interrupt_sam_nvic.h

/* ----------------------------------------------------------------------------
 *         SAM Software Package License
 * ----------------------------------------------------------------------------
 * Copyright (c) 2011-2012, Atmel Corporation
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following condition is met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ----------------------------------------------------------------------------
 */

#ifndef UTILS_INTERRUPT_INTERRUPT_H
#define UTILS_INTERRUPT_INTERRUPT_H

#include "../chip.h"

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

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

#  define irq_register_handler(...)                    \
    do {                                           \
    } while(0)


#  define cpu_irq_enable()                             \
    do {                                           \
        g_interrupt_enabled = 1;            \
        __DMB();                               \
        __enable_irq();                        \
    } while (0)
#  define cpu_irq_disable()                            \
    do {                                           \
        __disable_irq();                       \
        __DMB();                               \
        g_interrupt_enabled = 0;           \
    } while (0)

typedef uint32_t irqflags_t;
extern int g_interrupt_enabled;

static inline irqflags_t cpu_irq_save(void)
{
    irqflags_t flags = g_interrupt_enabled;
    cpu_irq_disable();
    return flags;
}

static inline int 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();
}

#define cpu_irq_is_enabled()    g_interrupt_enabled

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



#endif /* UTILS_INTERRUPT_INTERRUPT_H */