96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
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******************************************************************************
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*
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* @file watchdog.c
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* @brief watchdog module
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*
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*
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* @version 1.0
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* @date 2022/08/04 15:00:40
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* @author Alex Xu
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*
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* Copyright (c) 2013-2099,Tkplusemi Technology Co.,Ltd.
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* All Rights Reserved
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*
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* History:
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* Revision Date Author Desc
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* 1.0.0 2022/08/04 Alex build this file
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******************************************************************************/
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/*_____ I N C L U D E S ____________________________________________________*/
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#include "watchdog.h"
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#if 0
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/*_____ D E F I N I T I O N S ______________________________________________*/
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/******************************************************************************\
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Macro definitions
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\******************************************************************************/
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/******************************************************************************\
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Variables definitions
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\******************************************************************************/
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/******************************************************************************\
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Functions definitions
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\******************************************************************************/
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/*_____ F U N C T I O N S __________________________________________________*/
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/*
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*******************************************************************************
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* void Watchdog_Init(uint8_t watchdog_time)
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*
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* Description : watchdog Initialization. WDT_TM = 0，则看门狗时钟为系统时钟的12分频，否则为系统时钟。
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wdtrel.7=1 则看门狗计数器时钟为Sys_Fre/12*32，wdtrel.7=0 则看门狗计数器时钟为Sys_Fre/12*2.
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Sys_Fre = 12MHz，wdtrel.7=0时，定时器范围：
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(1/Sys_Fre)*12*2*256~(1/Sys_Fre)*12*2*256*128 = 5ms~65ms
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Sys_Fre = 12MHz，wdtrel.7=1时，定时器范围：
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(1/Sys_Fre)*12*32*256~(1/Sys_Fre)*12*32*256*128 = 80ms~1s
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*
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* Arguments :
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* Returns :
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* Notes :
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*
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*******************************************************************************
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*/
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void Watchdog_Init(uint8_t watchdog_time)
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{
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switch(watchdog_time)
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{
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case _WDT_TIME_65ms_:
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WDTREL = 0x00; //WDTPS = 0,wdt_f = wdt_f1/2;WDTPS = 1,wdt_f = wdt_f1/32;
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break;
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case _WDT_TIME_1s_:
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WDTREL = 0x80; //WDTPS = 0,wdt_f = wdt_f1/2;WDTPS = 1,wdt_f = wdt_f1/32;
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break;
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}
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SWDT = 1; //Watchdog Start
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}
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/*
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*******************************************************************************
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* void Watchdog_Clear(void)
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*
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* Description : Feed watchdog 在系统初始化时未进行看门狗初始化，则不能在程序中进行喂狗操作！！！
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*
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* Arguments :
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* Returns :
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* Notes :
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*
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*******************************************************************************
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*/
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void Watchdog_Clear(void)
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{
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WDT = 1;
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SWDT = 1;
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}
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#endif
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