不韋 呂 / F746_AcousticEffector_MIC

Audio singal input and output example for DISCO-F746. Input: MEMS mic, Output: CN10 OUT, Acoustic effect: echo and frequency shift. DISCO-F746 によるオーディオ信号入出力．入力：MEMS マイク，出力：CN10 OUT，音響効果：エコー，周波数変換．

Dependencies:   F746_GUI F746_SAI_IO

mbed_src_STM32F7/api/AnalogOut.h@10:56f2f01df983, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 13:44:13 2017 +0000
Revision:
10:56f2f01df983
Parent:
6:38f7dce055d0 
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 6:38f7dce055d0 1 /* mbed Microcontroller Library
MikamiUitOpen 6:38f7dce055d0 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 6:38f7dce055d0 3 *
MikamiUitOpen 6:38f7dce055d0 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 6:38f7dce055d0 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 6:38f7dce055d0 6 * You may obtain a copy of the License at
MikamiUitOpen 6:38f7dce055d0 7 *
MikamiUitOpen 6:38f7dce055d0 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 6:38f7dce055d0 9 *
MikamiUitOpen 6:38f7dce055d0 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 6:38f7dce055d0 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 6:38f7dce055d0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 6:38f7dce055d0 13 * See the License for the specific language governing permissions and
MikamiUitOpen 6:38f7dce055d0 14 * limitations under the License.
MikamiUitOpen 6:38f7dce055d0 15 */
MikamiUitOpen 6:38f7dce055d0 16 #ifndef MBED_ANALOGOUT_H
MikamiUitOpen 6:38f7dce055d0 17 #define MBED_ANALOGOUT_H
MikamiUitOpen 6:38f7dce055d0 18
MikamiUitOpen 6:38f7dce055d0 19 #include "platform.h"
MikamiUitOpen 6:38f7dce055d0 20
MikamiUitOpen 6:38f7dce055d0 21 #if DEVICE_ANALOGOUT
MikamiUitOpen 6:38f7dce055d0 22
MikamiUitOpen 6:38f7dce055d0 23 #include "analogout_api.h"
MikamiUitOpen 6:38f7dce055d0 24
MikamiUitOpen 6:38f7dce055d0 25 namespace mbed {
MikamiUitOpen 6:38f7dce055d0 26
MikamiUitOpen 6:38f7dce055d0 27 /** An analog output, used for setting the voltage on a pin
MikamiUitOpen 6:38f7dce055d0 28 *
MikamiUitOpen 6:38f7dce055d0 29 * Example:
MikamiUitOpen 6:38f7dce055d0 30 * @code
MikamiUitOpen 6:38f7dce055d0 31 * // Make a sawtooth output
MikamiUitOpen 6:38f7dce055d0 32 *
MikamiUitOpen 6:38f7dce055d0 33 * #include "mbed.h"
MikamiUitOpen 6:38f7dce055d0 34 *
MikamiUitOpen 6:38f7dce055d0 35 * AnalogOut tri(p18);
MikamiUitOpen 6:38f7dce055d0 36 * int main() {
MikamiUitOpen 6:38f7dce055d0 37 * while(1) {
MikamiUitOpen 6:38f7dce055d0 38 * tri = tri + 0.01;
MikamiUitOpen 6:38f7dce055d0 39 * wait_us(1);
MikamiUitOpen 6:38f7dce055d0 40 * if(tri == 1) {
MikamiUitOpen 6:38f7dce055d0 41 * tri = 0;
MikamiUitOpen 6:38f7dce055d0 42 * }
MikamiUitOpen 6:38f7dce055d0 43 * }
MikamiUitOpen 6:38f7dce055d0 44 * }
MikamiUitOpen 6:38f7dce055d0 45 * @endcode
MikamiUitOpen 6:38f7dce055d0 46 */
MikamiUitOpen 6:38f7dce055d0 47 class AnalogOut {
MikamiUitOpen 6:38f7dce055d0 48
MikamiUitOpen 6:38f7dce055d0 49 public:
MikamiUitOpen 6:38f7dce055d0 50
MikamiUitOpen 6:38f7dce055d0 51 /** Create an AnalogOut connected to the specified pin
MikamiUitOpen 6:38f7dce055d0 52 *
MikamiUitOpen 6:38f7dce055d0 53 * @param AnalogOut pin to connect to (18)
MikamiUitOpen 6:38f7dce055d0 54 */
MikamiUitOpen 6:38f7dce055d0 55 AnalogOut(PinName pin) {
MikamiUitOpen 6:38f7dce055d0 56 analogout_init(&_dac, pin);
MikamiUitOpen 6:38f7dce055d0 57 }
MikamiUitOpen 6:38f7dce055d0 58
MikamiUitOpen 6:38f7dce055d0 59 /** Set the output voltage, specified as a percentage (float)
MikamiUitOpen 6:38f7dce055d0 60 *
MikamiUitOpen 6:38f7dce055d0 61 * @param value A floating-point value representing the output voltage,
MikamiUitOpen 6:38f7dce055d0 62 * specified as a percentage. The value should lie between
MikamiUitOpen 6:38f7dce055d0 63 * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
MikamiUitOpen 6:38f7dce055d0 64 * Values outside this range will be saturated to 0.0f or 1.0f.
MikamiUitOpen 6:38f7dce055d0 65 */
MikamiUitOpen 6:38f7dce055d0 66 void write(float value) {
MikamiUitOpen 6:38f7dce055d0 67 analogout_write(&_dac, value);
MikamiUitOpen 6:38f7dce055d0 68 }
MikamiUitOpen 6:38f7dce055d0 69
MikamiUitOpen 6:38f7dce055d0 70 /** Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
MikamiUitOpen 6:38f7dce055d0 71 *
MikamiUitOpen 6:38f7dce055d0 72 * @param value 16-bit unsigned short representing the output voltage,
MikamiUitOpen 6:38f7dce055d0 73 * normalised to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v)
MikamiUitOpen 6:38f7dce055d0 74 */
MikamiUitOpen 6:38f7dce055d0 75 void write_u16(unsigned short value) {
MikamiUitOpen 6:38f7dce055d0 76 analogout_write_u16(&_dac, value);
MikamiUitOpen 6:38f7dce055d0 77 }
MikamiUitOpen 6:38f7dce055d0 78
MikamiUitOpen 6:38f7dce055d0 79 /** Return the current output voltage setting, measured as a percentage (float)
MikamiUitOpen 6:38f7dce055d0 80 *
MikamiUitOpen 6:38f7dce055d0 81 * @returns
MikamiUitOpen 6:38f7dce055d0 82 * A floating-point value representing the current voltage being output on the pin,
MikamiUitOpen 6:38f7dce055d0 83 * measured as a percentage. The returned value will lie between
MikamiUitOpen 6:38f7dce055d0 84 * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
MikamiUitOpen 6:38f7dce055d0 85 *
MikamiUitOpen 6:38f7dce055d0 86 * @note
MikamiUitOpen 6:38f7dce055d0 87 * This value may not match exactly the value set by a previous write().
MikamiUitOpen 6:38f7dce055d0 88 */
MikamiUitOpen 6:38f7dce055d0 89 float read() {
MikamiUitOpen 6:38f7dce055d0 90 return analogout_read(&_dac);
MikamiUitOpen 6:38f7dce055d0 91 }
MikamiUitOpen 6:38f7dce055d0 92
MikamiUitOpen 6:38f7dce055d0 93 #ifdef MBED_OPERATORS
MikamiUitOpen 6:38f7dce055d0 94 /** An operator shorthand for write()
MikamiUitOpen 6:38f7dce055d0 95 */
MikamiUitOpen 6:38f7dce055d0 96 AnalogOut& operator= (float percent) {
MikamiUitOpen 6:38f7dce055d0 97 write(percent);
MikamiUitOpen 6:38f7dce055d0 98 return *this;
MikamiUitOpen 6:38f7dce055d0 99 }
MikamiUitOpen 6:38f7dce055d0 100
MikamiUitOpen 6:38f7dce055d0 101 AnalogOut& operator= (AnalogOut& rhs) {
MikamiUitOpen 6:38f7dce055d0 102 write(rhs.read());
MikamiUitOpen 6:38f7dce055d0 103 return *this;
MikamiUitOpen 6:38f7dce055d0 104 }
MikamiUitOpen 6:38f7dce055d0 105
MikamiUitOpen 6:38f7dce055d0 106 /** An operator shorthand for read()
MikamiUitOpen 6:38f7dce055d0 107 */
MikamiUitOpen 6:38f7dce055d0 108 operator float() {
MikamiUitOpen 6:38f7dce055d0 109 return read();
MikamiUitOpen 6:38f7dce055d0 110 }
MikamiUitOpen 6:38f7dce055d0 111 #endif
MikamiUitOpen 6:38f7dce055d0 112
MikamiUitOpen 6:38f7dce055d0 113 protected:
MikamiUitOpen 6:38f7dce055d0 114 dac_t _dac;
MikamiUitOpen 6:38f7dce055d0 115 };
MikamiUitOpen 6:38f7dce055d0 116
MikamiUitOpen 6:38f7dce055d0 117 } // namespace mbed
MikamiUitOpen 6:38f7dce055d0 118
MikamiUitOpen 6:38f7dce055d0 119 #endif
MikamiUitOpen 6:38f7dce055d0 120
MikamiUitOpen 6:38f7dce055d0 121 #endif