Vladimir Vana / mbed

pro vyuku PSS v Jecne

InterruptIn.h@0:23d1f73bf130, 2017-09-24 (annotated)

Committer:
vladvana
Date:
Sun Sep 24 12:31:52 2017 +0000
Revision:
0:23d1f73bf130
podklady pro cviceni z PSS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vladvana 0:23d1f73bf130 1 /* mbed Microcontroller Library
vladvana 0:23d1f73bf130 2 * Copyright (c) 2006-2013 ARM Limited
vladvana 0:23d1f73bf130 3 *
vladvana 0:23d1f73bf130 4 * Licensed under the Apache License, Version 2.0 (the "License");
vladvana 0:23d1f73bf130 5 * you may not use this file except in compliance with the License.
vladvana 0:23d1f73bf130 6 * You may obtain a copy of the License at
vladvana 0:23d1f73bf130 7 *
vladvana 0:23d1f73bf130 8 * http://www.apache.org/licenses/LICENSE-2.0
vladvana 0:23d1f73bf130 9 *
vladvana 0:23d1f73bf130 10 * Unless required by applicable law or agreed to in writing, software
vladvana 0:23d1f73bf130 11 * distributed under the License is distributed on an "AS IS" BASIS,
vladvana 0:23d1f73bf130 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vladvana 0:23d1f73bf130 13 * See the License for the specific language governing permissions and
vladvana 0:23d1f73bf130 14 * limitations under the License.
vladvana 0:23d1f73bf130 15 */
vladvana 0:23d1f73bf130 16 #ifndef MBED_INTERRUPTIN_H
vladvana 0:23d1f73bf130 17 #define MBED_INTERRUPTIN_H
vladvana 0:23d1f73bf130 18
vladvana 0:23d1f73bf130 19 #include "platform.h"
vladvana 0:23d1f73bf130 20
vladvana 0:23d1f73bf130 21 #if DEVICE_INTERRUPTIN
vladvana 0:23d1f73bf130 22
vladvana 0:23d1f73bf130 23 #include "gpio_api.h"
vladvana 0:23d1f73bf130 24 #include "gpio_irq_api.h"
vladvana 0:23d1f73bf130 25 #include "FunctionPointer.h"
vladvana 0:23d1f73bf130 26
vladvana 0:23d1f73bf130 27 namespace mbed {
vladvana 0:23d1f73bf130 28
vladvana 0:23d1f73bf130 29 /** A digital interrupt input, used to call a function on a rising or falling edge
vladvana 0:23d1f73bf130 30 *
vladvana 0:23d1f73bf130 31 * Example:
vladvana 0:23d1f73bf130 32 * @code
vladvana 0:23d1f73bf130 33 * // Flash an LED while waiting for events
vladvana 0:23d1f73bf130 34 *
vladvana 0:23d1f73bf130 35 * #include "mbed.h"
vladvana 0:23d1f73bf130 36 *
vladvana 0:23d1f73bf130 37 * InterruptIn event(p16);
vladvana 0:23d1f73bf130 38 * DigitalOut led(LED1);
vladvana 0:23d1f73bf130 39 *
vladvana 0:23d1f73bf130 40 * void trigger() {
vladvana 0:23d1f73bf130 41 * printf("triggered!\n");
vladvana 0:23d1f73bf130 42 * }
vladvana 0:23d1f73bf130 43 *
vladvana 0:23d1f73bf130 44 * int main() {
vladvana 0:23d1f73bf130 45 * event.rise(&trigger);
vladvana 0:23d1f73bf130 46 * while(1) {
vladvana 0:23d1f73bf130 47 * led = !led;
vladvana 0:23d1f73bf130 48 * wait(0.25);
vladvana 0:23d1f73bf130 49 * }
vladvana 0:23d1f73bf130 50 * }
vladvana 0:23d1f73bf130 51 * @endcode
vladvana 0:23d1f73bf130 52 */
vladvana 0:23d1f73bf130 53 class InterruptIn {
vladvana 0:23d1f73bf130 54
vladvana 0:23d1f73bf130 55 public:
vladvana 0:23d1f73bf130 56
vladvana 0:23d1f73bf130 57 /** Create an InterruptIn connected to the specified pin
vladvana 0:23d1f73bf130 58 *
vladvana 0:23d1f73bf130 59 * @param pin InterruptIn pin to connect to
vladvana 0:23d1f73bf130 60 * @param name (optional) A string to identify the object
vladvana 0:23d1f73bf130 61 */
vladvana 0:23d1f73bf130 62 InterruptIn(PinName pin);
vladvana 0:23d1f73bf130 63 virtual ~InterruptIn();
vladvana 0:23d1f73bf130 64
vladvana 0:23d1f73bf130 65 int read();
vladvana 0:23d1f73bf130 66 #ifdef MBED_OPERATORS
vladvana 0:23d1f73bf130 67 operator int();
vladvana 0:23d1f73bf130 68
vladvana 0:23d1f73bf130 69 #endif
vladvana 0:23d1f73bf130 70
vladvana 0:23d1f73bf130 71 /** Attach a function to call when a rising edge occurs on the input
vladvana 0:23d1f73bf130 72 *
vladvana 0:23d1f73bf130 73 * @param fptr A pointer to a void function, or 0 to set as none
vladvana 0:23d1f73bf130 74 */
vladvana 0:23d1f73bf130 75 void rise(void (*fptr)(void));
vladvana 0:23d1f73bf130 76
vladvana 0:23d1f73bf130 77 /** Attach a member function to call when a rising edge occurs on the input
vladvana 0:23d1f73bf130 78 *
vladvana 0:23d1f73bf130 79 * @param tptr pointer to the object to call the member function on
vladvana 0:23d1f73bf130 80 * @param mptr pointer to the member function to be called
vladvana 0:23d1f73bf130 81 */
vladvana 0:23d1f73bf130 82 template<typename T>
vladvana 0:23d1f73bf130 83 void rise(T* tptr, void (T::*mptr)(void)) {
vladvana 0:23d1f73bf130 84 _rise.attach(tptr, mptr);
vladvana 0:23d1f73bf130 85 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
vladvana 0:23d1f73bf130 86 }
vladvana 0:23d1f73bf130 87
vladvana 0:23d1f73bf130 88 /** Attach a function to call when a falling edge occurs on the input
vladvana 0:23d1f73bf130 89 *
vladvana 0:23d1f73bf130 90 * @param fptr A pointer to a void function, or 0 to set as none
vladvana 0:23d1f73bf130 91 */
vladvana 0:23d1f73bf130 92 void fall(void (*fptr)(void));
vladvana 0:23d1f73bf130 93
vladvana 0:23d1f73bf130 94 /** Attach a member function to call when a falling edge occurs on the input
vladvana 0:23d1f73bf130 95 *
vladvana 0:23d1f73bf130 96 * @param tptr pointer to the object to call the member function on
vladvana 0:23d1f73bf130 97 * @param mptr pointer to the member function to be called
vladvana 0:23d1f73bf130 98 */
vladvana 0:23d1f73bf130 99 template<typename T>
vladvana 0:23d1f73bf130 100 void fall(T* tptr, void (T::*mptr)(void)) {
vladvana 0:23d1f73bf130 101 _fall.attach(tptr, mptr);
vladvana 0:23d1f73bf130 102 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
vladvana 0:23d1f73bf130 103 }
vladvana 0:23d1f73bf130 104
vladvana 0:23d1f73bf130 105 /** Set the input pin mode
vladvana 0:23d1f73bf130 106 *
vladvana 0:23d1f73bf130 107 * @param mode PullUp, PullDown, PullNone
vladvana 0:23d1f73bf130 108 */
vladvana 0:23d1f73bf130 109 void mode(PinMode pull);
vladvana 0:23d1f73bf130 110
vladvana 0:23d1f73bf130 111 /** Enable IRQ. This method depends on hw implementation, might enable one
vladvana 0:23d1f73bf130 112 * port interrupts. For further information, check gpio_irq_enable().
vladvana 0:23d1f73bf130 113 */
vladvana 0:23d1f73bf130 114 void enable_irq();
vladvana 0:23d1f73bf130 115
vladvana 0:23d1f73bf130 116 /** Disable IRQ. This method depends on hw implementation, might disable one
vladvana 0:23d1f73bf130 117 * port interrupts. For further information, check gpio_irq_disable().
vladvana 0:23d1f73bf130 118 */
vladvana 0:23d1f73bf130 119 void disable_irq();
vladvana 0:23d1f73bf130 120
vladvana 0:23d1f73bf130 121 static void _irq_handler(uint32_t id, gpio_irq_event event);
vladvana 0:23d1f73bf130 122
vladvana 0:23d1f73bf130 123 protected:
vladvana 0:23d1f73bf130 124 gpio_t gpio;
vladvana 0:23d1f73bf130 125 gpio_irq_t gpio_irq;
vladvana 0:23d1f73bf130 126
vladvana 0:23d1f73bf130 127 FunctionPointer _rise;
vladvana 0:23d1f73bf130 128 FunctionPointer _fall;
vladvana 0:23d1f73bf130 129 };
vladvana 0:23d1f73bf130 130
vladvana 0:23d1f73bf130 131 } // namespace mbed
vladvana 0:23d1f73bf130 132
vladvana 0:23d1f73bf130 133 #endif
vladvana 0:23d1f73bf130 134
vladvana 0:23d1f73bf130 135 #endif