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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?
User | Revision | Line number | New 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 |