wwdt_001.h

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/*
 * @brief Windowed Watchdog Timer Registers and functions
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * 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 __WWDT_001_H_
#define __WWDT_001_H_

#include "sys_config.h"
#include "cmsis.h"

#ifdef __cplusplus
extern "C" {
#endif

#if !defined(CHIP_LPC175X_6X) && !defined(CHIP_LPC11CXX) && !defined(CHIP_LPC1343)
#define WATCHDOG_WINDOW_SUPPORT
#endif

#if defined(CHIP_LPC11AXX) || defined(CHIP_LPC11EXX) || defined(CHIP_LPC11UXX) || defined(CHIP_LPC175X_6X) \
 || defined(CHIP_LPC1347)
#define WATCHDOG_CLKSEL_SUPPORT
#endif

typedef struct {    
 __IO uint32_t  MOD;   
 __IO uint32_t  TC;   
 __O  uint32_t  FEED;  
 __I  uint32_t  TV;   
#ifdef WATCHDOG_CLKSEL_SUPPORT
 __IO uint32_t CLKSEL;  
#else
 __I  uint32_t  RESERVED0;
#endif
#ifdef WATCHDOG_WINDOW_SUPPORT
 __IO uint32_t  WARNINT;  
 __IO uint32_t  WINDOW;  
#endif
} IP_WWDT_001_T;

#define WWDT_WDMOD_BITMASK          ((uint32_t) 0x1F)

#define WWDT_WDMOD_WDEN             ((uint32_t) (1 << 0))

#define WWDT_WDMOD_WDRESET          ((uint32_t) (1 << 1))

#define WWDT_WDMOD_WDTOF            ((uint32_t) (1 << 2))

#define WWDT_WDMOD_WDINT            ((uint32_t) (1 << 3))
#if !defined(CHIP_LPC175X_6X)

#define WWDT_WDMOD_WDPROTECT        ((uint32_t) (1 << 4))
#endif
#if defined(WATCHDOG_CLKSEL_SUPPORT)

#define WWDT_CLKSEL_BITMASK         ((uint32_t) 0x10000003)

#define WWDT_CLKSEL_SOURCE(n)       ((uint32_t) (n & 0x03))

#define WWDT_CLKSEL_LOCK            ((uint32_t) (1 << 31))
#endif /* defined(WATCHDOG_CLKSEL_SUPPORT) */

void IP_WWDT_Init(IP_WWDT_001_T *pWWDT);

STATIC INLINE void IP_WWDT_DeInit(IP_WWDT_001_T *pWWDT)
{}

STATIC INLINE void IP_WWDT_SetTimeOut(IP_WWDT_001_T *pWWDT, uint32_t timeout)
{
 pWWDT->TC = timeout;
}

#if defined(WATCHDOG_CLKSEL_SUPPORT)

STATIC INLINE void IP_WWDT_SelClockSource(IP_WWDT_001_T *pWWDT, uint32_t src)
{
 pWWDT->CLKSEL = src & WWDT_CLKSEL_BITMASK;
}

#endif /*WATCHDOG_CLKSEL_SUPPORT*/

STATIC INLINE void IP_WWDT_Feed(IP_WWDT_001_T *pWWDT)
{
 pWWDT->FEED = 0xAA;
 pWWDT->FEED = 0x55;
}

#if defined(WATCHDOG_WINDOW_SUPPORT)

STATIC INLINE void IP_WWDT_SetWarning(IP_WWDT_001_T *pWWDT, uint32_t timeout)
{
 pWWDT->WARNINT = timeout;
}

STATIC INLINE void IP_WWDT_SetWindow(IP_WWDT_001_T *pWWDT, uint32_t timeout)
{
 pWWDT->WINDOW = timeout;
}

#endif /* defined(WATCHDOG_WINDOW_SUPPORT) */

STATIC INLINE void IP_WWDT_SetOption(IP_WWDT_001_T *pWWDT, uint32_t options)
{
 pWWDT->MOD |= options;
}

STATIC INLINE void IP_WWDT_UnsetOption(IP_WWDT_001_T *pWWDT, uint32_t options)
{
 pWWDT->MOD &= (~options) & WWDT_WDMOD_BITMASK;
}

STATIC INLINE void IP_WWDT_Start(IP_WWDT_001_T *pWWDT)
{
 IP_WWDT_SetOption(pWWDT, WWDT_WDMOD_WDEN);
 IP_WWDT_Feed(pWWDT);
}

STATIC INLINE uint32_t IP_WWDT_GetStatus(IP_WWDT_001_T *pWWDT)
{
 return pWWDT->MOD;
}

void IP_WWDT_ClearStatusFlag(IP_WWDT_001_T *pWWDT, uint32_t status);

STATIC INLINE uint32_t IP_WWDT_GetCurrentCount(IP_WWDT_001_T *pWWDT)
{
 return pWWDT->TV;
}

#ifdef __cplusplus
}
#endif

#endif /* __WWDT_001_H_ */