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/PwmOut.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_PWMOUT_H
MikamiUitOpen 6:38f7dce055d0 17 #define MBED_PWMOUT_H
MikamiUitOpen 6:38f7dce055d0 18
MikamiUitOpen 6:38f7dce055d0 19 #include "platform.h"
MikamiUitOpen 6:38f7dce055d0 20
MikamiUitOpen 6:38f7dce055d0 21 #if DEVICE_PWMOUT
MikamiUitOpen 6:38f7dce055d0 22 #include "pwmout_api.h"
MikamiUitOpen 6:38f7dce055d0 23
MikamiUitOpen 6:38f7dce055d0 24 namespace mbed {
MikamiUitOpen 6:38f7dce055d0 25
MikamiUitOpen 6:38f7dce055d0 26 /** A pulse-width modulation digital output
MikamiUitOpen 6:38f7dce055d0 27 *
MikamiUitOpen 6:38f7dce055d0 28 * Example
MikamiUitOpen 6:38f7dce055d0 29 * @code
MikamiUitOpen 6:38f7dce055d0 30 * // Fade a led on.
MikamiUitOpen 6:38f7dce055d0 31 * #include "mbed.h"
MikamiUitOpen 6:38f7dce055d0 32 *
MikamiUitOpen 6:38f7dce055d0 33 * PwmOut led(LED1);
MikamiUitOpen 6:38f7dce055d0 34 *
MikamiUitOpen 6:38f7dce055d0 35 * int main() {
MikamiUitOpen 6:38f7dce055d0 36 * while(1) {
MikamiUitOpen 6:38f7dce055d0 37 * led = led + 0.01;
MikamiUitOpen 6:38f7dce055d0 38 * wait(0.2);
MikamiUitOpen 6:38f7dce055d0 39 * if(led == 1.0) {
MikamiUitOpen 6:38f7dce055d0 40 * led = 0;
MikamiUitOpen 6:38f7dce055d0 41 * }
MikamiUitOpen 6:38f7dce055d0 42 * }
MikamiUitOpen 6:38f7dce055d0 43 * }
MikamiUitOpen 6:38f7dce055d0 44 * @endcode
MikamiUitOpen 6:38f7dce055d0 45 *
MikamiUitOpen 6:38f7dce055d0 46 * @note
MikamiUitOpen 6:38f7dce055d0 47 * On the LPC1768 and LPC2368, the PWMs all share the same
MikamiUitOpen 6:38f7dce055d0 48 * period - if you change the period for one, you change it for all.
MikamiUitOpen 6:38f7dce055d0 49 * Although routines that change the period maintain the duty cycle
MikamiUitOpen 6:38f7dce055d0 50 * for its PWM, all other PWMs will require their duty cycle to be
MikamiUitOpen 6:38f7dce055d0 51 * refreshed.
MikamiUitOpen 6:38f7dce055d0 52 */
MikamiUitOpen 6:38f7dce055d0 53 class PwmOut {
MikamiUitOpen 6:38f7dce055d0 54
MikamiUitOpen 6:38f7dce055d0 55 public:
MikamiUitOpen 6:38f7dce055d0 56
MikamiUitOpen 6:38f7dce055d0 57 /** Create a PwmOut connected to the specified pin
MikamiUitOpen 6:38f7dce055d0 58 *
MikamiUitOpen 6:38f7dce055d0 59 * @param pin PwmOut pin to connect to
MikamiUitOpen 6:38f7dce055d0 60 */
MikamiUitOpen 6:38f7dce055d0 61 PwmOut(PinName pin) {
MikamiUitOpen 6:38f7dce055d0 62 pwmout_init(&_pwm, pin);
MikamiUitOpen 6:38f7dce055d0 63 }
MikamiUitOpen 6:38f7dce055d0 64
MikamiUitOpen 6:38f7dce055d0 65 /** Set the ouput duty-cycle, specified as a percentage (float)
MikamiUitOpen 6:38f7dce055d0 66 *
MikamiUitOpen 6:38f7dce055d0 67 * @param value A floating-point value representing the output duty-cycle,
MikamiUitOpen 6:38f7dce055d0 68 * specified as a percentage. The value should lie between
MikamiUitOpen 6:38f7dce055d0 69 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
MikamiUitOpen 6:38f7dce055d0 70 * Values outside this range will be saturated to 0.0f or 1.0f.
MikamiUitOpen 6:38f7dce055d0 71 */
MikamiUitOpen 6:38f7dce055d0 72 void write(float value) {
MikamiUitOpen 6:38f7dce055d0 73 pwmout_write(&_pwm, value);
MikamiUitOpen 6:38f7dce055d0 74 }
MikamiUitOpen 6:38f7dce055d0 75
MikamiUitOpen 6:38f7dce055d0 76 /** Return the current output duty-cycle setting, measured as a percentage (float)
MikamiUitOpen 6:38f7dce055d0 77 *
MikamiUitOpen 6:38f7dce055d0 78 * @returns
MikamiUitOpen 6:38f7dce055d0 79 * A floating-point value representing the current duty-cycle being output on the pin,
MikamiUitOpen 6:38f7dce055d0 80 * measured as a percentage. The returned value will lie between
MikamiUitOpen 6:38f7dce055d0 81 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
MikamiUitOpen 6:38f7dce055d0 82 *
MikamiUitOpen 6:38f7dce055d0 83 * @note
MikamiUitOpen 6:38f7dce055d0 84 * This value may not match exactly the value set by a previous <write>.
MikamiUitOpen 6:38f7dce055d0 85 */
MikamiUitOpen 6:38f7dce055d0 86 float read() {
MikamiUitOpen 6:38f7dce055d0 87 return pwmout_read(&_pwm);
MikamiUitOpen 6:38f7dce055d0 88 }
MikamiUitOpen 6:38f7dce055d0 89
MikamiUitOpen 6:38f7dce055d0 90 /** Set the PWM period, specified in seconds (float), keeping the duty cycle the same.
MikamiUitOpen 6:38f7dce055d0 91 *
MikamiUitOpen 6:38f7dce055d0 92 * @note
MikamiUitOpen 6:38f7dce055d0 93 * The resolution is currently in microseconds; periods smaller than this
MikamiUitOpen 6:38f7dce055d0 94 * will be set to zero.
MikamiUitOpen 6:38f7dce055d0 95 */
MikamiUitOpen 6:38f7dce055d0 96 void period(float seconds) {
MikamiUitOpen 6:38f7dce055d0 97 pwmout_period(&_pwm, seconds);
MikamiUitOpen 6:38f7dce055d0 98 }
MikamiUitOpen 6:38f7dce055d0 99
MikamiUitOpen 6:38f7dce055d0 100 /** Set the PWM period, specified in milli-seconds (int), keeping the duty cycle the same.
MikamiUitOpen 6:38f7dce055d0 101 */
MikamiUitOpen 6:38f7dce055d0 102 void period_ms(int ms) {
MikamiUitOpen 6:38f7dce055d0 103 pwmout_period_ms(&_pwm, ms);
MikamiUitOpen 6:38f7dce055d0 104 }
MikamiUitOpen 6:38f7dce055d0 105
MikamiUitOpen 6:38f7dce055d0 106 /** Set the PWM period, specified in micro-seconds (int), keeping the duty cycle the same.
MikamiUitOpen 6:38f7dce055d0 107 */
MikamiUitOpen 6:38f7dce055d0 108 void period_us(int us) {
MikamiUitOpen 6:38f7dce055d0 109 pwmout_period_us(&_pwm, us);
MikamiUitOpen 6:38f7dce055d0 110 }
MikamiUitOpen 6:38f7dce055d0 111
MikamiUitOpen 6:38f7dce055d0 112 /** Set the PWM pulsewidth, specified in seconds (float), keeping the period the same.
MikamiUitOpen 6:38f7dce055d0 113 */
MikamiUitOpen 6:38f7dce055d0 114 void pulsewidth(float seconds) {
MikamiUitOpen 6:38f7dce055d0 115 pwmout_pulsewidth(&_pwm, seconds);
MikamiUitOpen 6:38f7dce055d0 116 }
MikamiUitOpen 6:38f7dce055d0 117
MikamiUitOpen 6:38f7dce055d0 118 /** Set the PWM pulsewidth, specified in milli-seconds (int), keeping the period the same.
MikamiUitOpen 6:38f7dce055d0 119 */
MikamiUitOpen 6:38f7dce055d0 120 void pulsewidth_ms(int ms) {
MikamiUitOpen 6:38f7dce055d0 121 pwmout_pulsewidth_ms(&_pwm, ms);
MikamiUitOpen 6:38f7dce055d0 122 }
MikamiUitOpen 6:38f7dce055d0 123
MikamiUitOpen 6:38f7dce055d0 124 /** Set the PWM pulsewidth, specified in micro-seconds (int), keeping the period the same.
MikamiUitOpen 6:38f7dce055d0 125 */
MikamiUitOpen 6:38f7dce055d0 126 void pulsewidth_us(int us) {
MikamiUitOpen 6:38f7dce055d0 127 pwmout_pulsewidth_us(&_pwm, us);
MikamiUitOpen 6:38f7dce055d0 128 }
MikamiUitOpen 6:38f7dce055d0 129
MikamiUitOpen 6:38f7dce055d0 130 #ifdef MBED_OPERATORS
MikamiUitOpen 6:38f7dce055d0 131 /** A operator shorthand for write()
MikamiUitOpen 6:38f7dce055d0 132 */
MikamiUitOpen 6:38f7dce055d0 133 PwmOut& operator= (float value) {
MikamiUitOpen 6:38f7dce055d0 134 write(value);
MikamiUitOpen 6:38f7dce055d0 135 return *this;
MikamiUitOpen 6:38f7dce055d0 136 }
MikamiUitOpen 6:38f7dce055d0 137
MikamiUitOpen 6:38f7dce055d0 138 PwmOut& operator= (PwmOut& rhs) {
MikamiUitOpen 6:38f7dce055d0 139 write(rhs.read());
MikamiUitOpen 6:38f7dce055d0 140 return *this;
MikamiUitOpen 6:38f7dce055d0 141 }
MikamiUitOpen 6:38f7dce055d0 142
MikamiUitOpen 6:38f7dce055d0 143 /** An operator shorthand for read()
MikamiUitOpen 6:38f7dce055d0 144 */
MikamiUitOpen 6:38f7dce055d0 145 operator float() {
MikamiUitOpen 6:38f7dce055d0 146 return read();
MikamiUitOpen 6:38f7dce055d0 147 }
MikamiUitOpen 6:38f7dce055d0 148 #endif
MikamiUitOpen 6:38f7dce055d0 149
MikamiUitOpen 6:38f7dce055d0 150 protected:
MikamiUitOpen 6:38f7dce055d0 151 pwmout_t _pwm;
MikamiUitOpen 6:38f7dce055d0 152 };
MikamiUitOpen 6:38f7dce055d0 153
MikamiUitOpen 6:38f7dce055d0 154 } // namespace mbed
MikamiUitOpen 6:38f7dce055d0 155
MikamiUitOpen 6:38f7dce055d0 156 #endif
MikamiUitOpen 6:38f7dce055d0 157
MikamiUitOpen 6:38f7dce055d0 158 #endif