/**
* @brief Refresh the IWDG.
* @param hiwdg pointer to a IWDG_HandleTypeDef structure that contains
* the configuration information for the specified IWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
{
/* Reload IWDG counter with value defined in the reload register */
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initialize the IWDG according to the specified parameters in the
* IWDG_InitTypeDef and start watchdog. Before exiting function,
* watchdog is refreshed in order to have correct time base.
* @param hiwdg pointer to a IWDG_HandleTypeDef structure that contains
* the configuration information for the specified IWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
{
uint32_t tickstart;
/* Check the IWDG handle allocation */
if(hiwdg == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
assert_param(IS_IWDG_WINDOW(hiwdg->Init.Window));
/* Enable IWDG. LSI is turned on automaticaly */
__HAL_IWDG_START(hiwdg);
/* Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers by writing
0x5555 in KR */
IWDG_ENABLE_WRITE_ACCESS(hiwdg);
/* Write to IWDG registers the Prescaler & Reload values to work with */
hiwdg->Instance->PR = hiwdg->Init.Prescaler;
hiwdg->Instance->RLR = hiwdg->Init.Reload;
/* Check pending flag, if previous update not done, return timeout */
tickstart = HAL_GetTick();
/* Wait for register to be updated */
while(hiwdg->Instance->SR != RESET)
{
if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
{
return HAL_TIMEOUT;
}
}
/* If window parameter is different than current value, modify window
register */
if(hiwdg->Instance->WINR != hiwdg->Init.Window)
{
/* Write to IWDG WINR the IWDG_Window value to compare with. In any case,
even if window feature is disabled, Watchdog will be reloaded by writing
windows register */
hiwdg->Instance->WINR = hiwdg->Init.Window;
}
else
{
/* Reload IWDG counter with value defined in the reload register */
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
}
/* Return function status */
return HAL_OK;
}
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
MX_IWDG_Init();
for (;;) {
/* Fast blinking LED */
__HAL_IWDG_RELOAD_COUNTER(&hiwdg);
LED_Toggle();
HAL_Delay(70);
}
/* USER CODE END 6 */
}
/**
* @brief Start the IWDG.
* @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
* the configuration information for the specified IWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
{
uint32_t tickstart = 0;
/* Process locked */
__HAL_LOCK(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_BUSY;
/* Reload IWDG counter with value defined in the RLR register */
if ((hiwdg->Init.Window) == IWDG_WINDOW_DISABLE)
{
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
}
/* Start the IWDG peripheral */
__HAL_IWDG_START(hiwdg);
tickstart = HAL_GetTick();
/* Wait until PVU, RVU, WVU flag are RESET */
while( (__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
&&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
&&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET) )
{
if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
{
/* Set IWDG state */
hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
/* Process unlocked */
__HAL_UNLOCK(hiwdg);
return HAL_TIMEOUT;
}
}
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hiwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Initialize the IWDG according to the specified parameters in the
* IWDG_InitTypeDef and start watchdog. Before exiting function,
* watchdog is refreshed in order to have correct time base.
* @param hiwdg pointer to a IWDG_HandleTypeDef structure that contains
* the configuration information for the specified IWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
{
uint32_t tickstart;
/* Check the IWDG handle allocation */
if(hiwdg == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
/* Enable IWDG. LSI is turned on automaticaly */
__HAL_IWDG_START(hiwdg);
/* Enable write access to IWDG_PR, IWDG_RLR registers by writing
0x5555 in KR */
IWDG_ENABLE_WRITE_ACCESS(hiwdg);
/* Write to IWDG registers the Prescaler & Reload values to work with */
hiwdg->Instance->PR = hiwdg->Init.Prescaler;
hiwdg->Instance->RLR = hiwdg->Init.Reload;
/* Check pending flag, if previous update not done, return timeout */
tickstart = HAL_GetTick();
/* Wait for register to be updated */
while(hiwdg->Instance->SR != RESET)
{
if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
{
return HAL_TIMEOUT;
}
}
/* Reload IWDG counter with value defined in the reload register */
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Refresh the IWDG.
* @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
* the configuration information for the specified IWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
{
uint32_t tickstart = 0;
/* Process Locked */
__HAL_LOCK(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_BUSY;
tickstart = HAL_GetTick();
/* Wait until RVU flag is RESET */
while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
{
if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
{
/* Set IWDG state */
hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
/* Process unlocked */
__HAL_UNLOCK(hiwdg);
return HAL_TIMEOUT;
}
}
/* Reload IWDG counter with value defined in the reload register */
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hiwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Starts the IWDG.
* @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
* the configuration information for the specified IWDG module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
{
/* Process Locked */
__HAL_LOCK(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_BUSY;
/* Start the IWDG peripheral */
__HAL_IWDG_START(hiwdg);
/* Reload IWDG counter with value defined in the RLR register */
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hiwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Refreshes the IWDG.
* @param hiwdg: IWDG handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
{
/* Process Locked */
__HAL_LOCK(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_BUSY;
/* Clear the RVU flag */
__HAL_IWDG_CLEAR_FLAG(hiwdg, IWDG_FLAG_RVU);
/* Reload IWDG counter with value defined in the reload register */
__HAL_IWDG_RELOAD_COUNTER(hiwdg);
/* Change IWDG peripheral state */
hiwdg->State = HAL_IWDG_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hiwdg);
/* Return function status */
return HAL_OK;
}
