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/***********************************************************************//**
* @file lpc17xx_wdt.h
* @brief Contains all macro definitions and function prototypes
* support for WDT firmware library on LPC17xx
* @version 2.0
* @date 21. May. 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.
**************************************************************************/
/* Peripheral group ----------------------------------------------------------- */
/** @defgroup WDT WDT
* @ingroup LPC1700CMSIS_FwLib_Drivers
* @{
*/
#ifndef LPC17XX_WDT_H_
#define LPC17XX_WDT_H_
/* Includes ------------------------------------------------------------------- */
#include "LPC17xx.h"
#include "lpc_types.h"
#ifdef __cplusplus
extern "C"
{
#endif
/* Private Macros ------------------------------------------------------------- */
/** @defgroup WDT_Private_Macros WDT Private Macros
* @{
*/
/* --------------------- BIT DEFINITIONS -------------------------------------- */
/** WDT interrupt enable bit */
#define WDT_WDMOD_WDEN ((uint32_t)(1<<0))
/** WDT interrupt enable bit */
#define WDT_WDMOD_WDRESET ((uint32_t)(1<<1))
/** WDT time out flag bit */
#define WDT_WDMOD_WDTOF ((uint32_t)(1<<2))
/** WDT Time Out flag bit */
#define WDT_WDMOD_WDINT ((uint32_t)(1<<3))
/** WDT Mode */
#define WDT_WDMOD(n) ((uint32_t)(1<<1))
/** Define divider index for microsecond ( us ) */
#define WDT_US_INDEX ((uint32_t)(1000000))
/** WDT Time out minimum value */
#define WDT_TIMEOUT_MIN ((uint32_t)(0xFF))
/** WDT Time out maximum value */
#define WDT_TIMEOUT_MAX ((uint32_t)(0xFFFFFFFF))
/** Watchdog mode register mask */
#define WDT_WDMOD_MASK (uint8_t)(0x02)
/** Watchdog timer constant register mask */
#define WDT_WDTC_MASK (uint8_t)(0xFFFFFFFF)
/** Watchdog feed sequence register mask */
#define WDT_WDFEED_MASK (uint8_t)(0x000000FF)
/** Watchdog timer value register mask */
#define WDT_WDCLKSEL_MASK (uint8_t)(0x03)
/** Clock selected from internal RC */
#define WDT_WDCLKSEL_RC (uint8_t)(0x00)
/** Clock selected from PCLK */
#define WDT_WDCLKSEL_PCLK (uint8_t)(0x01)
/** Clock selected from external RTC */
#define WDT_WDCLKSEL_RTC (uint8_t)(0x02)
/* ---------------- CHECK PARAMETER DEFINITIONS ---------------------------- */
/* Macro check clock source selection */
#define PARAM_WDT_CLK_OPT(OPTION) ((OPTION ==WDT_CLKSRC_IRC)||(OPTION ==WDT_CLKSRC_IRC)\
||(OPTION ==WDT_CLKSRC_IRC))
/* Macro check WDT mode */
#define PARAM_WDT_MODE_OPT(OPTION) ((OPTION ==WDT_MODE_INT_ONLY)||(OPTION ==WDT_MODE_RESET))
/**
* @}
*/
/* Public Types --------------------------------------------------------------- */
/** @defgroup WDT_Public_Types WDT Public Types
* @{
*/
/** @brief Clock source option for WDT */
typedef enum {
WDT_CLKSRC_IRC = 0, /*!< Clock source from Internal RC oscillator */
WDT_CLKSRC_PCLK = 1, /*!< Selects the APB peripheral clock (PCLK) */
WDT_CLKSRC_RTC = 2 /*!< Selects the RTC oscillator */
} WDT_CLK_OPT;
/** @brief WDT operation mode */
typedef enum {
WDT_MODE_INT_ONLY = 0, /*!< Use WDT to generate interrupt only */
WDT_MODE_RESET = 1 /*!< Use WDT to generate interrupt and reset MCU */
} WDT_MODE_OPT;
/**
* @}
*/
/* Public Functions ----------------------------------------------------------- */
/** @defgroup WDT_Public_Functions WDT Public Functions
* @{
*/
void WDT_Init (WDT_CLK_OPT ClkSrc, WDT_MODE_OPT WDTMode);
void WDT_Start(uint32_t TimeOut);
void WDT_Feed (void);
void WDT_UpdateTimeOut ( uint32_t TimeOut);
FlagStatus WDT_ReadTimeOutFlag (void);
void WDT_ClrTimeOutFlag (void);
uint32_t WDT_GetCurrentCount(void);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* LPC17XX_WDT_H_ */
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */
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