Tushar Sachdeva / FRDM_K64F_LCD

A simple 128x32 graphical LCD program to quickstart with LCD on ARM mbed IoT Starter Kit. This requires mbed Applciation Shield with FRDM-K64F platform.

Dependencies:   C12832

mbed/InterruptManager.h@1:eb68c94a8ee5, 2015-04-12 (annotated)

Committer:
tushki7
Date:
Sun Apr 12 15:45:52 2015 +0000
Revision:
1:eb68c94a8ee5
Parent:
0:60d829a0353a 
A simple 128x32 LCD program with ARM mbed IoT Starter Kit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tushki7 0:60d829a0353a 1 #ifndef MBED_INTERRUPTMANAGER_H
tushki7 0:60d829a0353a 2 #define MBED_INTERRUPTMANAGER_H
tushki7 0:60d829a0353a 3
tushki7 0:60d829a0353a 4 #include "cmsis.h"
tushki7 0:60d829a0353a 5 #include "CallChain.h"
tushki7 0:60d829a0353a 6 #include <string.h>
tushki7 0:60d829a0353a 7
tushki7 0:60d829a0353a 8 namespace mbed {
tushki7 0:60d829a0353a 9
tushki7 0:60d829a0353a 10 /** Use this singleton if you need to chain interrupt handlers.
tushki7 0:60d829a0353a 11 *
tushki7 0:60d829a0353a 12 * Example (for LPC1768):
tushki7 0:60d829a0353a 13 * @code
tushki7 0:60d829a0353a 14 * #include "InterruptManager.h"
tushki7 0:60d829a0353a 15 * #include "mbed.h"
tushki7 0:60d829a0353a 16 *
tushki7 0:60d829a0353a 17 * Ticker flipper;
tushki7 0:60d829a0353a 18 * DigitalOut led1(LED1);
tushki7 0:60d829a0353a 19 * DigitalOut led2(LED2);
tushki7 0:60d829a0353a 20 *
tushki7 0:60d829a0353a 21 * void flip(void) {
tushki7 0:60d829a0353a 22 * led1 = !led1;
tushki7 0:60d829a0353a 23 * }
tushki7 0:60d829a0353a 24 *
tushki7 0:60d829a0353a 25 * void handler(void) {
tushki7 0:60d829a0353a 26 * led2 = !led1;
tushki7 0:60d829a0353a 27 * }
tushki7 0:60d829a0353a 28 *
tushki7 0:60d829a0353a 29 * int main() {
tushki7 0:60d829a0353a 30 * led1 = led2 = 0;
tushki7 0:60d829a0353a 31 * flipper.attach(&flip, 1.0);
tushki7 0:60d829a0353a 32 * InterruptManager::get()->add_handler(handler, TIMER3_IRQn);
tushki7 0:60d829a0353a 33 * }
tushki7 0:60d829a0353a 34 * @endcode
tushki7 0:60d829a0353a 35 */
tushki7 0:60d829a0353a 36 class InterruptManager {
tushki7 0:60d829a0353a 37 public:
tushki7 0:60d829a0353a 38 /** Return the only instance of this class
tushki7 0:60d829a0353a 39 */
tushki7 0:60d829a0353a 40 static InterruptManager* get();
tushki7 0:60d829a0353a 41
tushki7 0:60d829a0353a 42 /** Destroy the current instance of the interrupt manager
tushki7 0:60d829a0353a 43 */
tushki7 0:60d829a0353a 44 static void destroy();
tushki7 0:60d829a0353a 45
tushki7 0:60d829a0353a 46 /** Add a handler for an interrupt at the end of the handler list
tushki7 0:60d829a0353a 47 *
tushki7 0:60d829a0353a 48 * @param function the handler to add
tushki7 0:60d829a0353a 49 * @param irq interrupt number
tushki7 0:60d829a0353a 50 *
tushki7 0:60d829a0353a 51 * @returns
tushki7 0:60d829a0353a 52 * The function object created for 'function'
tushki7 0:60d829a0353a 53 */
tushki7 0:60d829a0353a 54 pFunctionPointer_t add_handler(void (*function)(void), IRQn_Type irq) {
tushki7 0:60d829a0353a 55 return add_common(function, irq);
tushki7 0:60d829a0353a 56 }
tushki7 0:60d829a0353a 57
tushki7 0:60d829a0353a 58 /** Add a handler for an interrupt at the beginning of the handler list
tushki7 0:60d829a0353a 59 *
tushki7 0:60d829a0353a 60 * @param function the handler to add
tushki7 0:60d829a0353a 61 * @param irq interrupt number
tushki7 0:60d829a0353a 62 *
tushki7 0:60d829a0353a 63 * @returns
tushki7 0:60d829a0353a 64 * The function object created for 'function'
tushki7 0:60d829a0353a 65 */
tushki7 0:60d829a0353a 66 pFunctionPointer_t add_handler_front(void (*function)(void), IRQn_Type irq) {
tushki7 0:60d829a0353a 67 return add_common(function, irq, true);
tushki7 0:60d829a0353a 68 }
tushki7 0:60d829a0353a 69
tushki7 0:60d829a0353a 70 /** Add a handler for an interrupt at the end of the handler list
tushki7 0:60d829a0353a 71 *
tushki7 0:60d829a0353a 72 * @param tptr pointer to the object that has the handler function
tushki7 0:60d829a0353a 73 * @param mptr pointer to the actual handler function
tushki7 0:60d829a0353a 74 * @param irq interrupt number
tushki7 0:60d829a0353a 75 *
tushki7 0:60d829a0353a 76 * @returns
tushki7 0:60d829a0353a 77 * The function object created for 'tptr' and 'mptr'
tushki7 0:60d829a0353a 78 */
tushki7 0:60d829a0353a 79 template<typename T>
tushki7 0:60d829a0353a 80 pFunctionPointer_t add_handler(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
tushki7 0:60d829a0353a 81 return add_common(tptr, mptr, irq);
tushki7 0:60d829a0353a 82 }
tushki7 0:60d829a0353a 83
tushki7 0:60d829a0353a 84 /** Add a handler for an interrupt at the beginning of the handler list
tushki7 0:60d829a0353a 85 *
tushki7 0:60d829a0353a 86 * @param tptr pointer to the object that has the handler function
tushki7 0:60d829a0353a 87 * @param mptr pointer to the actual handler function
tushki7 0:60d829a0353a 88 * @param irq interrupt number
tushki7 0:60d829a0353a 89 *
tushki7 0:60d829a0353a 90 * @returns
tushki7 0:60d829a0353a 91 * The function object created for 'tptr' and 'mptr'
tushki7 0:60d829a0353a 92 */
tushki7 0:60d829a0353a 93 template<typename T>
tushki7 0:60d829a0353a 94 pFunctionPointer_t add_handler_front(T* tptr, void (T::*mptr)(void), IRQn_Type irq) {
tushki7 0:60d829a0353a 95 return add_common(tptr, mptr, irq, true);
tushki7 0:60d829a0353a 96 }
tushki7 0:60d829a0353a 97
tushki7 0:60d829a0353a 98 /** Remove a handler from an interrupt
tushki7 0:60d829a0353a 99 *
tushki7 0:60d829a0353a 100 * @param handler the function object for the handler to remove
tushki7 0:60d829a0353a 101 * @param irq the interrupt number
tushki7 0:60d829a0353a 102 *
tushki7 0:60d829a0353a 103 * @returns
tushki7 0:60d829a0353a 104 * true if the handler was found and removed, false otherwise
tushki7 0:60d829a0353a 105 */
tushki7 0:60d829a0353a 106 bool remove_handler(pFunctionPointer_t handler, IRQn_Type irq);
tushki7 0:60d829a0353a 107
tushki7 0:60d829a0353a 108 private:
tushki7 0:60d829a0353a 109 InterruptManager();
tushki7 0:60d829a0353a 110 ~InterruptManager();
tushki7 0:60d829a0353a 111
tushki7 0:60d829a0353a 112 // We declare the copy contructor and the assignment operator, but we don't
tushki7 0:60d829a0353a 113 // implement them. This way, if someone tries to copy/assign our instance,
tushki7 0:60d829a0353a 114 // he will get an error at compile time.
tushki7 0:60d829a0353a 115 InterruptManager(const InterruptManager&);
tushki7 0:60d829a0353a 116 InterruptManager& operator =(const InterruptManager&);
tushki7 0:60d829a0353a 117
tushki7 0:60d829a0353a 118 template<typename T>
tushki7 0:60d829a0353a 119 pFunctionPointer_t add_common(T *tptr, void (T::*mptr)(void), IRQn_Type irq, bool front=false) {
tushki7 0:60d829a0353a 120 int irq_pos = get_irq_index(irq);
tushki7 0:60d829a0353a 121 bool change = must_replace_vector(irq);
tushki7 0:60d829a0353a 122
tushki7 0:60d829a0353a 123 pFunctionPointer_t pf = front ? _chains[irq_pos]->add_front(tptr, mptr) : _chains[irq_pos]->add(tptr, mptr);
tushki7 0:60d829a0353a 124 if (change)
tushki7 0:60d829a0353a 125 NVIC_SetVector(irq, (uint32_t)&InterruptManager::static_irq_helper);
tushki7 0:60d829a0353a 126 return pf;
tushki7 0:60d829a0353a 127 }
tushki7 0:60d829a0353a 128
tushki7 0:60d829a0353a 129 pFunctionPointer_t add_common(void (*function)(void), IRQn_Type irq, bool front=false);
tushki7 0:60d829a0353a 130 bool must_replace_vector(IRQn_Type irq);
tushki7 0:60d829a0353a 131 int get_irq_index(IRQn_Type irq);
tushki7 0:60d829a0353a 132 void irq_helper();
tushki7 0:60d829a0353a 133 void add_helper(void (*function)(void), IRQn_Type irq, bool front=false);
tushki7 0:60d829a0353a 134 static void static_irq_helper();
tushki7 0:60d829a0353a 135
tushki7 0:60d829a0353a 136 CallChain* _chains[NVIC_NUM_VECTORS];
tushki7 0:60d829a0353a 137 static InterruptManager* _instance;
tushki7 0:60d829a0353a 138 };
tushki7 0:60d829a0353a 139
tushki7 0:60d829a0353a 140 } // namespace mbed
tushki7 0:60d829a0353a 141
tushki7 0:60d829a0353a 142 #endif
tushki7 0:60d829a0353a 143