nuttx/arch/arm/src/stm32/stm32_exti.h

/************************************************************************************
 * arch/arm/src/stm32/stm32_exti.h
 *
 *   Copyright (C) 2009, 2012 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 __ARCH_ARM_SRC_STM32_STM32_EXTI_H
#define __ARCH_ARM_SRC_STM32_STM32_EXTI_H

/************************************************************************************
 * Included Files
 ************************************************************************************/

#include <nuttx/config.h>

#include <nuttx/irq.h>

#include "chip.h"
#include "chip/stm32_exti.h"

/************************************************************************************
 * Public Data
 ************************************************************************************/

#ifndef __ASSEMBLY__

#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif

/************************************************************************************
 * Public Function Prototypes
 ************************************************************************************/

/************************************************************************************
 * Name: stm32_gpiosetevent
 *
 * Description:
 *   Sets/clears GPIO based event and interrupt triggers.
 *
 * Parameters:
 *  - pinset: gpio pin configuration
 *  - rising/falling edge: enables
 *  - event:  generate event when set
 *  - func:   when non-NULL, generate interrupt
 *
 * Returns:
 *  The previous value of the interrupt handler function pointer.  This value may,
 *  for example, be used to restore the previous handler when multiple handlers are
 *  used.
 *
 ************************************************************************************/

EXTERN xcpt_t stm32_gpiosetevent(uint32_t pinset, bool risingedge, bool fallingedge,
                                 bool event, xcpt_t func);

/****************************************************************************
 * Name: stm32_exti_alarm
 *
 * Description:
 *   Sets/clears EXTI alarm interrupt.
 *
 * Parameters:
 *  - rising/falling edge: enables interrupt on rising/falling edget
 *  - event:  generate event when set
 *  - func:   when non-NULL, generate interrupt
 *
 * Returns:
 *   The previous value of the interrupt handler function pointer.  This
 *   value may, for example, be used to restore the previous handler when
 *   multiple handlers are used.
 *
 ****************************************************************************/

#ifdef CONFIG_RTC_ALARM
EXTERN xcpt_t stm32_exti_alarm(bool risingedge, bool fallingedge, bool event,
                               xcpt_t func);
#endif

#undef EXTERN
#if defined(__cplusplus)
}
#endif

#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_STM32_STM32_EXTI_H */