lpc_timer.h

/**********************************************************************
* $Id$      lpc_timer.h         2011-06-02
*//**
* @file     lpc_timer.h
* @brief    Contains all macro definitions and function prototypes
*           support for Timer firmware library on LPC
* @version  1.0
* @date     02. June. 2011
* @author   NXP MCU SW Application Team
* 
* Copyright(C) 2011, NXP Semiconductor
* All rights reserved.
*
***********************************************************************
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* products. This software is supplied "AS IS" without any warranties.
* NXP Semiconductors assumes no responsibility or liability for the
* use of the software, conveys no license or title under any patent,
* copyright, or mask work right to the product. NXP Semiconductors
* reserves the right to make changes in the software without
* notification. NXP Semiconductors also make no representation or
* warranty that such application will be suitable for the specified
* use without further testing or modification.
* Permission to use, copy, modify, and distribute this software and its
* documentation is hereby granted, under NXP Semiconductors'
* relevant copyright 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.
**********************************************************************/

/* Peripheral group ----------------------------------------------------------- */
/** @defgroup TIMER TIM (Timer)
 * @ingroup LPC_CMSIS_FwLib_Drivers
 * @{
 */

#ifndef __LPC_TIMER_H_
#define __LPC_TIMER_H_

/* Includes ------------------------------------------------------------------- */
#include "LPC407x_8x_177x_8x.h"
#include "lpc_types.h"

#ifdef __cplusplus
extern "C"
{
#endif

/* Private Macros ------------------------------------------------------------- */
/** @defgroup TIM_Private_Macros Timer Private Macros
 * @{
 */

/* --------------------- BIT DEFINITIONS -------------------------------------- */
/**********************************************************************
** Interrupt information
**********************************************************************/
/** Macro to clean interrupt pending */
#define TIM_IR_CLR(n) _BIT(n)

/**********************************************************************
** Timer interrupt register definitions
**********************************************************************/
/** Macro for getting a timer match interrupt bit */
#define TIM_MATCH_INT(n)        (_BIT(n & 0x0F))
/** Macro for getting a capture event interrupt bit */
#define TIM_CAP_INT(n)     (_BIT(((n & 0x0F) + 4)))

/**********************************************************************
* Timer control register definitions
**********************************************************************/
/** Timer/counter enable bit */
#define TIM_ENABLE          ((uint32_t)(1<<0))
/** Timer/counter reset bit */
#define TIM_RESET           ((uint32_t)(1<<1))
/** Timer control bit mask */
#define TIM_TCR_MASKBIT     ((uint32_t)(3))

/**********************************************************************
* Timer match control register definitions
**********************************************************************/
/** Bit location for interrupt on MRx match, n = 0 to 3 */
#define TIM_INT_ON_MATCH(n)         (_BIT((n * 3)))
/** Bit location for reset on MRx match, n = 0 to 3 */
#define TIM_RESET_ON_MATCH(n)       (_BIT(((n * 3) + 1)))
/** Bit location for stop on MRx match, n = 0 to 3 */
#define TIM_STOP_ON_MATCH(n)        (_BIT(((n * 3) + 2)))
/** Timer Match control bit mask */
#define TIM_MCR_MASKBIT            ((uint32_t)(0x0FFF))
/** Timer Match control bit mask for specific channel*/
#define TIM_MCR_CHANNEL_MASKBIT(n)      ((uint32_t)(7<<(n*3)))

/**********************************************************************
* Timer capture control register definitions
**********************************************************************/
/** Bit location for CAP.n on CRx rising edge, n = 0 to 3 */
#define TIM_CAP_RISING(n)       (_BIT((n * 3)))
/** Bit location for CAP.n on CRx falling edge, n = 0 to 3 */
#define TIM_CAP_FALLING(n)      (_BIT(((n * 3) + 1)))
/** Bit location for CAP.n on CRx interrupt enable, n = 0 to 3 */
#define TIM_INT_ON_CAP(n)       (_BIT(((n * 3) + 2)))
/** Mask bit for rising and falling edge bit */
#define TIM_EDGE_MASK(n)        (_SBF((n * 3), 0x03))
/** Timer capture control bit mask */
#define TIM_CCR_MASKBIT         ((uint32_t)(0x3F))
/** Timer Capture control bit mask for specific channel*/
#define TIM_CCR_CHANNEL_MASKBIT(n)      ((uint32_t)(7<<(n*3)))

/**********************************************************************
* Timer external match register definitions
**********************************************************************/
/** Bit location for output state change of MAT.n when external match
   happens, n = 0 to 3 */
#define TIM_EM(n)               _BIT(n)
/** Output state change of MAT.n when external match happens: no change */
#define TIM_EM_NOTHING      ((uint8_t)(0x0))
/** Output state change of MAT.n when external match happens: low */
#define TIM_EM_LOW          ((uint8_t)(0x1))
/** Output state change of MAT.n when external match happens: high */
#define TIM_EM_HIGH         ((uint8_t)(0x2))
/** Output state change of MAT.n when external match happens: toggle */
#define TIM_EM_TOGGLE       ((uint8_t)(0x3))
/** Macro for setting for the MAT.n change state bits */
#define TIM_EM_SET(n,s)     (_SBF(((n << 1) + 4), (s & 0x03)))
/** Mask for the MAT.n change state bits */
#define TIM_EM_MASK(n)      (_SBF(((n << 1) + 4), 0x03))
/** Timer external match bit mask */
#define TIM_EMR_MASKBIT 0x0FFF

/**********************************************************************
* Timer Count Control Register definitions
**********************************************************************/
/** Mask to get the Counter/timer mode bits */
#define TIM_CTCR_MODE_MASK  0x3
/** Mask to get the count input select bits */
#define TIM_CTCR_INPUT_MASK 0xC
/** Timer Count control bit mask */
#define TIM_CTCR_MASKBIT    0xF
#define TIM_COUNTER_MODE ((uint8_t)(1))

/**
 * @}
 */


/* Public Types --------------------------------------------------------------- */
/** @defgroup TIM_Public_Types Timer Public Types
 * @{
 */

/***********************************************************************
 * Timer device enumeration
**********************************************************************/
/** @brief interrupt type */
typedef enum
{
    TIM_MR0_INT =0, /*!< interrupt for Match channel 0*/
    TIM_MR1_INT =1, /*!< interrupt for Match channel 1*/
    TIM_MR2_INT =2, /*!< interrupt for Match channel 2*/
    TIM_MR3_INT =3, /*!< interrupt for Match channel 3*/
    TIM_CR0_INT =4, /*!< interrupt for Capture channel 0*/
    TIM_CR1_INT =5, /*!< interrupt for Capture channel 1*/
}TIM_INT_TYPE;

/** @brief Timer/counter operating mode */
typedef enum
{
    TIM_TIMER_MODE = 0,             /*!< Timer mode */
    TIM_COUNTER_RISING_MODE,        /*!< Counter rising mode */
    TIM_COUNTER_FALLING_MODE,       /*!< Counter falling mode */
    TIM_COUNTER_ANY_MODE            /*!< Counter on both edges */
} TIM_MODE_OPT;

/** @brief Timer/Counter prescale option */
typedef enum
{
    TIM_PRESCALE_TICKVAL = 0,       /*!< Prescale in absolute value */
    TIM_PRESCALE_USVAL              /*!< Prescale in microsecond value */
} TIM_PRESCALE_OPT;

/** @brief Counter input option */
typedef enum
{
    TIM_COUNTER_INCAP0 = 0,         /*!< CAPn.0 input pin for TIMERn */
    TIM_COUNTER_INCAP1,             /*!< CAPn.1 input pin for TIMERn */
} TIM_COUNTER_INPUT_OPT;

/** @brief Timer/Counter external match option */
typedef enum
{
    TIM_EXTMATCH_NOTHING = 0,       /*!< Do nothing for external output pin if match */
    TIM_EXTMATCH_LOW,               /*!< Force external output pin to low if match */
    TIM_EXTMATCH_HIGH,              /*!< Force external output pin to high if match */
    TIM_EXTMATCH_TOGGLE             /*!< Toggle external output pin if match */
}TIM_EXTMATCH_OPT;

/** @brief Timer/counter capture mode options */
typedef enum {
    TIM_CAPTURE_NONE = 0,   /*!< No Capture */
    TIM_CAPTURE_RISING,     /*!< Rising capture mode */
    TIM_CAPTURE_FALLING,    /*!< Falling capture mode */
    TIM_CAPTURE_ANY         /*!< On both edges */
} TIM_CAP_MODE_OPT;

/** @brief Configuration structure in TIMER mode */
typedef struct
{

    uint8_t PrescaleOption;     /**< Timer Prescale option, should be:
                                    - TIM_PRESCALE_TICKVAL: Prescale in absolute value
                                    - TIM_PRESCALE_USVAL: Prescale in microsecond value
                                    */
    uint8_t Reserved[3];        /**< Reserved */
    uint32_t PrescaleValue;     /**< Prescale value */
} TIM_TIMERCFG_Type;

/** @brief Configuration structure in COUNTER mode */
typedef struct {

    uint8_t CounterOption;      /**< Counter Option, should be:
                                - TIM_COUNTER_INCAP0: CAPn.0 input pin for TIMERn
                                - TIM_COUNTER_INCAP1: CAPn.1 input pin for TIMERn
                                */
    uint8_t CountInputSelect;
    uint8_t Reserved[2];
} TIM_COUNTERCFG_Type;

/** @brief Match channel configuration structure */
typedef struct {
    uint8_t MatchChannel;   /**< Match channel, should be in range
                            from 0..3 */
    uint8_t IntOnMatch;     /**< Interrupt On match, should be:
                            - ENABLE: Enable this function.
                            - DISABLE: Disable this function.
                            */
    uint8_t StopOnMatch;    /**< Stop On match, should be:
                            - ENABLE: Enable this function.
                            - DISABLE: Disable this function.
                            */
    uint8_t ResetOnMatch;   /**< Reset On match, should be:
                            - ENABLE: Enable this function.
                            - DISABLE: Disable this function.
                            */

    uint8_t ExtMatchOutputType; /**< External Match Output type, should be:
                             -   TIM_EXTMATCH_NOTHING:  Do nothing for external output pin if match
                             -   TIM_EXTMATCH_LOW:  Force external output pin to low if match
                             -   TIM_EXTMATCH_HIGH: Force external output pin to high if match
                             -   TIM_EXTMATCH_TOGGLE: Toggle external output pin if match.
                            */
    uint8_t Reserved[3];    /** Reserved */
    uint32_t MatchValue;    /** Match value */
} TIM_MATCHCFG_Type;

/** @brief Capture Input configuration structure */
typedef struct {
    uint8_t CaptureChannel; /**< Capture channel, should be in range
                            from 0..1 */
    uint8_t RisingEdge;     /**< caption rising edge, should be:
                            - ENABLE: Enable rising edge.
                            - DISABLE: Disable this function.
                            */
    uint8_t FallingEdge;        /**< caption falling edge, should be:
                            - ENABLE: Enable falling edge.
                            - DISABLE: Disable this function.
                                */
    uint8_t IntOnCaption;   /**< Interrupt On caption, should be:
                            - ENABLE: Enable interrupt function.
                            - DISABLE: Disable this function.
                            */

} TIM_CAPTURECFG_Type;

/**
 * @}
 */


/* Public Functions ----------------------------------------------------------- */
/** @defgroup TIM_Public_Functions Timer Public Functions
 * @{
 */
/* Init/DeInit TIM functions -----------*/
void TIM_Init(LPC_TIM_TypeDef *TIMx, TIM_MODE_OPT TimerCounterMode, void *TIM_ConfigStruct);
void TIM_DeInit(LPC_TIM_TypeDef *TIMx);

/* TIM interrupt functions -------------*/
void TIM_ClearIntPending(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
void TIM_ClearIntCapturePending(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
FlagStatus TIM_GetIntStatus(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
FlagStatus TIM_GetIntCaptureStatus(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);

/* TIM configuration functions --------*/
void TIM_ConfigStructInit(TIM_MODE_OPT TimerCounterMode, void *TIM_ConfigStruct);
void TIM_ConfigMatch(LPC_TIM_TypeDef *TIMx, TIM_MATCHCFG_Type *TIM_MatchConfigStruct);
void TIM_UpdateMatchValue(LPC_TIM_TypeDef *TIMx,uint8_t MatchChannel, uint32_t MatchValue);
void TIM_ConfigCapture(LPC_TIM_TypeDef *TIMx, TIM_CAPTURECFG_Type *TIM_CaptureConfigStruct);
void TIM_Cmd(LPC_TIM_TypeDef *TIMx, FunctionalState NewState);

uint32_t TIM_GetCaptureValue(LPC_TIM_TypeDef *TIMx, TIM_COUNTER_INPUT_OPT CaptureChannel);
void TIM_ResetCounter(LPC_TIM_TypeDef *TIMx);

void TIM_Waitus(uint32_t time);
void TIM_Waitms(uint32_t time);

/**
 * @}
 */
#ifdef __cplusplus
}
#endif

#endif /* __LPC_TIMER_H_ */

/**
 * @}
 */

/* --------------------------------- End Of File ------------------------------ */