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jeremybenn |
/******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
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* File Name : wdg.h
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* Author : MCD Application Team
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* Date First Issued : 25/08/2003
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* Description : This file contains all the functions prototypes for the
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* WDG software library.
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********************************************************************************
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* History:
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* 30/11/2004 : V2.0
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* 14/07/2004 : V1.3
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* 01/01/2004 : V1.2
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*******************************************************************************
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THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
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CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
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AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
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OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
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CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*******************************************************************************/
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#ifndef __WDG_H
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#define __WDG_H
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#include "71x_map.h"
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#include "rccu.h"
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/*******************************************************************************
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* Function Name : WDG_Enable
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* Description : Enable the Watchdog Mode
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* Input : None
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* Return : None
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*******************************************************************************/
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inline void WDG_Enable ( void )
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{
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WDG->CR |= 0x01;
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}
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/*******************************************************************************
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* Function Name : WDG_CntRefresh
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* Description : Refresh and update the WDG counter to avoid a system reset.
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* Input : None
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* Return : None
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*******************************************************************************/
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inline void WDG_CntRefresh ( void )
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{
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//write the first value in the key register
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WDG->KR = 0xA55A;
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//write the consecutive value
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WDG->KR = 0x5AA5;
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}
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/*******************************************************************************
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* Function Name : WDG_PrescalerConfig
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* Description : Set the counter prescaler value.
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* Divide the counter clock by (Prescaler + 1)
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* Input : Prescaler data value (8 bit)
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* Return : None
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*******************************************************************************/
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inline void WDG_PrescalerConfig ( u8 Prescaler )
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{
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WDG->PR = Prescaler;
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}
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/*******************************************************************************
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* Function Name : WDG_CntReloadUpdate
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* Description : Update the counter pre-load value.
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* Input : Pre-load data value (16 bit)
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* Return : None
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*******************************************************************************/
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inline void WDG_CntReloadUpdate ( u16 PreLoadValue )
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{
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WDG->VR = PreLoadValue;
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}
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/*******************************************************************************
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* Function Name : WDG_PeriodValueConfig
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* Description : Set the prescaler and counter reload value based on the
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* time needed
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* Input : Amount of time (us) needed, peripheral clock2 value
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* Return : None
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*******************************************************************************/
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void WDG_PeriodValueConfig ( u32 Time );
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/*******************************************************************************
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* Function Name : WDG_CntOnOffConfig
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* Description : Start or stop the free auto-reload timer to countdown.
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* Input : ENABLE or DISABLE
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* Return : None
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*******************************************************************************/
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inline void WDG_CntOnOffConfig ( FunctionalState NewState )
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{
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if (NewState == ENABLE) WDG->CR |= 0x0002; else WDG->CR &= ~0x0002;
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}
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/*******************************************************************************
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* Function Name : WDG_ECITConfig
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* Description : Enable or Disable the end of count interrupt
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* Input : ENABLE or DISABLE
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* Return : None
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*******************************************************************************/
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inline void WDG_ECITConfig (FunctionalState NewState)
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{
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if (NewState == ENABLE) WDG->MR |= 0x0001; else WDG->MR &= ~0x0001;
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}
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/*******************************************************************************
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* Function Name : WDG_ECFlagClear
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* Description : Clear the end of count flag
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* Input : None
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* Return : None
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*******************************************************************************/
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inline void WDG_ECFlagClear ( void )
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{
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WDG->SR = 0x0000;
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}
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/*******************************************************************************
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* Function Name : WDG_ECStatus
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* Description : Return the end of count status
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* Input : None
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* Return : NewState value
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*******************************************************************************/
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inline u16 WDG_ECStatus ( void )
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{
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return WDG->SR;
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}
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#endif // __WDG_H
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/******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/
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