Vladimir Vana / mbed

pro vyuku PSS v Jecne

InterruptManager.h@0:23d1f73bf130, 2017-09-24 (annotated)

Committer:
vladvana
Date:
Sun Sep 24 12:31:52 2017 +0000
Revision:
0:23d1f73bf130
podklady pro cviceni z PSS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vladvana 0:23d1f73bf130 1 #ifndef MBED_INTERRUPTMANAGER_H
vladvana 0:23d1f73bf130 2 #define MBED_INTERRUPTMANAGER_H
vladvana 0:23d1f73bf130 3
vladvana 0:23d1f73bf130 4 #include "cmsis.h"
vladvana 0:23d1f73bf130 5 #include "CallChain.h"
vladvana 0:23d1f73bf130 6 #include <string.h>
vladvana 0:23d1f73bf130 7
vladvana 0:23d1f73bf130 8 namespace mbed {
vladvana 0:23d1f73bf130 9
vladvana 0:23d1f73bf130 10 /** Use this singleton if you need to chain interrupt handlers.
vladvana 0:23d1f73bf130 11 *
vladvana 0:23d1f73bf130 12 * Example (for LPC1768):
vladvana 0:23d1f73bf130 13 * @code
vladvana 0:23d1f73bf130 14 * #include "InterruptManager.h"
vladvana 0:23d1f73bf130 15 * #include "mbed.h"
vladvana 0:23d1f73bf130 16 *
vladvana 0:23d1f73bf130 17 * Ticker flipper;
vladvana 0:23d1f73bf130 18 * DigitalOut led1(LED1);
vladvana 0:23d1f73bf130 19 * DigitalOut led2(LED2);
vladvana 0:23d1f73bf130 20 *
vladvana 0:23d1f73bf130 21 * void flip(void) {
vladvana 0:23d1f73bf130 22 * led1 = !led1;
vladvana 0:23d1f73bf130 23 * }
vladvana 0:23d1f73bf130 24 *
vladvana 0:23d1f73bf130 25 * void handler(void) {
vladvana 0:23d1f73bf130 26 * led2 = !led1;
vladvana 0:23d1f73bf130 27 * }
vladvana 0:23d1f73bf130 28 *
vladvana 0:23d1f73bf130 29 * int main() {
vladvana 0:23d1f73bf130 30 * led1 = led2 = 0;
vladvana 0:23d1f73bf130 31 * flipper.attach(&flip, 1.0);
vladvana 0:23d1f73bf130 32 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
vladvana 0:23d1f73bf130 33 * }
vladvana 0:23d1f73bf130 34 * @endcode
vladvana 0:23d1f73bf130 35 */
vladvana 0:23d1f73bf130 36 class InterruptManager {
vladvana 0:23d1f73bf130 37 public:
vladvana 0:23d1f73bf130 38 /** Return the only instance of this class
vladvana 0:23d1f73bf130 39 */
vladvana 0:23d1f73bf130 40 static InterruptManager* get();
vladvana 0:23d1f73bf130 41
vladvana 0:23d1f73bf130 42 /** Destroy the current instance of the interrupt manager
vladvana 0:23d1f73bf130 43 */
vladvana 0:23d1f73bf130 44 static void destroy();
vladvana 0:23d1f73bf130 45
vladvana 0:23d1f73bf130 46 /** Add a handler for an interrupt at the end of the handler list
vladvana 0:23d1f73bf130 47 *
vladvana 0:23d1f73bf130 48 * @param function the handler to add
vladvana 0:23d1f73bf130 49 * @param irq interrupt number
vladvana 0:23d1f73bf130 50 *
vladvana 0:23d1f73bf130 51 * @returns
vladvana 0:23d1f73bf130 52 * The function object created for 'function'
vladvana 0:23d1f73bf130 53 */
vladvana 0:23d1f73bf130 54 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
vladvana 0:23d1f73bf130 55 return add_common(function, irq);
vladvana 0:23d1f73bf130 56 }
vladvana 0:23d1f73bf130 57
vladvana 0:23d1f73bf130 58 /** Add a handler for an interrupt at the beginning of the handler list
vladvana 0:23d1f73bf130 59 *
vladvana 0:23d1f73bf130 60 * @param function the handler to add
vladvana 0:23d1f73bf130 61 * @param irq interrupt number
vladvana 0:23d1f73bf130 62 *
vladvana 0:23d1f73bf130 63 * @returns
vladvana 0:23d1f73bf130 64 * The function object created for 'function'
vladvana 0:23d1f73bf130 65 */
vladvana 0:23d1f73bf130 66 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
vladvana 0:23d1f73bf130 67 return add_common(function, irq, true);
vladvana 0:23d1f73bf130 68 }
vladvana 0:23d1f73bf130 69
vladvana 0:23d1f73bf130 70 /** Add a handler for an interrupt at the end of the handler list
vladvana 0:23d1f73bf130 71 *
vladvana 0:23d1f73bf130 72 * @param tptr pointer to the object that has the handler function
vladvana 0:23d1f73bf130 73 * @param mptr pointer to the actual handler function
vladvana 0:23d1f73bf130 74 * @param irq interrupt number
vladvana 0:23d1f73bf130 75 *
vladvana 0:23d1f73bf130 76 * @returns
vladvana 0:23d1f73bf130 77 * The function object created for 'tptr' and 'mptr'
vladvana 0:23d1f73bf130 78 */
vladvana 0:23d1f73bf130 79 template<typename T>
vladvana 0:23d1f73bf130 80 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
vladvana 0:23d1f73bf130 81 return add_common(tptr, mptr, irq);
vladvana 0:23d1f73bf130 82 }
vladvana 0:23d1f73bf130 83
vladvana 0:23d1f73bf130 84 /** Add a handler for an interrupt at the beginning of the handler list
vladvana 0:23d1f73bf130 85 *
vladvana 0:23d1f73bf130 86 * @param tptr pointer to the object that has the handler function
vladvana 0:23d1f73bf130 87 * @param mptr pointer to the actual handler function
vladvana 0:23d1f73bf130 88 * @param irq interrupt number
vladvana 0:23d1f73bf130 89 *
vladvana 0:23d1f73bf130 90 * @returns
vladvana 0:23d1f73bf130 91 * The function object created for 'tptr' and 'mptr'
vladvana 0:23d1f73bf130 92 */
vladvana 0:23d1f73bf130 93 template<typename T>
vladvana 0:23d1f73bf130 94 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
vladvana 0:23d1f73bf130 95 return add_common(tptr, mptr, irq, true);
vladvana 0:23d1f73bf130 96 }
vladvana 0:23d1f73bf130 97
vladvana 0:23d1f73bf130 98 /** Remove a handler from an interrupt
vladvana 0:23d1f73bf130 99 *
vladvana 0:23d1f73bf130 100 * @param handler the function object for the handler to remove
vladvana 0:23d1f73bf130 101 * @param irq the interrupt number
vladvana 0:23d1f73bf130 102 *
vladvana 0:23d1f73bf130 103 * @returns
vladvana 0:23d1f73bf130 104 * true if the handler was found and removed, false otherwise
vladvana 0:23d1f73bf130 105 */
vladvana 0:23d1f73bf130 106 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
vladvana 0:23d1f73bf130 107
vladvana 0:23d1f73bf130 108 private:
vladvana 0:23d1f73bf130 109 InterruptManager();
vladvana 0:23d1f73bf130 110 ~InterruptManager();
vladvana 0:23d1f73bf130 111
vladvana 0:23d1f73bf130 112 // We declare the copy contructor and the assignment operator, but we don't
vladvana 0:23d1f73bf130 113 // implement them. This way, if someone tries to copy/assign our instance,
vladvana 0:23d1f73bf130 114 // he will get an error at compile time.
vladvana 0:23d1f73bf130 115 InterruptManager(const InterruptManager&);
vladvana 0:23d1f73bf130 116 InterruptManager& operator =(const InterruptManager&);
vladvana 0:23d1f73bf130 117
vladvana 0:23d1f73bf130 118 template<typename T>
vladvana 0:23d1f73bf130 119 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
vladvana 0:23d1f73bf130 120 int irq_pos = get_irq_index(irq);
vladvana 0:23d1f73bf130 121 bool change = must_replace_vector(irq);
vladvana 0:23d1f73bf130 122
vladvana 0:23d1f73bf130 123 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
vladvana 0:23d1f73bf130 124 if (change)
vladvana 0:23d1f73bf130 125 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
vladvana 0:23d1f73bf130 126 return pf;
vladvana 0:23d1f73bf130 127 }
vladvana 0:23d1f73bf130 128
vladvana 0:23d1f73bf130 129 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
vladvana 0:23d1f73bf130 130 bool must_replace_vector(IRQn_Type irq);
vladvana 0:23d1f73bf130 131 int get_irq_index(IRQn_Type irq);
vladvana 0:23d1f73bf130 132 void irq_helper();
vladvana 0:23d1f73bf130 133 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
vladvana 0:23d1f73bf130 134 static void static_irq_helper();
vladvana 0:23d1f73bf130 135
vladvana 0:23d1f73bf130 136 CallChain* _chains[NVIC_NUM_VECTORS];
vladvana 0:23d1f73bf130 137 static InterruptManager* _instance;
vladvana 0:23d1f73bf130 138 };
vladvana 0:23d1f73bf130 139
vladvana 0:23d1f73bf130 140 } // namespace mbed
vladvana 0:23d1f73bf130 141
vladvana 0:23d1f73bf130 142 #endif
vladvana 0:23d1f73bf130 143