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mbed library sources

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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

api/InterruptIn.h@10:3bc89ef62ce7, 2013-06-14 (annotated)

Committer:
emilmont
Date:
Fri Jun 14 17:49:17 2013 +0100
Revision:
10:3bc89ef62ce7
Parent:
9:0ce32e54c9a7
Child:
13:0645d8841f51
Unify mbed library sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #ifndef MBED_INTERRUPTIN_H
emilmont 10:3bc89ef62ce7 17 #define MBED_INTERRUPTIN_H
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 #include "platform.h"
emilmont 10:3bc89ef62ce7 20
emilmont 10:3bc89ef62ce7 21 #if DEVICE_INTERRUPTIN
emilmont 10:3bc89ef62ce7 22
emilmont 10:3bc89ef62ce7 23 #include "gpio_api.h"
emilmont 10:3bc89ef62ce7 24 #include "gpio_irq_api.h"
emilmont 10:3bc89ef62ce7 25
emilmont 10:3bc89ef62ce7 26 #include "FunctionPointer.h"
emilmont 10:3bc89ef62ce7 27
emilmont 10:3bc89ef62ce7 28 namespace mbed {
emilmont 10:3bc89ef62ce7 29
emilmont 10:3bc89ef62ce7 30 /** A digital interrupt input, used to call a function on a rising or falling edge
emilmont 10:3bc89ef62ce7 31 *
emilmont 10:3bc89ef62ce7 32 * Example:
emilmont 10:3bc89ef62ce7 33 * @code
emilmont 10:3bc89ef62ce7 34 * // Flash an LED while waiting for events
emilmont 10:3bc89ef62ce7 35 *
emilmont 10:3bc89ef62ce7 36 * #include "mbed.h"
emilmont 10:3bc89ef62ce7 37 *
emilmont 10:3bc89ef62ce7 38 * InterruptIn event(p16);
emilmont 10:3bc89ef62ce7 39 * DigitalOut led(LED1);
emilmont 10:3bc89ef62ce7 40 *
emilmont 10:3bc89ef62ce7 41 * void trigger() {
emilmont 10:3bc89ef62ce7 42 * printf("triggered!\n");
emilmont 10:3bc89ef62ce7 43 * }
emilmont 10:3bc89ef62ce7 44 *
emilmont 10:3bc89ef62ce7 45 * int main() {
emilmont 10:3bc89ef62ce7 46 * event.rise(&trigger);
emilmont 10:3bc89ef62ce7 47 * while(1) {
emilmont 10:3bc89ef62ce7 48 * led = !led;
emilmont 10:3bc89ef62ce7 49 * wait(0.25);
emilmont 10:3bc89ef62ce7 50 * }
emilmont 10:3bc89ef62ce7 51 * }
emilmont 10:3bc89ef62ce7 52 * @endcode
emilmont 10:3bc89ef62ce7 53 */
emilmont 10:3bc89ef62ce7 54 class InterruptIn {
emilmont 10:3bc89ef62ce7 55
emilmont 10:3bc89ef62ce7 56 public:
emilmont 10:3bc89ef62ce7 57
emilmont 10:3bc89ef62ce7 58 /** Create an InterruptIn connected to the specified pin
emilmont 10:3bc89ef62ce7 59 *
emilmont 10:3bc89ef62ce7 60 * @param pin InterruptIn pin to connect to
emilmont 10:3bc89ef62ce7 61 * @param name (optional) A string to identify the object
emilmont 10:3bc89ef62ce7 62 */
emilmont 10:3bc89ef62ce7 63 InterruptIn(PinName pin);
emilmont 10:3bc89ef62ce7 64 virtual ~InterruptIn();
emilmont 10:3bc89ef62ce7 65
emilmont 10:3bc89ef62ce7 66 int read();
emilmont 10:3bc89ef62ce7 67 #ifdef MBED_OPERATORS
emilmont 10:3bc89ef62ce7 68 operator int();
emilmont 10:3bc89ef62ce7 69
emilmont 10:3bc89ef62ce7 70 #endif
emilmont 10:3bc89ef62ce7 71
emilmont 10:3bc89ef62ce7 72 /** Attach a function to call when a rising edge occurs on the input
emilmont 10:3bc89ef62ce7 73 *
emilmont 10:3bc89ef62ce7 74 * @param fptr A pointer to a void function, or 0 to set as none
emilmont 10:3bc89ef62ce7 75 */
emilmont 10:3bc89ef62ce7 76 void rise(void (*fptr)(void));
emilmont 10:3bc89ef62ce7 77
emilmont 10:3bc89ef62ce7 78 /** Attach a member function to call when a rising edge occurs on the input
emilmont 10:3bc89ef62ce7 79 *
emilmont 10:3bc89ef62ce7 80 * @param tptr pointer to the object to call the member function on
emilmont 10:3bc89ef62ce7 81 * @param mptr pointer to the member function to be called
emilmont 10:3bc89ef62ce7 82 */
emilmont 10:3bc89ef62ce7 83 template<typename T>
emilmont 10:3bc89ef62ce7 84 void rise(T* tptr, void (T::*mptr)(void)) {
emilmont 10:3bc89ef62ce7 85 _rise.attach(tptr, mptr);
emilmont 10:3bc89ef62ce7 86 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
emilmont 10:3bc89ef62ce7 87 }
emilmont 10:3bc89ef62ce7 88
emilmont 10:3bc89ef62ce7 89 /** Attach a function to call when a falling edge occurs on the input
emilmont 10:3bc89ef62ce7 90 *
emilmont 10:3bc89ef62ce7 91 * @param fptr A pointer to a void function, or 0 to set as none
emilmont 10:3bc89ef62ce7 92 */
emilmont 10:3bc89ef62ce7 93 void fall(void (*fptr)(void));
emilmont 10:3bc89ef62ce7 94
emilmont 10:3bc89ef62ce7 95 /** Attach a member function to call when a falling edge occurs on the input
emilmont 10:3bc89ef62ce7 96 *
emilmont 10:3bc89ef62ce7 97 * @param tptr pointer to the object to call the member function on
emilmont 10:3bc89ef62ce7 98 * @param mptr pointer to the member function to be called
emilmont 10:3bc89ef62ce7 99 */
emilmont 10:3bc89ef62ce7 100 template<typename T>
emilmont 10:3bc89ef62ce7 101 void fall(T* tptr, void (T::*mptr)(void)) {
emilmont 10:3bc89ef62ce7 102 _fall.attach(tptr, mptr);
emilmont 10:3bc89ef62ce7 103 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
emilmont 10:3bc89ef62ce7 104 }
emilmont 10:3bc89ef62ce7 105
emilmont 10:3bc89ef62ce7 106 /** Set the input pin mode
emilmont 10:3bc89ef62ce7 107 *
emilmont 10:3bc89ef62ce7 108 * @param mode PullUp, PullDown, PullNone
emilmont 10:3bc89ef62ce7 109 */
emilmont 10:3bc89ef62ce7 110 void mode(PinMode pull);
emilmont 10:3bc89ef62ce7 111
emilmont 10:3bc89ef62ce7 112 static void _irq_handler(uint32_t id, gpio_irq_event event);
emilmont 10:3bc89ef62ce7 113
emilmont 10:3bc89ef62ce7 114 protected:
emilmont 10:3bc89ef62ce7 115 gpio_t gpio;
emilmont 10:3bc89ef62ce7 116 gpio_irq_t gpio_irq;
emilmont 10:3bc89ef62ce7 117
emilmont 10:3bc89ef62ce7 118 FunctionPointer _rise;
emilmont 10:3bc89ef62ce7 119 FunctionPointer _fall;
emilmont 10:3bc89ef62ce7 120 };
emilmont 10:3bc89ef62ce7 121
emilmont 10:3bc89ef62ce7 122 } // namespace mbed
emilmont 10:3bc89ef62ce7 123
emilmont 10:3bc89ef62ce7 124 #endif
emilmont 10:3bc89ef62ce7 125
emilmont 10:3bc89ef62ce7 126 #endif