不韋 呂 / F746_SD_VarableFilter

SD card player with variable cotoff frequency lowpass and highpass IIR filter. SD カードの *.wav ファイルのオーディオ信号を，遮断周波数可変 IIR 低域通過および高域通過フィルタを通して，ボードに搭載されているCODEC で出力する．このプログラムについては，CQ出版社インターフェース誌 2018年8月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO FrequencyResponseDrawer SD_PlayerSkeleton

mbed_src_STM32F7/api/Transaction.h@2:dcaee06f6ccb, 2016-10-02 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 02 10:40:44 2016 +0000
Revision:
2:dcaee06f6ccb
3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:dcaee06f6ccb 1 /* mbed Microcontroller Library
MikamiUitOpen 2:dcaee06f6ccb 2 * Copyright (c) 2015 ARM Limited
MikamiUitOpen 2:dcaee06f6ccb 3 *
MikamiUitOpen 2:dcaee06f6ccb 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:dcaee06f6ccb 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:dcaee06f6ccb 6 * You may obtain a copy of the License at
MikamiUitOpen 2:dcaee06f6ccb 7 *
MikamiUitOpen 2:dcaee06f6ccb 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:dcaee06f6ccb 9 *
MikamiUitOpen 2:dcaee06f6ccb 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:dcaee06f6ccb 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:dcaee06f6ccb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:dcaee06f6ccb 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:dcaee06f6ccb 14 * limitations under the License.
MikamiUitOpen 2:dcaee06f6ccb 15 */
MikamiUitOpen 2:dcaee06f6ccb 16 #ifndef MBED_TRANSACTION_H
MikamiUitOpen 2:dcaee06f6ccb 17 #define MBED_TRANSACTION_H
MikamiUitOpen 2:dcaee06f6ccb 18
MikamiUitOpen 2:dcaee06f6ccb 19 #include "platform.h"
MikamiUitOpen 2:dcaee06f6ccb 20 #include "FunctionPointer.h"
MikamiUitOpen 2:dcaee06f6ccb 21
MikamiUitOpen 2:dcaee06f6ccb 22 namespace mbed {
MikamiUitOpen 2:dcaee06f6ccb 23
MikamiUitOpen 2:dcaee06f6ccb 24 /** Transaction structure
MikamiUitOpen 2:dcaee06f6ccb 25 */
MikamiUitOpen 2:dcaee06f6ccb 26 typedef struct {
MikamiUitOpen 2:dcaee06f6ccb 27 void *tx_buffer; /**< Tx buffer */
MikamiUitOpen 2:dcaee06f6ccb 28 size_t tx_length; /**< Length of Tx buffer*/
MikamiUitOpen 2:dcaee06f6ccb 29 void *rx_buffer; /**< Rx buffer */
MikamiUitOpen 2:dcaee06f6ccb 30 size_t rx_length; /**< Length of Rx buffer */
MikamiUitOpen 2:dcaee06f6ccb 31 uint32_t event; /**< Event for a transaction */
MikamiUitOpen 2:dcaee06f6ccb 32 event_callback_t callback; /**< User's callback */
MikamiUitOpen 2:dcaee06f6ccb 33 uint8_t width; /**< Buffer's word width (8, 16, 32, 64) */
MikamiUitOpen 2:dcaee06f6ccb 34 } transaction_t;
MikamiUitOpen 2:dcaee06f6ccb 35
MikamiUitOpen 2:dcaee06f6ccb 36 /** Transaction class defines a transaction.
MikamiUitOpen 2:dcaee06f6ccb 37 */
MikamiUitOpen 2:dcaee06f6ccb 38 template<typename Class>
MikamiUitOpen 2:dcaee06f6ccb 39 class Transaction {
MikamiUitOpen 2:dcaee06f6ccb 40 public:
MikamiUitOpen 2:dcaee06f6ccb 41 Transaction(Class *tpointer, const transaction_t& transaction) : _obj(tpointer), _data(transaction) {
MikamiUitOpen 2:dcaee06f6ccb 42 }
MikamiUitOpen 2:dcaee06f6ccb 43
MikamiUitOpen 2:dcaee06f6ccb 44 Transaction() : _obj(), _data() {
MikamiUitOpen 2:dcaee06f6ccb 45 }
MikamiUitOpen 2:dcaee06f6ccb 46
MikamiUitOpen 2:dcaee06f6ccb 47 ~Transaction() {
MikamiUitOpen 2:dcaee06f6ccb 48 }
MikamiUitOpen 2:dcaee06f6ccb 49
MikamiUitOpen 2:dcaee06f6ccb 50 /** Get object's instance for the transaction
MikamiUitOpen 2:dcaee06f6ccb 51 *
MikamiUitOpen 2:dcaee06f6ccb 52 * @return The object which was stored
MikamiUitOpen 2:dcaee06f6ccb 53 */
MikamiUitOpen 2:dcaee06f6ccb 54 Class* get_object() {
MikamiUitOpen 2:dcaee06f6ccb 55 return _obj;
MikamiUitOpen 2:dcaee06f6ccb 56 }
MikamiUitOpen 2:dcaee06f6ccb 57
MikamiUitOpen 2:dcaee06f6ccb 58 /** Get the transaction
MikamiUitOpen 2:dcaee06f6ccb 59 *
MikamiUitOpen 2:dcaee06f6ccb 60 * @return The transaction which was stored
MikamiUitOpen 2:dcaee06f6ccb 61 */
MikamiUitOpen 2:dcaee06f6ccb 62 transaction_t* get_transaction() {
MikamiUitOpen 2:dcaee06f6ccb 63 return &_data;
MikamiUitOpen 2:dcaee06f6ccb 64 }
MikamiUitOpen 2:dcaee06f6ccb 65
MikamiUitOpen 2:dcaee06f6ccb 66 private:
MikamiUitOpen 2:dcaee06f6ccb 67 Class* _obj;
MikamiUitOpen 2:dcaee06f6ccb 68 transaction_t _data;
MikamiUitOpen 2:dcaee06f6ccb 69 };
MikamiUitOpen 2:dcaee06f6ccb 70
MikamiUitOpen 2:dcaee06f6ccb 71 }
MikamiUitOpen 2:dcaee06f6ccb 72
MikamiUitOpen 2:dcaee06f6ccb 73 #endif