George Roussos / BLE_Temperature_Exercise

BLE Temperature Service Mobile and Ubiquitous Computing Module Birkbeck College

Dependencies:   DS1820

mbed/InterruptManager.h@0:dd0fea342ad2, 2015-03-08 (annotated)

Committer:
gkroussos
Date:
Sun Mar 08 19:42:20 2015 +0000
Revision:
0:dd0fea342ad2
BLE Temperature Service ; Mobile and Ubiquitous Computing Module; Birkbeck College

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gkroussos 0:dd0fea342ad2 1 #ifndef MBED_INTERRUPTMANAGER_H
gkroussos 0:dd0fea342ad2 2 #define MBED_INTERRUPTMANAGER_H
gkroussos 0:dd0fea342ad2 3
gkroussos 0:dd0fea342ad2 4 #include "cmsis.h"
gkroussos 0:dd0fea342ad2 5 #include "CallChain.h"
gkroussos 0:dd0fea342ad2 6 #include <string.h>
gkroussos 0:dd0fea342ad2 7
gkroussos 0:dd0fea342ad2 8 namespace mbed {
gkroussos 0:dd0fea342ad2 9
gkroussos 0:dd0fea342ad2 10 /** Use this singleton if you need to chain interrupt handlers.
gkroussos 0:dd0fea342ad2 11 *
gkroussos 0:dd0fea342ad2 12 * Example (for LPC1768):
gkroussos 0:dd0fea342ad2 13 * @code
gkroussos 0:dd0fea342ad2 14 * #include "InterruptManager.h"
gkroussos 0:dd0fea342ad2 15 * #include "mbed.h"
gkroussos 0:dd0fea342ad2 16 *
gkroussos 0:dd0fea342ad2 17 * Ticker flipper;
gkroussos 0:dd0fea342ad2 18 * DigitalOut led1(LED1);
gkroussos 0:dd0fea342ad2 19 * DigitalOut led2(LED2);
gkroussos 0:dd0fea342ad2 20 *
gkroussos 0:dd0fea342ad2 21 * void flip(void) {
gkroussos 0:dd0fea342ad2 22 * led1 = !led1;
gkroussos 0:dd0fea342ad2 23 * }
gkroussos 0:dd0fea342ad2 24 *
gkroussos 0:dd0fea342ad2 25 * void handler(void) {
gkroussos 0:dd0fea342ad2 26 * led2 = !led1;
gkroussos 0:dd0fea342ad2 27 * }
gkroussos 0:dd0fea342ad2 28 *
gkroussos 0:dd0fea342ad2 29 * int main() {
gkroussos 0:dd0fea342ad2 30 * led1 = led2 = 0;
gkroussos 0:dd0fea342ad2 31 * flipper.attach(&flip, 1.0);
gkroussos 0:dd0fea342ad2 32 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
gkroussos 0:dd0fea342ad2 33 * }
gkroussos 0:dd0fea342ad2 34 * @endcode
gkroussos 0:dd0fea342ad2 35 */
gkroussos 0:dd0fea342ad2 36 class InterruptManager {
gkroussos 0:dd0fea342ad2 37 public:
gkroussos 0:dd0fea342ad2 38 /** Return the only instance of this class
gkroussos 0:dd0fea342ad2 39 */
gkroussos 0:dd0fea342ad2 40 static InterruptManager* get();
gkroussos 0:dd0fea342ad2 41
gkroussos 0:dd0fea342ad2 42 /** Destroy the current instance of the interrupt manager
gkroussos 0:dd0fea342ad2 43 */
gkroussos 0:dd0fea342ad2 44 static void destroy();
gkroussos 0:dd0fea342ad2 45
gkroussos 0:dd0fea342ad2 46 /** Add a handler for an interrupt at the end of the handler list
gkroussos 0:dd0fea342ad2 47 *
gkroussos 0:dd0fea342ad2 48 * @param function the handler to add
gkroussos 0:dd0fea342ad2 49 * @param irq interrupt number
gkroussos 0:dd0fea342ad2 50 *
gkroussos 0:dd0fea342ad2 51 * @returns
gkroussos 0:dd0fea342ad2 52 * The function object created for 'function'
gkroussos 0:dd0fea342ad2 53 */
gkroussos 0:dd0fea342ad2 54 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
gkroussos 0:dd0fea342ad2 55 return add_common(function, irq);
gkroussos 0:dd0fea342ad2 56 }
gkroussos 0:dd0fea342ad2 57
gkroussos 0:dd0fea342ad2 58 /** Add a handler for an interrupt at the beginning of the handler list
gkroussos 0:dd0fea342ad2 59 *
gkroussos 0:dd0fea342ad2 60 * @param function the handler to add
gkroussos 0:dd0fea342ad2 61 * @param irq interrupt number
gkroussos 0:dd0fea342ad2 62 *
gkroussos 0:dd0fea342ad2 63 * @returns
gkroussos 0:dd0fea342ad2 64 * The function object created for 'function'
gkroussos 0:dd0fea342ad2 65 */
gkroussos 0:dd0fea342ad2 66 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
gkroussos 0:dd0fea342ad2 67 return add_common(function, irq, true);
gkroussos 0:dd0fea342ad2 68 }
gkroussos 0:dd0fea342ad2 69
gkroussos 0:dd0fea342ad2 70 /** Add a handler for an interrupt at the end of the handler list
gkroussos 0:dd0fea342ad2 71 *
gkroussos 0:dd0fea342ad2 72 * @param tptr pointer to the object that has the handler function
gkroussos 0:dd0fea342ad2 73 * @param mptr pointer to the actual handler function
gkroussos 0:dd0fea342ad2 74 * @param irq interrupt number
gkroussos 0:dd0fea342ad2 75 *
gkroussos 0:dd0fea342ad2 76 * @returns
gkroussos 0:dd0fea342ad2 77 * The function object created for 'tptr' and 'mptr'
gkroussos 0:dd0fea342ad2 78 */
gkroussos 0:dd0fea342ad2 79 template<typename T>
gkroussos 0:dd0fea342ad2 80 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
gkroussos 0:dd0fea342ad2 81 return add_common(tptr, mptr, irq);
gkroussos 0:dd0fea342ad2 82 }
gkroussos 0:dd0fea342ad2 83
gkroussos 0:dd0fea342ad2 84 /** Add a handler for an interrupt at the beginning of the handler list
gkroussos 0:dd0fea342ad2 85 *
gkroussos 0:dd0fea342ad2 86 * @param tptr pointer to the object that has the handler function
gkroussos 0:dd0fea342ad2 87 * @param mptr pointer to the actual handler function
gkroussos 0:dd0fea342ad2 88 * @param irq interrupt number
gkroussos 0:dd0fea342ad2 89 *
gkroussos 0:dd0fea342ad2 90 * @returns
gkroussos 0:dd0fea342ad2 91 * The function object created for 'tptr' and 'mptr'
gkroussos 0:dd0fea342ad2 92 */
gkroussos 0:dd0fea342ad2 93 template<typename T>
gkroussos 0:dd0fea342ad2 94 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
gkroussos 0:dd0fea342ad2 95 return add_common(tptr, mptr, irq, true);
gkroussos 0:dd0fea342ad2 96 }
gkroussos 0:dd0fea342ad2 97
gkroussos 0:dd0fea342ad2 98 /** Remove a handler from an interrupt
gkroussos 0:dd0fea342ad2 99 *
gkroussos 0:dd0fea342ad2 100 * @param handler the function object for the handler to remove
gkroussos 0:dd0fea342ad2 101 * @param irq the interrupt number
gkroussos 0:dd0fea342ad2 102 *
gkroussos 0:dd0fea342ad2 103 * @returns
gkroussos 0:dd0fea342ad2 104 * true if the handler was found and removed, false otherwise
gkroussos 0:dd0fea342ad2 105 */
gkroussos 0:dd0fea342ad2 106 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
gkroussos 0:dd0fea342ad2 107
gkroussos 0:dd0fea342ad2 108 private:
gkroussos 0:dd0fea342ad2 109 InterruptManager();
gkroussos 0:dd0fea342ad2 110 ~InterruptManager();
gkroussos 0:dd0fea342ad2 111
gkroussos 0:dd0fea342ad2 112 // We declare the copy contructor and the assignment operator, but we don't
gkroussos 0:dd0fea342ad2 113 // implement them. This way, if someone tries to copy/assign our instance,
gkroussos 0:dd0fea342ad2 114 // he will get an error at compile time.
gkroussos 0:dd0fea342ad2 115 InterruptManager(const InterruptManager&);
gkroussos 0:dd0fea342ad2 116 InterruptManager& operator =(const InterruptManager&);
gkroussos 0:dd0fea342ad2 117
gkroussos 0:dd0fea342ad2 118 template<typename T>
gkroussos 0:dd0fea342ad2 119 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
gkroussos 0:dd0fea342ad2 120 int irq_pos = get_irq_index(irq);
gkroussos 0:dd0fea342ad2 121 bool change = must_replace_vector(irq);
gkroussos 0:dd0fea342ad2 122
gkroussos 0:dd0fea342ad2 123 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
gkroussos 0:dd0fea342ad2 124 if (change)
gkroussos 0:dd0fea342ad2 125 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
gkroussos 0:dd0fea342ad2 126 return pf;
gkroussos 0:dd0fea342ad2 127 }
gkroussos 0:dd0fea342ad2 128
gkroussos 0:dd0fea342ad2 129 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
gkroussos 0:dd0fea342ad2 130 bool must_replace_vector(IRQn_Type irq);
gkroussos 0:dd0fea342ad2 131 int get_irq_index(IRQn_Type irq);
gkroussos 0:dd0fea342ad2 132 void irq_helper();
gkroussos 0:dd0fea342ad2 133 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
gkroussos 0:dd0fea342ad2 134 static void static_irq_helper();
gkroussos 0:dd0fea342ad2 135
gkroussos 0:dd0fea342ad2 136 CallChain* _chains[NVIC_NUM_VECTORS];
gkroussos 0:dd0fea342ad2 137 static InterruptManager* _instance;
gkroussos 0:dd0fea342ad2 138 };
gkroussos 0:dd0fea342ad2 139
gkroussos 0:dd0fea342ad2 140 } // namespace mbed
gkroussos 0:dd0fea342ad2 141
gkroussos 0:dd0fea342ad2 142 #endif
gkroussos 0:dd0fea342ad2 143