Aravind Vadali / mbed-src-AV

mbed.h library with any bug fixes AV finds.

Dependents:   micromouse4_encoder_testing PID_Test Lab1_Test WorkingPID ... more

api/InterruptManager.h@1:ebce2ad32f95, 2015-11-02 (annotated)

Committer:
aravindsv
Date:
Mon Nov 02 03:07:12 2015 +0000
Revision:
1:ebce2ad32f95
Parent:
0:ba7650f404af 
Changed the RCC timeout value to 500 ms, so total code startup time before program starts running is ~1s. Hopefully no side-effects from lower startup timeouts

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aravindsv 0:ba7650f404af 1 #ifndef MBED_INTERRUPTMANAGER_H
aravindsv 0:ba7650f404af 2 #define MBED_INTERRUPTMANAGER_H
aravindsv 0:ba7650f404af 3
aravindsv 0:ba7650f404af 4 #include "cmsis.h"
aravindsv 0:ba7650f404af 5 #include "CallChain.h"
aravindsv 0:ba7650f404af 6 #include <string.h>
aravindsv 0:ba7650f404af 7
aravindsv 0:ba7650f404af 8 namespace mbed {
aravindsv 0:ba7650f404af 9
aravindsv 0:ba7650f404af 10 /** Use this singleton if you need to chain interrupt handlers.
aravindsv 0:ba7650f404af 11 *
aravindsv 0:ba7650f404af 12 * Example (for LPC1768):
aravindsv 0:ba7650f404af 13 * @code
aravindsv 0:ba7650f404af 14 * #include "InterruptManager.h"
aravindsv 0:ba7650f404af 15 * #include "mbed.h"
aravindsv 0:ba7650f404af 16 *
aravindsv 0:ba7650f404af 17 * Ticker flipper;
aravindsv 0:ba7650f404af 18 * DigitalOut led1(LED1);
aravindsv 0:ba7650f404af 19 * DigitalOut led2(LED2);
aravindsv 0:ba7650f404af 20 *
aravindsv 0:ba7650f404af 21 * void flip(void) {
aravindsv 0:ba7650f404af 22 * led1 = !led1;
aravindsv 0:ba7650f404af 23 * }
aravindsv 0:ba7650f404af 24 *
aravindsv 0:ba7650f404af 25 * void handler(void) {
aravindsv 0:ba7650f404af 26 * led2 = !led1;
aravindsv 0:ba7650f404af 27 * }
aravindsv 0:ba7650f404af 28 *
aravindsv 0:ba7650f404af 29 * int main() {
aravindsv 0:ba7650f404af 30 * led1 = led2 = 0;
aravindsv 0:ba7650f404af 31 * flipper.attach(&flip, 1.0);
aravindsv 0:ba7650f404af 32 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
aravindsv 0:ba7650f404af 33 * }
aravindsv 0:ba7650f404af 34 * @endcode
aravindsv 0:ba7650f404af 35 */
aravindsv 0:ba7650f404af 36 class InterruptManager {
aravindsv 0:ba7650f404af 37 public:
aravindsv 0:ba7650f404af 38 /** Return the only instance of this class
aravindsv 0:ba7650f404af 39 */
aravindsv 0:ba7650f404af 40 static InterruptManager* get();
aravindsv 0:ba7650f404af 41
aravindsv 0:ba7650f404af 42 /** Destroy the current instance of the interrupt manager
aravindsv 0:ba7650f404af 43 */
aravindsv 0:ba7650f404af 44 static void destroy();
aravindsv 0:ba7650f404af 45
aravindsv 0:ba7650f404af 46 /** Add a handler for an interrupt at the end of the handler list
aravindsv 0:ba7650f404af 47 *
aravindsv 0:ba7650f404af 48 * @param function the handler to add
aravindsv 0:ba7650f404af 49 * @param irq interrupt number
aravindsv 0:ba7650f404af 50 *
aravindsv 0:ba7650f404af 51 * @returns
aravindsv 0:ba7650f404af 52 * The function object created for 'function'
aravindsv 0:ba7650f404af 53 */
aravindsv 0:ba7650f404af 54 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
aravindsv 0:ba7650f404af 55 return add_common(function, irq);
aravindsv 0:ba7650f404af 56 }
aravindsv 0:ba7650f404af 57
aravindsv 0:ba7650f404af 58 /** Add a handler for an interrupt at the beginning of the handler list
aravindsv 0:ba7650f404af 59 *
aravindsv 0:ba7650f404af 60 * @param function the handler to add
aravindsv 0:ba7650f404af 61 * @param irq interrupt number
aravindsv 0:ba7650f404af 62 *
aravindsv 0:ba7650f404af 63 * @returns
aravindsv 0:ba7650f404af 64 * The function object created for 'function'
aravindsv 0:ba7650f404af 65 */
aravindsv 0:ba7650f404af 66 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
aravindsv 0:ba7650f404af 67 return add_common(function, irq, true);
aravindsv 0:ba7650f404af 68 }
aravindsv 0:ba7650f404af 69
aravindsv 0:ba7650f404af 70 /** Add a handler for an interrupt at the end of the handler list
aravindsv 0:ba7650f404af 71 *
aravindsv 0:ba7650f404af 72 * @param tptr pointer to the object that has the handler function
aravindsv 0:ba7650f404af 73 * @param mptr pointer to the actual handler function
aravindsv 0:ba7650f404af 74 * @param irq interrupt number
aravindsv 0:ba7650f404af 75 *
aravindsv 0:ba7650f404af 76 * @returns
aravindsv 0:ba7650f404af 77 * The function object created for 'tptr' and 'mptr'
aravindsv 0:ba7650f404af 78 */
aravindsv 0:ba7650f404af 79 template<typename T>
aravindsv 0:ba7650f404af 80 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
aravindsv 0:ba7650f404af 81 return add_common(tptr, mptr, irq);
aravindsv 0:ba7650f404af 82 }
aravindsv 0:ba7650f404af 83
aravindsv 0:ba7650f404af 84 /** Add a handler for an interrupt at the beginning of the handler list
aravindsv 0:ba7650f404af 85 *
aravindsv 0:ba7650f404af 86 * @param tptr pointer to the object that has the handler function
aravindsv 0:ba7650f404af 87 * @param mptr pointer to the actual handler function
aravindsv 0:ba7650f404af 88 * @param irq interrupt number
aravindsv 0:ba7650f404af 89 *
aravindsv 0:ba7650f404af 90 * @returns
aravindsv 0:ba7650f404af 91 * The function object created for 'tptr' and 'mptr'
aravindsv 0:ba7650f404af 92 */
aravindsv 0:ba7650f404af 93 template<typename T>
aravindsv 0:ba7650f404af 94 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
aravindsv 0:ba7650f404af 95 return add_common(tptr, mptr, irq, true);
aravindsv 0:ba7650f404af 96 }
aravindsv 0:ba7650f404af 97
aravindsv 0:ba7650f404af 98 /** Remove a handler from an interrupt
aravindsv 0:ba7650f404af 99 *
aravindsv 0:ba7650f404af 100 * @param handler the function object for the handler to remove
aravindsv 0:ba7650f404af 101 * @param irq the interrupt number
aravindsv 0:ba7650f404af 102 *
aravindsv 0:ba7650f404af 103 * @returns
aravindsv 0:ba7650f404af 104 * true if the handler was found and removed, false otherwise
aravindsv 0:ba7650f404af 105 */
aravindsv 0:ba7650f404af 106 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
aravindsv 0:ba7650f404af 107
aravindsv 0:ba7650f404af 108 private:
aravindsv 0:ba7650f404af 109 InterruptManager();
aravindsv 0:ba7650f404af 110 ~InterruptManager();
aravindsv 0:ba7650f404af 111
aravindsv 0:ba7650f404af 112 // We declare the copy contructor and the assignment operator, but we don't
aravindsv 0:ba7650f404af 113 // implement them. This way, if someone tries to copy/assign our instance,
aravindsv 0:ba7650f404af 114 // he will get an error at compile time.
aravindsv 0:ba7650f404af 115 InterruptManager(const InterruptManager&);
aravindsv 0:ba7650f404af 116 InterruptManager& operator =(const InterruptManager&);
aravindsv 0:ba7650f404af 117
aravindsv 0:ba7650f404af 118 template<typename T>
aravindsv 0:ba7650f404af 119 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
aravindsv 0:ba7650f404af 120 int irq_pos = get_irq_index(irq);
aravindsv 0:ba7650f404af 121 bool change = must_replace_vector(irq);
aravindsv 0:ba7650f404af 122
aravindsv 0:ba7650f404af 123 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
aravindsv 0:ba7650f404af 124 if (change)
aravindsv 0:ba7650f404af 125 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
aravindsv 0:ba7650f404af 126 return pf;
aravindsv 0:ba7650f404af 127 }
aravindsv 0:ba7650f404af 128
aravindsv 0:ba7650f404af 129 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
aravindsv 0:ba7650f404af 130 bool must_replace_vector(IRQn_Type irq);
aravindsv 0:ba7650f404af 131 int get_irq_index(IRQn_Type irq);
aravindsv 0:ba7650f404af 132 void irq_helper();
aravindsv 0:ba7650f404af 133 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
aravindsv 0:ba7650f404af 134 static void static_irq_helper();
aravindsv 0:ba7650f404af 135
aravindsv 0:ba7650f404af 136 CallChain* _chains[NVIC_NUM_VECTORS];
aravindsv 0:ba7650f404af 137 static InterruptManager* _instance;
aravindsv 0:ba7650f404af 138 };
aravindsv 0:ba7650f404af 139
aravindsv 0:ba7650f404af 140 } // namespace mbed
aravindsv 0:ba7650f404af 141
aravindsv 0:ba7650f404af 142 #endif
aravindsv 0:ba7650f404af 143