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/************************************************************************************
* arch/arm/src/stm32/chip/stm32_exti.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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_CHIP_STM32_EXTI_H
#define __ARCH_ARM_SRC_STM32_CHIP_STM32_EXTI_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#if defined(CONFIG_STM32_STM32F10XX)
# ifdef CONFIG_STM32_CONNECTIVITYLINE
# define STM32_NEXTI 20
# define STM32_EXTI_MASK 0x000fffff
# else
# define STM32_NEXTI 19
# define STM32_EXTI_MASK 0x0007ffff
# endif
#elif defined(CONFIG_STM32_STM32F40XX)
# define STM32_NEXTI 23
# define STM32_EXTI_MASK 0x007fffff
#endif
#define STM32_EXTI_BIT(n) (1 << (n))
/* Register Offsets *****************************************************************/
#define STM32_EXTI_IMR_OFFSET 0x0000 /* Interrupt mask register */
#define STM32_EXTI_EMR_OFFSET 0x0004 /* Event mask register */
#define STM32_EXTI_RTSR_OFFSET 0x0008 /* Rising Trigger selection register */
#define STM32_EXTI_FTSR_OFFSET 0x000c /* Falling Trigger selection register */
#define STM32_EXTI_SWIER_OFFSET 0x0010 /* Software interrupt event register */
#define STM32_EXTI_PR_OFFSET 0x0014 /* Pending register */
/* Register Addresses ***************************************************************/
#define STM32_EXTI_IMR (STM32_EXTI_BASE+STM32_EXTI_IMR_OFFSET)
#define STM32_EXTI_EMR (STM32_EXTI_BASE+STM32_EXTI_EMR_OFFSET)
#define STM32_EXTI_RTSR (STM32_EXTI_BASE+STM32_EXTI_RTSR_OFFSET)
#define STM32_EXTI_FTSR (STM32_EXTI_BASE+STM32_EXTI_FTSR_OFFSET)
#define STM32_EXTI_SWIER (STM32_EXTI_BASE+STM32_EXTI_SWIER_OFFSET)
#define STM32_EXTI_PR (STM32_EXTI_BASE+STM32_EXTI_PR_OFFSET)
/* Register Bitfield Definitions ****************************************************/
/* Interrupt mask register */
#define EXTI_IMR_BIT(n) STM32_EXTI_BIT(n) /* 1=Interrupt request from line x is not masked */
#define EXTI_IMR_SHIFT (0) /* Bits 0-X: Interrupt Mask for all lines */
#define EXTI_IMR_MASK STM32_EXTI_MASK
/* Event mask register */
#define EXTI_EMR_BIT(n) STM32_EXTI_BIT(n) /* 1=Event request from line x is not mask */
#define EXTI_EMR_SHIFT (0) /* Bits Bits 0-X: Event Mask for all lines */
#define EXTI_EMR_MASK STM32_EXTI_MASK
/* Rising Trigger selection register */
#define EXTI_RTSR_BIT(n) STM32_EXTI_BIT(n) /* 1=Rising trigger enabled (for Event and Interrupt) for input line */
#define EXTI_RTSR_SHIFT (0) /* Bits 0-X: Rising trigger event configuration bit for all lines */
#define EXTI_RTSR_MASK STM32_EXTI_MASK
/* Falling Trigger selection register */
#define EXTI_FTSR_BIT(n) STM32_EXTI_BIT(n) /* 1=Falling trigger enabled (for Event and Interrupt) for input line */
#define EXTI_FTSR_SHIFT (0) /* Bits 0-X: Falling trigger event configuration bitfor all lines */
#define EXTI_FTSR_MASK STM32_EXTI_MASK
/* Software interrupt event register */
#define EXTI_SWIER_BIT(n) STM32_EXTI_BIT(n) /* 1=Sets the corresponding pending bit in EXTI_PR */
#define EXTI_SWIER_SHIFT (0) /* Bits 0-X: Software Interrupt for all lines */
#define EXTI_SWIER_MASK STM32_EXTI_MASK
/* Pending register */
#define EXTI_IMR_BIT(n) STM32_EXTI_BIT(n) /* 1=Selected trigger request occurred */
#define EXTI_IMR_SHIFT (0) /* Bits 0-X: Pending bit for all lines */
#define EXTI_IMR_MASK STM32_EXTI_MASK
#endif /* __ARCH_ARM_SRC_STM32_CHIP_STM32_EXTI_H */
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