PHung Tung / DISCO-F746_WAV_PLAYER

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SRC_STM32F7/targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_wwdg.c@0:8ede47d38d10, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:37:21 2019 +0000
Revision:
0:8ede47d38d10
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phungductung 0:8ede47d38d10 1 /**
phungductung 0:8ede47d38d10 2 ******************************************************************************
phungductung 0:8ede47d38d10 3 * @file stm32f7xx_hal_wwdg.c
phungductung 0:8ede47d38d10 4 * @author MCD Application Team
phungductung 0:8ede47d38d10 5 * @version V1.0.4
phungductung 0:8ede47d38d10 6 * @date 09-December-2015
phungductung 0:8ede47d38d10 7 * @brief WWDG HAL module driver.
phungductung 0:8ede47d38d10 8 * This file provides firmware functions to manage the following
phungductung 0:8ede47d38d10 9 * functionalities of the Window Watchdog (WWDG) peripheral:
phungductung 0:8ede47d38d10 10 * + Initialization and de-initialization functions
phungductung 0:8ede47d38d10 11 * + IO operation functions
phungductung 0:8ede47d38d10 12 * + Peripheral State functions
phungductung 0:8ede47d38d10 13 @verbatim
phungductung 0:8ede47d38d10 14 ==============================================================================
phungductung 0:8ede47d38d10 15 ##### WWDG specific features #####
phungductung 0:8ede47d38d10 16 ==============================================================================
phungductung 0:8ede47d38d10 17 [..]
phungductung 0:8ede47d38d10 18 Once enabled the WWDG generates a system reset on expiry of a programmed
phungductung 0:8ede47d38d10 19 time period, unless the program refreshes the counter (down-counter)
phungductung 0:8ede47d38d10 20 before reaching 0x3F value (i.e. a reset is generated when the counter
phungductung 0:8ede47d38d10 21 value rolls over from 0x40 to 0x3F).
phungductung 0:8ede47d38d10 22
phungductung 0:8ede47d38d10 23 (+) An MCU reset is also generated if the counter value is refreshed
phungductung 0:8ede47d38d10 24 before the counter has reached the refresh window value. This
phungductung 0:8ede47d38d10 25 implies that the counter must be refreshed in a limited window.
phungductung 0:8ede47d38d10 26 (+) Once enabled the WWDG cannot be disabled except by a system reset.
phungductung 0:8ede47d38d10 27 (+) WWDGRST flag in RCC_CSR register can be used to inform when a WWDG
phungductung 0:8ede47d38d10 28 reset occurs.
phungductung 0:8ede47d38d10 29 (+) The WWDG counter input clock is derived from the APB clock divided
phungductung 0:8ede47d38d10 30 by a programmable prescaler.
phungductung 0:8ede47d38d10 31 (+) WWDG clock (Hz) = PCLK1 / (4096 * Prescaler)
phungductung 0:8ede47d38d10 32 (+) WWDG timeout (mS) = 1000 * Counter / WWDG clock
phungductung 0:8ede47d38d10 33 (+) WWDG Counter refresh is allowed between the following limits :
phungductung 0:8ede47d38d10 34 (++) min time (mS) = 1000 * (Counter - Window) / WWDG clock
phungductung 0:8ede47d38d10 35 (++) max time (mS) = 1000 * (Counter - 0x40) / WWDG clock
phungductung 0:8ede47d38d10 36
phungductung 0:8ede47d38d10 37 (+) Min-max timeout value at 50 MHz(PCLK1): 81.9 us / 41.9 ms
phungductung 0:8ede47d38d10 38
phungductung 0:8ede47d38d10 39
phungductung 0:8ede47d38d10 40 ##### How to use this driver #####
phungductung 0:8ede47d38d10 41 ==============================================================================
phungductung 0:8ede47d38d10 42 [..]
phungductung 0:8ede47d38d10 43 (+) Enable WWDG APB1 clock using __HAL_RCC_WWDG_CLK_ENABLE().
phungductung 0:8ede47d38d10 44 (+) Set the WWDG prescaler, refresh window and counter value
phungductung 0:8ede47d38d10 45 using HAL_WWDG_Init() function.
phungductung 0:8ede47d38d10 46 (+) Start the WWDG using HAL_WWDG_Start() function.
phungductung 0:8ede47d38d10 47 When the WWDG is enabled the counter value should be configured to
phungductung 0:8ede47d38d10 48 a value greater than 0x40 to prevent generating an immediate reset.
phungductung 0:8ede47d38d10 49 (+) Optionally you can enable the Early Wakeup Interrupt (EWI) which is
phungductung 0:8ede47d38d10 50 generated when the counter reaches 0x40, and then start the WWDG using
phungductung 0:8ede47d38d10 51 HAL_WWDG_Start_IT(). At EWI HAL_WWDG_WakeupCallback is executed and user can
phungductung 0:8ede47d38d10 52 add his own code by customization of function pointer HAL_WWDG_WakeupCallback
phungductung 0:8ede47d38d10 53 Once enabled, EWI interrupt cannot be disabled except by a system reset.
phungductung 0:8ede47d38d10 54 (+) Then the application program must refresh the WWDG counter at regular
phungductung 0:8ede47d38d10 55 intervals during normal operation to prevent an MCU reset, using
phungductung 0:8ede47d38d10 56 HAL_WWDG_Refresh() function. This operation must occur only when
phungductung 0:8ede47d38d10 57 the counter is lower than the refresh window value already programmed.
phungductung 0:8ede47d38d10 58
phungductung 0:8ede47d38d10 59 *** WWDG HAL driver macros list ***
phungductung 0:8ede47d38d10 60 ==================================
phungductung 0:8ede47d38d10 61 [..]
phungductung 0:8ede47d38d10 62 Below the list of most used macros in WWDG HAL driver.
phungductung 0:8ede47d38d10 63
phungductung 0:8ede47d38d10 64 (+) __HAL_WWDG_ENABLE: Enable the WWDG peripheral
phungductung 0:8ede47d38d10 65 (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status
phungductung 0:8ede47d38d10 66 (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags
phungductung 0:8ede47d38d10 67 (+) __HAL_WWDG_ENABLE_IT: Enables the WWDG early wake-up interrupt
phungductung 0:8ede47d38d10 68
phungductung 0:8ede47d38d10 69 @endverbatim
phungductung 0:8ede47d38d10 70 ******************************************************************************
phungductung 0:8ede47d38d10 71 * @attention
phungductung 0:8ede47d38d10 72 *
phungductung 0:8ede47d38d10 73 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
phungductung 0:8ede47d38d10 74 *
phungductung 0:8ede47d38d10 75 * Redistribution and use in source and binary forms, with or without modification,
phungductung 0:8ede47d38d10 76 * are permitted provided that the following conditions are met:
phungductung 0:8ede47d38d10 77 * 1. Redistributions of source code must retain the above copyright notice,
phungductung 0:8ede47d38d10 78 * this list of conditions and the following disclaimer.
phungductung 0:8ede47d38d10 79 * 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung 0:8ede47d38d10 80 * this list of conditions and the following disclaimer in the documentation
phungductung 0:8ede47d38d10 81 * and/or other materials provided with the distribution.
phungductung 0:8ede47d38d10 82 * 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung 0:8ede47d38d10 83 * may be used to endorse or promote products derived from this software
phungductung 0:8ede47d38d10 84 * without specific prior written permission.
phungductung 0:8ede47d38d10 85 *
phungductung 0:8ede47d38d10 86 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung 0:8ede47d38d10 87 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung 0:8ede47d38d10 88 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung 0:8ede47d38d10 89 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung 0:8ede47d38d10 90 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung 0:8ede47d38d10 91 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung 0:8ede47d38d10 92 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung 0:8ede47d38d10 93 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung 0:8ede47d38d10 94 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung 0:8ede47d38d10 95 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung 0:8ede47d38d10 96 *
phungductung 0:8ede47d38d10 97 ******************************************************************************
phungductung 0:8ede47d38d10 98 */
phungductung 0:8ede47d38d10 99
phungductung 0:8ede47d38d10 100 /* Includes ------------------------------------------------------------------*/
phungductung 0:8ede47d38d10 101 #include "stm32f7xx_hal.h"
phungductung 0:8ede47d38d10 102
phungductung 0:8ede47d38d10 103 /** @addtogroup STM32F7xx_HAL_Driver
phungductung 0:8ede47d38d10 104 * @{
phungductung 0:8ede47d38d10 105 */
phungductung 0:8ede47d38d10 106
phungductung 0:8ede47d38d10 107 /** @defgroup WWDG WWDG
phungductung 0:8ede47d38d10 108 * @brief WWDG HAL module driver.
phungductung 0:8ede47d38d10 109 * @{
phungductung 0:8ede47d38d10 110 */
phungductung 0:8ede47d38d10 111
phungductung 0:8ede47d38d10 112 #ifdef HAL_WWDG_MODULE_ENABLED
phungductung 0:8ede47d38d10 113
phungductung 0:8ede47d38d10 114 /* Private typedef -----------------------------------------------------------*/
phungductung 0:8ede47d38d10 115 /* Private define ------------------------------------------------------------*/
phungductung 0:8ede47d38d10 116 /* Private macro -------------------------------------------------------------*/
phungductung 0:8ede47d38d10 117 /* Private variables ---------------------------------------------------------*/
phungductung 0:8ede47d38d10 118 /* Private function prototypes -----------------------------------------------*/
phungductung 0:8ede47d38d10 119 /* Exported functions --------------------------------------------------------*/
phungductung 0:8ede47d38d10 120 /** @defgroup WWDG_Exported_Functions WWDG Exported Functions
phungductung 0:8ede47d38d10 121 * @{
phungductung 0:8ede47d38d10 122 */
phungductung 0:8ede47d38d10 123
phungductung 0:8ede47d38d10 124 /** @defgroup WWDG_Exported_Functions_Group1 Initialization and de-initialization functions
phungductung 0:8ede47d38d10 125 * @brief Initialization and Configuration functions.
phungductung 0:8ede47d38d10 126 *
phungductung 0:8ede47d38d10 127 @verbatim
phungductung 0:8ede47d38d10 128 ==============================================================================
phungductung 0:8ede47d38d10 129 ##### Initialization and de-initialization functions #####
phungductung 0:8ede47d38d10 130 ==============================================================================
phungductung 0:8ede47d38d10 131 [..]
phungductung 0:8ede47d38d10 132 This section provides functions allowing to:
phungductung 0:8ede47d38d10 133 (+) Initialize the WWDG according to the specified parameters
phungductung 0:8ede47d38d10 134 in the WWDG_InitTypeDef and create the associated handle
phungductung 0:8ede47d38d10 135 (+) DeInitialize the WWDG peripheral
phungductung 0:8ede47d38d10 136 (+) Initialize the WWDG MSP
phungductung 0:8ede47d38d10 137 (+) DeInitialize the WWDG MSP
phungductung 0:8ede47d38d10 138
phungductung 0:8ede47d38d10 139 @endverbatim
phungductung 0:8ede47d38d10 140 * @{
phungductung 0:8ede47d38d10 141 */
phungductung 0:8ede47d38d10 142
phungductung 0:8ede47d38d10 143 /**
phungductung 0:8ede47d38d10 144 * @brief Initializes the WWDG according to the specified
phungductung 0:8ede47d38d10 145 * parameters in the WWDG_InitTypeDef and creates the associated handle.
phungductung 0:8ede47d38d10 146 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 147 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 148 * @retval HAL status
phungductung 0:8ede47d38d10 149 */
phungductung 0:8ede47d38d10 150 HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 151 {
phungductung 0:8ede47d38d10 152 /* Check the WWDG handle allocation */
phungductung 0:8ede47d38d10 153 if(hwwdg == NULL)
phungductung 0:8ede47d38d10 154 {
phungductung 0:8ede47d38d10 155 return HAL_ERROR;
phungductung 0:8ede47d38d10 156 }
phungductung 0:8ede47d38d10 157
phungductung 0:8ede47d38d10 158 /* Check the parameters */
phungductung 0:8ede47d38d10 159 assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
phungductung 0:8ede47d38d10 160 assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler));
phungductung 0:8ede47d38d10 161 assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window));
phungductung 0:8ede47d38d10 162 assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter));
phungductung 0:8ede47d38d10 163
phungductung 0:8ede47d38d10 164 if(hwwdg->State == HAL_WWDG_STATE_RESET)
phungductung 0:8ede47d38d10 165 {
phungductung 0:8ede47d38d10 166 /* Allocate lock resource and initialize it */
phungductung 0:8ede47d38d10 167 hwwdg->Lock = HAL_UNLOCKED;
phungductung 0:8ede47d38d10 168 /* Init the low level hardware */
phungductung 0:8ede47d38d10 169 HAL_WWDG_MspInit(hwwdg);
phungductung 0:8ede47d38d10 170 }
phungductung 0:8ede47d38d10 171
phungductung 0:8ede47d38d10 172 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 173 hwwdg->State = HAL_WWDG_STATE_BUSY;
phungductung 0:8ede47d38d10 174
phungductung 0:8ede47d38d10 175 /* Set WWDG Prescaler and Window */
phungductung 0:8ede47d38d10 176 MODIFY_REG(hwwdg->Instance->CFR, (WWDG_CFR_WDGTB | WWDG_CFR_W), (hwwdg->Init.Prescaler | hwwdg->Init.Window));
phungductung 0:8ede47d38d10 177 /* Set WWDG Counter */
phungductung 0:8ede47d38d10 178 MODIFY_REG(hwwdg->Instance->CR, WWDG_CR_T, hwwdg->Init.Counter);
phungductung 0:8ede47d38d10 179
phungductung 0:8ede47d38d10 180 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 181 hwwdg->State = HAL_WWDG_STATE_READY;
phungductung 0:8ede47d38d10 182
phungductung 0:8ede47d38d10 183 /* Return function status */
phungductung 0:8ede47d38d10 184 return HAL_OK;
phungductung 0:8ede47d38d10 185 }
phungductung 0:8ede47d38d10 186
phungductung 0:8ede47d38d10 187 /**
phungductung 0:8ede47d38d10 188 * @brief DeInitializes the WWDG peripheral.
phungductung 0:8ede47d38d10 189 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 190 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 191 * @retval HAL status
phungductung 0:8ede47d38d10 192 */
phungductung 0:8ede47d38d10 193 HAL_StatusTypeDef HAL_WWDG_DeInit(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 194 {
phungductung 0:8ede47d38d10 195 /* Check the WWDG handle allocation */
phungductung 0:8ede47d38d10 196 if(hwwdg == NULL)
phungductung 0:8ede47d38d10 197 {
phungductung 0:8ede47d38d10 198 return HAL_ERROR;
phungductung 0:8ede47d38d10 199 }
phungductung 0:8ede47d38d10 200
phungductung 0:8ede47d38d10 201 /* Check the parameters */
phungductung 0:8ede47d38d10 202 assert_param(IS_WWDG_ALL_INSTANCE(hwwdg->Instance));
phungductung 0:8ede47d38d10 203
phungductung 0:8ede47d38d10 204 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 205 hwwdg->State = HAL_WWDG_STATE_BUSY;
phungductung 0:8ede47d38d10 206
phungductung 0:8ede47d38d10 207 /* DeInit the low level hardware */
phungductung 0:8ede47d38d10 208 HAL_WWDG_MspDeInit(hwwdg);
phungductung 0:8ede47d38d10 209
phungductung 0:8ede47d38d10 210 /* Reset WWDG Control register */
phungductung 0:8ede47d38d10 211 hwwdg->Instance->CR = (uint32_t)0x0000007F;
phungductung 0:8ede47d38d10 212
phungductung 0:8ede47d38d10 213 /* Reset WWDG Configuration register */
phungductung 0:8ede47d38d10 214 hwwdg->Instance->CFR = (uint32_t)0x0000007F;
phungductung 0:8ede47d38d10 215
phungductung 0:8ede47d38d10 216 /* Reset WWDG Status register */
phungductung 0:8ede47d38d10 217 hwwdg->Instance->SR = 0;
phungductung 0:8ede47d38d10 218
phungductung 0:8ede47d38d10 219 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 220 hwwdg->State = HAL_WWDG_STATE_RESET;
phungductung 0:8ede47d38d10 221
phungductung 0:8ede47d38d10 222 /* Release Lock */
phungductung 0:8ede47d38d10 223 __HAL_UNLOCK(hwwdg);
phungductung 0:8ede47d38d10 224
phungductung 0:8ede47d38d10 225 /* Return function status */
phungductung 0:8ede47d38d10 226 return HAL_OK;
phungductung 0:8ede47d38d10 227 }
phungductung 0:8ede47d38d10 228
phungductung 0:8ede47d38d10 229 /**
phungductung 0:8ede47d38d10 230 * @brief Initializes the WWDG MSP.
phungductung 0:8ede47d38d10 231 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 232 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 233 * @retval None
phungductung 0:8ede47d38d10 234 */
phungductung 0:8ede47d38d10 235 __weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 236 {
phungductung 0:8ede47d38d10 237 /* Prevent unused argument(s) compilation warning */
phungductung 0:8ede47d38d10 238 UNUSED(hwwdg);
phungductung 0:8ede47d38d10 239
phungductung 0:8ede47d38d10 240 /* NOTE: This function Should not be modified, when the callback is needed,
phungductung 0:8ede47d38d10 241 the HAL_WWDG_MspInit could be implemented in the user file
phungductung 0:8ede47d38d10 242 */
phungductung 0:8ede47d38d10 243 }
phungductung 0:8ede47d38d10 244
phungductung 0:8ede47d38d10 245 /**
phungductung 0:8ede47d38d10 246 * @brief DeInitializes the WWDG MSP.
phungductung 0:8ede47d38d10 247 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 248 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 249 * @retval None
phungductung 0:8ede47d38d10 250 */
phungductung 0:8ede47d38d10 251 __weak void HAL_WWDG_MspDeInit(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 252 {
phungductung 0:8ede47d38d10 253 /* Prevent unused argument(s) compilation warning */
phungductung 0:8ede47d38d10 254 UNUSED(hwwdg);
phungductung 0:8ede47d38d10 255
phungductung 0:8ede47d38d10 256 /* NOTE: This function Should not be modified, when the callback is needed,
phungductung 0:8ede47d38d10 257 the HAL_WWDG_MspDeInit could be implemented in the user file
phungductung 0:8ede47d38d10 258 */
phungductung 0:8ede47d38d10 259 }
phungductung 0:8ede47d38d10 260
phungductung 0:8ede47d38d10 261 /**
phungductung 0:8ede47d38d10 262 * @}
phungductung 0:8ede47d38d10 263 */
phungductung 0:8ede47d38d10 264
phungductung 0:8ede47d38d10 265 /** @defgroup WWDG_Exported_Functions_Group2 IO operation functions
phungductung 0:8ede47d38d10 266 * @brief IO operation functions
phungductung 0:8ede47d38d10 267 *
phungductung 0:8ede47d38d10 268 @verbatim
phungductung 0:8ede47d38d10 269 ==============================================================================
phungductung 0:8ede47d38d10 270 ##### IO operation functions #####
phungductung 0:8ede47d38d10 271 ==============================================================================
phungductung 0:8ede47d38d10 272 [..]
phungductung 0:8ede47d38d10 273 This section provides functions allowing to:
phungductung 0:8ede47d38d10 274 (+) Start the WWDG.
phungductung 0:8ede47d38d10 275 (+) Refresh the WWDG.
phungductung 0:8ede47d38d10 276 (+) Handle WWDG interrupt request.
phungductung 0:8ede47d38d10 277
phungductung 0:8ede47d38d10 278 @endverbatim
phungductung 0:8ede47d38d10 279 * @{
phungductung 0:8ede47d38d10 280 */
phungductung 0:8ede47d38d10 281
phungductung 0:8ede47d38d10 282 /**
phungductung 0:8ede47d38d10 283 * @brief Starts the WWDG.
phungductung 0:8ede47d38d10 284 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 285 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 286 * @retval HAL status
phungductung 0:8ede47d38d10 287 */
phungductung 0:8ede47d38d10 288 HAL_StatusTypeDef HAL_WWDG_Start(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 289 {
phungductung 0:8ede47d38d10 290 /* Process Locked */
phungductung 0:8ede47d38d10 291 __HAL_LOCK(hwwdg);
phungductung 0:8ede47d38d10 292
phungductung 0:8ede47d38d10 293 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 294 hwwdg->State = HAL_WWDG_STATE_BUSY;
phungductung 0:8ede47d38d10 295
phungductung 0:8ede47d38d10 296 /* Enable the peripheral */
phungductung 0:8ede47d38d10 297 __HAL_WWDG_ENABLE(hwwdg);
phungductung 0:8ede47d38d10 298
phungductung 0:8ede47d38d10 299 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 300 hwwdg->State = HAL_WWDG_STATE_READY;
phungductung 0:8ede47d38d10 301
phungductung 0:8ede47d38d10 302 /* Process Unlocked */
phungductung 0:8ede47d38d10 303 __HAL_UNLOCK(hwwdg);
phungductung 0:8ede47d38d10 304
phungductung 0:8ede47d38d10 305 /* Return function status */
phungductung 0:8ede47d38d10 306 return HAL_OK;
phungductung 0:8ede47d38d10 307 }
phungductung 0:8ede47d38d10 308
phungductung 0:8ede47d38d10 309 /**
phungductung 0:8ede47d38d10 310 * @brief Starts the WWDG with interrupt enabled.
phungductung 0:8ede47d38d10 311 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 312 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 313 * @retval HAL status
phungductung 0:8ede47d38d10 314 */
phungductung 0:8ede47d38d10 315 HAL_StatusTypeDef HAL_WWDG_Start_IT(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 316 {
phungductung 0:8ede47d38d10 317 /* Process Locked */
phungductung 0:8ede47d38d10 318 __HAL_LOCK(hwwdg);
phungductung 0:8ede47d38d10 319
phungductung 0:8ede47d38d10 320 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 321 hwwdg->State = HAL_WWDG_STATE_BUSY;
phungductung 0:8ede47d38d10 322
phungductung 0:8ede47d38d10 323 /* Enable the Early Wakeup Interrupt */
phungductung 0:8ede47d38d10 324 __HAL_WWDG_ENABLE_IT(hwwdg, WWDG_IT_EWI);
phungductung 0:8ede47d38d10 325
phungductung 0:8ede47d38d10 326 /* Enable the peripheral */
phungductung 0:8ede47d38d10 327 __HAL_WWDG_ENABLE(hwwdg);
phungductung 0:8ede47d38d10 328
phungductung 0:8ede47d38d10 329 /* Return function status */
phungductung 0:8ede47d38d10 330 return HAL_OK;
phungductung 0:8ede47d38d10 331 }
phungductung 0:8ede47d38d10 332
phungductung 0:8ede47d38d10 333 /**
phungductung 0:8ede47d38d10 334 * @brief Refreshes the WWDG.
phungductung 0:8ede47d38d10 335 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 336 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 337 * @param Counter: value of counter to put in WWDG counter
phungductung 0:8ede47d38d10 338 * @retval HAL status
phungductung 0:8ede47d38d10 339 */
phungductung 0:8ede47d38d10 340 HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg, uint32_t Counter)
phungductung 0:8ede47d38d10 341 {
phungductung 0:8ede47d38d10 342 /* Process Locked */
phungductung 0:8ede47d38d10 343 __HAL_LOCK(hwwdg);
phungductung 0:8ede47d38d10 344
phungductung 0:8ede47d38d10 345 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 346 hwwdg->State = HAL_WWDG_STATE_BUSY;
phungductung 0:8ede47d38d10 347
phungductung 0:8ede47d38d10 348 /* Check the parameters */
phungductung 0:8ede47d38d10 349 assert_param(IS_WWDG_COUNTER(Counter));
phungductung 0:8ede47d38d10 350
phungductung 0:8ede47d38d10 351 /* Write to WWDG CR the WWDG Counter value to refresh with */
phungductung 0:8ede47d38d10 352 MODIFY_REG(hwwdg->Instance->CR, (uint32_t)WWDG_CR_T, Counter);
phungductung 0:8ede47d38d10 353
phungductung 0:8ede47d38d10 354 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 355 hwwdg->State = HAL_WWDG_STATE_READY;
phungductung 0:8ede47d38d10 356
phungductung 0:8ede47d38d10 357 /* Process Unlocked */
phungductung 0:8ede47d38d10 358 __HAL_UNLOCK(hwwdg);
phungductung 0:8ede47d38d10 359
phungductung 0:8ede47d38d10 360 /* Return function status */
phungductung 0:8ede47d38d10 361 return HAL_OK;
phungductung 0:8ede47d38d10 362 }
phungductung 0:8ede47d38d10 363
phungductung 0:8ede47d38d10 364 /**
phungductung 0:8ede47d38d10 365 * @brief Handles WWDG interrupt request.
phungductung 0:8ede47d38d10 366 * @note The Early Wakeup Interrupt (EWI) can be used if specific safety operations
phungductung 0:8ede47d38d10 367 * or data logging must be performed before the actual reset is generated.
phungductung 0:8ede47d38d10 368 * The EWI interrupt is enabled using __HAL_WWDG_ENABLE_IT() macro.
phungductung 0:8ede47d38d10 369 * When the downcounter reaches the value 0x40, and EWI interrupt is
phungductung 0:8ede47d38d10 370 * generated and the corresponding Interrupt Service Routine (ISR) can
phungductung 0:8ede47d38d10 371 * be used to trigger specific actions (such as communications or data
phungductung 0:8ede47d38d10 372 * logging), before resetting the device.
phungductung 0:8ede47d38d10 373 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 374 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 375 * @retval None
phungductung 0:8ede47d38d10 376 */
phungductung 0:8ede47d38d10 377 void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 378 {
phungductung 0:8ede47d38d10 379 /* Check if Early Wakeup Interrupt is enable */
phungductung 0:8ede47d38d10 380 if(__HAL_WWDG_GET_IT_SOURCE(hwwdg, WWDG_IT_EWI) != RESET)
phungductung 0:8ede47d38d10 381 {
phungductung 0:8ede47d38d10 382 /* Check if WWDG Early Wakeup Interrupt occurred */
phungductung 0:8ede47d38d10 383 if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET)
phungductung 0:8ede47d38d10 384 {
phungductung 0:8ede47d38d10 385 /* Early Wakeup callback */
phungductung 0:8ede47d38d10 386 HAL_WWDG_WakeupCallback(hwwdg);
phungductung 0:8ede47d38d10 387
phungductung 0:8ede47d38d10 388 /* Change WWDG peripheral state */
phungductung 0:8ede47d38d10 389 hwwdg->State = HAL_WWDG_STATE_READY;
phungductung 0:8ede47d38d10 390
phungductung 0:8ede47d38d10 391 /* Clear the WWDG Early Wakeup flag */
phungductung 0:8ede47d38d10 392 __HAL_WWDG_CLEAR_FLAG(hwwdg, WWDG_FLAG_EWIF);
phungductung 0:8ede47d38d10 393
phungductung 0:8ede47d38d10 394 /* Process Unlocked */
phungductung 0:8ede47d38d10 395 __HAL_UNLOCK(hwwdg);
phungductung 0:8ede47d38d10 396 }
phungductung 0:8ede47d38d10 397 }
phungductung 0:8ede47d38d10 398 }
phungductung 0:8ede47d38d10 399
phungductung 0:8ede47d38d10 400 /**
phungductung 0:8ede47d38d10 401 * @brief Early Wakeup WWDG callback.
phungductung 0:8ede47d38d10 402 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 403 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 404 * @retval None
phungductung 0:8ede47d38d10 405 */
phungductung 0:8ede47d38d10 406 __weak void HAL_WWDG_WakeupCallback(WWDG_HandleTypeDef* hwwdg)
phungductung 0:8ede47d38d10 407 {
phungductung 0:8ede47d38d10 408 /* Prevent unused argument(s) compilation warning */
phungductung 0:8ede47d38d10 409 UNUSED(hwwdg);
phungductung 0:8ede47d38d10 410
phungductung 0:8ede47d38d10 411 /* NOTE: This function Should not be modified, when the callback is needed,
phungductung 0:8ede47d38d10 412 the HAL_WWDG_WakeupCallback could be implemented in the user file
phungductung 0:8ede47d38d10 413 */
phungductung 0:8ede47d38d10 414 }
phungductung 0:8ede47d38d10 415
phungductung 0:8ede47d38d10 416 /**
phungductung 0:8ede47d38d10 417 * @}
phungductung 0:8ede47d38d10 418 */
phungductung 0:8ede47d38d10 419
phungductung 0:8ede47d38d10 420 /** @defgroup WWDG_Exported_Functions_Group3 Peripheral State functions
phungductung 0:8ede47d38d10 421 * @brief Peripheral State functions.
phungductung 0:8ede47d38d10 422 *
phungductung 0:8ede47d38d10 423 @verbatim
phungductung 0:8ede47d38d10 424 ==============================================================================
phungductung 0:8ede47d38d10 425 ##### Peripheral State functions #####
phungductung 0:8ede47d38d10 426 ==============================================================================
phungductung 0:8ede47d38d10 427 [..]
phungductung 0:8ede47d38d10 428 This subsection permits to get in run-time the status of the peripheral
phungductung 0:8ede47d38d10 429 and the data flow.
phungductung 0:8ede47d38d10 430
phungductung 0:8ede47d38d10 431 @endverbatim
phungductung 0:8ede47d38d10 432 * @{
phungductung 0:8ede47d38d10 433 */
phungductung 0:8ede47d38d10 434
phungductung 0:8ede47d38d10 435 /**
phungductung 0:8ede47d38d10 436 * @brief Returns the WWDG state.
phungductung 0:8ede47d38d10 437 * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains
phungductung 0:8ede47d38d10 438 * the configuration information for the specified WWDG module.
phungductung 0:8ede47d38d10 439 * @retval HAL state
phungductung 0:8ede47d38d10 440 */
phungductung 0:8ede47d38d10 441 HAL_WWDG_StateTypeDef HAL_WWDG_GetState(WWDG_HandleTypeDef *hwwdg)
phungductung 0:8ede47d38d10 442 {
phungductung 0:8ede47d38d10 443 return hwwdg->State;
phungductung 0:8ede47d38d10 444 }
phungductung 0:8ede47d38d10 445
phungductung 0:8ede47d38d10 446 /**
phungductung 0:8ede47d38d10 447 * @}
phungductung 0:8ede47d38d10 448 */
phungductung 0:8ede47d38d10 449
phungductung 0:8ede47d38d10 450 /**
phungductung 0:8ede47d38d10 451 * @}
phungductung 0:8ede47d38d10 452 */
phungductung 0:8ede47d38d10 453
phungductung 0:8ede47d38d10 454 #endif /* HAL_WWDG_MODULE_ENABLED */
phungductung 0:8ede47d38d10 455 /**
phungductung 0:8ede47d38d10 456 * @}
phungductung 0:8ede47d38d10 457 */
phungductung 0:8ede47d38d10 458
phungductung 0:8ede47d38d10 459 /**
phungductung 0:8ede47d38d10 460 * @}
phungductung 0:8ede47d38d10 461 */
phungductung 0:8ede47d38d10 462
phungductung 0:8ede47d38d10 463 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/