ritimer_5410x.h

/*
 * @brief LPC5410x RITimer driver
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2014
 * 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 __RITIMER_5410X_H_
#define __RITIMER_5410X_H_

#ifdef __cplusplus
extern "C" {
#endif

/** @defgroup RITIMER_5410X CHIP: LPC5410x Repetitive Interrupt Timer driver
 * @ingroup CHIP_5410X_DRIVERS
 * @{
 */

/**
 * @brief Repetitive Interrupt Timer register block structure
 */
typedef struct {				/*!< RITIMER Structure */
	__IO uint32_t  COMPVAL;		/*!< Compare register */
	__IO uint32_t  MASK;		/*!< Mask register */
	__IO uint32_t  CTRL;		/*!< Control register */
	__IO uint32_t  COUNTER;		/*!< 32-bit counter */
	__IO uint32_t  COMPVAL_H;	/*!< Compare register, upper 16-bits */
	__IO uint32_t  MASK_H;		/*!< Compare register, upper 16-bits */
	__I  uint32_t  reserved;
	__IO uint32_t  COUNTER_H;	/*!< Counter register, upper 16-bits */
} LPC_RITIMER_T;

/*
 * @brief RITIMER register support bitfields and mask
 */

/*
 * RIT control register
 */
/**	Set by H/W when the counter value equals the masked compare value */
#define RIT_CTRL_INT    ((uint32_t) (1))
/** Set timer enable clear to 0 when the counter value equals the masked compare value  */
#define RIT_CTRL_ENCLR  ((uint32_t) _BIT(1))
/** Set timer enable on debug */
#define RIT_CTRL_ENBR   ((uint32_t) _BIT(2))
/** Set timer enable */
#define RIT_CTRL_TEN    ((uint32_t) _BIT(3))

/**
 * @brief	Initialize the RIT
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
void Chip_RIT_Init(LPC_RITIMER_T *pRITimer);

/**
 * @brief	Shutdown the RIT
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
void Chip_RIT_DeInit(LPC_RITIMER_T *pRITimer);

/**
 * @brief	Enable Timer
 * @param	pRITimer		: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_Enable(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL |= RIT_CTRL_TEN;
}

/**
 * @brief	Disable Timer
 * @param	pRITimer		: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_Disable(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL &= ~RIT_CTRL_TEN;
}

/**
 * @brief	Enable timer debug
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_DebugEnable(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL |= RIT_CTRL_ENBR;
}

/**
 * @brief	Disable timer debug
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_DebugDisable(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL &= ~RIT_CTRL_ENBR;
}

/**
 * @brief	Enable clear on compare match
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_CompClearEnable(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL |= RIT_CTRL_ENCLR;
}

/**
 * @brief	Disable clear on compare match
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_CompClearDisable(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL &= ~RIT_CTRL_ENCLR;
}

/**
 * @brief	Check whether interrupt flag is set or not
 * @param	pRITimer	: RITimer peripheral selected
 * @return	Current interrupt status, either ET or UNSET
 */
IntStatus Chip_RIT_GetIntStatus(LPC_RITIMER_T *pRITimer);

/**
 * @brief	Set a tick value for the interrupt to time out
 * @param	pRITimer	: RITimer peripheral selected
 * @param	val			: value (in ticks) of the interrupt to be set
 * @return	None
 */
STATIC INLINE void Chip_RIT_SetCOMPVAL(LPC_RITIMER_T *pRITimer, uint32_t val)
{
	pRITimer->COMPVAL = val;
	pRITimer->COMPVAL_H = 0;
}

/**
 * @brief	Set a tick value for the interrupt to time out (48-bits)
 * @param	pRITimer	: RITimer peripheral selected
 * @param	val			: value (in ticks) of the interrupt to be set, 48-bits max
 * @return	None
 */
STATIC INLINE void Chip_RIT_SetCOMPVAL64(LPC_RITIMER_T *pRITimer, uint64_t val)
{
	pRITimer->COMPVAL = (uint32_t) (val & 0xFFFFFFFF);
	pRITimer->COMPVAL_H = (uint32_t) ((val >> 32) & 0xFFFF);
}

/**
 * @brief	Enables or clears the RIT or interrupt
 * @param	pRITimer	: RITimer peripheral selected
 * @param	val			: RIT to be set, one or more RIT_CTRL_* values
 * @return	None
 */
STATIC INLINE void Chip_RIT_EnableCTRL(LPC_RITIMER_T *pRITimer, uint32_t val)
{
	pRITimer->CTRL |= val;
}

/**
 * @brief	Clears the RIT interrupt
 * @param	pRITimer	: RITimer peripheral selected
 * @return	None
 */
STATIC INLINE void Chip_RIT_ClearInt(LPC_RITIMER_T *pRITimer)
{
	pRITimer->CTRL |= RIT_CTRL_INT;
}

/**
 * @brief	Returns the current RIT Counter value
 * @param	pRITimer	: RITimer peripheral selected
 * @return	the current timer counter value
 */
STATIC INLINE uint32_t Chip_RIT_GetCounter(LPC_RITIMER_T *pRITimer)
{
	return pRITimer->COUNTER;
}

/**
 * @brief	Returns the current RIT Counter value (48-bit)
 * @param	pRITimer	: RITimer peripheral selected
 * @return	the current timer counter value
 */
STATIC INLINE uint64_t Chip_RIT_GetCounter64(LPC_RITIMER_T *pRITimer)
{
	uint64_t retVal;

	retVal = (uint64_t) pRITimer->COUNTER;
	retVal = retVal | (((uint64_t) pRITimer->COUNTER_H) << 32);

	return retVal;
}

/**
 * @brief	Set timer interval value
 * @param	pRITimer		: RITimer peripheral selected
 * @param	time_interval	: timer interval value (ms)
 * @return	None
 */
void Chip_RIT_SetTimerInterval(LPC_RITIMER_T *pRITimer, uint32_t time_interval);

/**
 * @brief	Set timer interval value (48-bit)
 * @param	pRITimer		: RITimer peripheral selected
 * @param	time_interval	: timer interval value (ms)
 * @return	None
 */
void Chip_RIT_SetTimerInterval64(LPC_RITIMER_T *pRITimer, uint64_t time_interval);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* __RITIMER_5410X_H_ */