kushagra brahmbhatt / IoT_Security

IoT Home Alarm System

Dependents:   IoTBurglar_and_Fire_AlarmSystem

InterruptManager.h@0:2f388b030837, 2016-04-29 (annotated)

Committer:
kbrahmbhatt6
Date:
Fri Apr 29 06:59:59 2016 +0000
Revision:
0:2f388b030837
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kbrahmbhatt6 0:2f388b030837 1 #ifndef MBED_INTERRUPTMANAGER_H
kbrahmbhatt6 0:2f388b030837 2 #define MBED_INTERRUPTMANAGER_H
kbrahmbhatt6 0:2f388b030837 3
kbrahmbhatt6 0:2f388b030837 4 #include "cmsis.h"
kbrahmbhatt6 0:2f388b030837 5 #include "CallChain.h"
kbrahmbhatt6 0:2f388b030837 6 #include <string.h>
kbrahmbhatt6 0:2f388b030837 7
kbrahmbhatt6 0:2f388b030837 8 namespace mbed {
kbrahmbhatt6 0:2f388b030837 9
kbrahmbhatt6 0:2f388b030837 10 /** Use this singleton if you need to chain interrupt handlers.
kbrahmbhatt6 0:2f388b030837 11 *
kbrahmbhatt6 0:2f388b030837 12 * Example (for LPC1768):
kbrahmbhatt6 0:2f388b030837 13 * @code
kbrahmbhatt6 0:2f388b030837 14 * #include "InterruptManager.h"
kbrahmbhatt6 0:2f388b030837 15 * #include "mbed.h"
kbrahmbhatt6 0:2f388b030837 16 *
kbrahmbhatt6 0:2f388b030837 17 * Ticker flipper;
kbrahmbhatt6 0:2f388b030837 18 * DigitalOut led1(LED1);
kbrahmbhatt6 0:2f388b030837 19 * DigitalOut led2(LED2);
kbrahmbhatt6 0:2f388b030837 20 *
kbrahmbhatt6 0:2f388b030837 21 * void flip(void) {
kbrahmbhatt6 0:2f388b030837 22 * led1 = !led1;
kbrahmbhatt6 0:2f388b030837 23 * }
kbrahmbhatt6 0:2f388b030837 24 *
kbrahmbhatt6 0:2f388b030837 25 * void handler(void) {
kbrahmbhatt6 0:2f388b030837 26 * led2 = !led1;
kbrahmbhatt6 0:2f388b030837 27 * }
kbrahmbhatt6 0:2f388b030837 28 *
kbrahmbhatt6 0:2f388b030837 29 * int main() {
kbrahmbhatt6 0:2f388b030837 30 * led1 = led2 = 0;
kbrahmbhatt6 0:2f388b030837 31 * flipper.attach(&flip, 1.0);
kbrahmbhatt6 0:2f388b030837 32 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
kbrahmbhatt6 0:2f388b030837 33 * }
kbrahmbhatt6 0:2f388b030837 34 * @endcode
kbrahmbhatt6 0:2f388b030837 35 */
kbrahmbhatt6 0:2f388b030837 36 class InterruptManager {
kbrahmbhatt6 0:2f388b030837 37 public:
kbrahmbhatt6 0:2f388b030837 38 /** Return the only instance of this class
kbrahmbhatt6 0:2f388b030837 39 */
kbrahmbhatt6 0:2f388b030837 40 static InterruptManager* get();
kbrahmbhatt6 0:2f388b030837 41
kbrahmbhatt6 0:2f388b030837 42 /** Destroy the current instance of the interrupt manager
kbrahmbhatt6 0:2f388b030837 43 */
kbrahmbhatt6 0:2f388b030837 44 static void destroy();
kbrahmbhatt6 0:2f388b030837 45
kbrahmbhatt6 0:2f388b030837 46 /** Add a handler for an interrupt at the end of the handler list
kbrahmbhatt6 0:2f388b030837 47 *
kbrahmbhatt6 0:2f388b030837 48 * @param function the handler to add
kbrahmbhatt6 0:2f388b030837 49 * @param irq interrupt number
kbrahmbhatt6 0:2f388b030837 50 *
kbrahmbhatt6 0:2f388b030837 51 * @returns
kbrahmbhatt6 0:2f388b030837 52 * The function object created for 'function'
kbrahmbhatt6 0:2f388b030837 53 */
kbrahmbhatt6 0:2f388b030837 54 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
kbrahmbhatt6 0:2f388b030837 55 return add_common(function, irq);
kbrahmbhatt6 0:2f388b030837 56 }
kbrahmbhatt6 0:2f388b030837 57
kbrahmbhatt6 0:2f388b030837 58 /** Add a handler for an interrupt at the beginning of the handler list
kbrahmbhatt6 0:2f388b030837 59 *
kbrahmbhatt6 0:2f388b030837 60 * @param function the handler to add
kbrahmbhatt6 0:2f388b030837 61 * @param irq interrupt number
kbrahmbhatt6 0:2f388b030837 62 *
kbrahmbhatt6 0:2f388b030837 63 * @returns
kbrahmbhatt6 0:2f388b030837 64 * The function object created for 'function'
kbrahmbhatt6 0:2f388b030837 65 */
kbrahmbhatt6 0:2f388b030837 66 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
kbrahmbhatt6 0:2f388b030837 67 return add_common(function, irq, true);
kbrahmbhatt6 0:2f388b030837 68 }
kbrahmbhatt6 0:2f388b030837 69
kbrahmbhatt6 0:2f388b030837 70 /** Add a handler for an interrupt at the end of the handler list
kbrahmbhatt6 0:2f388b030837 71 *
kbrahmbhatt6 0:2f388b030837 72 * @param tptr pointer to the object that has the handler function
kbrahmbhatt6 0:2f388b030837 73 * @param mptr pointer to the actual handler function
kbrahmbhatt6 0:2f388b030837 74 * @param irq interrupt number
kbrahmbhatt6 0:2f388b030837 75 *
kbrahmbhatt6 0:2f388b030837 76 * @returns
kbrahmbhatt6 0:2f388b030837 77 * The function object created for 'tptr' and 'mptr'
kbrahmbhatt6 0:2f388b030837 78 */
kbrahmbhatt6 0:2f388b030837 79 template<typename T>
kbrahmbhatt6 0:2f388b030837 80 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
kbrahmbhatt6 0:2f388b030837 81 return add_common(tptr, mptr, irq);
kbrahmbhatt6 0:2f388b030837 82 }
kbrahmbhatt6 0:2f388b030837 83
kbrahmbhatt6 0:2f388b030837 84 /** Add a handler for an interrupt at the beginning of the handler list
kbrahmbhatt6 0:2f388b030837 85 *
kbrahmbhatt6 0:2f388b030837 86 * @param tptr pointer to the object that has the handler function
kbrahmbhatt6 0:2f388b030837 87 * @param mptr pointer to the actual handler function
kbrahmbhatt6 0:2f388b030837 88 * @param irq interrupt number
kbrahmbhatt6 0:2f388b030837 89 *
kbrahmbhatt6 0:2f388b030837 90 * @returns
kbrahmbhatt6 0:2f388b030837 91 * The function object created for 'tptr' and 'mptr'
kbrahmbhatt6 0:2f388b030837 92 */
kbrahmbhatt6 0:2f388b030837 93 template<typename T>
kbrahmbhatt6 0:2f388b030837 94 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
kbrahmbhatt6 0:2f388b030837 95 return add_common(tptr, mptr, irq, true);
kbrahmbhatt6 0:2f388b030837 96 }
kbrahmbhatt6 0:2f388b030837 97
kbrahmbhatt6 0:2f388b030837 98 /** Remove a handler from an interrupt
kbrahmbhatt6 0:2f388b030837 99 *
kbrahmbhatt6 0:2f388b030837 100 * @param handler the function object for the handler to remove
kbrahmbhatt6 0:2f388b030837 101 * @param irq the interrupt number
kbrahmbhatt6 0:2f388b030837 102 *
kbrahmbhatt6 0:2f388b030837 103 * @returns
kbrahmbhatt6 0:2f388b030837 104 * true if the handler was found and removed, false otherwise
kbrahmbhatt6 0:2f388b030837 105 */
kbrahmbhatt6 0:2f388b030837 106 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
kbrahmbhatt6 0:2f388b030837 107
kbrahmbhatt6 0:2f388b030837 108 private:
kbrahmbhatt6 0:2f388b030837 109 InterruptManager();
kbrahmbhatt6 0:2f388b030837 110 ~InterruptManager();
kbrahmbhatt6 0:2f388b030837 111
kbrahmbhatt6 0:2f388b030837 112 // We declare the copy contructor and the assignment operator, but we don't
kbrahmbhatt6 0:2f388b030837 113 // implement them. This way, if someone tries to copy/assign our instance,
kbrahmbhatt6 0:2f388b030837 114 // he will get an error at compile time.
kbrahmbhatt6 0:2f388b030837 115 InterruptManager(const InterruptManager&);
kbrahmbhatt6 0:2f388b030837 116 InterruptManager& operator =(const InterruptManager&);
kbrahmbhatt6 0:2f388b030837 117
kbrahmbhatt6 0:2f388b030837 118 template<typename T>
kbrahmbhatt6 0:2f388b030837 119 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
kbrahmbhatt6 0:2f388b030837 120 int irq_pos = get_irq_index(irq);
kbrahmbhatt6 0:2f388b030837 121 bool change = must_replace_vector(irq);
kbrahmbhatt6 0:2f388b030837 122
kbrahmbhatt6 0:2f388b030837 123 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
kbrahmbhatt6 0:2f388b030837 124 if (change)
kbrahmbhatt6 0:2f388b030837 125 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
kbrahmbhatt6 0:2f388b030837 126 return pf;
kbrahmbhatt6 0:2f388b030837 127 }
kbrahmbhatt6 0:2f388b030837 128
kbrahmbhatt6 0:2f388b030837 129 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
kbrahmbhatt6 0:2f388b030837 130 bool must_replace_vector(IRQn_Type irq);
kbrahmbhatt6 0:2f388b030837 131 int get_irq_index(IRQn_Type irq);
kbrahmbhatt6 0:2f388b030837 132 void irq_helper();
kbrahmbhatt6 0:2f388b030837 133 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
kbrahmbhatt6 0:2f388b030837 134 static void static_irq_helper();
kbrahmbhatt6 0:2f388b030837 135
kbrahmbhatt6 0:2f388b030837 136 CallChain* _chains[NVIC_NUM_VECTORS];
kbrahmbhatt6 0:2f388b030837 137 static InterruptManager* _instance;
kbrahmbhatt6 0:2f388b030837 138 };
kbrahmbhatt6 0:2f388b030837 139
kbrahmbhatt6 0:2f388b030837 140 } // namespace mbed
kbrahmbhatt6 0:2f388b030837 141
kbrahmbhatt6 0:2f388b030837 142 #endif
kbrahmbhatt6 0:2f388b030837 143