266 lines
6.3 KiB
C
266 lines
6.3 KiB
C
/****************************************************************************!
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* 技术讨论：QQ群 123763203
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* 官网 ：www.navota.com
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*
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* @file wdg.c
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* @brief wdg定时器函数库
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* @author Navota
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* @date 2018-3-1
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*******************************************************************************/
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#include "common.h"
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#include "wdog.h"
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/******************************************************************************
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*******************************************************************************/
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/*****************************************************************************//*!
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*
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* @brief 禁用看门狗定时器
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_Disable(void)
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{
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uint8_t u8Cs1 = WDOG->CS1;
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uint8_t u8Cs2 = WDOG->CS2;
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uint16_t u16TOVAL = WDOG->TOVAL;
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uint16_t u16WIN = WDOG->WIN;
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u8Cs1 &= ~WDOG_CS1_EN_MASK;
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/* 首先要解锁unlock看门狗，才可以往寄存器写数据 */
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WDOG_Unlock();
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WDOG->CS2 = u8Cs2;
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WDOG->TOVAL = u16TOVAL;
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WDOG->WIN = u16WIN;
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WDOG->CS1 = u8Cs1;
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}
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/*****************************************************************************//*!
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*
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* @brief 禁用看门狗但允许其重新配置.
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*
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_DisableWDOGEnableUpdate(void)
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{
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uint8_t u8Cs1 = WDOG->CS1;
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uint8_t u8Cs2 = WDOG->CS2;
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uint16_t u16TOVAL = WDOG->TOVAL;
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uint16_t u16WIN = WDOG->WIN;
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u8Cs1 &= ~WDOG_CS1_EN_MASK;
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u8Cs1 |= WDOG_CS1_UPDATE_MASK;
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WDOG_Unlock(); //Modify
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WDOG->CS2 = u8Cs2;
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WDOG->TOVAL = u16TOVAL;
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WDOG->WIN = u16WIN;
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WDOG->CS1 = u8Cs1;
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}
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/*****************************************************************************//*!
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*
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* @brief 使能看门狗定时器.
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_Enable(void)
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{
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uint8_t u8Cs1 = WDOG->CS1;
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u8Cs1 |= WDOG_CS1_EN_MASK;
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/* 首先要解锁unlock看门狗，才可以往寄存器写数据 */
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WDOG_Unlock();
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WDOG->CS1 = u8Cs1;
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}
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/*****************************************************************************//*!
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*
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* @brief 初始化看门狗.
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*
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* @param[in] pConfig 配置看门狗的结构体.
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*
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* @return none
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*
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* @warning make sure that WDOG is not initialized after reset or WDOG update is enabled
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* after reset by calling WDOG_EnableUpdate / WDOG_DisableWDOGEnableUpdate.
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*
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* @see WDOG_EnableUpdate, WDOG_DisableWDOGEnableUpdate
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*
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*************************************************************************/
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void WDOG_Init(WDOG_ConfigPtr pConfig)
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{
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uint8_t u8Cs1;
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uint8_t u8Cs2;
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uint16_t u16Toval;
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uint16_t u16Win;
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u8Cs1 = 0x80; /* CS1寄存器的默认值 */
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u8Cs2 = 0;
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u16Toval = pConfig->u16ETMeOut;
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u16Win = pConfig->u16WinETMe;
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if(pConfig->sBits.bDisable)
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{
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u8Cs1 &= ~WDOG_CS1_EN_MASK;
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}
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if(pConfig->sBits.bIntEnable)
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{
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u8Cs1 |= WDOG_CS1_INT_MASK;
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}
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if(pConfig->sBits.bStopEnable)
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{
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u8Cs1 |= WDOG_CS1_STOP_MASK;
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}
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if(pConfig->sBits.bDbgEnable)
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{
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u8Cs1 |= WDOG_CS1_DBG_MASK;
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}
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if(pConfig->sBits.bWaitEnable)
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{
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u8Cs1 |= WDOG_CS1_WAIT_MASK;
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}
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if(pConfig->sBits.bUpdateEnable)
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{
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u8Cs1 |= WDOG_CS1_UPDATE_MASK;
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}
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if(pConfig->sBits.bWinEnable)
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{
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u8Cs2 |= WDOG_CS2_WIN_MASK;
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}
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if(pConfig->sBits.bPrescaler)
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{
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u8Cs2 |= WDOG_CS2_PRES_MASK;
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}
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u8Cs2 |= (pConfig->sBits.bClkSrc & 0x03);
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/* 首先要解锁unlock看门狗，才可以往寄存器写数据 */
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WDOG_Unlock();
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WDOG->CS2 = u8Cs2;
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WDOG->TOVAL8B.TOVALL = u16Toval;
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WDOG->TOVAL8B.TOVALH = u16Toval >> 8;
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WDOG->WIN8B.WINL = u16Win;
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WDOG->WIN8B.WINH = u16Win >> 8;
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WDOG->CS1 = u8Cs1;
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}
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/*****************************************************************************//*!
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*
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* @brief 复位看门狗.
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_DeInit(void)
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{
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WDOG_Unlock();
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WDOG->CS2 = WDOG_CS2_DEFAULT_VALUE;
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WDOG->TOVAL = WDOG_TOVAL_DEFAULT_VALUE;
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WDOG->WIN = WDOG_WIN_DEFAULT_VALUE;
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WDOG->CS1 = WDOG_CS1_DEFAULT_VALUE;
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}
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/*****************************************************************************//*!
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*
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* @brief 喂狗-刷新看门狗.
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_Feed(void)
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{
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//在喂狗期间，总中断需要关闭
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DisableInterrupts;
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WDOG->CNT = 0x02A6;//喂狗的两条指令，必须跟随在128个总线时钟周期内执行
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WDOG->CNT = 0x80B4;
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EnableInterrupts;
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}
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/*****************************************************************************//*!
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*
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* @brief 使能更新看门狗.
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_EnableUpdate(void)
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{
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uint8_t u8Cs1 = WDOG->CS1;
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uint8_t u8Cs2 = WDOG->CS2;
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uint16_t u16TOVAL = WDOG->TOVAL;
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uint16_t u16WIN = WDOG->WIN;
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u8Cs1 |= WDOG_CS1_UPDATE_MASK;
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/* 首先要解锁unlock看门狗，才可以往寄存器写数据 */
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WDOG_Unlock();
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WDOG->CS2 = u8Cs2;
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WDOG->TOVAL = u16TOVAL;
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WDOG->WIN = u16WIN;
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WDOG->CS1 = u8Cs1;
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}
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/*****************************************************************************//*!
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*
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* @brief 禁用更新看门狗.
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*
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* @param none
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*
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* @return none
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*
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*****************************************************************************/
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void WDOG_DisableUpdate(void)
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{
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uint8_t u8Cs1 = WDOG->CS1;
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uint8_t u8Cs2 = WDOG->CS2;
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uint16_t u16TOVAL = WDOG->TOVAL;
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uint16_t u16WIN = WDOG->WIN;
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u8Cs1 &= ~WDOG_CS1_UPDATE_MASK;
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/* 首先要解锁unlock看门狗，才可以往寄存器写数据 */
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WDOG_Unlock();
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WDOG->CS2 = u8Cs2;
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WDOG->TOVAL = u16TOVAL;
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WDOG->WIN = u16WIN;
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WDOG->CS1 = u8Cs1;
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}
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/********************************************************************/
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/*! @} */
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