212 lines
6.8 KiB
C
212 lines
6.8 KiB
C
/************************************************************************************
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* arch/arm/src/sam34/sam_gpio.h
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*
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* Copyright (C) 2009-2011, 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_SAM34_SAM_GPIO_H
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#define __ARCH_ARM_SRC_SAM34_SAM_GPIO_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "chip.h"
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#if defined(CONFIG_ARCH_CHIP_SAM3U)
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# include "sam3u_gpio.h"
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#elif defined(CONFIG_ARCH_CHIP_SAM3X) || defined(CONFIG_ARCH_CHIP_SAM3A)
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# include "sam3x_gpio.h"
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#elif defined(CONFIG_ARCH_CHIP_SAM4L)
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# include "sam4l_gpio.h"
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#elif defined(CONFIG_ARCH_CHIP_SAM4S)
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# include "sam4s_gpio.h"
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#else
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# error Unrecognized SAM architecture
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#endif
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* Configuration ********************************************************************/
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#if defined(CONFIG_GPIOA_IRQ) || defined(CONFIG_GPIOB_IRQ) || defined(CONFIG_GPIOC_IRQ)
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# define CONFIG_GPIO_IRQ 1
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#else
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# undef CONFIG_GPIO_IRQ
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#endif
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#ifndef CONFIG_DEBUG
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# undef CONFIG_DEBUG_GPIO
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#endif
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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#ifndef __ASSEMBLY__
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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/************************************************************************************
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* Name: sam_gpioirqinitialize
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*
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* Description:
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* Initialize logic to support a second level of interrupt decoding for GPIO pins.
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*
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************************************************************************************/
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#ifdef CONFIG_GPIO_IRQ
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void sam_gpioirqinitialize(void);
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#else
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# define sam_gpioirqinitialize()
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#endif
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/************************************************************************************
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* Name: sam_configgpio
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*
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* Description:
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* Configure a GPIO pin based on bit-encoded description of the pin.
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*
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************************************************************************************/
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int sam_configgpio(gpio_pinset_t cfgset);
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/************************************************************************************
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* Name: sam_gpiowrite
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*
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* Description:
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* Write one or zero to the selected GPIO pin
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*
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************************************************************************************/
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void sam_gpiowrite(gpio_pinset_t pinset, bool value);
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/************************************************************************************
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* Name: sam_gpioread
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*
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* Description:
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* Read one or zero from the selected GPIO pin
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*
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************************************************************************************/
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bool sam_gpioread(gpio_pinset_t pinset);
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/************************************************************************************
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* Name: sam_gpioirq
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*
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* Description:
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* Configure an interrupt for the specified GPIO pin.
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*
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************************************************************************************/
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#ifdef CONFIG_GPIO_IRQ
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void sam_gpioirq(gpio_pinset_t pinset);
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#else
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# define sam_gpioirq(pinset)
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#endif
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/************************************************************************************
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* Name: sam_gpioirqenable
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*
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* Description:
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* Enable the interrupt for specified GPIO IRQ
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*
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************************************************************************************/
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#ifdef CONFIG_GPIO_IRQ
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void sam_gpioirqenable(int irq);
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#else
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# define sam_gpioirqenable(irq)
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#endif
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/************************************************************************************
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* Name: sam_gpioirqdisable
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*
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* Description:
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* Disable the interrupt for specified GPIO IRQ
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*
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************************************************************************************/
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#ifdef CONFIG_GPIO_IRQ
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void sam_gpioirqdisable(int irq);
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#else
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# define sam_gpioirqdisable(irq)
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#endif
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/************************************************************************************
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* Function: sam_dumpgpio
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*
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* Description:
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* Dump all GPIO registers associated with the base address of the provided pinset.
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*
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************************************************************************************/
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#ifdef CONFIG_DEBUG_GPIO
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int sam_dumpgpio(uint32_t pinset, const char *msg);
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#else
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# define sam_dumpgpio(p,m)
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_SAM34_SAM_GPIO_H */
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