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InterruptIn.h@64:75c1708b266b, 2013-07-05 (annotated)

Committer:
ldyz
Date:
Fri Jul 05 13:16:13 2013 +0000
Revision:
64:75c1708b266b
Parent:
59:0883845fe643 
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 44:24d45a770a51 1 /* mbed Microcontroller Library
emilmont 54:71b101360fb9 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 44:24d45a770a51 3 *
emilmont 59:0883845fe643 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 59:0883845fe643 5 * you may not use this file except in compliance with the License.
emilmont 59:0883845fe643 6 * You may obtain a copy of the License at
emilmont 59:0883845fe643 7 *
emilmont 59:0883845fe643 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 44:24d45a770a51 9 *
emilmont 59:0883845fe643 10 * Unless required by applicable law or agreed to in writing, software
emilmont 59:0883845fe643 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 59:0883845fe643 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 59:0883845fe643 13 * See the License for the specific language governing permissions and
emilmont 59:0883845fe643 14 * limitations under the License.
emilmont 44:24d45a770a51 15 */
rolf.meyer@arm.com 11:1c1ebd0324fa 16 #ifndef MBED_INTERRUPTIN_H
rolf.meyer@arm.com 11:1c1ebd0324fa 17 #define MBED_INTERRUPTIN_H
rolf.meyer@arm.com 11:1c1ebd0324fa 18
emilmont 44:24d45a770a51 19 #include "platform.h"
emilmont 27:7110ebee3484 20
emilmont 27:7110ebee3484 21 #if DEVICE_INTERRUPTIN
emilmont 27:7110ebee3484 22
emilmont 44:24d45a770a51 23 #include "gpio_api.h"
emilmont 44:24d45a770a51 24 #include "gpio_irq_api.h"
rolf.meyer@arm.com 11:1c1ebd0324fa 25
emilmont 44:24d45a770a51 26 #include "FunctionPointer.h"
emilmont 27:7110ebee3484 27
rolf.meyer@arm.com 11:1c1ebd0324fa 28 namespace mbed {
rolf.meyer@arm.com 11:1c1ebd0324fa 29
emilmont 43:e2ed12d17f06 30 /** A digital interrupt input, used to call a function on a rising or falling edge
rolf.meyer@arm.com 11:1c1ebd0324fa 31 *
rolf.meyer@arm.com 11:1c1ebd0324fa 32 * Example:
emilmont 43:e2ed12d17f06 33 * @code
emilmont 43:e2ed12d17f06 34 * // Flash an LED while waiting for events
emilmont 43:e2ed12d17f06 35 *
emilmont 43:e2ed12d17f06 36 * #include "mbed.h"
emilmont 43:e2ed12d17f06 37 *
emilmont 43:e2ed12d17f06 38 * InterruptIn event(p16);
emilmont 43:e2ed12d17f06 39 * DigitalOut led(LED1);
emilmont 43:e2ed12d17f06 40 *
emilmont 43:e2ed12d17f06 41 * void trigger() {
emilmont 43:e2ed12d17f06 42 * printf("triggered!\n");
emilmont 43:e2ed12d17f06 43 * }
emilmont 43:e2ed12d17f06 44 *
emilmont 43:e2ed12d17f06 45 * int main() {
emilmont 43:e2ed12d17f06 46 * event.rise(&trigger);
emilmont 43:e2ed12d17f06 47 * while(1) {
emilmont 43:e2ed12d17f06 48 * led = !led;
emilmont 43:e2ed12d17f06 49 * wait(0.25);
emilmont 43:e2ed12d17f06 50 * }
emilmont 43:e2ed12d17f06 51 * }
emilmont 43:e2ed12d17f06 52 * @endcode
rolf.meyer@arm.com 11:1c1ebd0324fa 53 */
emilmont 44:24d45a770a51 54 class InterruptIn {
rolf.meyer@arm.com 11:1c1ebd0324fa 55
rolf.meyer@arm.com 11:1c1ebd0324fa 56 public:
rolf.meyer@arm.com 11:1c1ebd0324fa 57
emilmont 43:e2ed12d17f06 58 /** Create an InterruptIn connected to the specified pin
rolf.meyer@arm.com 11:1c1ebd0324fa 59 *
emilmont 43:e2ed12d17f06 60 * @param pin InterruptIn pin to connect to
emilmont 43:e2ed12d17f06 61 * @param name (optional) A string to identify the object
rolf.meyer@arm.com 11:1c1ebd0324fa 62 */
emilmont 44:24d45a770a51 63 InterruptIn(PinName pin);
emilmont 27:7110ebee3484 64 virtual ~InterruptIn();
emilmont 55:d722ed6a4237 65
rolf.meyer@arm.com 11:1c1ebd0324fa 66 int read();
rolf.meyer@arm.com 11:1c1ebd0324fa 67 #ifdef MBED_OPERATORS
rolf.meyer@arm.com 11:1c1ebd0324fa 68 operator int();
rolf.meyer@arm.com 11:1c1ebd0324fa 69
rolf.meyer@arm.com 11:1c1ebd0324fa 70 #endif
emilmont 55:d722ed6a4237 71
emilmont 43:e2ed12d17f06 72 /** Attach a function to call when a rising edge occurs on the input
rolf.meyer@arm.com 11:1c1ebd0324fa 73 *
emilmont 43:e2ed12d17f06 74 * @param fptr A pointer to a void function, or 0 to set as none
rolf.meyer@arm.com 11:1c1ebd0324fa 75 */
rolf.meyer@arm.com 11:1c1ebd0324fa 76 void rise(void (*fptr)(void));
rolf.meyer@arm.com 11:1c1ebd0324fa 77
emilmont 43:e2ed12d17f06 78 /** Attach a member function to call when a rising edge occurs on the input
emilmont 55:d722ed6a4237 79 *
emilmont 43:e2ed12d17f06 80 * @param tptr pointer to the object to call the member function on
emilmont 43:e2ed12d17f06 81 * @param mptr pointer to the member function to be called
rolf.meyer@arm.com 11:1c1ebd0324fa 82 */
rolf.meyer@arm.com 11:1c1ebd0324fa 83 template<typename T>
rolf.meyer@arm.com 11:1c1ebd0324fa 84 void rise(T* tptr, void (T::*mptr)(void)) {
rolf.meyer@arm.com 11:1c1ebd0324fa 85 _rise.attach(tptr, mptr);
emilmont 44:24d45a770a51 86 gpio_irq_set(&gpio_irq, IRQ_RISE, 1);
rolf.meyer@arm.com 11:1c1ebd0324fa 87 }
rolf.meyer@arm.com 11:1c1ebd0324fa 88
emilmont 43:e2ed12d17f06 89 /** Attach a function to call when a falling edge occurs on the input
rolf.meyer@arm.com 11:1c1ebd0324fa 90 *
emilmont 43:e2ed12d17f06 91 * @param fptr A pointer to a void function, or 0 to set as none
rolf.meyer@arm.com 11:1c1ebd0324fa 92 */
rolf.meyer@arm.com 11:1c1ebd0324fa 93 void fall(void (*fptr)(void));
rolf.meyer@arm.com 11:1c1ebd0324fa 94
emilmont 43:e2ed12d17f06 95 /** Attach a member function to call when a falling edge occurs on the input
emilmont 55:d722ed6a4237 96 *
emilmont 43:e2ed12d17f06 97 * @param tptr pointer to the object to call the member function on
emilmont 43:e2ed12d17f06 98 * @param mptr pointer to the member function to be called
rolf.meyer@arm.com 11:1c1ebd0324fa 99 */
rolf.meyer@arm.com 11:1c1ebd0324fa 100 template<typename T>
rolf.meyer@arm.com 11:1c1ebd0324fa 101 void fall(T* tptr, void (T::*mptr)(void)) {
rolf.meyer@arm.com 11:1c1ebd0324fa 102 _fall.attach(tptr, mptr);
emilmont 44:24d45a770a51 103 gpio_irq_set(&gpio_irq, IRQ_FALL, 1);
rolf.meyer@arm.com 11:1c1ebd0324fa 104 }
rolf.meyer@arm.com 11:1c1ebd0324fa 105
emilmont 43:e2ed12d17f06 106 /** Set the input pin mode
rolf.meyer@arm.com 11:1c1ebd0324fa 107 *
emilmont 43:e2ed12d17f06 108 * @param mode PullUp, PullDown, PullNone
rolf.meyer@arm.com 11:1c1ebd0324fa 109 */
rolf.meyer@arm.com 11:1c1ebd0324fa 110 void mode(PinMode pull);
emilmont 55:d722ed6a4237 111
emilmont 44:24d45a770a51 112 static void _irq_handler(uint32_t id, gpio_irq_event event);
emilmont 55:d722ed6a4237 113
rolf.meyer@arm.com 11:1c1ebd0324fa 114 protected:
emilmont 44:24d45a770a51 115 gpio_t gpio;
emilmont 44:24d45a770a51 116 gpio_irq_t gpio_irq;
emilmont 55:d722ed6a4237 117
rolf.meyer@arm.com 11:1c1ebd0324fa 118 FunctionPointer _rise;
rolf.meyer@arm.com 11:1c1ebd0324fa 119 FunctionPointer _fall;
rolf.meyer@arm.com 11:1c1ebd0324fa 120 };
rolf.meyer@arm.com 11:1c1ebd0324fa 121
rolf.meyer@arm.com 11:1c1ebd0324fa 122 } // namespace mbed
rolf.meyer@arm.com 11:1c1ebd0324fa 123
rolf.meyer@arm.com 11:1c1ebd0324fa 124 #endif
emilmont 27:7110ebee3484 125
emilmont 27:7110ebee3484 126 #endif