c9dffbbe7e 52
tony1tf 0:b8c9dffbbe7e 53 const arm_cfft_instance_f32 arm_cfft_sR_f32_len32 = {
tony1tf 0:b8c9dffbbe7e 54 32, twiddleCoef_32, armBitRevIndexTable32, ARMBITREVINDEXTABLE__32_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 55 };
tony1tf 0:b8c9dffbbe7e 56
tony1tf 0:b8c9dffbbe7e 57 const arm_cfft_instance_f32 arm_cfft_sR_f32_len64 = {
tony1tf 0:b8c9dffbbe7e 58 64, twiddleCoef_64, armBitRevIndexTable64, ARMBITREVINDEXTABLE__64_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 59 };
tony1tf 0:b8c9dffbbe7e 60
tony1tf 0:b8c9dffbbe7e 61 const arm_cfft_instance_f32 arm_cfft_sR_f32_len128 = {
tony1tf 0:b8c9dffbbe7e 62 128, twiddleCoef_128, armBitRevIndexTable128, ARMBITREVINDEXTABLE_128_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 63 };
tony1tf 0:b8c9dffbbe7e 64
tony1tf 0:b8c9dffbbe7e 65 const arm_cfft_instance_f32 arm_cfft_sR_f32_len256 = {
tony1tf 0:b8c9dffbbe7e 66 256, twiddleCoef_256, armBitRevIndexTable256, ARMBITREVINDEXTABLE_256_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 67 };
tony1tf 0:b8c9dffbbe7e 68
tony1tf 0:b8c9dffbbe7e 69 const arm_cfft_instance_f32 arm_cfft_sR_f32_len512 = {
tony1tf 0:b8c9dffbbe7e 70 512, twiddleCoef_512, armBitRevIndexTable512, ARMBITREVINDEXTABLE_512_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 71 };
tony1tf 0:b8c9dffbbe7e 72
tony1tf 0:b8c9dffbbe7e 73 const arm_cfft_instance_f32 arm_cfft_sR_f32_len1024 = {
tony1tf 0:b8c9dffbbe7e 74 1024, twiddleCoef_1024, armBitRevIndexTable1024, ARMBITREVINDEXTABLE1024_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 75 };
tony1tf 0:b8c9dffbbe7e 76
tony1tf 0:b8c9dffbbe7e 77 const arm_cfft_instance_f32 arm_cfft_sR_f32_len2048 = {
tony1tf 0:b8c9dffbbe7e 78 2048, twiddleCoef_2048, armBitRevIndexTable2048, ARMBITREVINDEXTABLE2048_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 79 };
tony1tf 0:b8c9dffbbe7e 80
tony1tf 0:b8c9dffbbe7e 81 const arm_cfft_instance_f32 arm_cfft_sR_f32_len4096 = {
tony1tf 0:b8c9dffbbe7e 82 4096, twiddleCoef_4096, armBitRevIndexTable4096, ARMBITREVINDEXTABLE4096_TABLE_LENGTH
tony1tf 0:b8c9dffbbe7e 83 };
tony1tf 0:b8c9dffbbe7e 84
tony1tf 0:b8c9dffbbe7e 85 #endif
tony1tf 0:b8c9dffbbe7e 86