Knight KE / Mbed OS Game_Master

游戏王对战板，目前code还是空的

mbed-os/drivers/DigitalInOut.h@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /* mbed Microcontroller Library
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2006-2013 ARM Limited
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Licensed under the Apache License, Version 2.0 (the "License");
WFKnight 0:9b3d4731edbb 5 * you may not use this file except in compliance with the License.
WFKnight 0:9b3d4731edbb 6 * You may obtain a copy of the License at
WFKnight 0:9b3d4731edbb 7 *
WFKnight 0:9b3d4731edbb 8 * http://www.apache.org/licenses/LICENSE-2.0
WFKnight 0:9b3d4731edbb 9 *
WFKnight 0:9b3d4731edbb 10 * Unless required by applicable law or agreed to in writing, software
WFKnight 0:9b3d4731edbb 11 * distributed under the License is distributed on an "AS IS" BASIS,
WFKnight 0:9b3d4731edbb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
WFKnight 0:9b3d4731edbb 13 * See the License for the specific language governing permissions and
WFKnight 0:9b3d4731edbb 14 * limitations under the License.
WFKnight 0:9b3d4731edbb 15 */
WFKnight 0:9b3d4731edbb 16 #ifndef MBED_DIGITALINOUT_H
WFKnight 0:9b3d4731edbb 17 #define MBED_DIGITALINOUT_H
WFKnight 0:9b3d4731edbb 18
WFKnight 0:9b3d4731edbb 19 #include "platform/platform.h"
WFKnight 0:9b3d4731edbb 20
WFKnight 0:9b3d4731edbb 21 #include "hal/gpio_api.h"
WFKnight 0:9b3d4731edbb 22 #include "platform/mbed_critical.h"
WFKnight 0:9b3d4731edbb 23
WFKnight 0:9b3d4731edbb 24 namespace mbed {
WFKnight 0:9b3d4731edbb 25 /** \addtogroup drivers */
WFKnight 0:9b3d4731edbb 26
WFKnight 0:9b3d4731edbb 27 /** A digital input/output, used for setting or reading a bi-directional pin
WFKnight 0:9b3d4731edbb 28 *
WFKnight 0:9b3d4731edbb 29 * @note Synchronization level: Interrupt safe
WFKnight 0:9b3d4731edbb 30 * @ingroup drivers
WFKnight 0:9b3d4731edbb 31 */
WFKnight 0:9b3d4731edbb 32 class DigitalInOut {
WFKnight 0:9b3d4731edbb 33
WFKnight 0:9b3d4731edbb 34 public:
WFKnight 0:9b3d4731edbb 35 /** Create a DigitalInOut connected to the specified pin
WFKnight 0:9b3d4731edbb 36 *
WFKnight 0:9b3d4731edbb 37 * @param pin DigitalInOut pin to connect to
WFKnight 0:9b3d4731edbb 38 */
WFKnight 0:9b3d4731edbb 39 DigitalInOut(PinName pin) : gpio() {
WFKnight 0:9b3d4731edbb 40 // No lock needed in the constructor
WFKnight 0:9b3d4731edbb 41 gpio_init_in(&gpio, pin);
WFKnight 0:9b3d4731edbb 42 }
WFKnight 0:9b3d4731edbb 43
WFKnight 0:9b3d4731edbb 44 /** Create a DigitalInOut connected to the specified pin
WFKnight 0:9b3d4731edbb 45 *
WFKnight 0:9b3d4731edbb 46 * @param pin DigitalInOut pin to connect to
WFKnight 0:9b3d4731edbb 47 * @param direction the initial direction of the pin
WFKnight 0:9b3d4731edbb 48 * @param mode the initial mode of the pin
WFKnight 0:9b3d4731edbb 49 * @param value the initial value of the pin if is an output
WFKnight 0:9b3d4731edbb 50 */
WFKnight 0:9b3d4731edbb 51 DigitalInOut(PinName pin, PinDirection direction, PinMode mode, int value) : gpio() {
WFKnight 0:9b3d4731edbb 52 // No lock needed in the constructor
WFKnight 0:9b3d4731edbb 53 gpio_init_inout(&gpio, pin, direction, mode, value);
WFKnight 0:9b3d4731edbb 54 }
WFKnight 0:9b3d4731edbb 55
WFKnight 0:9b3d4731edbb 56 /** Set the output, specified as 0 or 1 (int)
WFKnight 0:9b3d4731edbb 57 *
WFKnight 0:9b3d4731edbb 58 * @param value An integer specifying the pin output value,
WFKnight 0:9b3d4731edbb 59 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
WFKnight 0:9b3d4731edbb 60 */
WFKnight 0:9b3d4731edbb 61 void write(int value) {
WFKnight 0:9b3d4731edbb 62 // Thread safe / atomic HAL call
WFKnight 0:9b3d4731edbb 63 gpio_write(&gpio, value);
WFKnight 0:9b3d4731edbb 64 }
WFKnight 0:9b3d4731edbb 65
WFKnight 0:9b3d4731edbb 66 /** Return the output setting, represented as 0 or 1 (int)
WFKnight 0:9b3d4731edbb 67 *
WFKnight 0:9b3d4731edbb 68 * @returns
WFKnight 0:9b3d4731edbb 69 * an integer representing the output setting of the pin if it is an output,
WFKnight 0:9b3d4731edbb 70 * or read the input if set as an input
WFKnight 0:9b3d4731edbb 71 */
WFKnight 0:9b3d4731edbb 72 int read() {
WFKnight 0:9b3d4731edbb 73 // Thread safe / atomic HAL call
WFKnight 0:9b3d4731edbb 74 return gpio_read(&gpio);
WFKnight 0:9b3d4731edbb 75 }
WFKnight 0:9b3d4731edbb 76
WFKnight 0:9b3d4731edbb 77 /** Set as an output
WFKnight 0:9b3d4731edbb 78 */
WFKnight 0:9b3d4731edbb 79 void output() {
WFKnight 0:9b3d4731edbb 80 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 81 gpio_dir(&gpio, PIN_OUTPUT);
WFKnight 0:9b3d4731edbb 82 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 83 }
WFKnight 0:9b3d4731edbb 84
WFKnight 0:9b3d4731edbb 85 /** Set as an input
WFKnight 0:9b3d4731edbb 86 */
WFKnight 0:9b3d4731edbb 87 void input() {
WFKnight 0:9b3d4731edbb 88 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 89 gpio_dir(&gpio, PIN_INPUT);
WFKnight 0:9b3d4731edbb 90 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 91 }
WFKnight 0:9b3d4731edbb 92
WFKnight 0:9b3d4731edbb 93 /** Set the input pin mode
WFKnight 0:9b3d4731edbb 94 *
WFKnight 0:9b3d4731edbb 95 * @param pull PullUp, PullDown, PullNone, OpenDrain
WFKnight 0:9b3d4731edbb 96 */
WFKnight 0:9b3d4731edbb 97 void mode(PinMode pull) {
WFKnight 0:9b3d4731edbb 98 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 99 gpio_mode(&gpio, pull);
WFKnight 0:9b3d4731edbb 100 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 101 }
WFKnight 0:9b3d4731edbb 102
WFKnight 0:9b3d4731edbb 103 /** Return the output setting, represented as 0 or 1 (int)
WFKnight 0:9b3d4731edbb 104 *
WFKnight 0:9b3d4731edbb 105 * @returns
WFKnight 0:9b3d4731edbb 106 * Non zero value if pin is connected to uc GPIO
WFKnight 0:9b3d4731edbb 107 * 0 if gpio object was initialized with NC
WFKnight 0:9b3d4731edbb 108 */
WFKnight 0:9b3d4731edbb 109 int is_connected() {
WFKnight 0:9b3d4731edbb 110 // Thread safe / atomic HAL call
WFKnight 0:9b3d4731edbb 111 return gpio_is_connected(&gpio);
WFKnight 0:9b3d4731edbb 112 }
WFKnight 0:9b3d4731edbb 113
WFKnight 0:9b3d4731edbb 114 /** A shorthand for write()
WFKnight 0:9b3d4731edbb 115 * \sa DigitalInOut::write()
WFKnight 0:9b3d4731edbb 116 */
WFKnight 0:9b3d4731edbb 117 DigitalInOut& operator= (int value) {
WFKnight 0:9b3d4731edbb 118 // Underlying write is thread safe
WFKnight 0:9b3d4731edbb 119 write(value);
WFKnight 0:9b3d4731edbb 120 return *this;
WFKnight 0:9b3d4731edbb 121 }
WFKnight 0:9b3d4731edbb 122
WFKnight 0:9b3d4731edbb 123 /** A shorthand for write()
WFKnight 0:9b3d4731edbb 124 * \sa DigitalInOut::write()
WFKnight 0:9b3d4731edbb 125 */
WFKnight 0:9b3d4731edbb 126 DigitalInOut& operator= (DigitalInOut& rhs) {
WFKnight 0:9b3d4731edbb 127 core_util_critical_section_enter();
WFKnight 0:9b3d4731edbb 128 write(rhs.read());
WFKnight 0:9b3d4731edbb 129 core_util_critical_section_exit();
WFKnight 0:9b3d4731edbb 130 return *this;
WFKnight 0:9b3d4731edbb 131 }
WFKnight 0:9b3d4731edbb 132
WFKnight 0:9b3d4731edbb 133 /** A shorthand for read()
WFKnight 0:9b3d4731edbb 134 * \sa DigitalInOut::read()
WFKnight 0:9b3d4731edbb 135 */
WFKnight 0:9b3d4731edbb 136 operator int() {
WFKnight 0:9b3d4731edbb 137 // Underlying call is thread safe
WFKnight 0:9b3d4731edbb 138 return read();
WFKnight 0:9b3d4731edbb 139 }
WFKnight 0:9b3d4731edbb 140
WFKnight 0:9b3d4731edbb 141 protected:
WFKnight 0:9b3d4731edbb 142 gpio_t gpio;
WFKnight 0:9b3d4731edbb 143 };
WFKnight 0:9b3d4731edbb 144
WFKnight 0:9b3d4731edbb 145 } // namespace mbed
WFKnight 0:9b3d4731edbb 146
WFKnight 0:9b3d4731edbb 147 #endif