/****************************************************************************
* include/nuttx/irq.h
*
* Copyright (C) 2007-2011, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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 __INCLUDE_NUTTX_IRQ_H
#define __INCLUDE_NUTTX_IRQ_H
/****************************************************************************
* Included Files
****************************************************************************/
#ifndef __ASSEMBLY__
# include <assert.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* IRQ detach is a convenience definition. Detaching an interrupt handler
* is equivalent to setting a NULL interrupt handler.
*/
#ifndef __ASSEMBLY__
# define irq_detach(isr) irq_attach(isr, NULL)
#endif
/****************************************************************************
* Public Types
****************************************************************************/
/* This struct defines the way the registers are stored */
#ifndef __ASSEMBLY__
typedef int (*xcpt_t)(int irq, FAR void *context);
#endif
/* Now include architecture-specific types */
#include <arch/irq.h>
/****************************************************************************
* Public Variables
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: irq_attach
*
* Description:
* Configure the IRQ subsystem so that IRQ number 'irq' is dispatched to
* 'isr'
*
****************************************************************************/
int irq_attach(int irq, xcpt_t isr);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __INCLUDE_NUTTX_IRQ_H */
