70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
/*
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* File : irq.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-02-24 Bernard first version
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* 2006-05-03 Bernard add IRQ_DEBUG
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*/
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#include <rthw.h>
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#include <rtthread.h>
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/* #define IRQ_DEBUG */
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/**
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* @addtogroup Kernel
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*/
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/*@{*/
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volatile rt_uint8_t rt_interrupt_nest;
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/**
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* This function will be invoked by BSP, when enter interrupt service routine
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*
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* @note please don't invoke this routine in application
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*
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* @see rt_interrupt_leave
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*/
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void rt_interrupt_enter()
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{
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rt_base_t level;
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#ifdef IRQ_DEBUG
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rt_kprintf("irq comming..., irq nest:%d\n", rt_interrupt_nest);
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#endif
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level = rt_hw_interrupt_disable();
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rt_interrupt_nest ++;
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rt_hw_interrupt_enable(level);
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}
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/**
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* This function will be invoked by BSP, when leave interrupt service routine
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*
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* @note please don't invoke this routine in application
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*
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* @see rt_interrupt_enter
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*/
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void rt_interrupt_leave()
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{
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rt_base_t level;
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#ifdef IRQ_DEBUG
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rt_kprintf("irq leave, irq nest:%d\n", rt_interrupt_nest);
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#endif
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level = rt_hw_interrupt_disable();
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rt_interrupt_nest --;
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rt_hw_interrupt_enable(level);
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}
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/*@}*/
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