不韋 呂 / F746_SD_Player_Demo

Demo program for library named SD_PlayerSkeleton of SD card player skeleton. SD カードプレーヤのための骨組みとして使うためのライブラリ SD_PlayerSkeleton の使用例．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7月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton

mbed_src_STM32F7/api/PwmOut.h@19:3c3833ec00d2, 2017-04-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Apr 09 12:44:17 2017 +0000
Revision:
19:3c3833ec00d2
Parent:
2:cf42e62a97dc 
20

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:cf42e62a97dc 1 /* mbed Microcontroller Library
MikamiUitOpen 2:cf42e62a97dc 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 2:cf42e62a97dc 3 *
MikamiUitOpen 2:cf42e62a97dc 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:cf42e62a97dc 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:cf42e62a97dc 6 * You may obtain a copy of the License at
MikamiUitOpen 2:cf42e62a97dc 7 *
MikamiUitOpen 2:cf42e62a97dc 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:cf42e62a97dc 9 *
MikamiUitOpen 2:cf42e62a97dc 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:cf42e62a97dc 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:cf42e62a97dc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:cf42e62a97dc 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:cf42e62a97dc 14 * limitations under the License.
MikamiUitOpen 2:cf42e62a97dc 15 */
MikamiUitOpen 2:cf42e62a97dc 16 #ifndef MBED_PWMOUT_H
MikamiUitOpen 2:cf42e62a97dc 17 #define MBED_PWMOUT_H
MikamiUitOpen 2:cf42e62a97dc 18
MikamiUitOpen 2:cf42e62a97dc 19 #include "platform.h"
MikamiUitOpen 2:cf42e62a97dc 20
MikamiUitOpen 2:cf42e62a97dc 21 #if DEVICE_PWMOUT
MikamiUitOpen 2:cf42e62a97dc 22 #include "pwmout_api.h"
MikamiUitOpen 2:cf42e62a97dc 23
MikamiUitOpen 2:cf42e62a97dc 24 namespace mbed {
MikamiUitOpen 2:cf42e62a97dc 25
MikamiUitOpen 2:cf42e62a97dc 26 /** A pulse-width modulation digital output
MikamiUitOpen 2:cf42e62a97dc 27 *
MikamiUitOpen 2:cf42e62a97dc 28 * Example
MikamiUitOpen 2:cf42e62a97dc 29 * @code
MikamiUitOpen 2:cf42e62a97dc 30 * // Fade a led on.
MikamiUitOpen 2:cf42e62a97dc 31 * #include "mbed.h"
MikamiUitOpen 2:cf42e62a97dc 32 *
MikamiUitOpen 2:cf42e62a97dc 33 * PwmOut led(LED1);
MikamiUitOpen 2:cf42e62a97dc 34 *
MikamiUitOpen 2:cf42e62a97dc 35 * int main() {
MikamiUitOpen 2:cf42e62a97dc 36 * while(1) {
MikamiUitOpen 2:cf42e62a97dc 37 * led = led + 0.01;
MikamiUitOpen 2:cf42e62a97dc 38 * wait(0.2);
MikamiUitOpen 2:cf42e62a97dc 39 * if(led == 1.0) {
MikamiUitOpen 2:cf42e62a97dc 40 * led = 0;
MikamiUitOpen 2:cf42e62a97dc 41 * }
MikamiUitOpen 2:cf42e62a97dc 42 * }
MikamiUitOpen 2:cf42e62a97dc 43 * }
MikamiUitOpen 2:cf42e62a97dc 44 * @endcode
MikamiUitOpen 2:cf42e62a97dc 45 *
MikamiUitOpen 2:cf42e62a97dc 46 * @note
MikamiUitOpen 2:cf42e62a97dc 47 * On the LPC1768 and LPC2368, the PWMs all share the same
MikamiUitOpen 2:cf42e62a97dc 48 * period - if you change the period for one, you change it for all.
MikamiUitOpen 2:cf42e62a97dc 49 * Although routines that change the period maintain the duty cycle
MikamiUitOpen 2:cf42e62a97dc 50 * for its PWM, all other PWMs will require their duty cycle to be
MikamiUitOpen 2:cf42e62a97dc 51 * refreshed.
MikamiUitOpen 2:cf42e62a97dc 52 */
MikamiUitOpen 2:cf42e62a97dc 53 class PwmOut {
MikamiUitOpen 2:cf42e62a97dc 54
MikamiUitOpen 2:cf42e62a97dc 55 public:
MikamiUitOpen 2:cf42e62a97dc 56
MikamiUitOpen 2:cf42e62a97dc 57 /** Create a PwmOut connected to the specified pin
MikamiUitOpen 2:cf42e62a97dc 58 *
MikamiUitOpen 2:cf42e62a97dc 59 * @param pin PwmOut pin to connect to
MikamiUitOpen 2:cf42e62a97dc 60 */
MikamiUitOpen 2:cf42e62a97dc 61 PwmOut(PinName pin) {
MikamiUitOpen 2:cf42e62a97dc 62 pwmout_init(&_pwm, pin);
MikamiUitOpen 2:cf42e62a97dc 63 }
MikamiUitOpen 2:cf42e62a97dc 64
MikamiUitOpen 2:cf42e62a97dc 65 /** Set the ouput duty-cycle, specified as a percentage (float)
MikamiUitOpen 2:cf42e62a97dc 66 *
MikamiUitOpen 2:cf42e62a97dc 67 * @param value A floating-point value representing the output duty-cycle,
MikamiUitOpen 2:cf42e62a97dc 68 * specified as a percentage. The value should lie between
MikamiUitOpen 2:cf42e62a97dc 69 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
MikamiUitOpen 2:cf42e62a97dc 70 * Values outside this range will be saturated to 0.0f or 1.0f.
MikamiUitOpen 2:cf42e62a97dc 71 */
MikamiUitOpen 2:cf42e62a97dc 72 void write(float value) {
MikamiUitOpen 2:cf42e62a97dc 73 pwmout_write(&_pwm, value);
MikamiUitOpen 2:cf42e62a97dc 74 }
MikamiUitOpen 2:cf42e62a97dc 75
MikamiUitOpen 2:cf42e62a97dc 76 /** Return the current output duty-cycle setting, measured as a percentage (float)
MikamiUitOpen 2:cf42e62a97dc 77 *
MikamiUitOpen 2:cf42e62a97dc 78 * @returns
MikamiUitOpen 2:cf42e62a97dc 79 * A floating-point value representing the current duty-cycle being output on the pin,
MikamiUitOpen 2:cf42e62a97dc 80 * measured as a percentage. The returned value will lie between
MikamiUitOpen 2:cf42e62a97dc 81 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
MikamiUitOpen 2:cf42e62a97dc 82 *
MikamiUitOpen 2:cf42e62a97dc 83 * @note
MikamiUitOpen 2:cf42e62a97dc 84 * This value may not match exactly the value set by a previous <write>.
MikamiUitOpen 2:cf42e62a97dc 85 */
MikamiUitOpen 2:cf42e62a97dc 86 float read() {
MikamiUitOpen 2:cf42e62a97dc 87 return pwmout_read(&_pwm);
MikamiUitOpen 2:cf42e62a97dc 88 }
MikamiUitOpen 2:cf42e62a97dc 89
MikamiUitOpen 2:cf42e62a97dc 90 /** Set the PWM period, specified in seconds (float), keeping the duty cycle the same.
MikamiUitOpen 2:cf42e62a97dc 91 *
MikamiUitOpen 2:cf42e62a97dc 92 * @note
MikamiUitOpen 2:cf42e62a97dc 93 * The resolution is currently in microseconds; periods smaller than this
MikamiUitOpen 2:cf42e62a97dc 94 * will be set to zero.
MikamiUitOpen 2:cf42e62a97dc 95 */
MikamiUitOpen 2:cf42e62a97dc 96 void period(float seconds) {
MikamiUitOpen 2:cf42e62a97dc 97 pwmout_period(&_pwm, seconds);
MikamiUitOpen 2:cf42e62a97dc 98 }
MikamiUitOpen 2:cf42e62a97dc 99
MikamiUitOpen 2:cf42e62a97dc 100 /** Set the PWM period, specified in milli-seconds (int), keeping the duty cycle the same.
MikamiUitOpen 2:cf42e62a97dc 101 */
MikamiUitOpen 2:cf42e62a97dc 102 void period_ms(int ms) {
MikamiUitOpen 2:cf42e62a97dc 103 pwmout_period_ms(&_pwm, ms);
MikamiUitOpen 2:cf42e62a97dc 104 }
MikamiUitOpen 2:cf42e62a97dc 105
MikamiUitOpen 2:cf42e62a97dc 106 /** Set the PWM period, specified in micro-seconds (int), keeping the duty cycle the same.
MikamiUitOpen 2:cf42e62a97dc 107 */
MikamiUitOpen 2:cf42e62a97dc 108 void period_us(int us) {
MikamiUitOpen 2:cf42e62a97dc 109 pwmout_period_us(&_pwm, us);
MikamiUitOpen 2:cf42e62a97dc 110 }
MikamiUitOpen 2:cf42e62a97dc 111
MikamiUitOpen 2:cf42e62a97dc 112 /** Set the PWM pulsewidth, specified in seconds (float), keeping the period the same.
MikamiUitOpen 2:cf42e62a97dc 113 */
MikamiUitOpen 2:cf42e62a97dc 114 void pulsewidth(float seconds) {
MikamiUitOpen 2:cf42e62a97dc 115 pwmout_pulsewidth(&_pwm, seconds);
MikamiUitOpen 2:cf42e62a97dc 116 }
MikamiUitOpen 2:cf42e62a97dc 117
MikamiUitOpen 2:cf42e62a97dc 118 /** Set the PWM pulsewidth, specified in milli-seconds (int), keeping the period the same.
MikamiUitOpen 2:cf42e62a97dc 119 */
MikamiUitOpen 2:cf42e62a97dc 120 void pulsewidth_ms(int ms) {
MikamiUitOpen 2:cf42e62a97dc 121 pwmout_pulsewidth_ms(&_pwm, ms);
MikamiUitOpen 2:cf42e62a97dc 122 }
MikamiUitOpen 2:cf42e62a97dc 123
MikamiUitOpen 2:cf42e62a97dc 124 /** Set the PWM pulsewidth, specified in micro-seconds (int), keeping the period the same.
MikamiUitOpen 2:cf42e62a97dc 125 */
MikamiUitOpen 2:cf42e62a97dc 126 void pulsewidth_us(int us) {
MikamiUitOpen 2:cf42e62a97dc 127 pwmout_pulsewidth_us(&_pwm, us);
MikamiUitOpen 2:cf42e62a97dc 128 }
MikamiUitOpen 2:cf42e62a97dc 129
MikamiUitOpen 2:cf42e62a97dc 130 #ifdef MBED_OPERATORS
MikamiUitOpen 2:cf42e62a97dc 131 /** A operator shorthand for write()
MikamiUitOpen 2:cf42e62a97dc 132 */
MikamiUitOpen 2:cf42e62a97dc 133 PwmOut& operator= (float value) {
MikamiUitOpen 2:cf42e62a97dc 134 write(value);
MikamiUitOpen 2:cf42e62a97dc 135 return *this;
MikamiUitOpen 2:cf42e62a97dc 136 }
MikamiUitOpen 2:cf42e62a97dc 137
MikamiUitOpen 2:cf42e62a97dc 138 PwmOut& operator= (PwmOut& rhs) {
MikamiUitOpen 2:cf42e62a97dc 139 write(rhs.read());
MikamiUitOpen 2:cf42e62a97dc 140 return *this;
MikamiUitOpen 2:cf42e62a97dc 141 }
MikamiUitOpen 2:cf42e62a97dc 142
MikamiUitOpen 2:cf42e62a97dc 143 /** An operator shorthand for read()
MikamiUitOpen 2:cf42e62a97dc 144 */
MikamiUitOpen 2:cf42e62a97dc 145 operator float() {
MikamiUitOpen 2:cf42e62a97dc 146 return read();
MikamiUitOpen 2:cf42e62a97dc 147 }
MikamiUitOpen 2:cf42e62a97dc 148 #endif
MikamiUitOpen 2:cf42e62a97dc 149
MikamiUitOpen 2:cf42e62a97dc 150 protected:
MikamiUitOpen 2:cf42e62a97dc 151 pwmout_t _pwm;
MikamiUitOpen 2:cf42e62a97dc 152 };
MikamiUitOpen 2:cf42e62a97dc 153
MikamiUitOpen 2:cf42e62a97dc 154 } // namespace mbed
MikamiUitOpen 2:cf42e62a97dc 155
MikamiUitOpen 2:cf42e62a97dc 156 #endif
MikamiUitOpen 2:cf42e62a97dc 157
MikamiUitOpen 2:cf42e62a97dc 158 #endif