lpc177x_8x_wwdt.h

优龙LPC1788开发板资料

/***********************************************************************//**
 * @file		lpc177x_8x_wwdt.c
 * @brief		Contains all macro definitions and function prototypes
 * 				support for WDT firmware library on LPC177x_8x
 * @version		1.0
 * @date		13. Dec. 2010
 * @author		NXP MCU SW Application Team
 **************************************************************************
 * 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.
 **************************************************************************/

#ifndef LPC178X_WWDT_H_
#define LPC178X_WWDT_H_

/* Includes ------------------------------------------------------------------- */
#include "LPC177x_8x.h"
#include "lpc_types.h"


#ifdef __cplusplus
extern "C"
{
#endif

// time is calculated by usec
#define WDT_GET_FROM_USEC(time)		(time/((WWDT_US_INDEX * 4)/WDT_OSC))
#define WDT_GET_USEC(counter)		(counter * ((WWDT_US_INDEX * 4)/WDT_OSC))


/* --------------------- BIT DEFINITIONS -------------------------------------- */
/** WWDT interrupt enable bit */
#define WWDT_WDMOD_WDEN			    ((uint32_t)(1<<0))
/** WWDT interrupt enable bit */
#define WWDT_WDMOD_WDRESET			((uint32_t)(1<<1))
/** WWDT time out flag bit */
#define WWDT_WDMOD_WDTOF			((uint32_t)(1<<2))
/** WDT Time Out flag bit */
#define WWDT_WDMOD_WDINT			((uint32_t)(1<<3))
/** WWDT Protect flag bit */
#define WWDT_WDMOD_WDPROTECT		((uint32_t)(1<<4))

/** Define divider index for microsecond ( us ) */
#define WWDT_US_INDEX		((uint32_t)(1000000))

/** WWDT Time out minimum value */
#define WWDT_TIMEOUT_MIN	((uint32_t)(0xFF))
/** WWDT Time out maximum value */
#define WWDT_TIMEOUT_MAX	((uint32_t)(0x00FFFFFF))

/** WWDT Warning minimum value */
#define WWDT_WARNINT_MIN	((uint32_t)(0xFF))
/** WWDT Warning maximum value */
#define WWDT_WARNINT_MAX	((uint32_t)(0x000003FF))

/** WWDT Windowed minimum value */
#define WWDT_WINDOW_MIN		((uint32_t)(0xFF))
/** WWDT Windowed minimum value */
#define WWDT_WINDOW_MAX		((uint32_t)(0x00FFFFFF))

/** WWDT timer constant register mask */
#define WWDT_WDTC_MASK			((uint32_t)(0x00FFFFFF))
/** WWDT warning value register mask */
#define WWDT_WDWARNINT_MASK		((uint32_t)(0x000003FF))
/** WWDT feed sequence register mask */
#define WWDT_WDFEED_MASK 		((uint32_t)(0x000000FF))

/** WWDT flag */
#define WWDT_WARNINT_FLAG		((uint8_t)(0))
#define WWDT_TIMEOUT_FLAG		((uint8_t)(1))

/** WWDT mode definitions */
#define WWDT_PROTECT_MODE		((uint8_t)(0))
#define WWDT_RESET_MODE			((uint8_t)(1))


/* WWDT Timer value definition (us) */
#define WWDT_TIMEOUT_USEC_MIN			((uint32_t)(WDT_GET_USEC(WWDT_TIMEOUT_MIN)))//microseconds
#define WWDT_TIMEOUT_USEC_MAX			((uint32_t)(WDT_GET_USEC(WWDT_TIMEOUT_MAX)))

#define WWDT_TIMEWARN_USEC_MIN			((uint32_t)(WDT_GET_USEC(WWDT_WARNINT_MIN)))
#define WWDT_TIMEWARN_USEC_MAX			((uint32_t)(WDT_GET_USEC(WWDT_WARNINT_MAX)))

#define WWDT_TIMEWINDOWED_USEC_MIN		((uint32_t)(WDT_GET_USEC(WWDT_WINDOW_MIN)))
#define WWDT_TIMEWINDOWED_USEC_MAX		((uint32_t)(WDT_GET_USEC(WWDT_WINDOW_MAX)))


/**
 * @}
 */

typedef struct Wdt_Config
{
	uint8_t wdtEnable;//if ENABLE -> the enable bit is enabled
	uint8_t wdtReset;//if ENABLE -> the Reset bit is enabled
	uint8_t wdtProtect;//if ENABLE -> the Protect bit is enabled
	uint32_t wdtTmrConst;//Set the constant value to timeout the WDT
	uint32_t wdtWarningVal;//Set the value to warn the WDT with interrupt
	uint32_t wdtWindowVal;//Set a window vaule for WDT
}st_Wdt_Config;


/* Public Functions ----------------------------------------------------------- */
/** @defgroup WDT_Public_Functions WDT Public Functions
 * @{
 */

uint8_t WWDT_Init(uint32_t TimeOut);
uint8_t WWDT_Start(uint32_t TimeOut);
void WWDT_SetMode(uint8_t mode, FunctionalState NewState);
void WWDT_SetTimerConstant(uint32_t constVal);
void WWDT_Enable(FunctionalState NewState);
void WWDT_Cmd(FunctionalState NewState);
uint8_t WWDT_SetWarningRaw(uint32_t warnVal);
uint8_t WWDT_SetWarning(uint32_t WarnTime);
uint8_t WWDT_SetWindowRaw(uint32_t wndVal);
uint8_t WWDT_SetWindow(uint32_t WindowedTime);
void WWDT_UpdateTimeOut(uint32_t TimeOut);
FlagStatus WWDT_GetStatus (uint8_t Status);
void WWDT_ClearStatusFlag (uint8_t flag);
void WWDT_ClrTimeOutFlag (void);
void WWDT_FeedStdSeq (void);
void WWDT_Feed (void);
uint32_t WWDT_GetCurrentCount(void);


#ifdef __cplusplus
}
#endif

#endif /* LPC178X_WWDT_H_ */


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