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/RawSerial.h@11:399670d24ed9, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 01:44:22 2017 +0000
Revision:
11:399670d24ed9
Parent:
2:dcaee06f6ccb 
12

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:dcaee06f6ccb 1 /* mbed Microcontroller Library
MikamiUitOpen 2:dcaee06f6ccb 2 * Copyright (c) 2006-2013 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_RAW_SERIAL_H
MikamiUitOpen 2:dcaee06f6ccb 17 #define MBED_RAW_SERIAL_H
MikamiUitOpen 2:dcaee06f6ccb 18
MikamiUitOpen 2:dcaee06f6ccb 19 #include "platform.h"
MikamiUitOpen 2:dcaee06f6ccb 20
MikamiUitOpen 2:dcaee06f6ccb 21 #if DEVICE_SERIAL
MikamiUitOpen 2:dcaee06f6ccb 22
MikamiUitOpen 2:dcaee06f6ccb 23 #include "SerialBase.h"
MikamiUitOpen 2:dcaee06f6ccb 24 #include "serial_api.h"
MikamiUitOpen 2:dcaee06f6ccb 25
MikamiUitOpen 2:dcaee06f6ccb 26 namespace mbed {
MikamiUitOpen 2:dcaee06f6ccb 27
MikamiUitOpen 2:dcaee06f6ccb 28 /** A serial port (UART) for communication with other serial devices
MikamiUitOpen 2:dcaee06f6ccb 29 * This is a variation of the Serial class that doesn't use streams,
MikamiUitOpen 2:dcaee06f6ccb 30 * thus making it safe to use in interrupt handlers with the RTOS.
MikamiUitOpen 2:dcaee06f6ccb 31 *
MikamiUitOpen 2:dcaee06f6ccb 32 * Can be used for Full Duplex communication, or Simplex by specifying
MikamiUitOpen 2:dcaee06f6ccb 33 * one pin as NC (Not Connected)
MikamiUitOpen 2:dcaee06f6ccb 34 *
MikamiUitOpen 2:dcaee06f6ccb 35 * Example:
MikamiUitOpen 2:dcaee06f6ccb 36 * @code
MikamiUitOpen 2:dcaee06f6ccb 37 * // Send a char to the PC
MikamiUitOpen 2:dcaee06f6ccb 38 *
MikamiUitOpen 2:dcaee06f6ccb 39 * #include "mbed.h"
MikamiUitOpen 2:dcaee06f6ccb 40 *
MikamiUitOpen 2:dcaee06f6ccb 41 * RawSerial pc(USBTX, USBRX);
MikamiUitOpen 2:dcaee06f6ccb 42 *
MikamiUitOpen 2:dcaee06f6ccb 43 * int main() {
MikamiUitOpen 2:dcaee06f6ccb 44 * pc.putc('A');
MikamiUitOpen 2:dcaee06f6ccb 45 * }
MikamiUitOpen 2:dcaee06f6ccb 46 * @endcode
MikamiUitOpen 2:dcaee06f6ccb 47 */
MikamiUitOpen 2:dcaee06f6ccb 48 class RawSerial: public SerialBase {
MikamiUitOpen 2:dcaee06f6ccb 49
MikamiUitOpen 2:dcaee06f6ccb 50 public:
MikamiUitOpen 2:dcaee06f6ccb 51 /** Create a RawSerial port, connected to the specified transmit and receive pins
MikamiUitOpen 2:dcaee06f6ccb 52 *
MikamiUitOpen 2:dcaee06f6ccb 53 * @param tx Transmit pin
MikamiUitOpen 2:dcaee06f6ccb 54 * @param rx Receive pin
MikamiUitOpen 2:dcaee06f6ccb 55 *
MikamiUitOpen 2:dcaee06f6ccb 56 * @note
MikamiUitOpen 2:dcaee06f6ccb 57 * Either tx or rx may be specified as NC if unused
MikamiUitOpen 2:dcaee06f6ccb 58 */
MikamiUitOpen 2:dcaee06f6ccb 59 RawSerial(PinName tx, PinName rx);
MikamiUitOpen 2:dcaee06f6ccb 60
MikamiUitOpen 2:dcaee06f6ccb 61 /** Write a char to the serial port
MikamiUitOpen 2:dcaee06f6ccb 62 *
MikamiUitOpen 2:dcaee06f6ccb 63 * @param c The char to write
MikamiUitOpen 2:dcaee06f6ccb 64 *
MikamiUitOpen 2:dcaee06f6ccb 65 * @returns The written char or -1 if an error occured
MikamiUitOpen 2:dcaee06f6ccb 66 */
MikamiUitOpen 2:dcaee06f6ccb 67 int putc(int c);
MikamiUitOpen 2:dcaee06f6ccb 68
MikamiUitOpen 2:dcaee06f6ccb 69 /** Read a char from the serial port
MikamiUitOpen 2:dcaee06f6ccb 70 *
MikamiUitOpen 2:dcaee06f6ccb 71 * @returns The char read from the serial port
MikamiUitOpen 2:dcaee06f6ccb 72 */
MikamiUitOpen 2:dcaee06f6ccb 73 int getc();
MikamiUitOpen 2:dcaee06f6ccb 74
MikamiUitOpen 2:dcaee06f6ccb 75 /** Write a string to the serial port
MikamiUitOpen 2:dcaee06f6ccb 76 *
MikamiUitOpen 2:dcaee06f6ccb 77 * @param str The string to write
MikamiUitOpen 2:dcaee06f6ccb 78 *
MikamiUitOpen 2:dcaee06f6ccb 79 * @returns 0 if the write succeeds, EOF for error
MikamiUitOpen 2:dcaee06f6ccb 80 */
MikamiUitOpen 2:dcaee06f6ccb 81 int puts(const char *str);
MikamiUitOpen 2:dcaee06f6ccb 82
MikamiUitOpen 2:dcaee06f6ccb 83 int printf(const char *format, ...);
MikamiUitOpen 2:dcaee06f6ccb 84 };
MikamiUitOpen 2:dcaee06f6ccb 85
MikamiUitOpen 2:dcaee06f6ccb 86 } // namespace mbed
MikamiUitOpen 2:dcaee06f6ccb 87
MikamiUitOpen 2:dcaee06f6ccb 88 #endif
MikamiUitOpen 2:dcaee06f6ccb 89
MikamiUitOpen 2:dcaee06f6ccb 90 #endif