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Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_Atmel/common/utils/interrupt/interrupt_sam_nvic.h@592:a274ee790e56, 2015-07-17 (annotated)

Committer:
mbed_official
Date:
Fri Jul 17 09:15:10 2015 +0100
Revision:
592:a274ee790e56
Parent:
579:53297373a894 
Synchronized with git revision e7144f83a8d75df80c4877936b6ffe552b0be9e6



Full URL: https://github.com/mbedmicro/mbed/commit/e7144f83a8d75df80c4877936b6ffe552b0be9e6/



More API implementation for SAMR21

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 579:53297373a894 1 #ifndef UTILS_INTERRUPT_INTERRUPT_H
mbed_official 579:53297373a894 2 #define UTILS_INTERRUPT_INTERRUPT_H
mbed_official 579:53297373a894 3
mbed_official 579:53297373a894 4 #include <compiler.h>
mbed_official 579:53297373a894 5 #include <parts.h>
mbed_official 579:53297373a894 6
mbed_official 579:53297373a894 7 #ifdef __cplusplus
mbed_official 579:53297373a894 8 extern "C" {
mbed_official 579:53297373a894 9 #endif
mbed_official 579:53297373a894 10
mbed_official 579:53297373a894 11 /**
mbed_official 579:53297373a894 12 * \weakgroup interrupt_group
mbed_official 579:53297373a894 13 *
mbed_official 579:53297373a894 14 * @{
mbed_official 579:53297373a894 15 */
mbed_official 579:53297373a894 16
mbed_official 579:53297373a894 17 /**
mbed_official 579:53297373a894 18 * \name Interrupt Service Routine definition
mbed_official 579:53297373a894 19 *
mbed_official 579:53297373a894 20 * @{
mbed_official 579:53297373a894 21 */
mbed_official 579:53297373a894 22
mbed_official 579:53297373a894 23 /**
mbed_official 579:53297373a894 24 * \brief Define service routine
mbed_official 579:53297373a894 25 *
mbed_official 579:53297373a894 26 * \note For NVIC devices the interrupt service routines are predefined to
mbed_official 579:53297373a894 27 * add to vector table in binary generation, so there is no service
mbed_official 579:53297373a894 28 * register at run time. The routine collections are in exceptions.h.
mbed_official 579:53297373a894 29 *
mbed_official 579:53297373a894 30 * Usage:
mbed_official 579:53297373a894 31 * \code
mbed_official 579:53297373a894 32 ISR(foo_irq_handler)
mbed_official 579:53297373a894 33 {
mbed_official 579:53297373a894 34 // Function definition
mbed_official 579:53297373a894 35 ...
mbed_official 579:53297373a894 36 }
mbed_official 579:53297373a894 37 \endcode
mbed_official 579:53297373a894 38 *
mbed_official 579:53297373a894 39 * \param func Name for the function.
mbed_official 579:53297373a894 40 */
mbed_official 579:53297373a894 41 # define ISR(func) \
mbed_official 579:53297373a894 42 void func (void)
mbed_official 579:53297373a894 43
mbed_official 579:53297373a894 44 /**
mbed_official 579:53297373a894 45 * \brief Initialize interrupt vectors
mbed_official 579:53297373a894 46 *
mbed_official 579:53297373a894 47 * For NVIC the interrupt vectors are put in vector table. So nothing
mbed_official 579:53297373a894 48 * to do to initialize them, except defined the vector function with
mbed_official 579:53297373a894 49 * right name.
mbed_official 579:53297373a894 50 *
mbed_official 579:53297373a894 51 * This must be called prior to \ref irq_register_handler.
mbed_official 579:53297373a894 52 */
mbed_official 579:53297373a894 53 # define irq_initialize_vectors() \
mbed_official 579:53297373a894 54 do { \
mbed_official 579:53297373a894 55 } while(0)
mbed_official 579:53297373a894 56
mbed_official 579:53297373a894 57 /**
mbed_official 579:53297373a894 58 * \brief Register handler for interrupt
mbed_official 579:53297373a894 59 *
mbed_official 579:53297373a894 60 * For NVIC the interrupt vectors are put in vector table. So nothing
mbed_official 579:53297373a894 61 * to do to register them, except defined the vector function with
mbed_official 579:53297373a894 62 * right name.
mbed_official 579:53297373a894 63 *
mbed_official 579:53297373a894 64 * Usage:
mbed_official 579:53297373a894 65 * \code
mbed_official 579:53297373a894 66 irq_initialize_vectors();
mbed_official 579:53297373a894 67 irq_register_handler(foo_irq_handler);
mbed_official 579:53297373a894 68 \endcode
mbed_official 579:53297373a894 69 *
mbed_official 579:53297373a894 70 * \note The function \a func must be defined with the \ref ISR macro.
mbed_official 579:53297373a894 71 * \note The functions prototypes can be found in the device exception header
mbed_official 579:53297373a894 72 * files (exceptions.h).
mbed_official 579:53297373a894 73 */
mbed_official 579:53297373a894 74 # define irq_register_handler(int_num, int_prio) \
mbed_official 579:53297373a894 75 NVIC_ClearPendingIRQ( (IRQn_Type)int_num); \
mbed_official 579:53297373a894 76 NVIC_SetPriority( (IRQn_Type)int_num, int_prio); \
mbed_official 579:53297373a894 77 NVIC_EnableIRQ( (IRQn_Type)int_num); \
mbed_official 579:53297373a894 78
mbed_official 579:53297373a894 79 //@}
mbed_official 579:53297373a894 80
mbed_official 579:53297373a894 81 # define cpu_irq_enable() \
mbed_official 579:53297373a894 82 do { \
mbed_official 579:53297373a894 83 g_interrupt_enabled = true; \
mbed_official 579:53297373a894 84 __DMB(); \
mbed_official 579:53297373a894 85 __enable_irq(); \
mbed_official 579:53297373a894 86 } while (0)
mbed_official 579:53297373a894 87 # define cpu_irq_disable() \
mbed_official 579:53297373a894 88 do { \
mbed_official 579:53297373a894 89 __disable_irq(); \
mbed_official 579:53297373a894 90 __DMB(); \
mbed_official 579:53297373a894 91 g_interrupt_enabled = false; \
mbed_official 579:53297373a894 92 } while (0)
mbed_official 579:53297373a894 93
mbed_official 579:53297373a894 94 typedef uint32_t irqflags_t;
mbed_official 579:53297373a894 95
mbed_official 579:53297373a894 96 #if !defined(__DOXYGEN__)
mbed_official 579:53297373a894 97 extern volatile bool g_interrupt_enabled;
mbed_official 579:53297373a894 98 #endif
mbed_official 579:53297373a894 99
mbed_official 579:53297373a894 100 #define cpu_irq_is_enabled() (__get_PRIMASK() == 0)
mbed_official 579:53297373a894 101
mbed_official 579:53297373a894 102 static volatile uint32_t cpu_irq_critical_section_counter;
mbed_official 579:53297373a894 103 static volatile bool cpu_irq_prev_interrupt_state;
mbed_official 579:53297373a894 104
mbed_official 579:53297373a894 105 static inline irqflags_t cpu_irq_save(void)
mbed_official 579:53297373a894 106 {
mbed_official 579:53297373a894 107 irqflags_t flags = cpu_irq_is_enabled();
mbed_official 579:53297373a894 108 cpu_irq_disable();
mbed_official 579:53297373a894 109 return flags;
mbed_official 579:53297373a894 110 }
mbed_official 579:53297373a894 111
mbed_official 579:53297373a894 112 static inline bool cpu_irq_is_enabled_flags(irqflags_t flags)
mbed_official 579:53297373a894 113 {
mbed_official 579:53297373a894 114 return (flags);
mbed_official 579:53297373a894 115 }
mbed_official 579:53297373a894 116
mbed_official 579:53297373a894 117 static inline void cpu_irq_restore(irqflags_t flags)
mbed_official 579:53297373a894 118 {
mbed_official 579:53297373a894 119 if (cpu_irq_is_enabled_flags(flags))
mbed_official 579:53297373a894 120 cpu_irq_enable();
mbed_official 579:53297373a894 121 }
mbed_official 579:53297373a894 122
mbed_official 579:53297373a894 123 void cpu_irq_enter_critical(void);
mbed_official 579:53297373a894 124 void cpu_irq_leave_critical(void);
mbed_official 579:53297373a894 125
mbed_official 579:53297373a894 126 /**
mbed_official 579:53297373a894 127 * \weakgroup interrupt_deprecated_group
mbed_official 579:53297373a894 128 * @{
mbed_official 579:53297373a894 129 */
mbed_official 579:53297373a894 130
mbed_official 579:53297373a894 131 #define Enable_global_interrupt() cpu_irq_enable()
mbed_official 579:53297373a894 132 #define Disable_global_interrupt() cpu_irq_disable()
mbed_official 579:53297373a894 133 #define Is_global_interrupt_enabled() cpu_irq_is_enabled()
mbed_official 579:53297373a894 134
mbed_official 579:53297373a894 135 //@}
mbed_official 579:53297373a894 136
mbed_official 579:53297373a894 137 //@}
mbed_official 579:53297373a894 138
mbed_official 579:53297373a894 139 #ifdef __cplusplus
mbed_official 579:53297373a894 140 }
mbed_official 579:53297373a894 141 #endif
mbed_official 579:53297373a894 142
mbed_official 579:53297373a894 143 #endif /* UTILS_INTERRUPT_INTERRUPT_H */