/**
* @brief DeInitializes the WWDG peripheral.
* @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_DeInit(WWDG_HandleTypeDef *hwwdg)
{
/* Check the parameters */
assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* DeInit the low level hardware */
HAL_WWDG_MspDeInit(hwwdg);
/* Reset WWDG Control register */
hwwdg->Instance->CR = (uint32_t)0x0000007F;
/* Reset WWDG Configuration register */
hwwdg->Instance->CFR = (uint32_t)0x0000007F;
/* Reset WWDG Status register */
hwwdg->Instance->SR = 0;
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hwwdg);
/* Return function status */
return HAL_OK;
}
/**
* @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;
}
/**
* @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 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 DeInitializes the WWDG peripheral.
* @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_DeInit(WWDG_HandleTypeDef *hwwdg)
{
/* Check the parameters */
assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
/* Take lock and change peripheral state */
__HAL_LOCK(hwwdg);
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* DeInit the low level hardware */
HAL_WWDG_MspDeInit(hwwdg);
/* Reset WWDG Control, configuration and status register */
MODIFY_REG(hwwdg->Instance->CR, (WWDG_CR_T | WWDG_CR_WDGA),0x0000007F);
MODIFY_REG(hwwdg->Instance->CFR, (WWDG_CFR_WDGTB | WWDG_CFR_W | WWDG_CFR_EWI),0x0000007F);
MODIFY_REG(hwwdg->Instance->SR,WWDG_SR_EWIF,0x0);
/* Change peripheral state and release lock*/
hwwdg->State = HAL_WWDG_STATE_RESET;
__HAL_UNLOCK(hwwdg);
/* Return function status */
return HAL_OK;
}