Posted on January 26, 2016 at 14:30Hello there,
I was trying to activate WWDG using STM32CubeF2 v1.1.1 and got problems when trying to use HAL_WWDG_Start_IT. The handle was kept in lock state.
Comparing with HAL_WWDG_Start I miss a call to __HAL_UNLOCK(hwwdg);
Please have a look at the code sample. Am I missing somthing, or is realy the unlock call missing in the library.
Best regards
Andreas
/**
* @brief Starts the WWDG.
* @param hwwdg: WWDG handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Start(WWDG_HandleTypeDef *hwwdg)
{
/* Process Locked */
__HAL_LOCK(hwwdg);
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* Enable the peripheral */
__HAL_WWDG_ENABLE(hwwdg);
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hwwdg);
/* Return function status */
return HAL_OK;
}
/**
* @brief Starts the WWDG with interrupt enabled.
* @param hwwdg: WWDG handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_WWDG_Start_IT(WWDG_HandleTypeDef *hwwdg)
{
/* Process Locked */
__HAL_LOCK(hwwdg);
/* Change WWDG peripheral state */
hwwdg->State = HAL_WWDG_STATE_BUSY;
/* Enable the Early Wakeup Interrupt */
__HAL_WWDG_ENABLE_IT(WWDG_IT_EWI);
/* Enable the peripheral */
__HAL_WWDG_ENABLE(hwwdg);
/* Return function status */
return HAL_OK;
}
