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InterruptIn.h@44:24d45a770a51, 2012-11-21 (annotated)
- Committer:
- emilmont
- Date:
- Wed Nov 21 10:49:56 2012 +0000
- Revision:
- 44:24d45a770a51
- Parent:
- 43:e2ed12d17f06
- Child:
- 54:71b101360fb9
Complete refactoring of the mbed library to move the target dependent code to a thin well defined layer, defining a proper object oriented C API to be implemented by the different silicon vendors.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emilmont | 44:24d45a770a51 | 1 | /* mbed Microcontroller Library |
emilmont | 44:24d45a770a51 | 2 | * Copyright (c) 2006-2012 ARM Limited |
emilmont | 44:24d45a770a51 | 3 | * |
emilmont | 44:24d45a770a51 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
emilmont | 44:24d45a770a51 | 5 | * of this software and associated documentation files (the "Software"), to deal |
emilmont | 44:24d45a770a51 | 6 | * in the Software without restriction, including without limitation the rights |
emilmont | 44:24d45a770a51 | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
emilmont | 44:24d45a770a51 | 8 | * copies of the Software, and to permit persons to whom the Software is |
emilmont | 44:24d45a770a51 | 9 | * furnished to do so, subject to the following conditions: |
emilmont | 44:24d45a770a51 | 10 | * |
emilmont | 44:24d45a770a51 | 11 | * The above copyright notice and this permission notice shall be included in |
emilmont | 44:24d45a770a51 | 12 | * all copies or substantial portions of the Software. |
emilmont | 44:24d45a770a51 | 13 | * |
emilmont | 44:24d45a770a51 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
emilmont | 44:24d45a770a51 | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
emilmont | 44:24d45a770a51 | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
emilmont | 44:24d45a770a51 | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
emilmont | 44:24d45a770a51 | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
emilmont | 44:24d45a770a51 | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
emilmont | 44:24d45a770a51 | 20 | * SOFTWARE. |
emilmont | 44:24d45a770a51 | 21 | */ |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 22 | #ifndef MBED_INTERRUPTIN_H |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 23 | #define MBED_INTERRUPTIN_H |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 24 | |
emilmont | 44:24d45a770a51 | 25 | #include "platform.h" |
emilmont | 27:7110ebee3484 | 26 | |
emilmont | 27:7110ebee3484 | 27 | #if DEVICE_INTERRUPTIN |
emilmont | 27:7110ebee3484 | 28 | |
emilmont | 44:24d45a770a51 | 29 | #include "gpio_api.h" |
emilmont | 44:24d45a770a51 | 30 | #include "gpio_irq_api.h" |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 31 | |
emilmont | 44:24d45a770a51 | 32 | #include "FunctionPointer.h" |
emilmont | 27:7110ebee3484 | 33 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 34 | namespace mbed { |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 35 | |
emilmont | 43:e2ed12d17f06 | 36 | /** A digital interrupt input, used to call a function on a rising or falling edge |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 37 | * |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 38 | * Example: |
emilmont | 43:e2ed12d17f06 | 39 | * @code |
emilmont | 43:e2ed12d17f06 | 40 | * // Flash an LED while waiting for events |
emilmont | 43:e2ed12d17f06 | 41 | * |
emilmont | 43:e2ed12d17f06 | 42 | * #include "mbed.h" |
emilmont | 43:e2ed12d17f06 | 43 | * |
emilmont | 43:e2ed12d17f06 | 44 | * InterruptIn event(p16); |
emilmont | 43:e2ed12d17f06 | 45 | * DigitalOut led(LED1); |
emilmont | 43:e2ed12d17f06 | 46 | * |
emilmont | 43:e2ed12d17f06 | 47 | * void trigger() { |
emilmont | 43:e2ed12d17f06 | 48 | * printf("triggered!\n"); |
emilmont | 43:e2ed12d17f06 | 49 | * } |
emilmont | 43:e2ed12d17f06 | 50 | * |
emilmont | 43:e2ed12d17f06 | 51 | * int main() { |
emilmont | 43:e2ed12d17f06 | 52 | * event.rise(&trigger); |
emilmont | 43:e2ed12d17f06 | 53 | * while(1) { |
emilmont | 43:e2ed12d17f06 | 54 | * led = !led; |
emilmont | 43:e2ed12d17f06 | 55 | * wait(0.25); |
emilmont | 43:e2ed12d17f06 | 56 | * } |
emilmont | 43:e2ed12d17f06 | 57 | * } |
emilmont | 43:e2ed12d17f06 | 58 | * @endcode |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 59 | */ |
emilmont | 44:24d45a770a51 | 60 | class InterruptIn { |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 61 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 62 | public: |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 63 | |
emilmont | 43:e2ed12d17f06 | 64 | /** Create an InterruptIn connected to the specified pin |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 65 | * |
emilmont | 43:e2ed12d17f06 | 66 | * @param pin InterruptIn pin to connect to |
emilmont | 43:e2ed12d17f06 | 67 | * @param name (optional) A string to identify the object |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 68 | */ |
emilmont | 44:24d45a770a51 | 69 | InterruptIn(PinName pin); |
emilmont | 27:7110ebee3484 | 70 | virtual ~InterruptIn(); |
emilmont | 44:24d45a770a51 | 71 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 72 | int read(); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 73 | #ifdef MBED_OPERATORS |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 74 | operator int(); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 75 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 76 | #endif |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 77 | |
emilmont | 43:e2ed12d17f06 | 78 | /** Attach a function to call when a rising edge occurs on the input |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 79 | * |
emilmont | 43:e2ed12d17f06 | 80 | * @param fptr A pointer to a void function, or 0 to set as none |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 81 | */ |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 82 | void rise(void (*fptr)(void)); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 83 | |
emilmont | 43:e2ed12d17f06 | 84 | /** Attach a member function to call when a rising edge occurs on the input |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 85 | * |
emilmont | 43:e2ed12d17f06 | 86 | * @param tptr pointer to the object to call the member function on |
emilmont | 43:e2ed12d17f06 | 87 | * @param mptr pointer to the member function to be called |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 88 | */ |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 89 | template<typename T> |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 90 | void rise(T* tptr, void (T::*mptr)(void)) { |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 91 | _rise.attach(tptr, mptr); |
emilmont | 44:24d45a770a51 | 92 | gpio_irq_set(&gpio_irq, IRQ_RISE, 1); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 93 | } |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 94 | |
emilmont | 43:e2ed12d17f06 | 95 | /** Attach a function to call when a falling edge occurs on the input |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 96 | * |
emilmont | 43:e2ed12d17f06 | 97 | * @param fptr A pointer to a void function, or 0 to set as none |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 98 | */ |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 99 | void fall(void (*fptr)(void)); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 100 | |
emilmont | 43:e2ed12d17f06 | 101 | /** Attach a member function to call when a falling edge occurs on the input |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 102 | * |
emilmont | 43:e2ed12d17f06 | 103 | * @param tptr pointer to the object to call the member function on |
emilmont | 43:e2ed12d17f06 | 104 | * @param mptr pointer to the member function to be called |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 105 | */ |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 106 | template<typename T> |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 107 | void fall(T* tptr, void (T::*mptr)(void)) { |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 108 | _fall.attach(tptr, mptr); |
emilmont | 44:24d45a770a51 | 109 | gpio_irq_set(&gpio_irq, IRQ_FALL, 1); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 110 | } |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 111 | |
emilmont | 43:e2ed12d17f06 | 112 | /** Set the input pin mode |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 113 | * |
emilmont | 43:e2ed12d17f06 | 114 | * @param mode PullUp, PullDown, PullNone |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 115 | */ |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 116 | void mode(PinMode pull); |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 117 | |
emilmont | 44:24d45a770a51 | 118 | static void _irq_handler(uint32_t id, gpio_irq_event event); |
emilmont | 27:7110ebee3484 | 119 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 120 | protected: |
emilmont | 44:24d45a770a51 | 121 | gpio_t gpio; |
emilmont | 44:24d45a770a51 | 122 | gpio_irq_t gpio_irq; |
emilmont | 44:24d45a770a51 | 123 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 124 | FunctionPointer _rise; |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 125 | FunctionPointer _fall; |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 126 | }; |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 127 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 128 | } // namespace mbed |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 129 | |
rolf.meyer@arm.com | 11:1c1ebd0324fa | 130 | #endif |
emilmont | 27:7110ebee3484 | 131 | |
emilmont | 27:7110ebee3484 | 132 | #endif |