interrupt_sam_nvic.h

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/*
 * Support and FAQ: visit <a href="https://www.microchip.com/support/">Microchip Support</a>
 */
 
#ifndef UTILS_INTERRUPT_INTERRUPT_H
#define UTILS_INTERRUPT_INTERRUPT_H
 
#include <compiler.h>
#include <parts.h>
 
#ifdef __cplusplus
extern "C" {
#endif



#  define ISR(func)   \
    void func (void)

#  define irq_initialize_vectors()   \
    do {                             \
    } while(0)

#  define irq_register_handler(int_num, int_prio)                      \
    NVIC_ClearPendingIRQ(    (IRQn_Type)int_num);                      \
    NVIC_SetPriority(    (IRQn_Type)int_num, int_prio);                \
    NVIC_EnableIRQ(      (IRQn_Type)int_num);                          \


 
#  define cpu_irq_enable()                     \
    do {                                       \
        g_interrupt_enabled = true;            \
        __DMB();                               \
        __enable_irq();                        \
    } while (0)
#  define cpu_irq_disable()                    \
    do {                                       \
        __disable_irq();                       \
        __DMB();                               \
        g_interrupt_enabled = false;           \
    } while (0)
 
typedef uint32_t irqflags_t;
 
#if !defined(__DOXYGEN__)
extern volatile bool g_interrupt_enabled;
#endif
 
#define cpu_irq_is_enabled()    (__get_PRIMASK() == 0)
 
static volatile uint32_t cpu_irq_critical_section_counter;
static volatile bool     cpu_irq_prev_interrupt_state;
 
static inline irqflags_t cpu_irq_save(void)
{
    volatile irqflags_t flags = cpu_irq_is_enabled();
    cpu_irq_disable();
    return flags;
}
 
static inline bool cpu_irq_is_enabled_flags(irqflags_t flags)
{
    return (flags);
}
 
static inline void cpu_irq_restore(irqflags_t flags)
{
    if (cpu_irq_is_enabled_flags(flags))
        cpu_irq_enable();
}
 
void cpu_irq_enter_critical(void);
void cpu_irq_leave_critical(void);

 
#define Enable_global_interrupt()            cpu_irq_enable()
#define Disable_global_interrupt()           cpu_irq_disable()
#define Is_global_interrupt_enabled()        cpu_irq_is_enabled()


 
#ifdef __cplusplus
}
#endif
 
#endif /* UTILS_INTERRUPT_INTERRUPT_H */