/**
* @brief Initialize the WWDG according to the specified.
* parameters in the WWDG_InitTypeDef of associated handle.
* @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
* the configuration information for the specified WWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
{
/* Check the WWDG handle allocation */
if(hwwdg == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
assert_param(IS_WWDG_EWI_MODE(hwwdg->Init.EWIMode));
/* Init the low level hardware */
HAL_WWDG_MspInit(hwwdg);
/* Set WWDG Counter */
WRITE_REG(hwwdg->Instance->CR, (WWDG_CR_WDGA | hwwdg->Init.Counter));
/* Set WWDG Prescaler and Window */
WRITE_REG(hwwdg->Instance->CFR, (hwwdg->Init.EWIMode | hwwdg->Init.Prescaler | hwwdg->Init.Window));
/* Return function status */
return HAL_OK;
}
/**
* @brief Initializes the WWDG according to the specified
* parameters in the WWDG_InitTypeDef and creates the associated handle.
* @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
* the configuration information for the specified WWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
{
/* Check the WWDG handle allocation */
if(hwwdg == HAL_NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
if(hwwdg->State == HAL_WWDG_STATE_RESET)
{
/* Init the low level hardware */
HAL_WWDG_MspInit(hwwdg);
}
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* Set WWDG Prescaler and Window */
MODIFY_REG(hwwdg->Instance->CFR, (WWDG_CFR_WDGTB | WWDG_CFR_W), (hwwdg->Init.Prescaler | hwwdg->Init.Window));
/* Set WWDG Counter */
MODIFY_REG(hwwdg->Instance->CR, WWDG_CR_T, hwwdg->Init.Counter);
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @简述 设置 WWDG 计数器值.
* @参数 Counter: 指定看门狗计数器值.
* 该参数取值必须在0x40与0x7F之间.
* @返回 没有
*/
void WWDG_SetCounter(uint8_t Counter)
{
/* 检查参数 */
assert_param(IS_WWDG_COUNTER(Counter));
/* 为配置计数器的值写 T[6:0]位，除了写0到WDG A位没有意义 */
WWDG->CR = Counter & BIT_Mask;
}
/*******************************************************************************
* Function Name : WWDG_Enable
* Description : Enables WWDG and load the counter value.
* - Counter: specifies the watchdog counter value.
* This parameter must be a number between 0x40 and 0x7F.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void WWDG_Enable(u8 Counter)
{
/* Check the parameters */
assert(IS_WWDG_COUNTER(Counter));
WWDG->CR = CR_WDGA_Set | Counter;
}
/**
* @brief Sets the WWDG counter value.
* @param Counter: specifies the watchdog counter value.
* This parameter must be a number between 0x40 and 0x7F.
* @retval : None
*/
void WWDG_SetCounter (uint8_t Counter)
{
/* Check the parameters */
assert_param (IS_WWDG_COUNTER (Counter));
/* Write to T[6:0] bits to configure the counter value, no need to do a read-modify-write; writing a 0 to WDGA bit does nothing */
WWDG->CR = Counter & BIT_Mask;
}
/**
* @brief Initializes the WWDG according to the specified
* parameters in the WWDG_InitTypeDef and creates the associated handle.
* @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
* the configuration information for the specified WWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
{
uint32_t tmp = 0;
/* Check the WWDG handle allocation */
if(hwwdg == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
if(hwwdg->State == HAL_WWDG_STATE_RESET)
{
/* Init the low level hardware */
HAL_WWDG_MspInit(hwwdg);
}
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* Set WWDG Prescaler and Window */
/* Get the CFR register value */
tmp = hwwdg->Instance->CFR;
/* Clear WDGTB[1:0] and W[6:0] bits */
tmp &= ((uint32_t)~(WWDG_CFR_WDGTB | WWDG_CFR_W));
/* Prepare the WWDG Prescaler and Window parameters */
tmp |= hwwdg->Init.Prescaler | hwwdg->Init.Window;
/* Write to WWDG CFR */
hwwdg->Instance->CFR = tmp;
/* Set WWDG Counter */
/* Get the CR register value */
tmp = hwwdg->Instance->CR;
/* Clear T[6:0] bits */
tmp &= (uint32_t)~((uint32_t)WWDG_CR_T);
/* Prepare the WWDG Counter parameter */
tmp |= (hwwdg->Init.Counter);
/* Write to WWDG CR */
hwwdg->Instance->CR = tmp;
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_READY;
/* Return function status */
return HAL_OK;
}
/**
* @brief Refreshes the WWDG.
* @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
* the configuration information for the specified WWDG module.
* @param Counter: value of counter to put in WWDG counter
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg, uint32_t Counter)
{
/* Check the parameters */
assert_param(IS_WWDG_COUNTER(Counter));
/* Write to WWDG CR the WWDG Counter value to refresh with */
MODIFY_REG(hwwdg->Instance->CR, (uint32_t)WWDG_CR_T, Counter);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initializes the WWDG according to the specified
* parameters in the WWDG_InitTypeDef and creates the associated handle.
* @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
* the configuration information for the specified WWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
{
/* Check the WWDG handle allocation */
if(hwwdg == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
if(hwwdg->State == HAL_WWDG_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hwwdg->Lock = HAL_UNLOCKED;
/* Init the low level hardware */
HAL_WWDG_MspInit(hwwdg);
}
/* Take lock and change peripheral state */
__HAL_LOCK(hwwdg);
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* Set WWDG Prescaler and Window and Counter*/
MODIFY_REG(hwwdg->Instance->CFR, (WWDG_CFR_WDGTB | WWDG_CFR_W), (hwwdg->Init.Prescaler | hwwdg->Init.Window));
MODIFY_REG(hwwdg->Instance->CR, WWDG_CR_T, hwwdg->Init.Counter);
/* Change peripheral state and release lock*/
hwwdg->State = HAL_WWDG_STATE_READY;
__HAL_UNLOCK(hwwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Refreshes the WWDG.
* @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
* the configuration information for the specified WWDG module.
* @param Counter: value of counter to put in WWDG counter
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg, uint32_t Counter)
{
/* Process Locked */
__HAL_LOCK(hwwdg);
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* Check the parameters */
assert_param(IS_WWDG_COUNTER(Counter));
/* Write to WWDG CR the WWDG Counter value to refresh with */
MODIFY_REG(hwwdg->Instance->CR, (uint32_t)WWDG_CR_T, Counter);
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hwwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Enables WWDG and load the counter value.
* @param Counter: specifies the watchdog counter value.
* This parameter must be a number between 0x40 and 0x7F (to prevent
* generating an immediate reset).
* @retval None
*/
void WWDG_Enable(uint8_t Counter)
{
/* Check the parameters */
assert_param(IS_WWDG_COUNTER(Counter));
WWDG->CR = WWDG_CR_WDGA | Counter;
}
/**
* @简述 使能 WWDG 和载入计数器的值.
* @参数 Counter: 指定看门狗载入计数器的值.
* 这个参数必须是0x40到0x7F之间的一个数.
* @返回 没有
*/
void WWDG_Enable(uint8_t Counter)
{
/* 检查参数 */
assert_param(IS_WWDG_COUNTER(Counter));
WWDG->CR = CR_WDGA_Set | Counter;
}
/**
* @brief WWDG_Enable - Enables WWDG and load the counter value.
* @param Counter: specifies the watchdog counter value.
* This parameter must be a number between 0x00 and 0x7F.
* @retval None
*/
void WWDG_Enable(uint32_t Counter)
{
/* Check the parameters */
assert_param(IS_WWDG_COUNTER(Counter));
MDR_WWDG->CR = WDGA_Mask | Counter;
}
