Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_wwdg.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f7xx_hal_wwdg.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @version V1.1.0
<> 144:ef7eb2e8f9f7 6 * @date 22-April-2016
<> 144:ef7eb2e8f9f7 7 * @brief WWDG HAL module driver.
<> 144:ef7eb2e8f9f7 8 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 9 * functionalities of the Window Watchdog (WWDG) peripheral:
<> 144:ef7eb2e8f9f7 10 * + Initialization and Configuration function
<> 144:ef7eb2e8f9f7 11 * + IO operation functions
<> 144:ef7eb2e8f9f7 12 @verbatim
<> 144:ef7eb2e8f9f7 13 ==============================================================================
<> 144:ef7eb2e8f9f7 14 ##### WWDG specific features #####
<> 144:ef7eb2e8f9f7 15 ==============================================================================
<> 144:ef7eb2e8f9f7 16 [..]
<> 144:ef7eb2e8f9f7 17 Once enabled the WWDG generates a system reset on expiry of a programmed
<> 144:ef7eb2e8f9f7 18 time period, unless the program refreshes the counter (T[6;0] downcounter)
<> 144:ef7eb2e8f9f7 19 before reaching 0x3F value (i.e. a reset is generated when the counter
<> 144:ef7eb2e8f9f7 20 value rolls over from 0x40 to 0x3F).
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 (+) An MCU reset is also generated if the counter value is refreshed
<> 144:ef7eb2e8f9f7 23 before the counter has reached the refresh window value. This
<> 144:ef7eb2e8f9f7 24 implies that the counter must be refreshed in a limited window.
<> 144:ef7eb2e8f9f7 25
<> 144:ef7eb2e8f9f7 26 (+) Once enabled the WWDG cannot be disabled except by a system reset.
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 (+) WWDGRST flag in RCC_CSR register informs when a WWDG reset has
<> 144:ef7eb2e8f9f7 29 occurred (check available with __HAL_RCC_GET_FLAG(RCC_FLAG_WWDGRST)).
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 (+) The WWDG downcounter input clock is derived from the APB clock divided
<> 144:ef7eb2e8f9f7 32 by a programmable prescaler.
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 (+) WWDG downcounter clock (Hz) = PCLK1 / (4096 * Prescaler)
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 (+) WWDG timeout (ms) = (1000 * (T[5;0] + 1)) / (WWDG downcounter clock)
<> 144:ef7eb2e8f9f7 37 where T[5;0] are the lowest 6 bits of downcounter.
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 (+) WWDG Counter refresh is allowed between the following limits :
<> 144:ef7eb2e8f9f7 40 (++) min time (ms) = (1000 * (T[5;0] - Window)) / (WWDG downcounter clock)
<> 144:ef7eb2e8f9f7 41 (++) max time (ms) = (1000 * (T[5;0] - 0x40)) / (WWDG downcounter clock)
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 (+) Min-max timeout value @80 MHz(PCLK1): ~51.2 us / ~26.22 ms
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 (+) The Early Wakeup Interrupt (EWI) can be used if specific safety
<> 144:ef7eb2e8f9f7 46 operations or data logging must be performed before the actual reset is
<> 144:ef7eb2e8f9f7 47 generated. When the downcounter reaches the value 0x40, an EWI interrupt
<> 144:ef7eb2e8f9f7 48 is generated and the corresponding interrupt service routine (ISR) can
<> 144:ef7eb2e8f9f7 49 be used to trigger specific actions (such as communications or data
<> 144:ef7eb2e8f9f7 50 logging), before resetting the device.
<> 144:ef7eb2e8f9f7 51 In some applications, the EWI interrupt can be used to manage a software
<> 144:ef7eb2e8f9f7 52 system check and/or system recovery/graceful degradation, without
<> 144:ef7eb2e8f9f7 53 generating a WWDG reset. In this case, the corresponding interrupt
<> 144:ef7eb2e8f9f7 54 service routine (ISR) should reload the WWDG counter to avoid the WWDG
<> 144:ef7eb2e8f9f7 55 reset, then trigger the required actions.
<> 144:ef7eb2e8f9f7 56 Note:When the EWI interrupt cannot be served, e.g. due to a system lock
<> 144:ef7eb2e8f9f7 57 in a higher priority task, the WWDG reset will eventually be generated.
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59 (+) Debug mode : When the microcontroller enters debug mode (core halted),
<> 144:ef7eb2e8f9f7 60 the WWDG counter either continues to work normally or stops, depending
<> 144:ef7eb2e8f9f7 61 on DBG_WWDG_STOP configuration bit in DBG module, accessible through
<> 144:ef7eb2e8f9f7 62 __HAL_DBGMCU_FREEZE_WWDG() and __HAL_DBGMCU_UNFREEZE_WWDG() macros
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 ##### How to use this driver #####
<> 144:ef7eb2e8f9f7 65 ==============================================================================
<> 144:ef7eb2e8f9f7 66 [..]
<> 144:ef7eb2e8f9f7 67 (+) Enable WWDG APB1 clock using __HAL_RCC_WWDG_CLK_ENABLE().
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 (+) Set the WWDG prescaler, refresh window, counter value and Early Wakeup
<> 144:ef7eb2e8f9f7 70 Interrupt mode using using HAL_WWDG_Init() function.
<> 144:ef7eb2e8f9f7 71 This enables WWDG peripheral and the downcounter starts downcounting
<> 144:ef7eb2e8f9f7 72 from given counter value.
<> 144:ef7eb2e8f9f7 73 Init function can be called again to modify all watchdog parameters,
<> 144:ef7eb2e8f9f7 74 however if EWI mode has been set once, it can't be clear until next
<> 144:ef7eb2e8f9f7 75 reset.
<> 144:ef7eb2e8f9f7 76
<> 144:ef7eb2e8f9f7 77 (+) The application program must refresh the WWDG counter at regular
<> 144:ef7eb2e8f9f7 78 intervals during normal operation to prevent an MCU reset using
<> 144:ef7eb2e8f9f7 79 HAL_WWDG_Refresh() function. This operation must occur only when
<> 144:ef7eb2e8f9f7 80 the counter is lower than the window value already programmed.
<> 144:ef7eb2e8f9f7 81
<> 144:ef7eb2e8f9f7 82 (+) if Early Wakeup Interrupt mode is enable an interrupt is generated when
<> 144:ef7eb2e8f9f7 83 the counter reaches 0x40. User can add his own code in weak function
<> 144:ef7eb2e8f9f7 84 HAL_WWDG_EarlyWakeupCallback().
<> 144:ef7eb2e8f9f7 85
<> 144:ef7eb2e8f9f7 86 *** WWDG HAL driver macros list ***
<> 144:ef7eb2e8f9f7 87 ==================================
<> 144:ef7eb2e8f9f7 88 [..]
<> 144:ef7eb2e8f9f7 89 Below the list of most used macros in WWDG HAL driver.
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 (+) __HAL_WWDG_GET_IT_SOURCE: Check the selected WWDG's interrupt source.
<> 144:ef7eb2e8f9f7 92 (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status.
<> 144:ef7eb2e8f9f7 93 (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags.
<> 144:ef7eb2e8f9f7 94
<> 144:ef7eb2e8f9f7 95 @endverbatim
<> 144:ef7eb2e8f9f7 96 ******************************************************************************
<> 144:ef7eb2e8f9f7 97 * @attention
<> 144:ef7eb2e8f9f7 98 *
<> 144:ef7eb2e8f9f7 99 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 100 *
<> 144:ef7eb2e8f9f7 101 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 102 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 103 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 104 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 105 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 106 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 107 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 108 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 109 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 110 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 111 *
<> 144:ef7eb2e8f9f7 112 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 113 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 114 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 115 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 116 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 117 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 118 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 119 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 120 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 121 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 122 *
<> 144:ef7eb2e8f9f7 123 ******************************************************************************
<> 144:ef7eb2e8f9f7 124 */
<> 144:ef7eb2e8f9f7 125
<> 144:ef7eb2e8f9f7 126 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 127 #include "stm32f7xx_hal.h"
<> 144:ef7eb2e8f9f7 128
<> 144:ef7eb2e8f9f7 129 /** @addtogroup STM32F7xx_HAL_Driver
<> 144:ef7eb2e8f9f7 130 * @{
<> 144:ef7eb2e8f9f7 131 */
<> 144:ef7eb2e8f9f7 132
<> 144:ef7eb2e8f9f7 133 #ifdef HAL_WWDG_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 134 /** @defgroup WWDG WWDG
<> 144:ef7eb2e8f9f7 135 * @brief WWDG HAL module driver.
<> 144:ef7eb2e8f9f7 136 * @{
<> 144:ef7eb2e8f9f7 137 */
<> 144:ef7eb2e8f9f7 138
<> 144:ef7eb2e8f9f7 139 /* Private typedef -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 140 /* Private define ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 141 /* Private macro -------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 142 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 143 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 144 /* Exported functions --------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 145
<> 144:ef7eb2e8f9f7 146 /** @defgroup WWDG_Exported_Functions WWDG Exported Functions
<> 144:ef7eb2e8f9f7 147 * @{
<> 144:ef7eb2e8f9f7 148 */
<> 144:ef7eb2e8f9f7 149
<> 144:ef7eb2e8f9f7 150 /** @defgroup WWDG_Exported_Functions_Group1 Initialization and Configuration functions
<> 144:ef7eb2e8f9f7 151 * @brief Initialization and Configuration functions.
<> 144:ef7eb2e8f9f7 152 *
<> 144:ef7eb2e8f9f7 153 @verbatim
<> 144:ef7eb2e8f9f7 154 ==============================================================================
<> 144:ef7eb2e8f9f7 155 ##### Initialization and Configuration functions #####
<> 144:ef7eb2e8f9f7 156 ==============================================================================
<> 144:ef7eb2e8f9f7 157 [..]
<> 144:ef7eb2e8f9f7 158 This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 159 (+) Initialize and start the WWDG according to the specified parameters
<> 144:ef7eb2e8f9f7 160 in the WWDG_InitTypeDef of associated handle.
<> 144:ef7eb2e8f9f7 161 (+) Initialize the WWDG MSP.
<> 144:ef7eb2e8f9f7 162
<> 144:ef7eb2e8f9f7 163 @endverbatim
<> 144:ef7eb2e8f9f7 164 * @{
<> 144:ef7eb2e8f9f7 165 */
<> 144:ef7eb2e8f9f7 166
<> 144:ef7eb2e8f9f7 167 /**
<> 144:ef7eb2e8f9f7 168 * @brief Initialize the WWDG according to the specified.
<> 144:ef7eb2e8f9f7 169 * parameters in the WWDG_InitTypeDef of associated handle.
<> 144:ef7eb2e8f9f7 170 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 171 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 172 * @retval HAL status
<> 144:ef7eb2e8f9f7 173 */
<> 144:ef7eb2e8f9f7 174 HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 175 {
<> 144:ef7eb2e8f9f7 176 /* Check the WWDG handle allocation */
<> 144:ef7eb2e8f9f7 177 if(hwwdg == NULL)
<> 144:ef7eb2e8f9f7 178 {
<> 144:ef7eb2e8f9f7 179 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 180 }
<> 144:ef7eb2e8f9f7 181
<> 144:ef7eb2e8f9f7 182 /* Check the parameters */
<> 144:ef7eb2e8f9f7 183 assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
<> 144:ef7eb2e8f9f7 184 assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
<> 144:ef7eb2e8f9f7 185 assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
<> 144:ef7eb2e8f9f7 186 assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
<> 144:ef7eb2e8f9f7 187 assert_param(IS_WWDG_EWI_MODE(hwwdg->Init.EWIMode));
<> 144:ef7eb2e8f9f7 188
<> 144:ef7eb2e8f9f7 189 /* Init the low level hardware */
<> 144:ef7eb2e8f9f7 190 HAL_WWDG_MspInit(hwwdg);
<> 144:ef7eb2e8f9f7 191
<> 144:ef7eb2e8f9f7 192 /* Set WWDG Counter */
<> 144:ef7eb2e8f9f7 193 WRITE_REG(hwwdg->Instance->CR, (WWDG_CR_WDGA | hwwdg->Init.Counter));
<> 144:ef7eb2e8f9f7 194
<> 144:ef7eb2e8f9f7 195 /* Set WWDG Prescaler and Window */
<> 144:ef7eb2e8f9f7 196 WRITE_REG(hwwdg->Instance->CFR, (hwwdg->Init.EWIMode | hwwdg->Init.Prescaler | hwwdg->Init.Window));
<> 144:ef7eb2e8f9f7 197
<> 144:ef7eb2e8f9f7 198 /* Return function status */
<> 144:ef7eb2e8f9f7 199 return HAL_OK;
<> 144:ef7eb2e8f9f7 200 }
<> 144:ef7eb2e8f9f7 201
<> 144:ef7eb2e8f9f7 202
<> 144:ef7eb2e8f9f7 203 /**
<> 144:ef7eb2e8f9f7 204 * @brief Initialize the WWDG MSP.
<> 144:ef7eb2e8f9f7 205 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 206 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 207 * @note When rewriting this function in user file, mechanism may be added
<> 144:ef7eb2e8f9f7 208 * to avoid multiple initialize when HAL_WWDG_Init function is called
<> 144:ef7eb2e8f9f7 209 * again to change parameters.
<> 144:ef7eb2e8f9f7 210 * @retval None
<> 144:ef7eb2e8f9f7 211 */
<> 144:ef7eb2e8f9f7 212 __weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 213 {
<> 144:ef7eb2e8f9f7 214 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 215 UNUSED(hwwdg);
<> 144:ef7eb2e8f9f7 216
<> 144:ef7eb2e8f9f7 217 /* NOTE: This function should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 218 the HAL_WWDG_MspInit could be implemented in the user file
<> 144:ef7eb2e8f9f7 219 */
<> 144:ef7eb2e8f9f7 220 }
<> 144:ef7eb2e8f9f7 221
<> 144:ef7eb2e8f9f7 222 /**
<> 144:ef7eb2e8f9f7 223 * @}
<> 144:ef7eb2e8f9f7 224 */
<> 144:ef7eb2e8f9f7 225
<> 144:ef7eb2e8f9f7 226 /** @defgroup WWDG_Exported_Functions_Group2 IO operation functions
<> 144:ef7eb2e8f9f7 227 * @brief IO operation functions
<> 144:ef7eb2e8f9f7 228 *
<> 144:ef7eb2e8f9f7 229 @verbatim
<> 144:ef7eb2e8f9f7 230 ==============================================================================
<> 144:ef7eb2e8f9f7 231 ##### IO operation functions #####
<> 144:ef7eb2e8f9f7 232 ==============================================================================
<> 144:ef7eb2e8f9f7 233 [..]
<> 144:ef7eb2e8f9f7 234 This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 235 (+) Refresh the WWDG.
<> 144:ef7eb2e8f9f7 236 (+) Handle WWDG interrupt request and associated function callback.
<> 144:ef7eb2e8f9f7 237
<> 144:ef7eb2e8f9f7 238 @endverbatim
<> 144:ef7eb2e8f9f7 239 * @{
<> 144:ef7eb2e8f9f7 240 */
<> 144:ef7eb2e8f9f7 241
<> 144:ef7eb2e8f9f7 242 /**
<> 144:ef7eb2e8f9f7 243 * @brief Refresh the WWDG.
<> 144:ef7eb2e8f9f7 244 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 245 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 246 * @retval HAL status
<> 144:ef7eb2e8f9f7 247 */
<> 144:ef7eb2e8f9f7 248 HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 249 {
<> 144:ef7eb2e8f9f7 250 /* Write to WWDG CR the WWDG Counter value to refresh with */
<> 144:ef7eb2e8f9f7 251 WRITE_REG(hwwdg->Instance->CR, (hwwdg->Init.Counter));
<> 144:ef7eb2e8f9f7 252
<> 144:ef7eb2e8f9f7 253 /* Return function status */
<> 144:ef7eb2e8f9f7 254 return HAL_OK;
<> 144:ef7eb2e8f9f7 255 }
<> 144:ef7eb2e8f9f7 256
<> 144:ef7eb2e8f9f7 257 /**
<> 144:ef7eb2e8f9f7 258 * @brief Handle WWDG interrupt request.
<> 144:ef7eb2e8f9f7 259 * @note The Early Wakeup Interrupt (EWI) can be used if specific safety operations
<> 144:ef7eb2e8f9f7 260 * or data logging must be performed before the actual reset is generated.
<> 144:ef7eb2e8f9f7 261 * The EWI interrupt is enabled by calling HAL_WWDG_Init function with
<> 144:ef7eb2e8f9f7 262 * EWIMode set to WWDG_EWI_ENABLE.
<> 144:ef7eb2e8f9f7 263 * When the downcounter reaches the value 0x40, and EWI interrupt is
<> 144:ef7eb2e8f9f7 264 * generated and the corresponding Interrupt Service Routine (ISR) can
<> 144:ef7eb2e8f9f7 265 * be used to trigger specific actions (such as communications or data
<> 144:ef7eb2e8f9f7 266 * logging), before resetting the device.
<> 144:ef7eb2e8f9f7 267 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 268 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 269 * @retval None
<> 144:ef7eb2e8f9f7 270 */
<> 144:ef7eb2e8f9f7 271 void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 272 {
<> 144:ef7eb2e8f9f7 273 /* Check if Early Wakeup Interrupt is enable */
<> 144:ef7eb2e8f9f7 274 if(__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET)
<> 144:ef7eb2e8f9f7 275 {
<> 144:ef7eb2e8f9f7 276 /* Check if WWDG Early Wakeup Interrupt occurred */
<> 144:ef7eb2e8f9f7 277 if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
<> 144:ef7eb2e8f9f7 278 {
<> 144:ef7eb2e8f9f7 279 /* Clear the WWDG Early Wakeup flag */
<> 144:ef7eb2e8f9f7 280 __HAL_WWDG_CLEAR_FLAG(hwwdg, WWDG_FLAG_EWIF);
<> 144:ef7eb2e8f9f7 281
<> 144:ef7eb2e8f9f7 282 /* Early Wakeup callback */
<> 144:ef7eb2e8f9f7 283 HAL_WWDG_EarlyWakeupCallback(hwwdg);
<> 144:ef7eb2e8f9f7 284 }
<> 144:ef7eb2e8f9f7 285 }
<> 144:ef7eb2e8f9f7 286 }
<> 144:ef7eb2e8f9f7 287
<> 144:ef7eb2e8f9f7 288
<> 144:ef7eb2e8f9f7 289 /**
<> 144:ef7eb2e8f9f7 290 * @brief WWDG Early Wakeup callback.
<> 144:ef7eb2e8f9f7 291 * @param hwwdg pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 292 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 293 * @retval None
<> 144:ef7eb2e8f9f7 294 */
<> 144:ef7eb2e8f9f7 295 __weak void HAL_WWDG_EarlyWakeupCallback(WWDG_HandleTypeDef* hwwdg)
<> 144:ef7eb2e8f9f7 296 {
<> 144:ef7eb2e8f9f7 297 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 298 UNUSED(hwwdg);
<> 144:ef7eb2e8f9f7 299
<> 144:ef7eb2e8f9f7 300 /* NOTE: This function should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 301 the HAL_WWDG_EarlyWakeupCallback could be implemented in the user file
<> 144:ef7eb2e8f9f7 302 */
<> 144:ef7eb2e8f9f7 303 }
<> 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
<> 144:ef7eb2e8f9f7 313 #endif /* HAL_WWDG_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 314 /**
<> 144:ef7eb2e8f9f7 315 * @}
<> 144:ef7eb2e8f9f7 316 */
<> 144:ef7eb2e8f9f7 317
<> 144:ef7eb2e8f9f7 318 /**
<> 144:ef7eb2e8f9f7 319 * @}
<> 144:ef7eb2e8f9f7 320 */
<> 144:ef7eb2e8f9f7 321
<> 144:ef7eb2e8f9f7 322 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/