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/***********************************************************************//**
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* @file : lpc17xx_wdt.h
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* @brief : Contains all macro definitions and function prototypes
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* support for WDT firmware library on LPC17xx
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* @version : 1.0
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* @date : 9. April. 2009
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* @author : HieuNguyen
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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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**************************************************************************/
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/* Peripheral group ----------------------------------------------------------- */
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/** @defgroup WDT
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* @ingroup LPC1700CMSIS_FwLib_Drivers
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* @{
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*/
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#ifndef LPC17XX_WDT_H_
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#define LPC17XX_WDT_H_
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/* Includes ------------------------------------------------------------------- */
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#include "LPC17xx.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 WDT_Private_Macros
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* @{
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*/
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/** @defgroup WDT_REGISTER_BIT_DEFINITIONS
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* @{
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*/
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/************************** WDT Control **************************/
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/** WDT interrupt enable bit */
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#define WDT_WDMOD_WDEN ((uint32_t)(1<<0))
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/** WDT interrupt enable bit */
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#define WDT_WDMOD_WDRESET ((uint32_t)(1<<1))
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/** WDT time out flag bit */
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#define WDT_WDMOD_WDTOF ((uint32_t)(1<<2))
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/** WDT Time Out flag bit */
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#define WDT_WDMOD_WDINT ((uint32_t)(1<<3))
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/** WDT Mode */
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#define WDT_WDMOD(n) ((uint32_t)(1<<1))
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/**************************** PRIVATE TYPES ***************************/
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/** Define divider index for microsecond ( us ) */
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#define WDT_US_INDEX ((uint32_t)(1000000))
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/** WDT Time out minimum value */
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#define WDT_TIMEOUT_MIN ((uint32_t)(0xFF))
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/** WDT Time out maximum value */
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#define WDT_TIMEOUT_MAX ((uint32_t)(0xFFFFFFFF))
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/**************************** GLOBAL/PUBLIC TYPES ***************************/
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/** Watchdog mode register mask */
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#define WDT_WDMOD_MASK (uint8_t)(0x02)
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/** Watchdog timer constant register mask */
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#define WDT_WDTC_MASK (uint8_t)(0xFFFFFFFF)
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/** Watchdog feed sequence register mask */
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#define WDT_WDFEED_MASK (uint8_t)(0x000000FF)
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/** Watchdog timer value register mask */
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#define WDT_WDCLKSEL_MASK (uint8_t)(0x03)
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/** Clock selected from internal RC */
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#define WDT_WDCLKSEL_RC (uint8_t)(0x00)
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/** Clock selected from PCLK */
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#define WDT_WDCLKSEL_PCLK (uint8_t)(0x01)
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/** Clock selected from external RTC */
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#define WDT_WDCLKSEL_RTC (uint8_t)(0x02)
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/**
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* @}
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*/
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/**
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* @}
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*/
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/* Public Types --------------------------------------------------------------- */
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/** @defgroup WDT_Public_Types
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* @{
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*/
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/** @brief Clock source option for WDT */
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typedef enum {
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WDT_CLKSRC_IRC = 0, /*!< Clock source from Internal RC oscillator */
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WDT_CLKSRC_PCLK = 1, /*!< Selects the APB peripheral clock (PCLK) */
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WDT_CLKSRC_RTC = 2 /*!< Selects the RTC oscillator */
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} WDT_CLK_OPT;
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#define PARAM_WDT_CLK_OPT(OPTION) ((OPTION ==WDT_CLKSRC_IRC)||(OPTION ==WDT_CLKSRC_IRC)\
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||(OPTION ==WDT_CLKSRC_IRC))
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/** @brief WDT operation mode */
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typedef enum {
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WDT_MODE_INT_ONLY = 0, /*!< Use WDT to generate interrupt only */
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WDT_MODE_RESET = 1 /*!< Use WDT to generate interrupt and reset MCU */
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} WDT_MODE_OPT;
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#define PARAM_WDT_MODE_OPT(OPTION) ((OPTION ==WDT_MODE_INT_ONLY)||(OPTION ==WDT_MODE_RESET))
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/**
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* @}
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*/
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/* Public Functions ----------------------------------------------------------- */
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/** @defgroup WDT_Public_Functions
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* @{
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*/
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void WDT_Init (uint32_t ClkSrc, uint32_t WDTMode);
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void WDT_Start(uint32_t TimeOut);
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void WDT_Feed (void);
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FlagStatus WDT_ReadTimeOutFlag (void);
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void WDT_ClrTimeOutFlag (void);
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void WDT_UpdateTimeOut ( uint32_t TimeOut);
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uint32_t WDT_GetCurrentCount(void);
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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 /* LPC17XX_WDT_H_ */
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/**
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* @}
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*/
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/* --------------------------------- End Of File ------------------------------ */
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