rt-thread/bsp/lpc824/Libraries/peri_driver/sctimer/sct_8xx.h

/*
 * @brief LPC8xx State Configurable Timer (SCT) Chip 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 licenser 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 __SCT_8XX_H_
#define __SCT_8XX_H_

#ifdef __cplusplus
extern "C" {
#endif

/** @defgroup SCT_8XX CHIP: LPC8xx State Configurable Timer driver
 * @ingroup CHIP_8XX_Drivers
 * @{
 */

/*
 * @brief SCT Module configuration
 */
#define CONFIG_SCT_nEV   (8)			/*!< Number of events */
#define CONFIG_SCT_nRG   (8)			/*!< Number of match/compare registers */
#define CONFIG_SCT_nOU   (6)			/*!< Number of outputs */

/**
 * @brief State Configurable Timer register block structure
 */
typedef struct {
	__IO  uint32_t CONFIG;				/*!< configuration Register (offset (0x000) */
	union {
		__IO uint32_t CTRL_U;			/*!< control Register */
		struct {
			__IO uint16_t CTRL_L;		/*!< low control register */
			__IO uint16_t CTRL_H;		/*!< high control register */
		};
	};
	union {
		__IO uint32_t LIMIT_U;			/*!< limit Register */
		struct {
			__IO uint16_t LIMIT_L;		/*!< limit register for counter L */
			__IO uint16_t LIMIT_H;		/*!< limit register for counter H */
		};
	};

	union {
		__IO uint32_t HALT_U;			/*!< halt Register */
		struct {
			__IO uint16_t HALT_L;		/*!< halt register for counter L */
			__IO uint16_t HALT_H;		/*!< halt register for counter H */
		};
	};

	union {
		__IO uint32_t STOP_U;			/*!< stop Register */
		struct {
			__IO uint16_t STOP_L;		/*!< stop register for counter L */
			__IO uint16_t STOP_H;		/*!< stop register for counter H */
		};

	};

	union {
		__IO uint32_t START_U;			/*!< start Register */
		struct {
			__IO uint16_t START_L;		/*!< start register for counter L */
			__IO uint16_t START_H;		/*!< start register for counter H */
		};

	};

	uint32_t RESERVED1[10];				/*!< 0x018 - 0x03C reserved */

	union {
		__IO uint32_t COUNT_U;			/*!< counter register (offset 0x040)*/
		struct {
			__IO uint16_t COUNT_L;		/*!< counter register for counter L */
			__IO uint16_t COUNT_H;		/*!< counter register for counter H */
		};
	};

	union {
		__IO uint32_t STATE_U;			/*!< State register */
		struct {
			__IO uint16_t STATE_L;		/*!< state register for counter L */
			__IO uint16_t STATE_H;		/*!< state register for counter H */
		};
	};

	__I  uint32_t INPUT;				/*!< input register */
	union {
		__IO uint32_t REGMODE_U;		/*!< RegMode register */
		struct {
			__IO uint16_t REGMODE_L;	/*!< match - capture registers mode register L */
			__IO uint16_t REGMODE_H;	/*!< match - capture registers mode register H */
		};
	};

	__IO uint32_t OUTPUT;				/*!< output register */
	__IO uint32_t OUTPUTDIRCTRL;		/*!< output counter direction Control Register */
	__IO uint32_t RES;					/*!< conflict resolution register */
	__IO uint32_t DMAREQ0;				/*!< DMA0 Request Register */
	__IO uint32_t DMAREQ1;				/*!< DMA1 Request Register */

	uint32_t RESERVED2[35];				/*!< 0x064 - 0x0EC reserved */

	__IO uint32_t EVEN;					/*!< event enable register (offset 0x0F0)*/
	__IO uint32_t EVFLAG;				/*!< event flag register */
	__IO uint32_t CONEN;				/*!< conflict enable register */
	__IO uint32_t CONFLAG;				/*!< conflict flag register */
	union {
		__IO union {					/*!< ... Match / Capture value */
			uint32_t U;					/*!<  MATCH[i].U  Unified 32-bit register */
			struct {
				uint16_t L;				/*!<  MATCH[i].L  Access to L value */
				uint16_t H;				/*!<  MATCH[i].H  Access to H value */
			};
		} MATCH[CONFIG_SCT_nRG];

		__I union {
			uint32_t U;					/*!<  CAP[i].U  Unified 32-bit register */
			struct {
				uint16_t L;				/*!<  CAP[i].L  Access to L value */
				uint16_t H;				/*!<  CAP[i].H  Access to H value */
			};
		} CAP[CONFIG_SCT_nRG];
	};

	uint32_t RESERVED3[56];				/*!< 0x120 - 0x1FC reserved */

	union {
		__IO union {					/*!< ...Match Reload / Capture Control value (offset 0x200) */
			uint32_t U;					/*!<  MATCHREL[i].U  Unified 32-bit register */
			struct {
				uint16_t L;				/*!<  MATCHREL[i].L  Access to L value */
				uint16_t H;				/*!<  MATCHREL[i].H  Access to H value */
			};
		} MATCHREL[CONFIG_SCT_nRG];

		__IO union {
			uint32_t U;					/*!<  CAPCTRL[i].U  Unified 32-bit register */
			struct {
				uint16_t L;				/*!<  CAPCTRL[i].L  Access to L value */
				uint16_t H;				/*!<  CAPCTRL[i].H  Access to H value */
			};
		} CAPCTRL[CONFIG_SCT_nRG];
	};

	uint32_t RESERVED4[56];				/*!< 0x220 - 0x2FC reserved */

	__IO struct {						/*!< EV[i].STATE / EV[i].CTRL (offset 0x300) */
		uint32_t STATE;					/*!< Event State Register */
		uint32_t CTRL;					/*!< Event Control Register */
	} EV[CONFIG_SCT_nEV];

	uint32_t RESERVED5[112];			/*!< 0x340 - 0x4FC reserved */

	__IO struct {						/*!< OUT[i].SET / OUT[i].CLR  (offset 0x500) */
		uint32_t SET;					/*!< Output n Set Register */
		uint32_t CLR;					/*!< Output n Clear Register */
	} OUT[CONFIG_SCT_nOU];

} LPC_SCT_T;

/* Reserved bits masks for registers */
#define SCT_CONFIG_RESERVED             0xfff80000
#define SCT_CTRL_RESERVED               ((7<<13)|(7u<<29))
#define SCT_LIMIT_RESERVED              (~(0x3f|(0x3f<<16))
#define SCT_HALT_RESERVED               (~(0x3f|(0x3f<<16))
#define SCT_STOP_RESERVED               (~(0x3f|(0x3f<<16))
#define SCT_START_RESERVED              (~(0x3f|(0x3f<<16))
#define SCT_STATE_RESERVED              (~(0x1f|(0x1f<<16))
#define SCT_INPUT_RESERVED              (~(0xf|(0xf<<16))
#define SCT_REGMODE_RESERVED            (~(0x1f|(0x1f<<16))
#define SCT_OUTPUT_RESERVED             (~0xf)
#define SCT_OUTPUTDIRCTRL_RESERVED      (~0xff)
#define SCT_RES_RESERVED                (~0xff)
#define SCT_EVEN_RESERVED               (~0x3f)
#define SCT_EVFLAG_RESERVED             (~0x3f)
#define SCT_CONEN_RESERVED              (~0xf)
#define SCT_CONFLAG_RESERVED            (~(0xf|(3u<<30)))
#define SCT_CAPCTRL_RESERVED            (~(0x3f|(0x3f<<16)))
#define SCT_EVn_STATE_RESERVED          (~3)
#define SCT_EVn_CTRL_RESERVED           (0xff800000)
#define SCT_OUTn_SET_RESERVED           (~0x3f)
#define SCT_OUTn_CLR_RESERVED           (~0x3f)

/*
 * @brief Macro defines for SCT configuration register
 */
#define SCT_CONFIG_16BIT_COUNTER        0x00000000				/*!< Operate as 2 16-bit counters */
#define SCT_CONFIG_32BIT_COUNTER        0x00000001				/*!< Operate as 1 32-bit counter */

#define SCT_CONFIG_CLKMODE_BUSCLK       (0x0 << 1)				/*!< Bus clock */
#define SCT_CONFIG_CLKMODE_SCTCLK       (0x1 << 1)				/*!< SCT clock */
#define SCT_CONFIG_CLKMODE_INCLK        (0x2 << 1)				/*!< Input clock selected in CLKSEL field */
#define SCT_CONFIG_CLKMODE_INEDGECLK    (0x3 << 1)				/*!< Input clock edge selected in CLKSEL field */

#define SCT_CONFIG_NORELOAD_U           (0x1 << 7)				/*!< Prevent match register reload */
#define SCT_CONFIG_NORELOAD_L           (0x1 << 7)				/*!< Prevent lower match register reload */
#define SCT_CONFIG_NORELOAD_H           (0x1 << 8)				/*!< Prevent upper match register reload */

#define SCT_CONFIG_AUTOLIMIT_U          (0x1 << 17)				/*!< Limits counter(unified) based on MATCH0 */
#define SCT_CONFIG_AUTOLIMIT_L          (0x1 << 17)				/*!< Limits counter(L) based on MATCH0 */
#define SCT_CONFIG_AUTOLIMIT_H          (0x1 << 18)				/*!< Limits counter(L) based on MATCH0 */

/*
 * @brief Macro defines for SCT control register
 */
#define COUNTUP_TO_LIMIT_THEN_CLEAR_TO_ZERO     0				/*!< Direction for low or unified counter */
#define COUNTUP_TO LIMIT_THEN_COUNTDOWN_TO_ZERO 1

#define SCT_CTRL_STOP_L                 (1 << 1)				/*!< Stop low counter */
#define SCT_CTRL_HALT_L                 (1 << 2)				/*!< Halt low counter */
#define SCT_CTRL_CLRCTR_L               (1 << 3)				/*!< Clear low or unified counter */
#define SCT_CTRL_BIDIR_L(x)             (((x) & 0x01) << 4)		/*!< Bidirectional bit */
#define SCT_CTRL_PRE_L(x)               (((x) & 0xFF) << 5)		/*!< Prescale clock for low or unified counter */

#define COUNTUP_TO_LIMIT_THEN_CLEAR_TO_ZERO     0				/*!< Direction for high counter */
#define COUNTUP_TO LIMIT_THEN_COUNTDOWN_TO_ZERO 1
#define SCT_CTRL_STOP_H                 (1 << 17)				/*!< Stop high counter */
#define SCT_CTRL_HALT_H                 (1 << 18)				/*!< Halt high counter */
#define SCT_CTRL_CLRCTR_H               (1 << 19)				/*!< Clear high counter */
#define SCT_CTRL_BIDIR_H(x)             (((x) & 0x01) << 20)
#define SCT_CTRL_PRE_H(x)               (((x) & 0xFF) << 21)	/*!< Prescale clock for high counter */

/*
 * @brief Macro defines for SCT Conflict resolution register
 */
#define SCT_RES_NOCHANGE                (0)
#define SCT_RES_SET_OUTPUT              (1)
#define SCT_RES_CLEAR_OUTPUT            (2)
#define SCT_RES_TOGGLE_OUTPUT           (3)

/**
 * SCT Match register values enum
 */
typedef enum CHIP_SCT_MATCH_REG {
	SCT_MATCH_0 = 0,	/*!< SCT Match register 0 */
	SCT_MATCH_1 = 1,	/*!< SCT Match register 1 */
	SCT_MATCH_2 = 2,	/*!< SCT Match register 2 */
	SCT_MATCH_3 = 3,	/*!< SCT Match register 3 */
	SCT_MATCH_4 = 4		/*!< SCT Match register 4 */
} CHIP_SCT_MATCH_REG_T;

/**
 * SCT Event values enum
 */
typedef enum CHIP_SCT_EVENT {
	SCT_EVT_0  = (1 << 0),	/*!< Event 0 */
	SCT_EVT_1  = (1 << 1),	/*!< Event 1 */
	SCT_EVT_2  = (1 << 2),	/*!< Event 2 */
	SCT_EVT_3  = (1 << 3),	/*!< Event 3 */
	SCT_EVT_4  = (1 << 4)	/*!< Event 4 */
} CHIP_SCT_EVENT_T;

/**
 * @brief	Configures the State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	value	: The 32-bit CONFIG register value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_Config(LPC_SCT_T *pSCT, uint32_t value)
{
	pSCT->CONFIG = value;
}

/**
 * @brief	Set or Clear the Control register
 * @param	pSCT			: Pointer to SCT register block
 * @param	value			: SCT Control register value
 * @param	ena             : ENABLE - To set the fields specified by value
 *                          : DISABLE - To clear the field specified by value
 * @return	Nothing
 * Set or clear the control register bits as specified by the \a value
 * parameter. If \a ena is set to ENABLE, the mentioned register fields
 * will be set. If \a ena is set to DISABLE, the mentioned register
 * fields will be cleared
 */
void Chip_SCT_SetClrControl(LPC_SCT_T *pSCT, uint32_t value, FunctionalState ena);

/**
 * @brief	Set the conflict resolution
 * @param	pSCT			: Pointer to SCT register block
 * @param	outnum			: Output number
 * @param	value           : Output value
 *                          - SCT_RES_NOCHANGE		:No change
 *					        - SCT_RES_SET_OUTPUT	:Set output
 *					        - SCT_RES_CLEAR_OUTPUT	:Clear output
 *					        - SCT_RES_TOGGLE_OUTPUT :Toggle output
 *                          : SCT_RES_NOCHANGE
 *                          : DISABLE - To clear the field specified by value
 * @return	Nothing
 * Set conflict resolution for the output \a outnum
 */
void Chip_SCT_SetConflictResolution(LPC_SCT_T *pSCT, uint8_t outnum, uint8_t value);

/**
 * @brief	Set unified count value in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	count	: The 32-bit count value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_SetCount(LPC_SCT_T *pSCT, uint32_t count)
{
	pSCT->COUNT_U = count;
}

/**
 * @brief	Set lower count value in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	count	: The 16-bit count value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_SetCountL(LPC_SCT_T *pSCT, uint16_t count)
{
	pSCT->COUNT_L = count;
}

/**
 * @brief	Set higher count value in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	count	: The 16-bit count value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_SetCountH(LPC_SCT_T *pSCT, uint16_t count)
{
	pSCT->COUNT_H = count;
}

/**
 * @brief	Set unified match count value in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	n		: Match register value
 * @param	value	: The 32-bit match count value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_SetMatchCount(LPC_SCT_T *pSCT, CHIP_SCT_MATCH_REG_T n, uint32_t value)
{
	pSCT->MATCH[n].U = value;
}

/**
 * @brief	Set unified match reload count value in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	n		: Match register value
 * @param	value	: The 32-bit match count reload value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_SetMatchReload(LPC_SCT_T *pSCT, CHIP_SCT_MATCH_REG_T n, uint32_t value)
{
	pSCT->MATCHREL[n].U = value;
}

/**
 * @brief	Enable the interrupt for the specified event in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	evt		: Event value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_EnableEventInt(LPC_SCT_T *pSCT, CHIP_SCT_EVENT_T evt)
{
	pSCT->EVEN = evt | (pSCT->EVEN & ~SCT_EVEN_RESERVED);
}

/**
 * @brief	Disable the interrupt for the specified event in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	evt		: Event value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_DisableEventInt(LPC_SCT_T *pSCT, CHIP_SCT_EVENT_T evt)
{
	pSCT->EVEN &= ~(evt | SCT_EVEN_RESERVED);
}

/**
 * @brief	Clear the specified event flag in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	evt		: Event value
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_ClearEventFlag(LPC_SCT_T *pSCT, CHIP_SCT_EVENT_T evt)
{
	pSCT->EVFLAG = evt | (pSCT->EVFLAG & ~SCT_EVFLAG_RESERVED);
}

/**
 * @brief	Set control register in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	value	: Value (ORed value of SCT_CTRL_* bits)
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_SetControl(LPC_SCT_T *pSCT, uint32_t value)
{
	pSCT->CTRL_U = value | (pSCT->CTRL_U & ~SCT_CTRL_RESERVED);
}

/**
 * @brief	Clear control register in State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @param	value	: Value (ORed value of SCT_CTRL_* bits)
 * @return	Nothing
 */
STATIC INLINE void Chip_SCT_ClearControl(LPC_SCT_T *pSCT, uint32_t value)
{
	pSCT->CTRL_U &= ~(value | SCT_CTRL_RESERVED);
}

/**
 * @brief	Initializes the State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @return	Nothing
 */
void Chip_SCT_Init(LPC_SCT_T *pSCT);

/**
 * @brief	Deinitializes the State Configurable Timer
 * @param	pSCT	: The base of SCT peripheral on the chip
 * @return	Nothing
 */
void Chip_SCT_DeInit(LPC_SCT_T *pSCT);

/**
 * @}
 */

#ifdef __cplusplus
}

#endif

#endif /* __SCT_8XX_H_ */