/*
 * @brief LPC15xx Pin Interrupt and Pattern Match Registers and driver
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2013
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#ifndef __PININT_15XX_H_
#define __PININT_15XX_H_

#ifdef __cplusplus
extern "C" {
#endif

/** @defgroup PININT_15XX CHIP: LPC15xx Pin Interrupt driver
 * @ingroup CHIP_15XX_Drivers
 * @{
 */

/**
 * @brief LPC15xx Pin Interrupt and Pattern Match register block structure
 */
typedef struct {			/*!< PIN_INT Structure */
	__IO uint32_t ISEL;		/*!< Pin Interrupt Mode register */
	__IO uint32_t IENR;		/*!< Pin Interrupt Enable (Rising) register */
	__IO uint32_t SIENR;	/*!< Set Pin Interrupt Enable (Rising) register */
	__IO uint32_t CIENR;	/*!< Clear Pin Interrupt Enable (Rising) register */
	__IO uint32_t IENF;		/*!< Pin Interrupt Enable Falling Edge / Active Level register */
	__IO uint32_t SIENF;	/*!< Set Pin Interrupt Enable Falling Edge / Active Level register */
	__IO uint32_t CIENF;	/*!< Clear Pin Interrupt Enable Falling Edge / Active Level address */
	__IO uint32_t RISE;		/*!< Pin Interrupt Rising Edge register */
	__IO uint32_t FALL;		/*!< Pin Interrupt Falling Edge register */
	__IO uint32_t IST;		/*!< Pin Interrupt Status register */
} LPC_PIN_INT_T;

/**
 * LPC15xx Pin Interrupt channel values
 */
#define PININTCH0         (1 << 0)
#define PININTCH1         (1 << 1)
#define PININTCH2         (1 << 2)
#define PININTCH3         (1 << 3)
#define PININTCH4         (1 << 4)
#define PININTCH5         (1 << 5)
#define PININTCH6         (1 << 6)
#define PININTCH7         (1 << 7)
#define PININTCH(ch)      (1 << (ch))

/**
 * @brief	Initialize Pin interrupt block
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	Nothing
 * @note	This function should be used after the Chip_GPIO_Init() function.
 */
STATIC INLINE void Chip_PININT_Init(LPC_PIN_INT_T *pPININT)
{
	Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_PININT);
	Chip_SYSCTL_PeriphReset(RESET_PININT);
}

/**
 * @brief	De-Initialize Pin interrupt block
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_DeInit(LPC_PIN_INT_T *pPININT)
{
	Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_PININT);
}

/**
 * @brief	Configure the pins as edge sensitive in Pin interrupt block
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_SetPinModeEdge(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->ISEL &= ~pins;
}

/**
 * @brief	Configure the pins as level sensitive in Pin interrupt block
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_SetPinModeLevel(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->ISEL |= pins;
}

/**
 * @brief	Return current PININT rising edge or high level interrupt enable state
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	A bifield containing the high edge/level interrupt enables for each
 * interrupt. Bit 0 = PININT0, 1 = PININT1, etc.
 * For each bit, a 0 means the high edge/level interrupt is disabled, while a 1
 * means it's enabled.
 */
STATIC INLINE uint32_t Chip_PININT_GetHighEnabled(LPC_PIN_INT_T *pPININT)
{
	return pPININT->IENR;
}

/**
 * @brief	Enable high edge/level PININT interrupts for pins
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins to enable (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_EnableIntHigh(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->SIENR = pins;
}

/**
 * @brief	Disable high edge/level PININT interrupts for pins
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins to disable (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_DisableIntHigh(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->CIENR = pins;
}

/**
 * @brief	Return current PININT falling edge or low level interrupt enable state
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	A bifield containing the low edge/level interrupt enables for each
 * interrupt. Bit 0 = PININT0, 1 = PININT1, etc.
 * For each bit, a 0 means the low edge/level interrupt is disabled, while a 1
 * means it's enabled.
 */
STATIC INLINE uint32_t Chip_PININT_GetLowEnabled(LPC_PIN_INT_T *pPININT)
{
	return pPININT->IENF;
}

/**
 * @brief	Enable low edge/level PININT interrupts for pins
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins to enable (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_EnableIntLow(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->SIENF = pins;
}

/**
 * @brief	Disable low edge/level PININT interrupts for pins
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins to disable (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_DisableIntLow(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->CIENF = pins;
}

/**
 * @brief	Return pin states that have a detected latched high edge (RISE) state
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	PININT states (bit n = high) with a latched rise state detected
 */
STATIC INLINE uint32_t Chip_PININT_GetRiseStates(LPC_PIN_INT_T *pPININT)
{
	return pPININT->RISE;
}

/**
 * @brief	Clears pin states that had a latched high edge (RISE) state
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins with latched states to clear
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_ClearRiseStates(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->RISE = pins;
}

/**
 * @brief	Return pin states that have a detected latched falling edge (FALL) state
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	PININT states (bit n = high) with a latched rise state detected
 */
STATIC INLINE uint32_t Chip_PININT_GetFallStates(LPC_PIN_INT_T *pPININT)
{
	return pPININT->FALL;
}

/**
 * @brief	Clears pin states that had a latched falling edge (FALL) state
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pins with latched states to clear
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_ClearFallStates(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->FALL = pins;
}

/**
 * @brief	Get interrupt status from Pin interrupt block
 * @param	pPININT	: The base address of Pin interrupt block
 * @return	Interrupt status (bit n for PININTn = high means interrupt ie pending)
 */
STATIC INLINE uint32_t Chip_PININT_GetIntStatus(LPC_PIN_INT_T *pPININT)
{
	return pPININT->IST;
}

/**
 * @brief	Clear interrupt status in Pin interrupt block
 * @param	pPININT	: The base address of Pin interrupt block
 * @param	pins	: Pin interrupts to clear (ORed value of PININTCH*)
 * @return	Nothing
 */
STATIC INLINE void Chip_PININT_ClearIntStatus(LPC_PIN_INT_T *pPININT, uint32_t pins)
{
	pPININT->IST = pins;
}

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* __PININT_15XX_H_ */
