Jhon Plantikow / DHT11

DHT11

InterruptIn.h@0:c52df770855b, 2015-08-13 (annotated)

Committer:
jhon309
Date:
Thu Aug 13 00:21:57 2015 +0000
Revision:
0:c52df770855b
DHT11

Who changed what in which revision?

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jhon309 0:c52df770855b 1 /* mbed Microcontroller Library
jhon309 0:c52df770855b 2 * Copyright (c) 2006-2013 ARM Limited
jhon309 0:c52df770855b 3 *
jhon309 0:c52df770855b 4 * Licensed under the Apache License, Version 2.0 (the "License");
jhon309 0:c52df770855b 5 * you may not use this file except in compliance with the License.
jhon309 0:c52df770855b 6 * You may obtain a copy of the License at
jhon309 0:c52df770855b 7 *
jhon309 0:c52df770855b 8 * http://www.apache.org/licenses/LICENSE-2.0
jhon309 0:c52df770855b 9 *
jhon309 0:c52df770855b 10 * Unless required by applicable law or agreed to in writing, software
jhon309 0:c52df770855b 11 * distributed under the License is distributed on an "AS IS" BASIS,
jhon309 0:c52df770855b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
jhon309 0:c52df770855b 13 * See the License for the specific language governing permissions and
jhon309 0:c52df770855b 14 * limitations under the License.
jhon309 0:c52df770855b 15 */
jhon309 0:c52df770855b 16 #ifndef MBED_INTERRUPTIN_H
jhon309 0:c52df770855b 17 #define MBED_INTERRUPTIN_H
jhon309 0:c52df770855b 18
jhon309 0:c52df770855b 19 #include "platform.h"
jhon309 0:c52df770855b 20
jhon309 0:c52df770855b 21 #if DEVICE_INTERRUPTIN
jhon309 0:c52df770855b 22
jhon309 0:c52df770855b 23 #include "gpio_api.h"
jhon309 0:c52df770855b 24 #include "gpio_irq_api.h"
jhon309 0:c52df770855b 25 #include "FunctionPointer.h"
jhon309 0:c52df770855b 26
jhon309 0:c52df770855b 27 namespace mbed {
jhon309 0:c52df770855b 28
jhon309 0:c52df770855b 29 /** A digital interrupt input, used to call a function on a rising or falling edge
jhon309 0:c52df770855b 30 *
jhon309 0:c52df770855b 31 * Example:
jhon309 0:c52df770855b 32 * @code
jhon309 0:c52df770855b 33 * // Flash an LED while waiting for events
jhon309 0:c52df770855b 34 *
jhon309 0:c52df770855b 35 * #include "mbed.h"
jhon309 0:c52df770855b 36 *
jhon309 0:c52df770855b 37 * InterruptIn event(p16);
jhon309 0:c52df770855b 38 * DigitalOut led(LED1);
jhon309 0:c52df770855b 39 *
jhon309 0:c52df770855b 40 * void trigger() {
jhon309 0:c52df770855b 41 * printf("triggered!\n");
jhon309 0:c52df770855b 42 * }
jhon309 0:c52df770855b 43 *
jhon309 0:c52df770855b 44 * int main() {
jhon309 0:c52df770855b 45 * event.rise(&trigger);
jhon309 0:c52df770855b 46 * while(1) {
jhon309 0:c52df770855b 47 * led = !led;
jhon309 0:c52df770855b 48 * wait(0.25);
jhon309 0:c52df770855b 49 * }
jhon309 0:c52df770855b 50 * }
jhon309 0:c52df770855b 51 * @endcode
jhon309 0:c52df770855b 52 */
jhon309 0:c52df770855b 53 class InterruptIn {
jhon309 0:c52df770855b 54
jhon309 0:c52df770855b 55 public:
jhon309 0:c52df770855b 56
jhon309 0:c52df770855b 57 /** Create an InterruptIn connected to the specified pin
jhon309 0:c52df770855b 58 *
jhon309 0:c52df770855b 59 * @param pin InterruptIn pin to connect to
jhon309 0:c52df770855b 60 * @param name (optional) A string to identify the object
jhon309 0:c52df770855b 61 */
jhon309 0:c52df770855b 62 InterruptIn(PinName pin);
jhon309 0:c52df770855b 63 virtual ~InterruptIn();
jhon309 0:c52df770855b 64
jhon309 0:c52df770855b 65 int read();
jhon309 0:c52df770855b 66 #ifdef MBED_OPERATORS
jhon309 0:c52df770855b 67 operator int();
jhon309 0:c52df770855b 68
jhon309 0:c52df770855b 69 #endif
jhon309 0:c52df770855b 70
jhon309 0:c52df770855b 71 /** Attach a function to call when a rising edge occurs on the input
jhon309 0:c52df770855b 72 *
jhon309 0:c52df770855b 73 * @param fptr A pointer to a void function, or 0 to set as none
jhon309 0:c52df770855b 74 */
jhon309 0:c52df770855b 75 void rise(void (*fptr)(void));
jhon309 0:c52df770855b 76
jhon309 0:c52df770855b 77 /** Attach a member function to call when a rising edge occurs on the input
jhon309 0:c52df770855b 78 *
jhon309 0:c52df770855b 79 * @param tptr pointer to the object to call the member function on
jhon309 0:c52df770855b 80 * @param mptr pointer to the member function to be called
jhon309 0:c52df770855b 81 */
jhon309 0:c52df770855b 82 template<typename T>
jhon309 0:c52df770855b 83 void rise(T* tptr, void (T::*mptr)(void)) {
jhon309 0:c52df770855b 84 _rise.attach(tptr, mptr);
jhon309 0:c52df770855b 85 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
jhon309 0:c52df770855b 86 }
jhon309 0:c52df770855b 87
jhon309 0:c52df770855b 88 /** Attach a function to call when a falling edge occurs on the input
jhon309 0:c52df770855b 89 *
jhon309 0:c52df770855b 90 * @param fptr A pointer to a void function, or 0 to set as none
jhon309 0:c52df770855b 91 */
jhon309 0:c52df770855b 92 void fall(void (*fptr)(void));
jhon309 0:c52df770855b 93
jhon309 0:c52df770855b 94 /** Attach a member function to call when a falling edge occurs on the input
jhon309 0:c52df770855b 95 *
jhon309 0:c52df770855b 96 * @param tptr pointer to the object to call the member function on
jhon309 0:c52df770855b 97 * @param mptr pointer to the member function to be called
jhon309 0:c52df770855b 98 */
jhon309 0:c52df770855b 99 template<typename T>
jhon309 0:c52df770855b 100 void fall(T* tptr, void (T::*mptr)(void)) {
jhon309 0:c52df770855b 101 _fall.attach(tptr, mptr);
jhon309 0:c52df770855b 102 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
jhon309 0:c52df770855b 103 }
jhon309 0:c52df770855b 104
jhon309 0:c52df770855b 105 /** Set the input pin mode
jhon309 0:c52df770855b 106 *
jhon309 0:c52df770855b 107 * @param mode PullUp, PullDown, PullNone
jhon309 0:c52df770855b 108 */
jhon309 0:c52df770855b 109 void mode(PinMode pull);
jhon309 0:c52df770855b 110
jhon309 0:c52df770855b 111 /** Enable IRQ. This method depends on hw implementation, might enable one
jhon309 0:c52df770855b 112 * port interrupts. For further information, check gpio_irq_enable().
jhon309 0:c52df770855b 113 */
jhon309 0:c52df770855b 114 void enable_irq();
jhon309 0:c52df770855b 115
jhon309 0:c52df770855b 116 /** Disable IRQ. This method depends on hw implementation, might disable one
jhon309 0:c52df770855b 117 * port interrupts. For further information, check gpio_irq_disable().
jhon309 0:c52df770855b 118 */
jhon309 0:c52df770855b 119 void disable_irq();
jhon309 0:c52df770855b 120
jhon309 0:c52df770855b 121 static void _irq_handler(uint32_t id, gpio_irq_event event);
jhon309 0:c52df770855b 122
jhon309 0:c52df770855b 123 protected:
jhon309 0:c52df770855b 124 gpio_t gpio;
jhon309 0:c52df770855b 125 gpio_irq_t gpio_irq;
jhon309 0:c52df770855b 126
jhon309 0:c52df770855b 127 FunctionPointer _rise;
jhon309 0:c52df770855b 128 FunctionPointer _fall;
jhon309 0:c52df770855b 129 };
jhon309 0:c52df770855b 130
jhon309 0:c52df770855b 131 } // namespace mbed
jhon309 0:c52df770855b 132
jhon309 0:c52df770855b 133 #endif
jhon309 0:c52df770855b 134
jhon309 0:c52df770855b 135 #endif