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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [ARM7_STR71x_IAR/] [Library/] [include/] [wdg.h] - Rev 583
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/******************** (C) COPYRIGHT 2003 STMicroelectronics ******************** * File Name : wdg.h * Author : MCD Application Team * Date First Issued : 25/08/2003 * Description : This file contains all the functions prototypes for the * WDG software library. ******************************************************************************** * History: * 30/11/2004 : V2.0 * 14/07/2004 : V1.3 * 01/01/2004 : V1.2 ******************************************************************************* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. *******************************************************************************/ #ifndef __WDG_H #define __WDG_H #include "71x_map.h" #include "rccu.h" /******************************************************************************* * Function Name : WDG_Enable * Description : Enable the Watchdog Mode * Input : None * Return : None *******************************************************************************/ inline void WDG_Enable ( void ) { WDG->CR |= 0x01; } /******************************************************************************* * Function Name : WDG_CntRefresh * Description : Refresh and update the WDG counter to avoid a system reset. * Input : None * Return : None *******************************************************************************/ inline void WDG_CntRefresh ( void ) { //write the first value in the key register WDG->KR = 0xA55A; //write the consecutive value WDG->KR = 0x5AA5; } /******************************************************************************* * Function Name : WDG_PrescalerConfig * Description : Set the counter prescaler value. * Divide the counter clock by (Prescaler + 1) * Input : Prescaler data value (8 bit) * Return : None *******************************************************************************/ inline void WDG_PrescalerConfig ( u8 Prescaler ) { WDG->PR = Prescaler; } /******************************************************************************* * Function Name : WDG_CntReloadUpdate * Description : Update the counter pre-load value. * Input : Pre-load data value (16 bit) * Return : None *******************************************************************************/ inline void WDG_CntReloadUpdate ( u16 PreLoadValue ) { WDG->VR = PreLoadValue; } /******************************************************************************* * Function Name : WDG_PeriodValueConfig * Description : Set the prescaler and counter reload value based on the * time needed * Input : Amount of time (us) needed, peripheral clock2 value * Return : None *******************************************************************************/ void WDG_PeriodValueConfig ( u32 Time ); /******************************************************************************* * Function Name : WDG_CntOnOffConfig * Description : Start or stop the free auto-reload timer to countdown. * Input : ENABLE or DISABLE * Return : None *******************************************************************************/ inline void WDG_CntOnOffConfig ( FunctionalState NewState ) { if (NewState == ENABLE) WDG->CR |= 0x0002; else WDG->CR &= ~0x0002; } /******************************************************************************* * Function Name : WDG_ECITConfig * Description : Enable or Disable the end of count interrupt * Input : ENABLE or DISABLE * Return : None *******************************************************************************/ inline void WDG_ECITConfig (FunctionalState NewState) { if (NewState == ENABLE) WDG->MR |= 0x0001; else WDG->MR &= ~0x0001; } /******************************************************************************* * Function Name : WDG_ECFlagClear * Description : Clear the end of count flag * Input : None * Return : None *******************************************************************************/ inline void WDG_ECFlagClear ( void ) { WDG->SR = 0x0000; } /******************************************************************************* * Function Name : WDG_ECStatus * Description : Return the end of count status * Input : None * Return : NewState value *******************************************************************************/ inline u16 WDG_ECStatus ( void ) { return WDG->SR; } #endif // __WDG_H /******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/
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