Frederick Huang / mbed-STM32L452

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Dependents:   STM32L452_Nucleo_ticker

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targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_wwdg.c@182:59ec31722650, 2017-12-15 (annotated)

Committer:
Frederick_H
Date:
Fri Dec 15 08:17:23 2017 +0000
Revision:
182:59ec31722650
Parent:
151:5eaa88a5bcc7 
Modify hal_tick.h of TARGET_STM32L476xG

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32l0xx_hal_wwdg.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 151:5eaa88a5bcc7 5 * @version V1.7.0
<> 151:5eaa88a5bcc7 6 * @date 31-May-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 de-initialization functions
<> 144:ef7eb2e8f9f7 11 * + IO operation functions
<> 144:ef7eb2e8f9f7 12 * + Peripheral State functions
<> 144:ef7eb2e8f9f7 13 @verbatim
<> 144:ef7eb2e8f9f7 14 ==============================================================================
<> 144:ef7eb2e8f9f7 15 ##### WWDG specific features #####
<> 144:ef7eb2e8f9f7 16 ==============================================================================
<> 144:ef7eb2e8f9f7 17 [..]
<> 144:ef7eb2e8f9f7 18 Once enabled the WWDG generates a system reset on expiry of a programmed
<> 144:ef7eb2e8f9f7 19 time period, unless the program refreshes the counter (downcounter)
<> 144:ef7eb2e8f9f7 20 before reaching 0x3F value (i.e. a reset is generated when the counter
<> 144:ef7eb2e8f9f7 21 value rolls over from 0x40 to 0x3F).
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 (+) An MCU reset is also generated if the counter value is refreshed
<> 144:ef7eb2e8f9f7 24 before the counter has reached the refresh window value. This
<> 144:ef7eb2e8f9f7 25 implies that the counter must be refreshed in a limited window.
<> 144:ef7eb2e8f9f7 26 (+) Once enabled the WWDG cannot be disabled except by a system reset.
<> 144:ef7eb2e8f9f7 27 (+) WWDGRST flag in RCC_CSR register can be used to inform when a WWDG
<> 144:ef7eb2e8f9f7 28 reset occurs.
<> 144:ef7eb2e8f9f7 29 (+) The WWDG counter input clock is derived from the APB clock divided
<> 144:ef7eb2e8f9f7 30 by a programmable prescaler.
<> 144:ef7eb2e8f9f7 31 (+) WWDG counter clock = PCLK1 / Prescaler
<> 144:ef7eb2e8f9f7 32 WWDG timeout = (WWDG counter clock) * (counter value)
<> 144:ef7eb2e8f9f7 33 (+) Min-max timeout value @32 MHz(PCLK1): ~128.0 us / ~65.54 ms
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 ##### How to use this driver #####
<> 144:ef7eb2e8f9f7 37 ==============================================================================
<> 144:ef7eb2e8f9f7 38 [..]
<> 144:ef7eb2e8f9f7 39 (+) Enable WWDG APB1 clock using __HAL_RCC_WWDG_CLK_ENABLE().
<> 144:ef7eb2e8f9f7 40 (+) Set the WWDG prescaler, refresh window and counter value
<> 144:ef7eb2e8f9f7 41 using HAL_WWDG_Init() function.
<> 144:ef7eb2e8f9f7 42 (+) Start the WWDG using HAL_WWDG_Start() function.
<> 144:ef7eb2e8f9f7 43 When the WWDG is enabled the counter value should be configured to
<> 144:ef7eb2e8f9f7 44 a value greater than 0x40 to prevent generating an immediate reset.
<> 144:ef7eb2e8f9f7 45 (+) Optionally you can enable the Early Wakeup Interrupt (EWI) which is
<> 144:ef7eb2e8f9f7 46 generated when the counter reaches 0x40, and then start the WWDG using
<> 144:ef7eb2e8f9f7 47 HAL_WWDG_Start_IT().
<> 144:ef7eb2e8f9f7 48 Once enabled, EWI interrupt cannot be disabled except by a system reset.
<> 144:ef7eb2e8f9f7 49 (+) Then the application program must refresh the WWDG counter at regular
<> 144:ef7eb2e8f9f7 50 intervals during normal operation to prevent an MCU reset, using
<> 144:ef7eb2e8f9f7 51 HAL_WWDG_Refresh() function. This operation must occur only when
<> 144:ef7eb2e8f9f7 52 the counter is lower than the refresh window value already programmed.
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 *** WWDG HAL driver macros list ***
<> 144:ef7eb2e8f9f7 55 ==================================
<> 144:ef7eb2e8f9f7 56 [..]
<> 144:ef7eb2e8f9f7 57 Below the list of most used macros in WWDG HAL driver.
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59 (+) __HAL_WWDG_ENABLE: Enable the WWDG peripheral
<> 144:ef7eb2e8f9f7 60 (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status
<> 144:ef7eb2e8f9f7 61 (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags
<> 144:ef7eb2e8f9f7 62 (+) __HAL_WWDG_ENABLE_IT: Enables the WWDG early wakeup interrupt
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 @endverbatim
<> 144:ef7eb2e8f9f7 65 ******************************************************************************
<> 144:ef7eb2e8f9f7 66 * @attention
<> 144:ef7eb2e8f9f7 67 *
<> 144:ef7eb2e8f9f7 68 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 69 *
<> 144:ef7eb2e8f9f7 70 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 71 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 72 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 73 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 74 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 75 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 76 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 77 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 78 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 79 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 80 *
<> 144:ef7eb2e8f9f7 81 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 82 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 83 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 84 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 85 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 86 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 87 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 88 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 89 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 90 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 91 *
<> 144:ef7eb2e8f9f7 92 ******************************************************************************
<> 144:ef7eb2e8f9f7 93 */
<> 144:ef7eb2e8f9f7 94
<> 144:ef7eb2e8f9f7 95 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 96 #include "stm32l0xx_hal.h"
<> 144:ef7eb2e8f9f7 97
<> 144:ef7eb2e8f9f7 98 /** @addtogroup STM32L0xx_HAL_Driver
<> 144:ef7eb2e8f9f7 99 * @{
<> 144:ef7eb2e8f9f7 100 */
<> 144:ef7eb2e8f9f7 101
<> 144:ef7eb2e8f9f7 102 #ifdef HAL_WWDG_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 /** @addtogroup WWDG
<> 144:ef7eb2e8f9f7 105 * @brief WWDG HAL module driver.
<> 144:ef7eb2e8f9f7 106 * @{
<> 144:ef7eb2e8f9f7 107 */
<> 144:ef7eb2e8f9f7 108
<> 144:ef7eb2e8f9f7 109
<> 144:ef7eb2e8f9f7 110 /** @addtogroup WWDG_Exported_Functions WWDG Exported Functions
<> 144:ef7eb2e8f9f7 111 * @{
<> 144:ef7eb2e8f9f7 112 */
<> 144:ef7eb2e8f9f7 113
<> 144:ef7eb2e8f9f7 114 /** @addtogroup WWDG_Exported_Functions_Group1
<> 144:ef7eb2e8f9f7 115 * @brief Initialization and Configuration functions.
<> 144:ef7eb2e8f9f7 116 *
<> 144:ef7eb2e8f9f7 117 @verbatim
<> 144:ef7eb2e8f9f7 118 ==============================================================================
<> 144:ef7eb2e8f9f7 119 ##### Initialization and de-initialization functions #####
<> 144:ef7eb2e8f9f7 120 ==============================================================================
<> 144:ef7eb2e8f9f7 121 [..]
<> 144:ef7eb2e8f9f7 122 This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 123 (+) Initialize the WWDG according to the specified parameters
<> 144:ef7eb2e8f9f7 124 in the WWDG_InitTypeDef and create the associated handle
<> 144:ef7eb2e8f9f7 125 (+) DeInitialize the WWDG peripheral
<> 144:ef7eb2e8f9f7 126 (+) Initialize the WWDG MSP
<> 144:ef7eb2e8f9f7 127 (+) DeInitialize the WWDG MSP
<> 144:ef7eb2e8f9f7 128
<> 144:ef7eb2e8f9f7 129 @endverbatim
<> 144:ef7eb2e8f9f7 130 * @{
<> 144:ef7eb2e8f9f7 131 */
<> 144:ef7eb2e8f9f7 132
<> 144:ef7eb2e8f9f7 133 /**
<> 144:ef7eb2e8f9f7 134 * @brief Initializes the WWDG according to the specified
<> 144:ef7eb2e8f9f7 135 * parameters in the WWDG_InitTypeDef and creates the associated handle.
<> 144:ef7eb2e8f9f7 136 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 137 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 138 * @retval HAL status
<> 144:ef7eb2e8f9f7 139 */
<> 144:ef7eb2e8f9f7 140 HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 141 {
<> 144:ef7eb2e8f9f7 142
<> 144:ef7eb2e8f9f7 143 /* Check the WWDG handle allocation */
<> 144:ef7eb2e8f9f7 144 if(hwwdg == NULL)
<> 144:ef7eb2e8f9f7 145 {
<> 144:ef7eb2e8f9f7 146 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 147 }
<> 144:ef7eb2e8f9f7 148
<> 144:ef7eb2e8f9f7 149 /* Check the parameters */
<> 144:ef7eb2e8f9f7 150 assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
<> 144:ef7eb2e8f9f7 151 assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
<> 144:ef7eb2e8f9f7 152 assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
<> 144:ef7eb2e8f9f7 153 assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
<> 144:ef7eb2e8f9f7 154
<> 144:ef7eb2e8f9f7 155 if(hwwdg->State == HAL_WWDG_STATE_RESET)
<> 144:ef7eb2e8f9f7 156 {
<> 144:ef7eb2e8f9f7 157 /* Allocate lock resource and initialize it */
<> 144:ef7eb2e8f9f7 158 hwwdg->Lock = HAL_UNLOCKED;
<> 144:ef7eb2e8f9f7 159
<> 144:ef7eb2e8f9f7 160 /* Init the low level hardware */
<> 144:ef7eb2e8f9f7 161 HAL_WWDG_MspInit(hwwdg);
<> 144:ef7eb2e8f9f7 162 }
<> 144:ef7eb2e8f9f7 163
<> 144:ef7eb2e8f9f7 164 /* Take lock and change peripheral state */
<> 144:ef7eb2e8f9f7 165 __HAL_LOCK(hwwdg);
<> 144:ef7eb2e8f9f7 166 hwwdg->State = HAL_WWDG_STATE_BUSY;
<> 144:ef7eb2e8f9f7 167
<> 144:ef7eb2e8f9f7 168 /* Set WWDG Prescaler and Window and Counter*/
<> 144:ef7eb2e8f9f7 169 MODIFY_REG(hwwdg->Instance->CFR, (WWDG_CFR_WDGTB | WWDG_CFR_W), (hwwdg->Init.Prescaler | hwwdg->Init.Window));
<> 144:ef7eb2e8f9f7 170 MODIFY_REG(hwwdg->Instance->CR, WWDG_CR_T, hwwdg->Init.Counter);
<> 144:ef7eb2e8f9f7 171
<> 144:ef7eb2e8f9f7 172 /* Change peripheral state and release lock*/
<> 144:ef7eb2e8f9f7 173 hwwdg->State = HAL_WWDG_STATE_READY;
<> 144:ef7eb2e8f9f7 174 __HAL_UNLOCK(hwwdg);
<> 144:ef7eb2e8f9f7 175
<> 144:ef7eb2e8f9f7 176 /* Return function status */
<> 144:ef7eb2e8f9f7 177 return HAL_OK;
<> 144:ef7eb2e8f9f7 178 }
<> 144:ef7eb2e8f9f7 179
<> 144:ef7eb2e8f9f7 180 /**
<> 144:ef7eb2e8f9f7 181 * @brief DeInitializes the WWDG peripheral.
<> 144:ef7eb2e8f9f7 182 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 183 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 184 * @retval HAL status
<> 144:ef7eb2e8f9f7 185 */
<> 144:ef7eb2e8f9f7 186 HAL_StatusTypeDef HAL_WWDG_DeInit(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 187 {
<> 144:ef7eb2e8f9f7 188 /* Check the parameters */
<> 144:ef7eb2e8f9f7 189 assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
<> 144:ef7eb2e8f9f7 190
<> 144:ef7eb2e8f9f7 191 /* Take lock and change peripheral state */
<> 144:ef7eb2e8f9f7 192 __HAL_LOCK(hwwdg);
<> 144:ef7eb2e8f9f7 193 hwwdg->State = HAL_WWDG_STATE_BUSY;
<> 144:ef7eb2e8f9f7 194
<> 144:ef7eb2e8f9f7 195 /* DeInit the low level hardware */
<> 144:ef7eb2e8f9f7 196 HAL_WWDG_MspDeInit(hwwdg);
<> 144:ef7eb2e8f9f7 197
<> 144:ef7eb2e8f9f7 198 /* Reset WWDG Control, configuration and status register */
<> 151:5eaa88a5bcc7 199 MODIFY_REG(hwwdg->Instance->CR, (WWDG_CR_T | WWDG_CR_WDGA),0x0000007FU);
<> 151:5eaa88a5bcc7 200 MODIFY_REG(hwwdg->Instance->CFR, (WWDG_CFR_WDGTB | WWDG_CFR_W | WWDG_CFR_EWI),0x0000007FU);
<> 151:5eaa88a5bcc7 201 MODIFY_REG(hwwdg->Instance->SR,WWDG_SR_EWIF,0x0U);
<> 144:ef7eb2e8f9f7 202
<> 144:ef7eb2e8f9f7 203 /* Change peripheral state and release lock*/
<> 144:ef7eb2e8f9f7 204 hwwdg->State = HAL_WWDG_STATE_RESET;
<> 144:ef7eb2e8f9f7 205 __HAL_UNLOCK(hwwdg);
<> 144:ef7eb2e8f9f7 206
<> 144:ef7eb2e8f9f7 207 /* Return function status */
<> 144:ef7eb2e8f9f7 208 return HAL_OK;
<> 144:ef7eb2e8f9f7 209 }
<> 144:ef7eb2e8f9f7 210
<> 144:ef7eb2e8f9f7 211 /**
<> 144:ef7eb2e8f9f7 212 * @brief Initializes the WWDG MSP.
<> 144:ef7eb2e8f9f7 213 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 214 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 215 * @retval None
<> 144:ef7eb2e8f9f7 216 */
<> 144:ef7eb2e8f9f7 217 __weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 218 {
<> 144:ef7eb2e8f9f7 219 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 220 UNUSED(hwwdg);
<> 144:ef7eb2e8f9f7 221
<> 144:ef7eb2e8f9f7 222 /* NOTE: This function Should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 223 the HAL_WWDG_MspInit could be implemented in the user file
<> 144:ef7eb2e8f9f7 224 */
<> 144:ef7eb2e8f9f7 225 }
<> 144:ef7eb2e8f9f7 226
<> 144:ef7eb2e8f9f7 227 /**
<> 144:ef7eb2e8f9f7 228 * @brief DeInitializes the WWDG MSP.
<> 144:ef7eb2e8f9f7 229 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 230 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 231 * @retval None
<> 144:ef7eb2e8f9f7 232 */
<> 144:ef7eb2e8f9f7 233 __weak void HAL_WWDG_MspDeInit(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 234 {
<> 144:ef7eb2e8f9f7 235 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 236 UNUSED(hwwdg);
<> 144:ef7eb2e8f9f7 237
<> 144:ef7eb2e8f9f7 238 /* NOTE: This function Should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 239 the HAL_WWDG_MspDeInit could be implemented in the user file
<> 144:ef7eb2e8f9f7 240 */
<> 144:ef7eb2e8f9f7 241 }
<> 144:ef7eb2e8f9f7 242
<> 144:ef7eb2e8f9f7 243 /**
<> 144:ef7eb2e8f9f7 244 * @}
<> 144:ef7eb2e8f9f7 245 */
<> 144:ef7eb2e8f9f7 246
<> 144:ef7eb2e8f9f7 247 /** @addtogroup WWDG_Exported_Functions_Group2
<> 144:ef7eb2e8f9f7 248 * @brief IO operation functions
<> 144:ef7eb2e8f9f7 249 *
<> 144:ef7eb2e8f9f7 250 @verbatim
<> 144:ef7eb2e8f9f7 251 ==============================================================================
<> 144:ef7eb2e8f9f7 252 ##### IO operation functions #####
<> 144:ef7eb2e8f9f7 253 ==============================================================================
<> 144:ef7eb2e8f9f7 254 [..]
<> 144:ef7eb2e8f9f7 255 This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 256 (+) Start the WWDG.
<> 144:ef7eb2e8f9f7 257 (+) Refresh the WWDG.
<> 144:ef7eb2e8f9f7 258 (+) Handle WWDG interrupt request.
<> 144:ef7eb2e8f9f7 259
<> 144:ef7eb2e8f9f7 260 @endverbatim
<> 144:ef7eb2e8f9f7 261 * @{
<> 144:ef7eb2e8f9f7 262 */
<> 144:ef7eb2e8f9f7 263
<> 144:ef7eb2e8f9f7 264 /**
<> 144:ef7eb2e8f9f7 265 * @brief Starts the WWDG.
<> 144:ef7eb2e8f9f7 266 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 267 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 268 * @retval HAL status
<> 144:ef7eb2e8f9f7 269 */
<> 144:ef7eb2e8f9f7 270 HAL_StatusTypeDef HAL_WWDG_Start(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 271 {
<> 144:ef7eb2e8f9f7 272 /* Take lock and change peripheral state */
<> 144:ef7eb2e8f9f7 273 __HAL_LOCK(hwwdg);
<> 144:ef7eb2e8f9f7 274 hwwdg->State = HAL_WWDG_STATE_BUSY;
<> 144:ef7eb2e8f9f7 275
<> 144:ef7eb2e8f9f7 276 /* Enable the peripheral */
<> 144:ef7eb2e8f9f7 277 __HAL_WWDG_ENABLE(hwwdg);
<> 144:ef7eb2e8f9f7 278
<> 144:ef7eb2e8f9f7 279 /* Change peripheral state and release lock*/
<> 144:ef7eb2e8f9f7 280 hwwdg->State = HAL_WWDG_STATE_READY;
<> 144:ef7eb2e8f9f7 281 __HAL_UNLOCK(hwwdg);
<> 144:ef7eb2e8f9f7 282
<> 144:ef7eb2e8f9f7 283 /* Return function status */
<> 144:ef7eb2e8f9f7 284 return HAL_OK;
<> 144:ef7eb2e8f9f7 285 }
<> 144:ef7eb2e8f9f7 286
<> 144:ef7eb2e8f9f7 287 /**
<> 144:ef7eb2e8f9f7 288 * @brief Starts the WWDG with interrupt enabled.
<> 144:ef7eb2e8f9f7 289 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 290 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 291 * @retval HAL status
<> 144:ef7eb2e8f9f7 292 */
<> 144:ef7eb2e8f9f7 293 HAL_StatusTypeDef HAL_WWDG_Start_IT(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 294 {
<> 144:ef7eb2e8f9f7 295 /* Take lock and change peripheral state */
<> 144:ef7eb2e8f9f7 296 __HAL_LOCK(hwwdg);
<> 144:ef7eb2e8f9f7 297 hwwdg->State = HAL_WWDG_STATE_BUSY;
<> 144:ef7eb2e8f9f7 298
<> 144:ef7eb2e8f9f7 299 /* Enable the Early Wakeup Interrupt */
<> 144:ef7eb2e8f9f7 300 __HAL_WWDG_ENABLE_IT(hwwdg,WWDG_IT_EWI);
<> 144:ef7eb2e8f9f7 301
<> 144:ef7eb2e8f9f7 302 /* Enable the peripheral */
<> 144:ef7eb2e8f9f7 303 __HAL_WWDG_ENABLE(hwwdg);
<> 144:ef7eb2e8f9f7 304
<> 144:ef7eb2e8f9f7 305 /* Change peripheral state and release lock*/
<> 144:ef7eb2e8f9f7 306 hwwdg->State = HAL_WWDG_STATE_READY;
<> 144:ef7eb2e8f9f7 307 __HAL_UNLOCK(hwwdg);
<> 144:ef7eb2e8f9f7 308
<> 144:ef7eb2e8f9f7 309 /* Return function status */
<> 144:ef7eb2e8f9f7 310 return HAL_OK;
<> 144:ef7eb2e8f9f7 311 }
<> 144:ef7eb2e8f9f7 312
<> 144:ef7eb2e8f9f7 313 /**
<> 144:ef7eb2e8f9f7 314 * @brief Refreshes the WWDG.
<> 144:ef7eb2e8f9f7 315 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 316 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 317 * @param Counter: value of counter to put in WWDG counter
<> 144:ef7eb2e8f9f7 318 * @retval HAL status
<> 144:ef7eb2e8f9f7 319 */
<> 144:ef7eb2e8f9f7 320 HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg, uint32_t Counter)
<> 144:ef7eb2e8f9f7 321 {
<> 144:ef7eb2e8f9f7 322
<> 144:ef7eb2e8f9f7 323 /* Check the parameters */
<> 144:ef7eb2e8f9f7 324 assert_param(IS_WWDG_COUNTER(Counter));
<> 144:ef7eb2e8f9f7 325
<> 144:ef7eb2e8f9f7 326 /* Write to WWDG CR the WWDG Counter value to refresh with */
<> 144:ef7eb2e8f9f7 327 MODIFY_REG(hwwdg->Instance->CR, (uint32_t)WWDG_CR_T, Counter);
<> 144:ef7eb2e8f9f7 328
<> 144:ef7eb2e8f9f7 329 /* Return function status */
<> 144:ef7eb2e8f9f7 330 return HAL_OK;
<> 144:ef7eb2e8f9f7 331 }
<> 144:ef7eb2e8f9f7 332
<> 144:ef7eb2e8f9f7 333 /**
<> 144:ef7eb2e8f9f7 334 * @brief Handles WWDG interrupt request.
<> 144:ef7eb2e8f9f7 335 * @note The Early Wakeup Interrupt (EWI) can be used if specific safety operations
<> 144:ef7eb2e8f9f7 336 * or data logging must be performed before the actual reset is generated.
<> 144:ef7eb2e8f9f7 337 * The EWI interrupt is enabled using __HAL_WWDG_ENABLE_IT() macro.
<> 144:ef7eb2e8f9f7 338 * When the downcounter reaches the value 0x40, and EWI interrupt is
<> 144:ef7eb2e8f9f7 339 * generated and the corresponding Interrupt Service Routine (ISR) can
<> 144:ef7eb2e8f9f7 340 * be used to trigger specific actions (such as communications or data
<> 144:ef7eb2e8f9f7 341 * logging), before resetting the device.
<> 144:ef7eb2e8f9f7 342 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 343 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 344 * @retval None
<> 144:ef7eb2e8f9f7 345 */
<> 144:ef7eb2e8f9f7 346 void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 347 {
<> 144:ef7eb2e8f9f7 348 /* Check if Early Wakeup Interrupt is enable */
<> 144:ef7eb2e8f9f7 349 if(__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET)
<> 144:ef7eb2e8f9f7 350 {
<> 144:ef7eb2e8f9f7 351 /* Check if WWDG Early Wakeup Interrupt occurred */
<> 144:ef7eb2e8f9f7 352 if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
<> 144:ef7eb2e8f9f7 353 {
<> 144:ef7eb2e8f9f7 354 /* Early Wakeup callback */
<> 144:ef7eb2e8f9f7 355 HAL_WWDG_WakeupCallback(hwwdg);
<> 144:ef7eb2e8f9f7 356
<> 144:ef7eb2e8f9f7 357 /* Clear the WWDG Data Ready flag */
<> 144:ef7eb2e8f9f7 358 __HAL_WWDG_CLEAR_IT(hwwdg, WWDG_FLAG_EWIF);
<> 144:ef7eb2e8f9f7 359 }
<> 144:ef7eb2e8f9f7 360 }
<> 144:ef7eb2e8f9f7 361 }
<> 144:ef7eb2e8f9f7 362
<> 144:ef7eb2e8f9f7 363 /**
<> 144:ef7eb2e8f9f7 364 * @brief Early Wakeup WWDG callback.
<> 144:ef7eb2e8f9f7 365 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 366 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 367 * @retval None
<> 144:ef7eb2e8f9f7 368 */
<> 144:ef7eb2e8f9f7 369 __weak void HAL_WWDG_WakeupCallback(WWDG_HandleTypeDef* hwwdg)
<> 144:ef7eb2e8f9f7 370 {
<> 144:ef7eb2e8f9f7 371 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 372 UNUSED(hwwdg);
<> 144:ef7eb2e8f9f7 373 }
<> 144:ef7eb2e8f9f7 374
<> 144:ef7eb2e8f9f7 375 /**
<> 144:ef7eb2e8f9f7 376 * @}
<> 144:ef7eb2e8f9f7 377 */
<> 144:ef7eb2e8f9f7 378
<> 144:ef7eb2e8f9f7 379 /** @addtogroup WWDG_Exported_Functions_Group3
<> 144:ef7eb2e8f9f7 380 * @brief Peripheral State functions.
<> 144:ef7eb2e8f9f7 381 *
<> 144:ef7eb2e8f9f7 382 @verbatim
<> 144:ef7eb2e8f9f7 383 ==============================================================================
<> 144:ef7eb2e8f9f7 384 ##### Peripheral State functions #####
<> 144:ef7eb2e8f9f7 385 ==============================================================================
<> 144:ef7eb2e8f9f7 386 [..]
<> 144:ef7eb2e8f9f7 387 This subsection permits to get in run-time the status of the peripheral
<> 144:ef7eb2e8f9f7 388 and the data flow.
<> 144:ef7eb2e8f9f7 389
<> 144:ef7eb2e8f9f7 390 @endverbatim
<> 144:ef7eb2e8f9f7 391 * @{
<> 144:ef7eb2e8f9f7 392 */
<> 144:ef7eb2e8f9f7 393
<> 144:ef7eb2e8f9f7 394 /**
<> 144:ef7eb2e8f9f7 395 * @brief Returns the WWDG state.
<> 144:ef7eb2e8f9f7 396 * @param hwwdg : pointer to a WWDG_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 397 * the configuration information for the specified WWDG module.
<> 144:ef7eb2e8f9f7 398 * @retval HAL state
<> 144:ef7eb2e8f9f7 399 */
<> 144:ef7eb2e8f9f7 400 HAL_WWDG_StateTypeDef HAL_WWDG_GetState(WWDG_HandleTypeDef *hwwdg)
<> 144:ef7eb2e8f9f7 401 {
<> 144:ef7eb2e8f9f7 402 return hwwdg->State;
<> 144:ef7eb2e8f9f7 403 }
<> 144:ef7eb2e8f9f7 404
<> 144:ef7eb2e8f9f7 405 /**
<> 144:ef7eb2e8f9f7 406 * @}
<> 144:ef7eb2e8f9f7 407 */
<> 144:ef7eb2e8f9f7 408
<> 144:ef7eb2e8f9f7 409 /**
<> 144:ef7eb2e8f9f7 410 * @}
<> 144:ef7eb2e8f9f7 411 */
<> 144:ef7eb2e8f9f7 412
<> 144:ef7eb2e8f9f7 413 /**
<> 144:ef7eb2e8f9f7 414 * @}
<> 144:ef7eb2e8f9f7 415 */
<> 144:ef7eb2e8f9f7 416
<> 144:ef7eb2e8f9f7 417 #endif /* HAL_WWDG_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 418
<> 144:ef7eb2e8f9f7 419 /**
<> 144:ef7eb2e8f9f7 420 * @}
<> 144:ef7eb2e8f9f7 421 */
<> 144:ef7eb2e8f9f7 422
<> 144:ef7eb2e8f9f7 423 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
<> 144:ef7eb2e8f9f7 424