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Diffstat (limited to 'lib/hal-stm32f0/source/stm32f0xx_hal_wwdg.c')
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diff --git a/lib/hal-stm32f0/source/stm32f0xx_hal_wwdg.c b/lib/hal-stm32f0/source/stm32f0xx_hal_wwdg.c deleted file mode 100644 index ae48b997..00000000 --- a/lib/hal-stm32f0/source/stm32f0xx_hal_wwdg.c +++ /dev/null @@ -1,320 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f0xx_hal_wwdg.c - * @author MCD Application Team - * @brief WWDG HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Window Watchdog (WWDG) peripheral: - * + Initialization and Configuration function - * + IO operation 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 (T[6;0] 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 informs when a WWDG reset has - occurred (check available with __HAL_RCC_GET_FLAG(RCC_FLAG_WWDGRST)). - - (+) The WWDG downcounter input clock is derived from the APB clock divided - by a programmable prescaler. - - (+) WWDG downcounter clock (Hz) = PCLK / (4096 * Prescaler) - - (+) WWDG timeout (ms) = (1000 * (T[5;0] + 1)) / (WWDG downcounter clock) - where T[5;0] are the lowest 6 bits of downcounter. - - (+) WWDG Counter refresh is allowed between the following limits : - (++) min time (ms) = (1000 * (T[5;0] - Window)) / (WWDG downcounter clock) - (++) max time (ms) = (1000 * (T[5;0] - 0x40)) / (WWDG downcounter clock) - - (+) Min-max timeout value @48 MHz(PCLK): ~85,3us / ~5,46 ms - - (+) The Early Wakeup Interrupt (EWI) can be used if specific safety - operations or data logging must be performed before the actual reset is - generated. When the downcounter reaches the value 0x40, an 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. - In some applications, the EWI interrupt can be used to manage a software - system check and/or system recovery/graceful degradation, without - generating a WWDG reset. In this case, the corresponding interrupt - service routine (ISR) should reload the WWDG counter to avoid the WWDG - reset, then trigger the required actions. - Note:When the EWI interrupt cannot be served, e.g. due to a system lock - in a higher priority task, the WWDG reset will eventually be generated. - - (+) Debug mode : When the microcontroller enters debug mode (core halted), - the WWDG counter either continues to work normally or stops, depending - on DBG_WWDG_STOP configuration bit in DBG module, accessible through - __HAL_DBGMCU_FREEZE_WWDG() and __HAL_DBGMCU_UNFREEZE_WWDG() macros - - ##### How to use this driver ##### - ============================================================================== - [..] - (+) Enable WWDG APB1 clock using __HAL_RCC_WWDG_CLK_ENABLE(). - - (+) Set the WWDG prescaler, refresh window, counter value and Early Wakeup - Interrupt mode using using HAL_WWDG_Init() function. - This enables WWDG peripheral and the downcounter starts downcounting - from given counter value. - Init function can be called again to modify all watchdog parameters, - however if EWI mode has been set once, it can't be clear until next - reset. - - (+) 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 window value already programmed. - - (+) if Early Wakeup Interrupt mode is enable an interrupt is generated when - the counter reaches 0x40. User can add his own code in weak function - HAL_WWDG_EarlyWakeupCallback(). - - *** WWDG HAL driver macros list *** - ================================== - [..] - Below the list of most used macros in WWDG HAL driver. - - (+) __HAL_WWDG_GET_IT_SOURCE: Check the selected WWDG's interrupt source. - (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status. - (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags. - - @endverbatim - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2016 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 "stm32f0xx_hal.h" - -/** @addtogroup STM32F0xx_HAL_Driver - * @{ - */ - -#ifdef HAL_WWDG_MODULE_ENABLED -/** @defgroup WWDG WWDG - * @brief WWDG HAL module driver. - * @{ - */ - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/* Exported functions --------------------------------------------------------*/ - -/** @defgroup WWDG_Exported_Functions WWDG Exported Functions - * @{ - */ - -/** @defgroup WWDG_Exported_Functions_Group1 Initialization and Configuration functions - * @brief Initialization and Configuration functions. - * -@verbatim - ============================================================================== - ##### Initialization and Configuration functions ##### - ============================================================================== - [..] - This section provides functions allowing to: - (+) Initialize and start the WWDG according to the specified parameters - in the WWDG_InitTypeDef of associated handle. - (+) Initialize the WWDG MSP. - -@endverbatim - * @{ - */ - -/** - * @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 Initialize the WWDG MSP. - * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains - * the configuration information for the specified WWDG module. - * @note When rewriting this function in user file, mechanism may be added - * to avoid multiple initialize when HAL_WWDG_Init function is called - * again to change parameters. - * @retval None - */ -__weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hwwdg); - - /* NOTE: This function should not be modified, when the callback is needed, - the HAL_WWDG_MspInit 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: - (+) Refresh the WWDG. - (+) Handle WWDG interrupt request and associated function callback. - -@endverbatim - * @{ - */ - -/** - * @brief Refresh 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_Refresh(WWDG_HandleTypeDef *hwwdg) -{ - /* Write to WWDG CR the WWDG Counter value to refresh with */ - WRITE_REG(hwwdg->Instance->CR, (hwwdg->Init.Counter)); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Handle 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 by calling HAL_WWDG_Init function with - * EWIMode set to WWDG_EWI_ENABLE. - * 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) -{ - /* Check if Early Wakeup Interrupt is enable */ - if(__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET) - { - /* Check if WWDG Early Wakeup Interrupt occurred */ - if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET) - { - /* Clear the WWDG Early Wakeup flag */ - __HAL_WWDG_CLEAR_FLAG(hwwdg, WWDG_FLAG_EWIF); - - /* Early Wakeup callback */ - HAL_WWDG_EarlyWakeupCallback(hwwdg); - } - } -} - - -/** - * @brief WWDG Early Wakeup 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_EarlyWakeupCallback(WWDG_HandleTypeDef* hwwdg) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hwwdg); - - /* NOTE: This function should not be modified, when the callback is needed, - the HAL_WWDG_EarlyWakeupCallback could be implemented in the user file - */ -} - -/** - * @} - */ - -/** - * @} - */ - -#endif /* HAL_WWDG_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |