mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

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targets/TARGET_STM/TARGET_STM32F1/device/stm32f1xx_hal_wwdg.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
187:0387e8f68319 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f1xx_hal_wwdg.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @brief WWDG HAL module driver.
AnnaBridge 187:0387e8f68319 6 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 7 * functionalities of the Window Watchdog (WWDG) peripheral:
<> 144:ef7eb2e8f9f7 8 * + Initialization and de-initialization functions
<> 144:ef7eb2e8f9f7 9 * + IO operation functions
AnnaBridge 165:e614a9f1c9e2 10 * + Peripheral State functions
<> 144:ef7eb2e8f9f7 11 @verbatim
<> 144:ef7eb2e8f9f7 12 ==============================================================================
<> 144:ef7eb2e8f9f7 13 ##### WWDG specific features #####
<> 144:ef7eb2e8f9f7 14 ==============================================================================
AnnaBridge 187:0387e8f68319 15 [..]
<> 144:ef7eb2e8f9f7 16 Once enabled the WWDG generates a system reset on expiry of a programmed
AnnaBridge 187:0387e8f68319 17 time period, unless the program refreshes the counter (downcounter)
<> 144:ef7eb2e8f9f7 18 before reaching 0x3F value (i.e. a reset is generated when the counter
AnnaBridge 187:0387e8f68319 19 value rolls over from 0x40 to 0x3F).
AnnaBridge 187:0387e8f68319 20
<> 144:ef7eb2e8f9f7 21 (+) An MCU reset is also generated if the counter value is refreshed
AnnaBridge 187:0387e8f68319 22 before the counter has reached the refresh window value. This
<> 144:ef7eb2e8f9f7 23 implies that the counter must be refreshed in a limited window.
<> 144:ef7eb2e8f9f7 24 (+) Once enabled the WWDG cannot be disabled except by a system reset.
<> 144:ef7eb2e8f9f7 25 (+) WWDGRST flag in RCC_CSR register can be used to inform when a WWDG
AnnaBridge 187:0387e8f68319 26 reset occurs.
AnnaBridge 187:0387e8f68319 27 (+) The WWDG counter input clock is derived from the APB clock divided
<> 144:ef7eb2e8f9f7 28 by a programmable prescaler.
AnnaBridge 165:e614a9f1c9e2 29 (+) WWDG clock (Hz) = PCLK1 / (4096 * Prescaler)
AnnaBridge 165:e614a9f1c9e2 30 (+) WWDG timeout (mS) = 1000 * Counter / WWDG clock
<> 144:ef7eb2e8f9f7 31 (+) WWDG Counter refresh is allowed between the following limits :
AnnaBridge 165:e614a9f1c9e2 32 (++) min time (mS) = 1000 * (Counter _ Window) / WWDG clock
AnnaBridge 165:e614a9f1c9e2 33 (++) max time (mS) = 1000 * (Counter _ 0x40) / WWDG clock
AnnaBridge 165:e614a9f1c9e2 34
AnnaBridge 187:0387e8f68319 35 (+) Min-max timeout value at 36 MHz(PCLK1): 910 us / 58.25 ms
AnnaBridge 187:0387e8f68319 36
AnnaBridge 187:0387e8f68319 37 (+) The Early Wakeup Interrupt (EWI) can be used if specific safety
AnnaBridge 165:e614a9f1c9e2 38 operations or data logging must be performed before the actual reset is
AnnaBridge 165:e614a9f1c9e2 39 generated. When the downcounter reaches the value 0x40, an EWI interrupt
AnnaBridge 187:0387e8f68319 40 is generated and the corresponding interrupt service routine (ISR) can
AnnaBridge 187:0387e8f68319 41 be used to trigger specific actions (such as communications or data
AnnaBridge 165:e614a9f1c9e2 42 logging), before resetting the device.
AnnaBridge 165:e614a9f1c9e2 43 In some applications, the EWI interrupt can be used to manage a software
AnnaBridge 187:0387e8f68319 44 system check and/or system recovery/graceful degradation, without
AnnaBridge 187:0387e8f68319 45 generating a WWDG reset. In this case, the corresponding interrupt
AnnaBridge 187:0387e8f68319 46 service routine (ISR) should reload the WWDG counter to avoid the WWDG
AnnaBridge 165:e614a9f1c9e2 47 reset, then trigger the required actions.
AnnaBridge 187:0387e8f68319 48 Note:When the EWI interrupt cannot be served, e.g. due to a system lock
AnnaBridge 165:e614a9f1c9e2 49 in a higher priority task, the WWDG reset will eventually be generated.
AnnaBridge 165:e614a9f1c9e2 50
AnnaBridge 165:e614a9f1c9e2 51 (+) Debug mode : When the microcontroller enters debug mode (core halted),
AnnaBridge 187:0387e8f68319 52 the WWDG counter either continues to work normally or stops, depending
AnnaBridge 165:e614a9f1c9e2 53 on DBG_WWDG_STOP configuration bit in DBG module, accessible through
AnnaBridge 165:e614a9f1c9e2 54 __HAL_DBGMCU_FREEZE_WWDG() and __HAL_DBGMCU_UNFREEZE_WWDG() macros
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 ##### How to use this driver #####
<> 144:ef7eb2e8f9f7 57 ==============================================================================
<> 144:ef7eb2e8f9f7 58 [..]
<> 144:ef7eb2e8f9f7 59 (+) Enable WWDG APB1 clock using __HAL_RCC_WWDG_CLK_ENABLE().
AnnaBridge 165:e614a9f1c9e2 60
AnnaBridge 187:0387e8f68319 61 (+) Set the WWDG prescaler, refresh window, counter value and Early Wakeup
AnnaBridge 165:e614a9f1c9e2 62 Interrupt mode using using HAL_WWDG_Init() function.
AnnaBridge 187:0387e8f68319 63 This enables WWDG peripheral and the downcounter starts downcounting
AnnaBridge 165:e614a9f1c9e2 64 from given counter value.
AnnaBridge 187:0387e8f68319 65 Init function can be called again to modify all watchdog parameters,
AnnaBridge 187:0387e8f68319 66 however if EWI mode has been set once, it can't be clear until next
AnnaBridge 165:e614a9f1c9e2 67 reset.
AnnaBridge 165:e614a9f1c9e2 68
AnnaBridge 165:e614a9f1c9e2 69 (+) The application program must refresh the WWDG counter at regular
AnnaBridge 165:e614a9f1c9e2 70 intervals during normal operation to prevent an MCU reset using
<> 144:ef7eb2e8f9f7 71 HAL_WWDG_Refresh() function. This operation must occur only when
AnnaBridge 165:e614a9f1c9e2 72 the counter is lower than the window value already programmed.
AnnaBridge 165:e614a9f1c9e2 73
AnnaBridge 187:0387e8f68319 74 (+) if Early Wakeup Interrupt mode is enable an interrupt is generated when
AnnaBridge 187:0387e8f68319 75 the counter reaches 0x40. User can add his own code in weak function
AnnaBridge 165:e614a9f1c9e2 76 HAL_WWDG_EarlyWakeupCallback().
AnnaBridge 165:e614a9f1c9e2 77
<> 144:ef7eb2e8f9f7 78 *** WWDG HAL driver macros list ***
<> 144:ef7eb2e8f9f7 79 ==================================
<> 144:ef7eb2e8f9f7 80 [..]
<> 144:ef7eb2e8f9f7 81 Below the list of most used macros in WWDG HAL driver.
AnnaBridge 165:e614a9f1c9e2 82
AnnaBridge 165:e614a9f1c9e2 83 (+) __HAL_WWDG_GET_IT_SOURCE: Check the selected WWDG's interrupt source.
AnnaBridge 165:e614a9f1c9e2 84 (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status.
AnnaBridge 165:e614a9f1c9e2 85 (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags.
<> 144:ef7eb2e8f9f7 86
<> 144:ef7eb2e8f9f7 87 @endverbatim
<> 144:ef7eb2e8f9f7 88 ******************************************************************************
<> 144:ef7eb2e8f9f7 89 * @attention
<> 144:ef7eb2e8f9f7 90 *
<> 144:ef7eb2e8f9f7 91 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 92 *
<> 144:ef7eb2e8f9f7 93 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 94 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 95 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 96 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 97 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 98 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 99 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 100 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 101 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 102 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 103 *
<> 144:ef7eb2e8f9f7 104 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 105 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 106 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 107 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 108 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 109 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 110 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 111 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 112 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 113 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 114 *
<> 144:ef7eb2e8f9f7 115 ******************************************************************************
AnnaBridge 165:e614a9f1c9e2 116 */
<> 144:ef7eb2e8f9f7 117
<> 144:ef7eb2e8f9f7 118 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 119 #include "stm32f1xx_hal.h"
<> 144:ef7eb2e8f9f7 120
<> 144:ef7eb2e8f9f7 121 /** @addtogroup STM32F1xx_HAL_Driver
<> 144:ef7eb2e8f9f7 122 * @{
<> 144:ef7eb2e8f9f7 123 */
<> 144:ef7eb2e8f9f7 124
AnnaBridge 165:e614a9f1c9e2 125 #ifdef HAL_WWDG_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 126 /** @defgroup WWDG WWDG
<> 144:ef7eb2e8f9f7 127 * @brief WWDG HAL module driver.
<> 144:ef7eb2e8f9f7 128 * @{
<> 144:ef7eb2e8f9f7 129 */
<> 144:ef7eb2e8f9f7 130
<> 144:ef7eb2e8f9f7 131 /* Private typedef -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 132 /* Private define ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 133 /* Private macro -------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 134 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 135 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 136 /* Exported functions --------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 137
<> 144:ef7eb2e8f9f7 138 /** @defgroup WWDG_Exported_Functions WWDG Exported Functions
<> 144:ef7eb2e8f9f7 139 * @{
<> 144:ef7eb2e8f9f7 140 */
<> 144:ef7eb2e8f9f7 141
AnnaBridge 165:e614a9f1c9e2 142 /** @defgroup WWDG_Exported_Functions_Group1 Initialization and Configuration functions
AnnaBridge 165:e614a9f1c9e2 143 * @brief Initialization and Configuration functions.
AnnaBridge 165:e614a9f1c9e2 144 *
AnnaBridge 165:e614a9f1c9e2 145 @verbatim
<> 144:ef7eb2e8f9f7 146 ==============================================================================
AnnaBridge 165:e614a9f1c9e2 147 ##### Initialization and Configuration functions #####
<> 144:ef7eb2e8f9f7 148 ==============================================================================
AnnaBridge 187:0387e8f68319 149 [..]
<> 144:ef7eb2e8f9f7 150 This section provides functions allowing to:
AnnaBridge 165:e614a9f1c9e2 151 (+) Initialize and start the WWDG according to the specified parameters
AnnaBridge 165:e614a9f1c9e2 152 in the WWDG_InitTypeDef of associated handle.
AnnaBridge 165:e614a9f1c9e2 153 (+) Initialize the WWDG MSP.
AnnaBridge 165:e614a9f1c9e2 154
<> 144:ef7eb2e8f9f7 155 @endverbatim
<> 144:ef7eb2e8f9f7 156 * @{
<> 144:ef7eb2e8f9f7 157 */
<> 144:ef7eb2e8f9f7 158
<> 144:ef7eb2e8f9f7 159 /**
AnnaBridge 165:e614a9f1c9e2 160 * @brief Initialize the WWDG according to the specified.
AnnaBridge 165:e614a9f1c9e2 161 * parameters in the WWDG_InitTypeDef of associated handle.
AnnaBridge 165:e614a9f1c9e2 162 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
AnnaBridge 165:e614a9f1c9e2 163 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 164 * @retval HAL status
<> 144:ef7eb2e8f9f7 165 */
<> 144:ef7eb2e8f9f7 166 HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 167 {
<> 144:ef7eb2e8f9f7 168 /* Check the WWDG handle allocation */
AnnaBridge 187:0387e8f68319 169 if (hwwdg == NULL)
<> 144:ef7eb2e8f9f7 170 {
<> 144:ef7eb2e8f9f7 171 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 172 }
<> 144:ef7eb2e8f9f7 173
<> 144:ef7eb2e8f9f7 174 /* Check the parameters */
<> 144:ef7eb2e8f9f7 175 assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
<> 144:ef7eb2e8f9f7 176 assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
AnnaBridge 165:e614a9f1c9e2 177 assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
AnnaBridge 165:e614a9f1c9e2 178 assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
AnnaBridge 165:e614a9f1c9e2 179 assert_param(IS_WWDG_EWI_MODE(hwwdg->Init.EWIMode));
AnnaBridge 165:e614a9f1c9e2 180
AnnaBridge 165:e614a9f1c9e2 181 /* Init the low level hardware */
AnnaBridge 165:e614a9f1c9e2 182 HAL_WWDG_MspInit(hwwdg);
AnnaBridge 165:e614a9f1c9e2 183
AnnaBridge 165:e614a9f1c9e2 184 /* Set WWDG Counter */
AnnaBridge 165:e614a9f1c9e2 185 WRITE_REG(hwwdg->Instance->CR, (WWDG_CR_WDGA | hwwdg->Init.Counter));
<> 144:ef7eb2e8f9f7 186
<> 144:ef7eb2e8f9f7 187 /* Set WWDG Prescaler and Window */
AnnaBridge 165:e614a9f1c9e2 188 WRITE_REG(hwwdg->Instance->CFR, (hwwdg->Init.EWIMode | hwwdg->Init.Prescaler | hwwdg->Init.Window));
<> 144:ef7eb2e8f9f7 189
<> 144:ef7eb2e8f9f7 190 /* Return function status */
<> 144:ef7eb2e8f9f7 191 return HAL_OK;
<> 144:ef7eb2e8f9f7 192 }
<> 144:ef7eb2e8f9f7 193
<> 144:ef7eb2e8f9f7 194 /**
AnnaBridge 165:e614a9f1c9e2 195 * @brief Initialize the WWDG MSP.
AnnaBridge 165:e614a9f1c9e2 196 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
AnnaBridge 165:e614a9f1c9e2 197 * the configuration information for the specified WWDG module.
AnnaBridge 165:e614a9f1c9e2 198 * @note When rewriting this function in user file, mechanism may be added
AnnaBridge 165:e614a9f1c9e2 199 * to avoid multiple initialize when HAL_WWDG_Init function is called
AnnaBridge 165:e614a9f1c9e2 200 * again to change parameters.
<> 144:ef7eb2e8f9f7 201 * @retval None
<> 144:ef7eb2e8f9f7 202 */
<> 144:ef7eb2e8f9f7 203 __weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 204 {
<> 144:ef7eb2e8f9f7 205 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 206 UNUSED(hwwdg);
AnnaBridge 165:e614a9f1c9e2 207
AnnaBridge 165:e614a9f1c9e2 208 /* NOTE: This function should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 209 the HAL_WWDG_MspInit could be implemented in the user file
<> 144:ef7eb2e8f9f7 210 */
<> 144:ef7eb2e8f9f7 211 }
<> 144:ef7eb2e8f9f7 212
<> 144:ef7eb2e8f9f7 213 /**
<> 144:ef7eb2e8f9f7 214 * @}
<> 144:ef7eb2e8f9f7 215 */
<> 144:ef7eb2e8f9f7 216
AnnaBridge 165:e614a9f1c9e2 217 /** @defgroup WWDG_Exported_Functions_Group2 IO operation functions
AnnaBridge 187:0387e8f68319 218 * @brief IO operation functions
<> 144:ef7eb2e8f9f7 219 *
AnnaBridge 165:e614a9f1c9e2 220 @verbatim
<> 144:ef7eb2e8f9f7 221 ==============================================================================
AnnaBridge 165:e614a9f1c9e2 222 ##### IO operation functions #####
AnnaBridge 187:0387e8f68319 223 ==============================================================================
AnnaBridge 165:e614a9f1c9e2 224 [..]
<> 144:ef7eb2e8f9f7 225 This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 226 (+) Refresh the WWDG.
AnnaBridge 165:e614a9f1c9e2 227 (+) Handle WWDG interrupt request and associated function callback.
<> 144:ef7eb2e8f9f7 228
<> 144:ef7eb2e8f9f7 229 @endverbatim
<> 144:ef7eb2e8f9f7 230 * @{
<> 144:ef7eb2e8f9f7 231 */
<> 144:ef7eb2e8f9f7 232
<> 144:ef7eb2e8f9f7 233 /**
AnnaBridge 165:e614a9f1c9e2 234 * @brief Refresh the WWDG.
AnnaBridge 165:e614a9f1c9e2 235 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
AnnaBridge 165:e614a9f1c9e2 236 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 237 * @retval HAL status
<> 144:ef7eb2e8f9f7 238 */
AnnaBridge 165:e614a9f1c9e2 239 HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 240 {
AnnaBridge 165:e614a9f1c9e2 241 /* Write to WWDG CR the WWDG Counter value to refresh with */
AnnaBridge 165:e614a9f1c9e2 242 WRITE_REG(hwwdg->Instance->CR, (hwwdg->Init.Counter));
<> 144:ef7eb2e8f9f7 243
<> 144:ef7eb2e8f9f7 244 /* Return function status */
<> 144:ef7eb2e8f9f7 245 return HAL_OK;
<> 144:ef7eb2e8f9f7 246 }
<> 144:ef7eb2e8f9f7 247
<> 144:ef7eb2e8f9f7 248 /**
AnnaBridge 165:e614a9f1c9e2 249 * @brief Handle WWDG interrupt request.
AnnaBridge 165:e614a9f1c9e2 250 * @note The Early Wakeup Interrupt (EWI) can be used if specific safety operations
AnnaBridge 165:e614a9f1c9e2 251 * or data logging must be performed before the actual reset is generated.
AnnaBridge 187:0387e8f68319 252 * The EWI interrupt is enabled by calling HAL_WWDG_Init function with
AnnaBridge 165:e614a9f1c9e2 253 * EWIMode set to WWDG_EWI_ENABLE.
AnnaBridge 165:e614a9f1c9e2 254 * When the downcounter reaches the value 0x40, and EWI interrupt is
AnnaBridge 165:e614a9f1c9e2 255 * generated and the corresponding Interrupt Service Routine (ISR) can
AnnaBridge 165:e614a9f1c9e2 256 * be used to trigger specific actions (such as communications or data
AnnaBridge 165:e614a9f1c9e2 257 * logging), before resetting the device.
AnnaBridge 165:e614a9f1c9e2 258 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
AnnaBridge 165:e614a9f1c9e2 259 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 260 * @retval None
<> 144:ef7eb2e8f9f7 261 */
<> 144:ef7eb2e8f9f7 262 void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
AnnaBridge 165:e614a9f1c9e2 263 {
<> 144:ef7eb2e8f9f7 264 /* Check if Early Wakeup Interrupt is enable */
AnnaBridge 187:0387e8f68319 265 if (__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET)
<> 144:ef7eb2e8f9f7 266 {
AnnaBridge 165:e614a9f1c9e2 267 /* Check if WWDG Early Wakeup Interrupt occurred */
AnnaBridge 187:0387e8f68319 268 if (__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
AnnaBridge 165:e614a9f1c9e2 269 {
<> 144:ef7eb2e8f9f7 270 /* Clear the WWDG Early Wakeup flag */
AnnaBridge 165:e614a9f1c9e2 271 __HAL_WWDG_CLEAR_FLAG(hwwdg, WWDG_FLAG_EWIF);
AnnaBridge 165:e614a9f1c9e2 272
AnnaBridge 187:0387e8f68319 273 /* Early Wakeup callback */
AnnaBridge 165:e614a9f1c9e2 274 HAL_WWDG_EarlyWakeupCallback(hwwdg);
AnnaBridge 165:e614a9f1c9e2 275 }
<> 144:ef7eb2e8f9f7 276 }
<> 144:ef7eb2e8f9f7 277 }
<> 144:ef7eb2e8f9f7 278
<> 144:ef7eb2e8f9f7 279 /**
AnnaBridge 165:e614a9f1c9e2 280 * @brief WWDG Early Wakeup callback.
AnnaBridge 165:e614a9f1c9e2 281 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
AnnaBridge 165:e614a9f1c9e2 282 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 283 * @retval None
<> 144:ef7eb2e8f9f7 284 */
AnnaBridge 187:0387e8f68319 285 __weak void HAL_WWDG_EarlyWakeupCallback(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 286 {
<> 144:ef7eb2e8f9f7 287 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 288 UNUSED(hwwdg);
AnnaBridge 165:e614a9f1c9e2 289
AnnaBridge 165:e614a9f1c9e2 290 /* NOTE: This function should not be modified, when the callback is needed,
AnnaBridge 165:e614a9f1c9e2 291 the HAL_WWDG_EarlyWakeupCallback could be implemented in the user file
<> 144:ef7eb2e8f9f7 292 */
<> 144:ef7eb2e8f9f7 293 }
<> 144:ef7eb2e8f9f7 294
<> 144:ef7eb2e8f9f7 295 /**
<> 144:ef7eb2e8f9f7 296 * @}
<> 144:ef7eb2e8f9f7 297 */
<> 144:ef7eb2e8f9f7 298
<> 144:ef7eb2e8f9f7 299 /**
<> 144:ef7eb2e8f9f7 300 * @}
<> 144:ef7eb2e8f9f7 301 */
<> 144:ef7eb2e8f9f7 302
<> 144:ef7eb2e8f9f7 303 #endif /* HAL_WWDG_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 304 /**
<> 144:ef7eb2e8f9f7 305 * @}
<> 144:ef7eb2e8f9f7 306 */
<> 144:ef7eb2e8f9f7 307
<> 144:ef7eb2e8f9f7 308 /**
<> 144:ef7eb2e8f9f7 309 * @}
<> 144:ef7eb2e8f9f7 310 */
<> 144:ef7eb2e8f9f7 311
<> 144:ef7eb2e8f9f7 312 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/