irq.c.svn-base

RT-Thread是发展中的下一代微内核嵌入式实时操作系统

/*
 * File      : irq.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.fayfayspace.org/license/LICENSE.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2006-02-24     Bernard      first version
 * 2006-05-03     Bernard      add IRQ_DEBUG
 */

#include <rtthread.h>

// #define IRQ_DEBUG

/**
 * @addtogroup Kernel
 */
/*@{*/

rt_uint32 rt_interrupt_nest;

/**
 * @brief enter interrupt service routine
 *
 * this function will be invoked by BSP, when enter interrupt service routine
 *
 * @note please don't not invoke this routine in application
 *
 * @see rt_interrupt_leave
 */
void rt_interrupt_enter()
{
#ifdef IRQ_DEBUG
	rt_kprintf("irq comming..., irq nest:%d\n", rt_interrupt_nest);
#endif
	rt_interrupt_nest ++;
}

/**
 * @brief enter interrupt service routine
 *
 * this function will be invoked by BSP, when leave interrupt service routine
 *
 * @note please don't not invoke this routine in application
 *
 * @see rt_interrupt_enter
 */
void rt_interrupt_leave()
{
#ifdef IRQ_DEBUG
	rt_kprintf("irq leave, irq nest:%d\n", rt_interrupt_nest);
#endif
	rt_interrupt_nest --;
}

/*@}*/