Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_wwdg.c

Revision:

394:83f921546702

Parent:

393:17d2d502961d

Child:

395:bfce16e86ea4

--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_wwdg.c	Fri Nov 07 12:00:11 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,444 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32l1xx_hal_wwdg.c
-  * @author  MCD Application Team
-  * @version V1.0.0
-  * @date    5-September-2014
-  * @brief   WWDG HAL module driver.
-  *          This file provides firmware functions to manage the following 
-  *          functionalities of the Window Watchdog (WWDG) peripheral:
-  *           + Initialization and de-initialization functions
-  *           + IO operation functions
-  *           + Peripheral State functions       
-  @verbatim
-  ==============================================================================
-                      ##### WWDG specific features #####
-  ==============================================================================
-  [..] 
-    Once enabled the WWDG generates a system reset on expiry of a programmed
-    time period, unless the program refreshes the counter (downcounter) 
-    before reaching 0x3F value (i.e. a reset is generated when the counter
-    value rolls over from 0x40 to 0x3F). 
-       
-    (+) An MCU reset is also generated if the counter value is refreshed
-        before the counter has reached the refresh window value. This 
-        implies that the counter must be refreshed in a limited window.
-    (+) Once enabled the WWDG cannot be disabled except by a system reset.
-    (+) WWDGRST flag in RCC_CSR register can be used to inform when a WWDG
-        reset occurs.               
-    (+) The WWDG counter input clock is derived from the APB clock divided 
-        by a programmable prescaler.
-    (+) WWDG clock (Hz) = PCLK1 / (4096 * Prescaler)
-    (+) WWDG timeout (mS) = 1000 * Counter / WWDG clock
-    (+) WWDG Counter refresh is allowed between the following limits :
-        (++) min time (mS) = 1000 * (Counter – Window) / WWDG clock
-        (++) max time (mS) = 1000 * (Counter – 0x40) / WWDG clock
-    
-    (+) Min-max timeout value at @32MHz (PCLK1): ~128us / ~65.6ms.
-
-
-                     ##### How to use this driver #####
-  ==============================================================================
-  [..]
-    (+) Enable WWDG APB1 clock using __WWDG_CLK_ENABLE().
-    (+) Set the WWDG prescaler, refresh window and counter value 
-        using HAL_WWDG_Init() function.
-    (+) Start the WWDG using HAL_WWDG_Start() function.
-        When the WWDG is enabled the counter value should be configured to 
-        a value greater than 0x40 to prevent generating an immediate reset.
-    (+) Optionally you can enable the Early Wakeup Interrupt (EWI) which is 
-        generated when the counter reaches 0x40, and then start the WWDG using
-        HAL_WWDG_Start_IT(). At EWI HAL_WWDG_WakeupCallback is executed and user can 
-        add his own code by customization of function pointer HAL_WWDG_WakeupCallback
-        Once enabled, EWI interrupt cannot be disabled except by a system reset.          
-    (+) Then the application program must refresh the WWDG counter at regular
-        intervals during normal operation to prevent an MCU reset, using
-        HAL_WWDG_Refresh() function. This operation must occur only when
-        the counter is lower than the refresh window value already programmed.
-        
-     *** WWDG HAL driver macros list ***
-     ==================================
-     [..]
-       Below the list of most used macros in WWDG HAL driver.
-       
-      (+) __HAL_WWDG_ENABLE: Enable the WWDG peripheral 
-      (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status
-      (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags 
-      (+) __HAL_WWDG_ENABLE_IT:  Enables the WWDG early wakeup interrupt 
-
-  @endverbatim
-  ******************************************************************************
-  * @attention
-  *
-  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
-  *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-  */ 
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32l1xx_hal.h"
-
-/** @addtogroup STM32L1xx_HAL_Driver
-  * @{
-  */
-
-/** @defgroup WWDG WWDG
-  * @brief WWDG HAL module driver.
-  * @{
-  */
-
-#ifdef HAL_WWDG_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup WWDG_Exported_Functions WWDG Exported Functions
-  * @{
-  */
-
-/** @defgroup WWDG_Exported_Functions_Group1 Initialization and de-initialization functions 
- *  @brief    Initialization and Configuration functions. 
- *
-@verbatim    
-  ==============================================================================
-          ##### Initialization and de-initialization functions #####
-  ==============================================================================
-  [..]  
-    This section provides functions allowing to:
-    (+) Initialize the WWDG according to the specified parameters 
-        in the WWDG_InitTypeDef and create the associated handle
-    (+) DeInitialize the WWDG peripheral
-    (+) Initialize the WWDG MSP
-    (+) DeInitialize the WWDG MSP 
- 
-@endverbatim
-  * @{
-  */
-
-/**
-  * @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  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  Initializes the WWDG MSP.
-  * @param  hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
-  *              the configuration information for the specified WWDG module.
-  * @retval None
-  */
-__weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg)
-{
-  /* NOTE: This function Should not be modified, when the callback is needed,
-           the HAL_WWDG_MspInit could be implemented in the user file
-   */
-}
-
-/**
-  * @brief  DeInitializes the WWDG MSP.
-  * @param  hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
-  *              the configuration information for the specified WWDG module.
-  * @retval None
-  */
-__weak void HAL_WWDG_MspDeInit(WWDG_HandleTypeDef *hwwdg)
-{
-  /* NOTE: This function Should not be modified, when the callback is needed,
-           the HAL_WWDG_MspDeInit could be implemented in the user file
-   */
-}
-
-/**
-  * @}
-  */
-
-/** @defgroup WWDG_Exported_Functions_Group2 IO operation functions 
- *  @brief    IO operation functions 
- *
-@verbatim   
-  ==============================================================================
-                       ##### IO operation functions #####
-  ==============================================================================  
-  [..]  
-    This section provides functions allowing to:
-    (+) Start the WWDG.
-    (+) Refresh the WWDG.
-    (+) Handle WWDG interrupt request. 
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Starts the WWDG.
-  * @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_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: pointer to a WWDG_HandleTypeDef structure that contains
-  *              the configuration information for the specified WWDG module.
-  * @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;
-}
-
-/**
-  * @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  Handles WWDG interrupt request.
-  * @note   The Early Wakeup Interrupt (EWI) can be used if specific safety operations 
-  *         or data logging must be performed before the actual reset is generated. 
-  *         The EWI interrupt is enabled using __HAL_WWDG_ENABLE_IT() macro.
-  *         When the downcounter reaches the value 0x40, and EWI interrupt is 
-  *         generated and the corresponding Interrupt Service Routine (ISR) can 
-  *         be used to trigger specific actions (such as communications or data 
-  *         logging), before resetting the device. 
-  * @param  hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
-  *              the configuration information for the specified WWDG module.
-  * @retval None
-  */
-void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
-{ 
-  /* WWDG Early Wakeup Interrupt occurred */   
-  if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
-  {
-    /* Early Wakeup callback */ 
-    HAL_WWDG_WakeupCallback(hwwdg);
-    
-    /* Change WWDG peripheral state */
-    hwwdg->State = HAL_WWDG_STATE_READY; 
-    
-    /* Clear the WWDG Data Ready flag */
-    __HAL_WWDG_CLEAR_IT(hwwdg, WWDG_FLAG_EWIF);
-    
-    /* Process Unlocked */
-    __HAL_UNLOCK(hwwdg);
-  }
-} 
-
-/**
-  * @brief  Early Wakeup WWDG callback.
-  * @param  hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
-  *              the configuration information for the specified WWDG module.
-  * @retval None
-  */
-__weak void HAL_WWDG_WakeupCallback(WWDG_HandleTypeDef* hwwdg)
-{
-  /* NOTE: This function Should not be modified, when the callback is needed,
-           the HAL_WWDG_WakeupCallback could be implemented in the user file
-   */
-}
-
-/**
-  * @}
-  */
-
-/** @defgroup WWDG_Exported_Functions_Group3 Peripheral State functions 
- *  @brief    Peripheral State functions. 
- *
-@verbatim   
-  ==============================================================================
-                        ##### Peripheral State functions #####
-  ==============================================================================  
-  [..]
-    This subsection permits to get in run-time the status of the peripheral 
-    and the data flow.
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Returns the WWDG state.
-  * @param  hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
-  *              the configuration information for the specified WWDG module.
-  * @retval HAL state
-  */
-HAL_WWDG_StateTypeDef HAL_WWDG_GetState(WWDG_HandleTypeDef *hwwdg)
-{
-  return hwwdg->State;
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-#endif /* HAL_WWDG_MODULE_ENABLED */
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/