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InterruptManager.h@123:b0220dba8be7, 2016-08-12 (annotated)

Committer:
Kojto
Date:
Fri Aug 12 13:04:35 2016 +0200
Revision:
123:b0220dba8be7
Parent:
122:f9eeca106725 
Release 123 of the mbed library



Changes:

- new targets: nucleo_f207zg, beetle, nrf51_dk, hexiwear,

 nuvoton nuc472, vk rz a1h

- ST - fix timer interrupt handler, sleep api fix

- NXP - lpc15xx us ticker fix

- Nordic - analogin fixes, LF clock init addition, enable i2c async

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 66:9c8f0e3462fb 1 #ifndef MBED_INTERRUPTMANAGER_H
bogdanm 66:9c8f0e3462fb 2 #define MBED_INTERRUPTMANAGER_H
bogdanm 66:9c8f0e3462fb 3
bogdanm 66:9c8f0e3462fb 4 #include "cmsis.h"
bogdanm 66:9c8f0e3462fb 5 #include "CallChain.h"
Kojto 123:b0220dba8be7 6 #include "PlatformMutex.h"
bogdanm 66:9c8f0e3462fb 7 #include <string.h>
bogdanm 66:9c8f0e3462fb 8
bogdanm 66:9c8f0e3462fb 9 namespace mbed {
bogdanm 66:9c8f0e3462fb 10
bogdanm 66:9c8f0e3462fb 11 /** Use this singleton if you need to chain interrupt handlers.
bogdanm 66:9c8f0e3462fb 12 *
Kojto 122:f9eeca106725 13 * @Note Synchronization level: Thread safe
Kojto 122:f9eeca106725 14 *
bogdanm 66:9c8f0e3462fb 15 * Example (for LPC1768):
bogdanm 66:9c8f0e3462fb 16 * @code
bogdanm 66:9c8f0e3462fb 17 * #include "InterruptManager.h"
bogdanm 66:9c8f0e3462fb 18 * #include "mbed.h"
bogdanm 85:024bf7f99721 19 *
bogdanm 66:9c8f0e3462fb 20 * Ticker flipper;
bogdanm 66:9c8f0e3462fb 21 * DigitalOut led1(LED1);
bogdanm 66:9c8f0e3462fb 22 * DigitalOut led2(LED2);
bogdanm 85:024bf7f99721 23 *
bogdanm 66:9c8f0e3462fb 24 * void flip(void) {
bogdanm 66:9c8f0e3462fb 25 * led1 = !led1;
bogdanm 66:9c8f0e3462fb 26 * }
bogdanm 85:024bf7f99721 27 *
bogdanm 66:9c8f0e3462fb 28 * void handler(void) {
bogdanm 66:9c8f0e3462fb 29 * led2 = !led1;
bogdanm 66:9c8f0e3462fb 30 * }
bogdanm 85:024bf7f99721 31 *
bogdanm 66:9c8f0e3462fb 32 * int main() {
bogdanm 66:9c8f0e3462fb 33 * led1 = led2 = 0;
bogdanm 66:9c8f0e3462fb 34 * flipper.attach(&flip, 1.0);
bogdanm 66:9c8f0e3462fb 35 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
bogdanm 66:9c8f0e3462fb 36 * }
bogdanm 66:9c8f0e3462fb 37 * @endcode
bogdanm 66:9c8f0e3462fb 38 */
bogdanm 66:9c8f0e3462fb 39 class InterruptManager {
bogdanm 66:9c8f0e3462fb 40 public:
bogdanm 66:9c8f0e3462fb 41 /** Return the only instance of this class
bogdanm 66:9c8f0e3462fb 42 */
bogdanm 66:9c8f0e3462fb 43 static InterruptManager* get();
bogdanm 66:9c8f0e3462fb 44
bogdanm 66:9c8f0e3462fb 45 /** Destroy the current instance of the interrupt manager
bogdanm 66:9c8f0e3462fb 46 */
bogdanm 66:9c8f0e3462fb 47 static void destroy();
bogdanm 85:024bf7f99721 48
bogdanm 66:9c8f0e3462fb 49 /** Add a handler for an interrupt at the end of the handler list
bogdanm 66:9c8f0e3462fb 50 *
bogdanm 66:9c8f0e3462fb 51 * @param function the handler to add
bogdanm 66:9c8f0e3462fb 52 * @param irq interrupt number
bogdanm 66:9c8f0e3462fb 53 *
bogdanm 66:9c8f0e3462fb 54 * @returns
bogdanm 66:9c8f0e3462fb 55 * The function object created for 'function'
bogdanm 66:9c8f0e3462fb 56 */
bogdanm 66:9c8f0e3462fb 57 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
Kojto 122:f9eeca106725 58 // Underlying call is thread safe
bogdanm 66:9c8f0e3462fb 59 return add_common(function, irq);
bogdanm 66:9c8f0e3462fb 60 }
bogdanm 66:9c8f0e3462fb 61
bogdanm 66:9c8f0e3462fb 62 /** Add a handler for an interrupt at the beginning of the handler list
bogdanm 66:9c8f0e3462fb 63 *
bogdanm 66:9c8f0e3462fb 64 * @param function the handler to add
bogdanm 66:9c8f0e3462fb 65 * @param irq interrupt number
bogdanm 66:9c8f0e3462fb 66 *
bogdanm 66:9c8f0e3462fb 67 * @returns
bogdanm 66:9c8f0e3462fb 68 * The function object created for 'function'
bogdanm 66:9c8f0e3462fb 69 */
bogdanm 66:9c8f0e3462fb 70 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
Kojto 122:f9eeca106725 71 // Underlying call is thread safe
bogdanm 66:9c8f0e3462fb 72 return add_common(function, irq, true);
bogdanm 66:9c8f0e3462fb 73 }
bogdanm 66:9c8f0e3462fb 74
bogdanm 66:9c8f0e3462fb 75 /** Add a handler for an interrupt at the end of the handler list
bogdanm 66:9c8f0e3462fb 76 *
bogdanm 66:9c8f0e3462fb 77 * @param tptr pointer to the object that has the handler function
bogdanm 66:9c8f0e3462fb 78 * @param mptr pointer to the actual handler function
bogdanm 66:9c8f0e3462fb 79 * @param irq interrupt number
bogdanm 66:9c8f0e3462fb 80 *
bogdanm 66:9c8f0e3462fb 81 * @returns
bogdanm 66:9c8f0e3462fb 82 * The function object created for 'tptr' and 'mptr'
bogdanm 66:9c8f0e3462fb 83 */
bogdanm 66:9c8f0e3462fb 84 template<typename T>
bogdanm 66:9c8f0e3462fb 85 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
Kojto 122:f9eeca106725 86 // Underlying call is thread safe
bogdanm 66:9c8f0e3462fb 87 return add_common(tptr, mptr, irq);
bogdanm 66:9c8f0e3462fb 88 }
bogdanm 66:9c8f0e3462fb 89
bogdanm 66:9c8f0e3462fb 90 /** Add a handler for an interrupt at the beginning of the handler list
bogdanm 66:9c8f0e3462fb 91 *
bogdanm 66:9c8f0e3462fb 92 * @param tptr pointer to the object that has the handler function
bogdanm 66:9c8f0e3462fb 93 * @param mptr pointer to the actual handler function
bogdanm 66:9c8f0e3462fb 94 * @param irq interrupt number
bogdanm 66:9c8f0e3462fb 95 *
bogdanm 66:9c8f0e3462fb 96 * @returns
bogdanm 66:9c8f0e3462fb 97 * The function object created for 'tptr' and 'mptr'
bogdanm 66:9c8f0e3462fb 98 */
bogdanm 66:9c8f0e3462fb 99 template<typename T>
bogdanm 66:9c8f0e3462fb 100 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
Kojto 122:f9eeca106725 101 // Underlying call is thread safe
bogdanm 66:9c8f0e3462fb 102 return add_common(tptr, mptr, irq, true);
bogdanm 66:9c8f0e3462fb 103 }
bogdanm 66:9c8f0e3462fb 104
bogdanm 66:9c8f0e3462fb 105 /** Remove a handler from an interrupt
bogdanm 66:9c8f0e3462fb 106 *
bogdanm 66:9c8f0e3462fb 107 * @param handler the function object for the handler to remove
bogdanm 66:9c8f0e3462fb 108 * @param irq the interrupt number
bogdanm 66:9c8f0e3462fb 109 *
bogdanm 66:9c8f0e3462fb 110 * @returns
bogdanm 66:9c8f0e3462fb 111 * true if the handler was found and removed, false otherwise
bogdanm 66:9c8f0e3462fb 112 */
bogdanm 66:9c8f0e3462fb 113 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
bogdanm 66:9c8f0e3462fb 114
bogdanm 66:9c8f0e3462fb 115 private:
bogdanm 66:9c8f0e3462fb 116 InterruptManager();
bogdanm 66:9c8f0e3462fb 117 ~InterruptManager();
bogdanm 66:9c8f0e3462fb 118
Kojto 122:f9eeca106725 119 void lock();
Kojto 122:f9eeca106725 120 void unlock();
Kojto 122:f9eeca106725 121
bogdanm 66:9c8f0e3462fb 122 // We declare the copy contructor and the assignment operator, but we don't
bogdanm 66:9c8f0e3462fb 123 // implement them. This way, if someone tries to copy/assign our instance,
bogdanm 66:9c8f0e3462fb 124 // he will get an error at compile time.
bogdanm 66:9c8f0e3462fb 125 InterruptManager(const InterruptManager&);
bogdanm 66:9c8f0e3462fb 126 InterruptManager& operator =(const InterruptManager&);
bogdanm 66:9c8f0e3462fb 127
bogdanm 66:9c8f0e3462fb 128 template<typename T>
bogdanm 66:9c8f0e3462fb 129 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
Kojto 122:f9eeca106725 130 _mutex.lock();
bogdanm 66:9c8f0e3462fb 131 int irq_pos = get_irq_index(irq);
bogdanm 66:9c8f0e3462fb 132 bool change = must_replace_vector(irq);
bogdanm 66:9c8f0e3462fb 133
bogdanm 66:9c8f0e3462fb 134 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
bogdanm 66:9c8f0e3462fb 135 if (change)
bogdanm 66:9c8f0e3462fb 136 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
Kojto 122:f9eeca106725 137 _mutex.unlock();
bogdanm 66:9c8f0e3462fb 138 return pf;
bogdanm 66:9c8f0e3462fb 139 }
bogdanm 66:9c8f0e3462fb 140
bogdanm 66:9c8f0e3462fb 141 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
bogdanm 66:9c8f0e3462fb 142 bool must_replace_vector(IRQn_Type irq);
bogdanm 66:9c8f0e3462fb 143 int get_irq_index(IRQn_Type irq);
bogdanm 66:9c8f0e3462fb 144 void irq_helper();
bogdanm 66:9c8f0e3462fb 145 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
bogdanm 66:9c8f0e3462fb 146 static void static_irq_helper();
bogdanm 66:9c8f0e3462fb 147
bogdanm 66:9c8f0e3462fb 148 CallChain* _chains[NVIC_NUM_VECTORS];
bogdanm 66:9c8f0e3462fb 149 static InterruptManager* _instance;
Kojto 122:f9eeca106725 150 PlatformMutex _mutex;
bogdanm 66:9c8f0e3462fb 151 };
bogdanm 66:9c8f0e3462fb 152
bogdanm 66:9c8f0e3462fb 153 } // namespace mbed
bogdanm 66:9c8f0e3462fb 154
bogdanm 66:9c8f0e3462fb 155 #endif
bogdanm 66:9c8f0e3462fb 156