322 lines
13 KiB
C
322 lines
13 KiB
C
/**********************************************************************
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* $Id$ lpc_timer.h 2011-06-02
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*//**
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* @file lpc_timer.h
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* @brief Contains all macro definitions and function prototypes
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* support for Timer firmware library on LPC
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* @version 1.0
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* @date 02. June. 2011
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2011, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors'
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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**********************************************************************/
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/* Peripheral group ----------------------------------------------------------- */
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/** @defgroup TIMER TIM (Timer)
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* @ingroup LPC_CMSIS_FwLib_Drivers
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* @{
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*/
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#ifndef __LPC_TIMER_H_
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#define __LPC_TIMER_H_
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/* Includes ------------------------------------------------------------------- */
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#include "LPC407x_8x_177x_8x.h"
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#include "lpc_types.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Private Macros ------------------------------------------------------------- */
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/** @defgroup TIM_Private_Macros Timer Private Macros
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* @{
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*/
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/* --------------------- BIT DEFINITIONS -------------------------------------- */
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/**********************************************************************
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** Interrupt information
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**********************************************************************/
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/** Macro to clean interrupt pending */
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#define TIM_IR_CLR(n) _BIT(n)
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/**********************************************************************
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** Timer interrupt register definitions
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**********************************************************************/
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/** Macro for getting a timer match interrupt bit */
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#define TIM_MATCH_INT(n) (_BIT(n & 0x0F))
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/** Macro for getting a capture event interrupt bit */
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#define TIM_CAP_INT(n) (_BIT(((n & 0x0F) + 4)))
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/**********************************************************************
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* Timer control register definitions
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**********************************************************************/
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/** Timer/counter enable bit */
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#define TIM_ENABLE ((uint32_t)(1<<0))
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/** Timer/counter reset bit */
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#define TIM_RESET ((uint32_t)(1<<1))
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/** Timer control bit mask */
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#define TIM_TCR_MASKBIT ((uint32_t)(3))
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/**********************************************************************
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* Timer match control register definitions
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**********************************************************************/
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/** Bit location for interrupt on MRx match, n = 0 to 3 */
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#define TIM_INT_ON_MATCH(n) (_BIT((n * 3)))
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/** Bit location for reset on MRx match, n = 0 to 3 */
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#define TIM_RESET_ON_MATCH(n) (_BIT(((n * 3) + 1)))
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/** Bit location for stop on MRx match, n = 0 to 3 */
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#define TIM_STOP_ON_MATCH(n) (_BIT(((n * 3) + 2)))
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/** Timer Match control bit mask */
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#define TIM_MCR_MASKBIT ((uint32_t)(0x0FFF))
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/** Timer Match control bit mask for specific channel*/
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#define TIM_MCR_CHANNEL_MASKBIT(n) ((uint32_t)(7<<(n*3)))
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/**********************************************************************
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* Timer capture control register definitions
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**********************************************************************/
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/** Bit location for CAP.n on CRx rising edge, n = 0 to 3 */
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#define TIM_CAP_RISING(n) (_BIT((n * 3)))
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/** Bit location for CAP.n on CRx falling edge, n = 0 to 3 */
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#define TIM_CAP_FALLING(n) (_BIT(((n * 3) + 1)))
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/** Bit location for CAP.n on CRx interrupt enable, n = 0 to 3 */
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#define TIM_INT_ON_CAP(n) (_BIT(((n * 3) + 2)))
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/** Mask bit for rising and falling edge bit */
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#define TIM_EDGE_MASK(n) (_SBF((n * 3), 0x03))
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/** Timer capture control bit mask */
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#define TIM_CCR_MASKBIT ((uint32_t)(0x3F))
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/** Timer Capture control bit mask for specific channel*/
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#define TIM_CCR_CHANNEL_MASKBIT(n) ((uint32_t)(7<<(n*3)))
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/**********************************************************************
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* Timer external match register definitions
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**********************************************************************/
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/** Bit location for output state change of MAT.n when external match
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happens, n = 0 to 3 */
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#define TIM_EM(n) _BIT(n)
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/** Output state change of MAT.n when external match happens: no change */
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#define TIM_EM_NOTHING ((uint8_t)(0x0))
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/** Output state change of MAT.n when external match happens: low */
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#define TIM_EM_LOW ((uint8_t)(0x1))
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/** Output state change of MAT.n when external match happens: high */
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#define TIM_EM_HIGH ((uint8_t)(0x2))
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/** Output state change of MAT.n when external match happens: toggle */
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#define TIM_EM_TOGGLE ((uint8_t)(0x3))
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/** Macro for setting for the MAT.n change state bits */
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#define TIM_EM_SET(n,s) (_SBF(((n << 1) + 4), (s & 0x03)))
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/** Mask for the MAT.n change state bits */
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#define TIM_EM_MASK(n) (_SBF(((n << 1) + 4), 0x03))
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/** Timer external match bit mask */
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#define TIM_EMR_MASKBIT 0x0FFF
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/**********************************************************************
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* Timer Count Control Register definitions
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**********************************************************************/
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/** Mask to get the Counter/timer mode bits */
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#define TIM_CTCR_MODE_MASK 0x3
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/** Mask to get the count input select bits */
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#define TIM_CTCR_INPUT_MASK 0xC
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/** Timer Count control bit mask */
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#define TIM_CTCR_MASKBIT 0xF
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#define TIM_COUNTER_MODE ((uint8_t)(1))
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/**
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* @}
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*/
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/* Public Types --------------------------------------------------------------- */
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/** @defgroup TIM_Public_Types Timer Public Types
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* @{
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*/
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/***********************************************************************
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* Timer device enumeration
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**********************************************************************/
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/** @brief interrupt type */
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typedef enum
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{
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TIM_MR0_INT =0, /*!< interrupt for Match channel 0*/
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TIM_MR1_INT =1, /*!< interrupt for Match channel 1*/
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TIM_MR2_INT =2, /*!< interrupt for Match channel 2*/
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TIM_MR3_INT =3, /*!< interrupt for Match channel 3*/
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TIM_CR0_INT =4, /*!< interrupt for Capture channel 0*/
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TIM_CR1_INT =5, /*!< interrupt for Capture channel 1*/
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}TIM_INT_TYPE;
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/** @brief Timer/counter operating mode */
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typedef enum
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{
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TIM_TIMER_MODE = 0, /*!< Timer mode */
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TIM_COUNTER_RISING_MODE, /*!< Counter rising mode */
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TIM_COUNTER_FALLING_MODE, /*!< Counter falling mode */
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TIM_COUNTER_ANY_MODE /*!< Counter on both edges */
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} TIM_MODE_OPT;
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/** @brief Timer/Counter prescale option */
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typedef enum
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{
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TIM_PRESCALE_TICKVAL = 0, /*!< Prescale in absolute value */
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TIM_PRESCALE_USVAL /*!< Prescale in microsecond value */
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} TIM_PRESCALE_OPT;
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/** @brief Counter input option */
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typedef enum
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{
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TIM_COUNTER_INCAP0 = 0, /*!< CAPn.0 input pin for TIMERn */
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TIM_COUNTER_INCAP1, /*!< CAPn.1 input pin for TIMERn */
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} TIM_COUNTER_INPUT_OPT;
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/** @brief Timer/Counter external match option */
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typedef enum
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{
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TIM_EXTMATCH_NOTHING = 0, /*!< Do nothing for external output pin if match */
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TIM_EXTMATCH_LOW, /*!< Force external output pin to low if match */
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TIM_EXTMATCH_HIGH, /*!< Force external output pin to high if match */
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TIM_EXTMATCH_TOGGLE /*!< Toggle external output pin if match */
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}TIM_EXTMATCH_OPT;
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/** @brief Timer/counter capture mode options */
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typedef enum {
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TIM_CAPTURE_NONE = 0, /*!< No Capture */
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TIM_CAPTURE_RISING, /*!< Rising capture mode */
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TIM_CAPTURE_FALLING, /*!< Falling capture mode */
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TIM_CAPTURE_ANY /*!< On both edges */
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} TIM_CAP_MODE_OPT;
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/** @brief Configuration structure in TIMER mode */
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typedef struct
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{
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uint8_t PrescaleOption; /**< Timer Prescale option, should be:
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- TIM_PRESCALE_TICKVAL: Prescale in absolute value
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- TIM_PRESCALE_USVAL: Prescale in microsecond value
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*/
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uint8_t Reserved[3]; /**< Reserved */
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uint32_t PrescaleValue; /**< Prescale value */
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} TIM_TIMERCFG_Type;
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/** @brief Configuration structure in COUNTER mode */
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typedef struct {
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uint8_t CounterOption; /**< Counter Option, should be:
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- TIM_COUNTER_INCAP0: CAPn.0 input pin for TIMERn
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- TIM_COUNTER_INCAP1: CAPn.1 input pin for TIMERn
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*/
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uint8_t CountInputSelect;
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uint8_t Reserved[2];
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} TIM_COUNTERCFG_Type;
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/** @brief Match channel configuration structure */
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typedef struct {
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uint8_t MatchChannel; /**< Match channel, should be in range
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from 0..3 */
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uint8_t IntOnMatch; /**< Interrupt On match, should be:
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- ENABLE: Enable this function.
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- DISABLE: Disable this function.
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*/
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uint8_t StopOnMatch; /**< Stop On match, should be:
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- ENABLE: Enable this function.
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- DISABLE: Disable this function.
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*/
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uint8_t ResetOnMatch; /**< Reset On match, should be:
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- ENABLE: Enable this function.
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- DISABLE: Disable this function.
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*/
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uint8_t ExtMatchOutputType; /**< External Match Output type, should be:
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- TIM_EXTMATCH_NOTHING: Do nothing for external output pin if match
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- TIM_EXTMATCH_LOW: Force external output pin to low if match
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- TIM_EXTMATCH_HIGH: Force external output pin to high if match
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- TIM_EXTMATCH_TOGGLE: Toggle external output pin if match.
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*/
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uint8_t Reserved[3]; /** Reserved */
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uint32_t MatchValue; /** Match value */
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} TIM_MATCHCFG_Type;
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/** @brief Capture Input configuration structure */
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typedef struct {
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uint8_t CaptureChannel; /**< Capture channel, should be in range
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from 0..1 */
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uint8_t RisingEdge; /**< caption rising edge, should be:
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- ENABLE: Enable rising edge.
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- DISABLE: Disable this function.
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*/
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uint8_t FallingEdge; /**< caption falling edge, should be:
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- ENABLE: Enable falling edge.
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- DISABLE: Disable this function.
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*/
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uint8_t IntOnCaption; /**< Interrupt On caption, should be:
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- ENABLE: Enable interrupt function.
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- DISABLE: Disable this function.
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*/
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} TIM_CAPTURECFG_Type;
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/**
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* @}
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*/
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/* Public Functions ----------------------------------------------------------- */
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/** @defgroup TIM_Public_Functions Timer Public Functions
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* @{
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*/
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/* Init/DeInit TIM functions -----------*/
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void TIM_Init(LPC_TIM_TypeDef *TIMx, TIM_MODE_OPT TimerCounterMode, void *TIM_ConfigStruct);
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void TIM_DeInit(LPC_TIM_TypeDef *TIMx);
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/* TIM interrupt functions -------------*/
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void TIM_ClearIntPending(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
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void TIM_ClearIntCapturePending(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
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FlagStatus TIM_GetIntStatus(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
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FlagStatus TIM_GetIntCaptureStatus(LPC_TIM_TypeDef *TIMx, TIM_INT_TYPE IntFlag);
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/* TIM configuration functions --------*/
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void TIM_ConfigStructInit(TIM_MODE_OPT TimerCounterMode, void *TIM_ConfigStruct);
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void TIM_ConfigMatch(LPC_TIM_TypeDef *TIMx, TIM_MATCHCFG_Type *TIM_MatchConfigStruct);
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void TIM_UpdateMatchValue(LPC_TIM_TypeDef *TIMx,uint8_t MatchChannel, uint32_t MatchValue);
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void TIM_ConfigCapture(LPC_TIM_TypeDef *TIMx, TIM_CAPTURECFG_Type *TIM_CaptureConfigStruct);
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void TIM_Cmd(LPC_TIM_TypeDef *TIMx, FunctionalState NewState);
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uint32_t TIM_GetCaptureValue(LPC_TIM_TypeDef *TIMx, TIM_COUNTER_INPUT_OPT CaptureChannel);
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void TIM_ResetCounter(LPC_TIM_TypeDef *TIMx);
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void TIM_Waitus(uint32_t time);
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void TIM_Waitms(uint32_t time);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* __LPC_TIMER_H_ */
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/**
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* @}
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*/
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/* --------------------------------- End Of File ------------------------------ */
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