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/************************************************************************************
* arch/arm/src/sam34/sam_gpio.h
*
* Copyright (C) 2009-2011, 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 __ARCH_ARM_SRC_SAM34_SAM_GPIO_H
#define __ARCH_ARM_SRC_SAM34_SAM_GPIO_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include "chip.h"
#if defined(CONFIG_ARCH_CHIP_SAM3U)
# include "sam3u_gpio.h"
#elif defined(CONFIG_ARCH_CHIP_SAM4L)
# include "sam4l_gpio.h"
#elif defined(CONFIG_ARCH_CHIP_SAM4S)
# include "sam4s_gpio.h"
#else
# error Unrecognized SAM architecture
#endif
/************************************************************************************
* Definitions
************************************************************************************/
/* Configuration ********************************************************************/
#if defined(CONFIG_GPIOA_IRQ) || defined(CONFIG_GPIOB_IRQ) || defined(CONFIG_GPIOC_IRQ)
# define CONFIG_GPIO_IRQ 1
#else
# undef CONFIG_GPIO_IRQ
#endif
#ifndef CONFIG_DEBUG
# undef CONFIG_DEBUG_GPIO
#endif
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Inline Functions
************************************************************************************/
#ifndef __ASSEMBLY__
/************************************************************************************
* Public Data
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
/************************************************************************************
* Name: sam_gpioirqinitialize
*
* Description:
* Initialize logic to support a second level of interrupt decoding for GPIO pins.
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void sam_gpioirqinitialize(void);
#else
# define sam_gpioirqinitialize()
#endif
/************************************************************************************
* Name: sam_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
int sam_configgpio(gpio_pinset_t cfgset);
/************************************************************************************
* Name: sam_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
************************************************************************************/
void sam_gpiowrite(gpio_pinset_t pinset, bool value);
/************************************************************************************
* Name: sam_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
************************************************************************************/
bool sam_gpioread(gpio_pinset_t pinset);
/************************************************************************************
* Name: sam_gpioirq
*
* Description:
* Configure an interrupt for the specified GPIO pin.
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void sam_gpioirq(gpio_pinset_t pinset);
#else
# define sam_gpioirq(pinset)
#endif
/************************************************************************************
* Name: sam_gpioirqenable
*
* Description:
* Enable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void sam_gpioirqenable(int irq);
#else
# define sam_gpioirqenable(irq)
#endif
/************************************************************************************
* Name: sam_gpioirqdisable
*
* Description:
* Disable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void sam_gpioirqdisable(int irq);
#else
# define sam_gpioirqdisable(irq)
#endif
/************************************************************************************
* Function: sam_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the base address of the provided pinset.
*
************************************************************************************/
#ifdef CONFIG_DEBUG_GPIO
int sam_dumpgpio(uint32_t pinset, const char *msg);
#else
# define sam_dumpgpio(p,m)
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_SAM34_SAM_GPIO_H */
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