不韋 呂 / F746_SD_BitmapViewer

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Dependencies:   SDFileSystem_Warning_Fixed F746_GUI

mbed_src_STM32F7/api/PwmOut.h@1:bb146d5fe9aa, 2018-10-23 (annotated)

Committer:
MikamiUitOpen
Date:
Tue Oct 23 11:51:47 2018 +0000
Revision:
1:bb146d5fe9aa
Parent:
0:f62ffd3644bf 
2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:f62ffd3644bf 1 /* mbed Microcontroller Library
MikamiUitOpen 0:f62ffd3644bf 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:f62ffd3644bf 3 *
MikamiUitOpen 0:f62ffd3644bf 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:f62ffd3644bf 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:f62ffd3644bf 6 * You may obtain a copy of the License at
MikamiUitOpen 0:f62ffd3644bf 7 *
MikamiUitOpen 0:f62ffd3644bf 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:f62ffd3644bf 9 *
MikamiUitOpen 0:f62ffd3644bf 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:f62ffd3644bf 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:f62ffd3644bf 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:f62ffd3644bf 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:f62ffd3644bf 14 * limitations under the License.
MikamiUitOpen 0:f62ffd3644bf 15 */
MikamiUitOpen 0:f62ffd3644bf 16 #ifndef MBED_PWMOUT_H
MikamiUitOpen 0:f62ffd3644bf 17 #define MBED_PWMOUT_H
MikamiUitOpen 0:f62ffd3644bf 18
MikamiUitOpen 0:f62ffd3644bf 19 #include "platform.h"
MikamiUitOpen 0:f62ffd3644bf 20
MikamiUitOpen 0:f62ffd3644bf 21 #if DEVICE_PWMOUT
MikamiUitOpen 0:f62ffd3644bf 22 #include "pwmout_api.h"
MikamiUitOpen 0:f62ffd3644bf 23
MikamiUitOpen 0:f62ffd3644bf 24 namespace mbed {
MikamiUitOpen 0:f62ffd3644bf 25
MikamiUitOpen 0:f62ffd3644bf 26 /** A pulse-width modulation digital output
MikamiUitOpen 0:f62ffd3644bf 27 *
MikamiUitOpen 0:f62ffd3644bf 28 * Example
MikamiUitOpen 0:f62ffd3644bf 29 * @code
MikamiUitOpen 0:f62ffd3644bf 30 * // Fade a led on.
MikamiUitOpen 0:f62ffd3644bf 31 * #include "mbed.h"
MikamiUitOpen 0:f62ffd3644bf 32 *
MikamiUitOpen 0:f62ffd3644bf 33 * PwmOut led(LED1);
MikamiUitOpen 0:f62ffd3644bf 34 *
MikamiUitOpen 0:f62ffd3644bf 35 * int main() {
MikamiUitOpen 0:f62ffd3644bf 36 * while(1) {
MikamiUitOpen 0:f62ffd3644bf 37 * led = led + 0.01;
MikamiUitOpen 0:f62ffd3644bf 38 * wait(0.2);
MikamiUitOpen 0:f62ffd3644bf 39 * if(led == 1.0) {
MikamiUitOpen 0:f62ffd3644bf 40 * led = 0;
MikamiUitOpen 0:f62ffd3644bf 41 * }
MikamiUitOpen 0:f62ffd3644bf 42 * }
MikamiUitOpen 0:f62ffd3644bf 43 * }
MikamiUitOpen 0:f62ffd3644bf 44 * @endcode
MikamiUitOpen 0:f62ffd3644bf 45 *
MikamiUitOpen 0:f62ffd3644bf 46 * @note
MikamiUitOpen 0:f62ffd3644bf 47 * On the LPC1768 and LPC2368, the PWMs all share the same
MikamiUitOpen 0:f62ffd3644bf 48 * period - if you change the period for one, you change it for all.
MikamiUitOpen 0:f62ffd3644bf 49 * Although routines that change the period maintain the duty cycle
MikamiUitOpen 0:f62ffd3644bf 50 * for its PWM, all other PWMs will require their duty cycle to be
MikamiUitOpen 0:f62ffd3644bf 51 * refreshed.
MikamiUitOpen 0:f62ffd3644bf 52 */
MikamiUitOpen 0:f62ffd3644bf 53 class PwmOut {
MikamiUitOpen 0:f62ffd3644bf 54
MikamiUitOpen 0:f62ffd3644bf 55 public:
MikamiUitOpen 0:f62ffd3644bf 56
MikamiUitOpen 0:f62ffd3644bf 57 /** Create a PwmOut connected to the specified pin
MikamiUitOpen 0:f62ffd3644bf 58 *
MikamiUitOpen 0:f62ffd3644bf 59 * @param pin PwmOut pin to connect to
MikamiUitOpen 0:f62ffd3644bf 60 */
MikamiUitOpen 0:f62ffd3644bf 61 PwmOut(PinName pin) {
MikamiUitOpen 0:f62ffd3644bf 62 pwmout_init(&_pwm, pin);
MikamiUitOpen 0:f62ffd3644bf 63 }
MikamiUitOpen 0:f62ffd3644bf 64
MikamiUitOpen 0:f62ffd3644bf 65 /** Set the ouput duty-cycle, specified as a percentage (float)
MikamiUitOpen 0:f62ffd3644bf 66 *
MikamiUitOpen 0:f62ffd3644bf 67 * @param value A floating-point value representing the output duty-cycle,
MikamiUitOpen 0:f62ffd3644bf 68 * specified as a percentage. The value should lie between
MikamiUitOpen 0:f62ffd3644bf 69 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
MikamiUitOpen 0:f62ffd3644bf 70 * Values outside this range will be saturated to 0.0f or 1.0f.
MikamiUitOpen 0:f62ffd3644bf 71 */
MikamiUitOpen 0:f62ffd3644bf 72 void write(float value) {
MikamiUitOpen 0:f62ffd3644bf 73 pwmout_write(&_pwm, value);
MikamiUitOpen 0:f62ffd3644bf 74 }
MikamiUitOpen 0:f62ffd3644bf 75
MikamiUitOpen 0:f62ffd3644bf 76 /** Return the current output duty-cycle setting, measured as a percentage (float)
MikamiUitOpen 0:f62ffd3644bf 77 *
MikamiUitOpen 0:f62ffd3644bf 78 * @returns
MikamiUitOpen 0:f62ffd3644bf 79 * A floating-point value representing the current duty-cycle being output on the pin,
MikamiUitOpen 0:f62ffd3644bf 80 * measured as a percentage. The returned value will lie between
MikamiUitOpen 0:f62ffd3644bf 81 * 0.0f (representing on 0%) and 1.0f (representing on 100%).
MikamiUitOpen 0:f62ffd3644bf 82 *
MikamiUitOpen 0:f62ffd3644bf 83 * @note
MikamiUitOpen 0:f62ffd3644bf 84 * This value may not match exactly the value set by a previous <write>.
MikamiUitOpen 0:f62ffd3644bf 85 */
MikamiUitOpen 0:f62ffd3644bf 86 float read() {
MikamiUitOpen 0:f62ffd3644bf 87 return pwmout_read(&_pwm);
MikamiUitOpen 0:f62ffd3644bf 88 }
MikamiUitOpen 0:f62ffd3644bf 89
MikamiUitOpen 0:f62ffd3644bf 90 /** Set the PWM period, specified in seconds (float), keeping the duty cycle the same.
MikamiUitOpen 0:f62ffd3644bf 91 *
MikamiUitOpen 0:f62ffd3644bf 92 * @note
MikamiUitOpen 0:f62ffd3644bf 93 * The resolution is currently in microseconds; periods smaller than this
MikamiUitOpen 0:f62ffd3644bf 94 * will be set to zero.
MikamiUitOpen 0:f62ffd3644bf 95 */
MikamiUitOpen 0:f62ffd3644bf 96 void period(float seconds) {
MikamiUitOpen 0:f62ffd3644bf 97 pwmout_period(&_pwm, seconds);
MikamiUitOpen 0:f62ffd3644bf 98 }
MikamiUitOpen 0:f62ffd3644bf 99
MikamiUitOpen 0:f62ffd3644bf 100 /** Set the PWM period, specified in milli-seconds (int), keeping the duty cycle the same.
MikamiUitOpen 0:f62ffd3644bf 101 */
MikamiUitOpen 0:f62ffd3644bf 102 void period_ms(int ms) {
MikamiUitOpen 0:f62ffd3644bf 103 pwmout_period_ms(&_pwm, ms);
MikamiUitOpen 0:f62ffd3644bf 104 }
MikamiUitOpen 0:f62ffd3644bf 105
MikamiUitOpen 0:f62ffd3644bf 106 /** Set the PWM period, specified in micro-seconds (int), keeping the duty cycle the same.
MikamiUitOpen 0:f62ffd3644bf 107 */
MikamiUitOpen 0:f62ffd3644bf 108 void period_us(int us) {
MikamiUitOpen 0:f62ffd3644bf 109 pwmout_period_us(&_pwm, us);
MikamiUitOpen 0:f62ffd3644bf 110 }
MikamiUitOpen 0:f62ffd3644bf 111
MikamiUitOpen 0:f62ffd3644bf 112 /** Set the PWM pulsewidth, specified in seconds (float), keeping the period the same.
MikamiUitOpen 0:f62ffd3644bf 113 */
MikamiUitOpen 0:f62ffd3644bf 114 void pulsewidth(float seconds) {
MikamiUitOpen 0:f62ffd3644bf 115 pwmout_pulsewidth(&_pwm, seconds);
MikamiUitOpen 0:f62ffd3644bf 116 }
MikamiUitOpen 0:f62ffd3644bf 117
MikamiUitOpen 0:f62ffd3644bf 118 /** Set the PWM pulsewidth, specified in milli-seconds (int), keeping the period the same.
MikamiUitOpen 0:f62ffd3644bf 119 */
MikamiUitOpen 0:f62ffd3644bf 120 void pulsewidth_ms(int ms) {
MikamiUitOpen 0:f62ffd3644bf 121 pwmout_pulsewidth_ms(&_pwm, ms);
MikamiUitOpen 0:f62ffd3644bf 122 }
MikamiUitOpen 0:f62ffd3644bf 123
MikamiUitOpen 0:f62ffd3644bf 124 /** Set the PWM pulsewidth, specified in micro-seconds (int), keeping the period the same.
MikamiUitOpen 0:f62ffd3644bf 125 */
MikamiUitOpen 0:f62ffd3644bf 126 void pulsewidth_us(int us) {
MikamiUitOpen 0:f62ffd3644bf 127 pwmout_pulsewidth_us(&_pwm, us);
MikamiUitOpen 0:f62ffd3644bf 128 }
MikamiUitOpen 0:f62ffd3644bf 129
MikamiUitOpen 0:f62ffd3644bf 130 #ifdef MBED_OPERATORS
MikamiUitOpen 0:f62ffd3644bf 131 /** A operator shorthand for write()
MikamiUitOpen 0:f62ffd3644bf 132 */
MikamiUitOpen 0:f62ffd3644bf 133 PwmOut& operator= (float value) {
MikamiUitOpen 0:f62ffd3644bf 134 write(value);
MikamiUitOpen 0:f62ffd3644bf 135 return *this;
MikamiUitOpen 0:f62ffd3644bf 136 }
MikamiUitOpen 0:f62ffd3644bf 137
MikamiUitOpen 0:f62ffd3644bf 138 PwmOut& operator= (PwmOut& rhs) {
MikamiUitOpen 0:f62ffd3644bf 139 write(rhs.read());
MikamiUitOpen 0:f62ffd3644bf 140 return *this;
MikamiUitOpen 0:f62ffd3644bf 141 }
MikamiUitOpen 0:f62ffd3644bf 142
MikamiUitOpen 0:f62ffd3644bf 143 /** An operator shorthand for read()
MikamiUitOpen 0:f62ffd3644bf 144 */
MikamiUitOpen 0:f62ffd3644bf 145 operator float() {
MikamiUitOpen 0:f62ffd3644bf 146 return read();
MikamiUitOpen 0:f62ffd3644bf 147 }
MikamiUitOpen 0:f62ffd3644bf 148 #endif
MikamiUitOpen 0:f62ffd3644bf 149
MikamiUitOpen 0:f62ffd3644bf 150 protected:
MikamiUitOpen 0:f62ffd3644bf 151 pwmout_t _pwm;
MikamiUitOpen 0:f62ffd3644bf 152 };
MikamiUitOpen 0:f62ffd3644bf 153
MikamiUitOpen 0:f62ffd3644bf 154 } // namespace mbed
MikamiUitOpen 0:f62ffd3644bf 155
MikamiUitOpen 0:f62ffd3644bf 156 #endif
MikamiUitOpen 0:f62ffd3644bf 157
MikamiUitOpen 0:f62ffd3644bf 158 #endif