Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_iwdg.c

Revision:

394:83f921546702

Parent:

393:17d2d502961d

Child:

395:bfce16e86ea4

--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_iwdg.c	Fri Nov 07 12:00:11 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,360 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32l1xx_hal_iwdg.c
-  * @author  MCD Application Team
-  * @version V1.0.0
-  * @date    5-September-2014
-  * @brief   IWDG HAL module driver.
-  *    
-  *          This file provides firmware functions to manage the following 
-  *          functionalities of the IWDG peripheral:
-  *           + Initialization and Configuration functions
-  *           + IO operation functions
-  *           + Peripheral State functions
-  *         
-  @verbatim 
-  
-================================================================================
-                    ##### IWDG specific features #####
-================================================================================
-    [..] 
-    (+) The IWDG can be started by either software or hardware (configurable
-         through option byte).
-    (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
-         thus stays active even if the main clock fails.
-      (+) Once the IWDG is started, the LSI is forced ON and cannot be disabled
-         (LSI cannot be disabled too), and the counter starts counting down from 
-         the reset value of 0xFFF. When it reaches the end of count value (0x000)
-         a system reset is generated.
-    (+) The IWDG counter should be refreshed at regular intervals, otherwise the
-         watchdog generates an MCU reset when the counter reaches 0.          
-    (+) The IWDG is implemented in the VDD voltage domain that is still functional
-         in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
-      (+) IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
-         reset occurs.
-
-    (+) Min-max timeout value @37KHz (LSI): ~108us / ~28.3s
-         The IWDG timeout may vary due to LSI frequency dispersion. STM32L1xx
-         devices provide the capability to measure the LSI frequency (LSI clock
-         connected internally to TIM10 CH1 input capture). The measured value
-         can be used to have an IWDG timeout with an acceptable accuracy. 
-         For more information, please refer to the STM32L1xx Reference manual.
-
-                     ##### How to use this driver #####
-  ==============================================================================
-    [..]
-      (+) Set the IWDG prescaler and reload value 
-          using HAL_IWDG_Init() function.
-      (+) Use IWDG using HAL_IWDG_Start() function to:
-          (++) Enable write access to IWDG_PR and IWDG_RLR registers.   
-          (++) Configure the IWDG prescaler and counter reload values.
-          (++) Reload IWDG counter with value defined in the IWDG_RLR register.
-          (++) Start the IWDG, when the IWDG is used in software mode (no need 
-               to enable the LSI, it will be enabled by hardware).
-      (+) Then the application program must refresh the IWDG counter at regular
-          intervals during normal operation to prevent an MCU reset, using
-          HAL_IWDG_Refresh() function.  
-     
-     *** IWDG HAL driver macros list ***
-     ====================================
-     [..]
-       Below the list of most used macros in IWDG HAL driver.
-       
-      (+) __HAL_IWDG_START: Enable the IWDG peripheral
-      (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register    
-      (+) __HAL_IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers
-      (+) __HAL_IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers
-      (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
-      (+) __HAL_IWDG_CLEAR_FLAG: Clear the IWDG's pending flags      
-            
-  @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 IWDG IWDG
-  * @brief IWDG HAL module driver.
-  * @{
-  */
-
-#ifdef HAL_IWDG_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-
-/** @defgroup IWDG_Private_Defines IWDG Private Defines
-  * @{
-  */
-
-#define HAL_IWDG_DEFAULT_TIMEOUT (uint32_t)1000
-
-/**
-  * @}
-  */
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup IWDG_Exported_Functions IWDG Exported Functions
-  * @{
-  */
-
-/** @defgroup IWDG_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 IWDG according to the specified parameters 
-          in the IWDG_InitTypeDef and create the associated handle
-      (+) Initialize the IWDG MSP
-      (+) DeInitialize IWDG MSP 
- 
-@endverbatim
-  * @{
-  */
-
-/**
-  * @brief  Initializes the IWDG according to the specified
-  *         parameters in the IWDG_InitTypeDef and creates the associated handle.
-  * @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)
-{
-  /* Check the IWDG handle allocation */
-  if(hiwdg == HAL_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));
-  
-  /* Check pending flag, if previous update not done, return error */
-  if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
-     &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET))
-  {
-    return HAL_ERROR;
-  }
-    
-  if(hiwdg->State == HAL_IWDG_STATE_RESET)
-  {  
-    /* Init the low level hardware */
-    HAL_IWDG_MspInit(hiwdg);
-  }
-  
-  /* Change IWDG peripheral state */
-  hiwdg->State = HAL_IWDG_STATE_BUSY;  
-  
-  /* Enable write access to IWDG_PR and IWDG_RLR registers */  
-  __HAL_IWDG_ENABLE_WRITE_ACCESS(hiwdg);
-  
-  /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
-  MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
-  MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
- 
-  /* Change IWDG peripheral state */
-  hiwdg->State = HAL_IWDG_STATE_READY;
-  
-  /* Return function status */
-  return HAL_OK;
-}
-
-/**
-  * @brief  Initializes the IWDG MSP.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval None
-  */
-__weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
-{
-  /* NOTE : This function Should not be modified, when the callback is needed,
-            the HAL_IWDG_MspInit could be implemented in the user file
-   */
-}
-
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_Exported_Functions_Group2 IO operation functions  
- *  @brief   IO operation functions  
- *
-@verbatim   
- ===============================================================================
-                      ##### IO operation functions #####
- ===============================================================================  
-    [..]  This section provides functions allowing to:
-      (+) Start the IWDG.
-      (+) Refresh the IWDG.
-
-@endverbatim
-  * @{
-  */
-
-/**
-  * @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: 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;
-}
-
-/**
-  * @}
-  */
-
-/** @defgroup IWDG_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 IWDG state.
-  * @param  hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
-  *                the configuration information for the specified IWDG module.
-  * @retval HAL state
-  */
-HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
-{
-  return hiwdg->State;
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-#endif /* HAL_IWDG_MODULE_ENABLED */
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
-