Mark Turner / MarksMbed

This is a repository for all my programs or modified programs.

InterruptManager.h@0:72480818e4a9, 2016-09-11 (annotated)

Committer:
mturner5
Date:
Sun Sep 11 23:48:09 2016 +0000
Revision:
0:72480818e4a9
Made delays for the LEDS and button presses

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mturner5 0:72480818e4a9 1 #ifndef MBED_INTERRUPTMANAGER_H
mturner5 0:72480818e4a9 2 #define MBED_INTERRUPTMANAGER_H
mturner5 0:72480818e4a9 3
mturner5 0:72480818e4a9 4 #include "cmsis.h"
mturner5 0:72480818e4a9 5 #include "CallChain.h"
mturner5 0:72480818e4a9 6 #include <string.h>
mturner5 0:72480818e4a9 7
mturner5 0:72480818e4a9 8 namespace mbed {
mturner5 0:72480818e4a9 9
mturner5 0:72480818e4a9 10 /** Use this singleton if you need to chain interrupt handlers.
mturner5 0:72480818e4a9 11 *
mturner5 0:72480818e4a9 12 * Example (for LPC1768):
mturner5 0:72480818e4a9 13 * @code
mturner5 0:72480818e4a9 14 * #include "InterruptManager.h"
mturner5 0:72480818e4a9 15 * #include "mbed.h"
mturner5 0:72480818e4a9 16 *
mturner5 0:72480818e4a9 17 * Ticker flipper;
mturner5 0:72480818e4a9 18 * DigitalOut led1(LED1);
mturner5 0:72480818e4a9 19 * DigitalOut led2(LED2);
mturner5 0:72480818e4a9 20 *
mturner5 0:72480818e4a9 21 * void flip(void) {
mturner5 0:72480818e4a9 22 * led1 = !led1;
mturner5 0:72480818e4a9 23 * }
mturner5 0:72480818e4a9 24 *
mturner5 0:72480818e4a9 25 * void handler(void) {
mturner5 0:72480818e4a9 26 * led2 = !led1;
mturner5 0:72480818e4a9 27 * }
mturner5 0:72480818e4a9 28 *
mturner5 0:72480818e4a9 29 * int main() {
mturner5 0:72480818e4a9 30 * led1 = led2 = 0;
mturner5 0:72480818e4a9 31 * flipper.attach(&flip, 1.0);
mturner5 0:72480818e4a9 32 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
mturner5 0:72480818e4a9 33 * }
mturner5 0:72480818e4a9 34 * @endcode
mturner5 0:72480818e4a9 35 */
mturner5 0:72480818e4a9 36 class InterruptManager {
mturner5 0:72480818e4a9 37 public:
mturner5 0:72480818e4a9 38 /** Return the only instance of this class
mturner5 0:72480818e4a9 39 */
mturner5 0:72480818e4a9 40 static InterruptManager* get();
mturner5 0:72480818e4a9 41
mturner5 0:72480818e4a9 42 /** Destroy the current instance of the interrupt manager
mturner5 0:72480818e4a9 43 */
mturner5 0:72480818e4a9 44 static void destroy();
mturner5 0:72480818e4a9 45
mturner5 0:72480818e4a9 46 /** Add a handler for an interrupt at the end of the handler list
mturner5 0:72480818e4a9 47 *
mturner5 0:72480818e4a9 48 * @param function the handler to add
mturner5 0:72480818e4a9 49 * @param irq interrupt number
mturner5 0:72480818e4a9 50 *
mturner5 0:72480818e4a9 51 * @returns
mturner5 0:72480818e4a9 52 * The function object created for 'function'
mturner5 0:72480818e4a9 53 */
mturner5 0:72480818e4a9 54 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
mturner5 0:72480818e4a9 55 return add_common(function, irq);
mturner5 0:72480818e4a9 56 }
mturner5 0:72480818e4a9 57
mturner5 0:72480818e4a9 58 /** Add a handler for an interrupt at the beginning of the handler list
mturner5 0:72480818e4a9 59 *
mturner5 0:72480818e4a9 60 * @param function the handler to add
mturner5 0:72480818e4a9 61 * @param irq interrupt number
mturner5 0:72480818e4a9 62 *
mturner5 0:72480818e4a9 63 * @returns
mturner5 0:72480818e4a9 64 * The function object created for 'function'
mturner5 0:72480818e4a9 65 */
mturner5 0:72480818e4a9 66 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
mturner5 0:72480818e4a9 67 return add_common(function, irq, true);
mturner5 0:72480818e4a9 68 }
mturner5 0:72480818e4a9 69
mturner5 0:72480818e4a9 70 /** Add a handler for an interrupt at the end of the handler list
mturner5 0:72480818e4a9 71 *
mturner5 0:72480818e4a9 72 * @param tptr pointer to the object that has the handler function
mturner5 0:72480818e4a9 73 * @param mptr pointer to the actual handler function
mturner5 0:72480818e4a9 74 * @param irq interrupt number
mturner5 0:72480818e4a9 75 *
mturner5 0:72480818e4a9 76 * @returns
mturner5 0:72480818e4a9 77 * The function object created for 'tptr' and 'mptr'
mturner5 0:72480818e4a9 78 */
mturner5 0:72480818e4a9 79 template<typename T>
mturner5 0:72480818e4a9 80 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
mturner5 0:72480818e4a9 81 return add_common(tptr, mptr, irq);
mturner5 0:72480818e4a9 82 }
mturner5 0:72480818e4a9 83
mturner5 0:72480818e4a9 84 /** Add a handler for an interrupt at the beginning of the handler list
mturner5 0:72480818e4a9 85 *
mturner5 0:72480818e4a9 86 * @param tptr pointer to the object that has the handler function
mturner5 0:72480818e4a9 87 * @param mptr pointer to the actual handler function
mturner5 0:72480818e4a9 88 * @param irq interrupt number
mturner5 0:72480818e4a9 89 *
mturner5 0:72480818e4a9 90 * @returns
mturner5 0:72480818e4a9 91 * The function object created for 'tptr' and 'mptr'
mturner5 0:72480818e4a9 92 */
mturner5 0:72480818e4a9 93 template<typename T>
mturner5 0:72480818e4a9 94 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
mturner5 0:72480818e4a9 95 return add_common(tptr, mptr, irq, true);
mturner5 0:72480818e4a9 96 }
mturner5 0:72480818e4a9 97
mturner5 0:72480818e4a9 98 /** Remove a handler from an interrupt
mturner5 0:72480818e4a9 99 *
mturner5 0:72480818e4a9 100 * @param handler the function object for the handler to remove
mturner5 0:72480818e4a9 101 * @param irq the interrupt number
mturner5 0:72480818e4a9 102 *
mturner5 0:72480818e4a9 103 * @returns
mturner5 0:72480818e4a9 104 * true if the handler was found and removed, false otherwise
mturner5 0:72480818e4a9 105 */
mturner5 0:72480818e4a9 106 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
mturner5 0:72480818e4a9 107
mturner5 0:72480818e4a9 108 private:
mturner5 0:72480818e4a9 109 InterruptManager();
mturner5 0:72480818e4a9 110 ~InterruptManager();
mturner5 0:72480818e4a9 111
mturner5 0:72480818e4a9 112 // We declare the copy contructor and the assignment operator, but we don't
mturner5 0:72480818e4a9 113 // implement them. This way, if someone tries to copy/assign our instance,
mturner5 0:72480818e4a9 114 // he will get an error at compile time.
mturner5 0:72480818e4a9 115 InterruptManager(const InterruptManager&);
mturner5 0:72480818e4a9 116 InterruptManager& operator =(const InterruptManager&);
mturner5 0:72480818e4a9 117
mturner5 0:72480818e4a9 118 template<typename T>
mturner5 0:72480818e4a9 119 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
mturner5 0:72480818e4a9 120 int irq_pos = get_irq_index(irq);
mturner5 0:72480818e4a9 121 bool change = must_replace_vector(irq);
mturner5 0:72480818e4a9 122
mturner5 0:72480818e4a9 123 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
mturner5 0:72480818e4a9 124 if (change)
mturner5 0:72480818e4a9 125 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
mturner5 0:72480818e4a9 126 return pf;
mturner5 0:72480818e4a9 127 }
mturner5 0:72480818e4a9 128
mturner5 0:72480818e4a9 129 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
mturner5 0:72480818e4a9 130 bool must_replace_vector(IRQn_Type irq);
mturner5 0:72480818e4a9 131 int get_irq_index(IRQn_Type irq);
mturner5 0:72480818e4a9 132 void irq_helper();
mturner5 0:72480818e4a9 133 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
mturner5 0:72480818e4a9 134 static void static_irq_helper();
mturner5 0:72480818e4a9 135
mturner5 0:72480818e4a9 136 CallChain* _chains[NVIC_NUM_VECTORS];
mturner5 0:72480818e4a9 137 static InterruptManager* _instance;
mturner5 0:72480818e4a9 138 };
mturner5 0:72480818e4a9 139
mturner5 0:72480818e4a9 140 } // namespace mbed
mturner5 0:72480818e4a9 141
mturner5 0:72480818e4a9 142 #endif
mturner5 0:72480818e4a9 143