/**********************************************************************
* $Id$      lpc_pwm.h           2011-06-02
*//**
* @file     lpc_pwm.h
* @brief    Contains all macro definitions and function prototypes
*           support for PWM 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 PWM PWM (Pulse Width Modulator)
 * @ingroup LPC_CMSIS_FwLib_Drivers
 * @{
 */

#ifndef __LPC_PWM_H_
#define __LPC_PWM_H_

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


#ifdef __cplusplus
extern "C"
{
#endif


/* Private Macros ------------------------------------------------------------- */
/** @defgroup PWM_Private_Macros PWM Private Macros
 * @{
 */

/* --------------------- BIT DEFINITIONS -------------------------------------- */
/**********************************************************************
* IR register definitions
**********************************************************************/
/** Interrupt flag for PWM match channel for 6 channel */
#define PWM_IR_PWMMRn(n)        ((uint32_t)((n<4)?(1<<n):(1<<(n+4))))

/** Interrupt flag for capture input */
#define PWM_IR_PWMCAPn(n)       ((uint32_t)(1<<(n+4)))

/**  IR register mask */
#define PWM_IR_BITMASK          ((uint32_t)(0x0000073F))

/**********************************************************************
* TCR register definitions
**********************************************************************/
/** TCR register mask */
#define PWM_TCR_BITMASK             ((uint32_t)(0x0000000B))

/** PWM Counter Enable */
#define PWM_TCR_COUNTER_ENABLE      ((uint32_t)(1<<0))

/** PWM Counter Reset */
#define PWM_TCR_COUNTER_RESET       ((uint32_t)(1<<1))

/** PWM Enable */
#define PWM_TCR_PWM_ENABLE          ((uint32_t)(1<<3))

/**********************************************************************
* CTCR register definitions
**********************************************************************/
/** CTCR register mask */
#define PWM_CTCR_BITMASK            ((uint32_t)(0x0000000F))

/** PWM Counter-Timer Mode */
#define PWM_CTCR_MODE(n)            ((uint32_t)(n&0x03))

/** PWM Capture input select */
#define PWM_CTCR_SELECT_INPUT(n)    ((uint32_t)((n&0x03)<<2))

/**********************************************************************
* MCR register definitions
**********************************************************************/
/** MCR register mask */
#define PWM_MCR_BITMASK             ((uint32_t)(0x001FFFFF))

/** generate a PWM interrupt when a MATCHn occurs */
#define PWM_MCR_INT_ON_MATCH(n)     ((uint32_t)(1<<(((n&0x7)<<1)+(n&0x07))))

/** reset the PWM when a MATCHn occurs */
#define PWM_MCR_RESET_ON_MATCH(n)   ((uint32_t)(1<<(((n&0x7)<<1)+(n&0x07)+1)))

/** stop the PWM when a MATCHn occurs */
#define PWM_MCR_STOP_ON_MATCH(n)    ((uint32_t)(1<<(((n&0x7)<<1)+(n&0x07)+2)))

/**********************************************************************
* CCR register definitions
**********************************************************************/
/** CCR register mask */
#define PWM_CCR_BITMASK             ((uint32_t)(0x0000003F))

/** PCAPn is rising edge sensitive */
#define PWM_CCR_CAP_RISING(n)       ((uint32_t)(1<<(((n&0x2)<<1)+(n&0x1))))

/** PCAPn is falling edge sensitive */
#define PWM_CCR_CAP_FALLING(n)      ((uint32_t)(1<<(((n&0x2)<<1)+(n&0x1)+1)))

/** PWM interrupt is generated on a PCAP event */
#define PWM_CCR_INT_ON_CAP(n)       ((uint32_t)(1<<(((n&0x2)<<1)+(n&0x1)+2)))

/**********************************************************************
* PCR register definitions
**********************************************************************/
/** PCR register mask */
#define PWM_PCR_BITMASK         (uint32_t)0x00007E7C

/** PWM output n is a single edge controlled output */
#define PWM_PCR_PWMSELn(n)      ((uint32_t)(((n&0x7)<2) ? 0 : (1<<n)))

/** enable PWM output n */
#define PWM_PCR_PWMENAn(n)      ((uint32_t)(((n&0x7)<1) ? 0 : (1<<(n+8))))

/**********************************************************************
* LER register definitions
**********************************************************************/
/** LER register mask*/
#define PWM_LER_BITMASK             ((uint32_t)(0x0000007F))

/** PWM MATCHn register update control */
#define PWM_LER_EN_MATCHn_LATCH(n)   ((uint32_t)((n<7) ? (1<<n) : 0))

/**
 * @}
 */


/* Public Types --------------------------------------------------------------- */
/** @defgroup PWM_Public_Types PWM Public Types
 * @{
 */

typedef enum
{
    PWM_0 = 0,
    PWM_1 = 1
} en_PWM_unitId;


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

    uint8_t PrescaleOption;     /**< Prescale option, should be:
                                - PWM_TIMER_PRESCALE_TICKVAL: Prescale in absolute value
                                - PWM_TIMER_PRESCALE_USVAL: Prescale in microsecond value
                                */
    uint8_t Reserved[3];
    uint32_t PrescaleValue;     /**< Prescale value, 32-bit long, should be matched
                                with PrescaleOption
                                */
} PWM_TIMERCFG_Type;

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

    uint8_t CounterOption;      /**< Counter Option, should be:
                                - PWM_COUNTER_RISING: Rising Edge
                                - PWM_COUNTER_FALLING: Falling Edge
                                - PWM_COUNTER_ANY: Both rising and falling mode
                                */
    uint8_t CountInputSelect;   /**< Counter input select, should be:
                                - PWM_COUNTER_PCAP1_0: PWM Counter input selected is PCAP1.0 pin
                                - PWM_COUNTER_PCAP1_1: PWM Counter input selected is PCAP1.1 pin
                                */
    uint8_t Reserved[2];
} PWM_COUNTERCFG_Type;

/** @brief PWM Match channel configuration structure */
typedef struct 
{
    uint8_t MatchChannel;   /**< Match channel, should be in range
                            from 0..6 */
    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.
                            */
} PWM_MATCHCFG_Type;


/** @brief PWM 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.
                            */
} PWM_CAPTURECFG_Type;

/* Timer/Counter in PWM configuration type definition -----------------------------------*/

/** @brief PMW TC mode select option */
typedef enum 
{
    PWM_MODE_TIMER = 0,     /*!< PWM using Timer mode */
    PWM_MODE_COUNTER,       /*!< PWM using Counter mode */
} PWM_TC_MODE_OPT;

#define PARAM_PWM_TC_MODE(n) ((n==PWM_MODE_TIMER) || (n==PWM_MODE_COUNTER))


/** @brief PWM Timer/Counter prescale option */
typedef enum
{
    PWM_TIMER_PRESCALE_TICKVAL = 0,         /*!< Prescale in absolute value */
    PWM_TIMER_PRESCALE_USVAL                /*!< Prescale in microsecond value */
} PWM_TIMER_PRESCALE_OPT;

#define PARAM_PWM_TIMER_PRESCALE(n) ((n==PWM_TIMER_PRESCALE_TICKVAL) || (n==PWM_TIMER_PRESCALE_USVAL))


/** @brief PWM Input Select in counter mode */
typedef enum 
{
    PWM_COUNTER_PCAP1_0 = 0,        /*!< PWM Counter input selected is PCAP1.0 pin */
    PWM_COUNTER_PCAP1_1         /*!< PWM counter input selected is CAP1.1 pin */
} PWM_COUNTER_INPUTSEL_OPT;

#define PARAM_PWM_COUNTER_INPUTSEL(n) ((n==PWM_COUNTER_PCAP1_0) || (n==PWM_COUNTER_PCAP1_1))

/** @brief PWM Input Edge Option in counter mode */
typedef enum 
{
    PWM_COUNTER_RISING = 1,     /*!< Rising edge mode */
    PWM_COUNTER_FALLING = 2,    /*!< Falling edge mode */
    PWM_COUNTER_ANY = 3         /*!< Both rising and falling mode */
} PWM_COUNTER_EDGE_OPT;

#define PARAM_PWM_COUNTER_EDGE(n)   ((n==PWM_COUNTER_RISING) || (n==PWM_COUNTER_FALLING) \
                                            || (n==PWM_COUNTER_ANY))


/* PWM configuration type definition ----------------------------------------------------- */
/** @brief PWM operating mode options */
typedef enum 
{
    PWM_CHANNEL_SINGLE_EDGE,    /*!< PWM Channel Single edge mode */
    PWM_CHANNEL_DUAL_EDGE       /*!< PWM Channel Dual edge mode */
} PWM_CHANNEL_EDGE_OPT;

#define PARAM_PWM_CHANNEL_EDGE(n)   ((n==PWM_CHANNEL_SINGLE_EDGE) || (n==PWM_CHANNEL_DUAL_EDGE))


/** @brief PWM update type */
typedef enum 
{
    PWM_MATCH_UPDATE_NOW = 0,           /**< PWM Match Channel Update Now */
    PWM_MATCH_UPDATE_NEXT_RST           /**< PWM Match Channel Update on next
                                            PWM Counter resetting */
} PWM_MATCH_UPDATE_OPT;

#define PARAM_PWM_MATCH_UPDATE(n)   ((n==PWM_MATCH_UPDATE_NOW) || (n==PWM_MATCH_UPDATE_NEXT_RST))


/** @brief PWM interrupt status type definition ----------------------------------------------------- */
/** @brief PWM Interrupt status type */
typedef enum
{
    PWM_INTSTAT_MR0 = PWM_IR_PWMMRn(0),     /**< Interrupt flag for PWM match channel 0 */
    PWM_INTSTAT_MR1 = PWM_IR_PWMMRn(1),     /**< Interrupt flag for PWM match channel 1 */
    PWM_INTSTAT_MR2 = PWM_IR_PWMMRn(2),     /**< Interrupt flag for PWM match channel 2 */
    PWM_INTSTAT_MR3 = PWM_IR_PWMMRn(3),     /**< Interrupt flag for PWM match channel 3 */
    PWM_INTSTAT_CAP0 = PWM_IR_PWMCAPn(0),   /**< Interrupt flag for capture input 0 */
    PWM_INTSTAT_CAP1 = PWM_IR_PWMCAPn(1),   /**< Interrupt flag for capture input 1 */
    PWM_INTSTAT_MR4 = PWM_IR_PWMMRn(4),     /**< Interrupt flag for PWM match channel 4 */
    PWM_INTSTAT_MR6 = PWM_IR_PWMMRn(5),     /**< Interrupt flag for PWM match channel 5 */
    PWM_INTSTAT_MR5 = PWM_IR_PWMMRn(6),     /**< Interrupt flag for PWM match channel 6 */
}PWM_INTSTAT_TYPE;


/**
 * @}
 */


/* Public Functions ----------------------------------------------------------- */
/** @defgroup PWM_Public_Functions PWM Public Functions
 * @{
 */

void PWM_PinConfig(uint8_t pwmId, uint8_t PWM_Channel, uint8_t PinselOption);
IntStatus PWM_GetIntStatus(uint8_t pwmId, uint32_t IntFlag);
void PWM_ClearIntPending(uint8_t pwmId, uint32_t IntFlag);
void PWM_ConfigStructInit(uint8_t PWMTimerCounterMode, void *PWM_InitStruct);
void PWM_Init(uint8_t pwmId, uint32_t PWMTimerCounterMode, void *PWM_ConfigStruct);
void PWM_DeInit (uint8_t pwmId);
void PWM_Cmd(uint8_t pwmId, FunctionalState NewState);
void PWM_CounterCmd(uint8_t pwmId, FunctionalState NewState);
void PWM_ResetCounter(uint8_t pwmId);
void PWM_ConfigMatch(uint8_t pwmId, PWM_MATCHCFG_Type *PWM_MatchConfigStruct);
void PWM_ConfigCapture(uint8_t pwmId, PWM_CAPTURECFG_Type *PWM_CaptureConfigStruct);
uint32_t PWM_GetCaptureValue(uint8_t pwmId, uint8_t CaptureChannel);
void PWM_MatchUpdate(uint8_t pwmId, uint8_t MatchChannel, \
                                    uint32_t MatchValue, uint8_t UpdateType);
void PWM_ChannelConfig(uint8_t pwmId, uint8_t PWMChannel, uint8_t ModeOption);
void PWM_ChannelCmd(uint8_t pwmId, uint8_t PWMChannel, FunctionalState NewState);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* __LPC_PWM_H_ */

/**
 * @}
 */

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