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60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#ifndef IRQ_H_
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#define IRQ_H_
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/**
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* @defgroup irq IRQ Handling
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* @ingroup kernel
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*
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* Provides an API to control interrupt processing.
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*
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* @{
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*/
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/**
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* @file
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* @brief IRQ driver interface
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*
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* @author Freie Universität Berlin, Computer Systems & Telematics, FeuerWhere project
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* @author Michael Baar <michael.baar@fu-berlin.de>
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* @version $Revision: 1410 $
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*
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* @note $Id$
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*/
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#include <stdbool.h>
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/**
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* @brief This function sets the IRQ disable bit in the status register
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* @return previous value of status register
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*/
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unsigned disableIRQ(void);
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/**
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* @brief This function clears the IRQ disable bit in the status register
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* @return previous value of status register
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*
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* @example irq-driver-example.c
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* @see restoreIRQ
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*/
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unsigned enableIRQ(void);
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/**
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* @brief This function restores the IRQ disable bit in the status register
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* to the value contained within passed state
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* @param state state to restore
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* @return previous state
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*
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* @example irq-driver-example.c
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* @see disableIRQ
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*/
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void restoreIRQ(unsigned state);
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/**
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* @brief Checks if the mcu is currently processing an interrupt.
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* @return true, if in interrupt service routine
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*/
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int inISR(void);
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/** @} */ // end of group dev_irq
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#endif /* IRQ_H_ */
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