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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [ARM7_STR71x_IAR/] [Library/] [include/] [wdg.h] - Blame information for rev 583

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1 577 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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