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/************************************************************************************
* arch/arm/src/lpc17xx/lpc17_gpio.h
*
* Copyright (C) 2010, 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_LPC17XX_LPC17_GPIO_H
#define __ARCH_ARM_SRC_LPC17XX_LPC17_GPIO_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.h>
#endif
#include <arch/lpc17xx/chip.h>
#include "chip/lpc17_gpio.h"
#include "chip/lpc17_pinconn.h"
#include "chip/lpc17_pinconfig.h"
/* Include the GPIO definitions for the selected LPC17xx family. */
#if defined(LPC176x)
# include "lpc176x_gpio.h"
#elif defined(LPC178x)
# include "lpc178x_gpio.h"
#else
# error "Unrecognized LPC17xx family"
#endif
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/* These tables have global scope only because they are shared between lpc17_gpio.c,
* lpc17_gpioint.c, and lpc17_gpiodbg.c
*/
#ifdef CONFIG_GPIO_IRQ
EXTERN uint64_t g_intedge0;
EXTERN uint64_t g_intedge2;
#endif
EXTERN const uint32_t g_fiobase[GPIO_NPORTS];
EXTERN const uint32_t g_intbase[GPIO_NPORTS];
/****************************************************************************
* Public Functions
****************************************************************************/
/************************************************************************************
* Name: lpc17_gpioirqinitialize
*
* Description:
* Initialize logic to support a second level of interrupt decoding for GPIO pins.
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void lpc17_gpioirqinitialize(void);
#else
# define lpc17_gpioirqinitialize()
#endif
/************************************************************************************
* Name: lpc17_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
int lpc17_configgpio(lpc17_pinset_t cfgset);
/************************************************************************************
* Name: lpc17_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
************************************************************************************/
void lpc17_gpiowrite(lpc17_pinset_t pinset, bool value);
/************************************************************************************
* Name: lpc17_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
************************************************************************************/
bool lpc17_gpioread(lpc17_pinset_t pinset);
/************************************************************************************
* Name: lpc17_gpioirqenable
*
* Description:
* Enable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void lpc17_gpioirqenable(int irq);
#else
# define lpc17_gpioirqenable(irq)
#endif
/************************************************************************************
* Name: lpc17_gpioirqdisable
*
* Description:
* Disable the interrupt for specified GPIO IRQ
*
************************************************************************************/
#ifdef CONFIG_GPIO_IRQ
void lpc17_gpioirqdisable(int irq);
#else
# define lpc17_gpioirqdisable(irq)
#endif
/************************************************************************************
* Function: lpc17_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the base address of the provided pinset.
*
************************************************************************************/
#ifdef CONFIG_DEBUG_GPIO
int lpc17_dumpgpio(lpc17_pinset_t pinset, const char *msg);
#else
# define lpc17_dumpgpio(p,m)
#endif
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_LPC17XX_LPC17_GPIO_H */
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