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Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_iwdg.c@581:39197bcd20f2, 2015-07-02 (annotated)

Committer:
mbed_official
Date:
Thu Jul 02 16:30:08 2015 +0100
Revision:
581:39197bcd20f2
Parent:
532:fe11edbda85c
Child:
613:bc40b8d2aec4
Synchronized with git revision ae2d3cdffe70184eb8736d94f76c45c93f4b7724



Full URL: https://github.com/mbedmicro/mbed/commit/ae2d3cdffe70184eb8736d94f76c45c93f4b7724/



Make it possible to build the core mbed library with yotta

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 87:085cde657901 1 /**
mbed_official 87:085cde657901 2 ******************************************************************************
mbed_official 87:085cde657901 3 * @file stm32f4xx_hal_iwdg.c
mbed_official 87:085cde657901 4 * @author MCD Application Team
mbed_official 532:fe11edbda85c 5 * @version V1.3.0
mbed_official 532:fe11edbda85c 6 * @date 09-March-2015
mbed_official 87:085cde657901 7 * @brief IWDG HAL module driver.
mbed_official 87:085cde657901 8 * This file provides firmware functions to manage the following
mbed_official 87:085cde657901 9 * functionalities of the Independent Watchdog (IWDG) peripheral:
mbed_official 532:fe11edbda85c 10 * + Initialization and Configuration functions
mbed_official 87:085cde657901 11 * + IO operation functions
mbed_official 87:085cde657901 12 * + Peripheral State functions
mbed_official 87:085cde657901 13 *
mbed_official 87:085cde657901 14 @verbatim
mbed_official 87:085cde657901 15 ==============================================================================
mbed_official 532:fe11edbda85c 16 ##### IWDG Specific features #####
mbed_official 87:085cde657901 17 ==============================================================================
mbed_official 87:085cde657901 18 [..]
mbed_official 87:085cde657901 19 (+) The IWDG can be started by either software or hardware (configurable
mbed_official 87:085cde657901 20 through option byte).
mbed_official 87:085cde657901 21
mbed_official 87:085cde657901 22 (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
mbed_official 87:085cde657901 23 thus stays active even if the main clock fails.
mbed_official 87:085cde657901 24 Once the IWDG is started, the LSI is forced ON and cannot be disabled
mbed_official 87:085cde657901 25 (LSI cannot be disabled too), and the counter starts counting down from
mbed_official 87:085cde657901 26 the reset value of 0xFFF. When it reaches the end of count value (0x000)
mbed_official 87:085cde657901 27 a system reset is generated.
mbed_official 87:085cde657901 28
mbed_official 87:085cde657901 29 (+) The IWDG counter should be refreshed at regular intervals, otherwise the
mbed_official 87:085cde657901 30 watchdog generates an MCU reset when the counter reaches 0.
mbed_official 87:085cde657901 31
mbed_official 87:085cde657901 32 (+) The IWDG is implemented in the VDD voltage domain that is still functional
mbed_official 87:085cde657901 33 in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
mbed_official 87:085cde657901 34 IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
mbed_official 87:085cde657901 35 reset occurs.
mbed_official 87:085cde657901 36
mbed_official 87:085cde657901 37 (+) Min-max timeout value @32KHz (LSI): ~125us / ~32.7s
mbed_official 87:085cde657901 38 The IWDG timeout may vary due to LSI frequency dispersion. STM32F4xx
mbed_official 87:085cde657901 39 devices provide the capability to measure the LSI frequency (LSI clock
mbed_official 87:085cde657901 40 connected internally to TIM5 CH4 input capture). The measured value
mbed_official 87:085cde657901 41 can be used to have an IWDG timeout with an acceptable accuracy.
mbed_official 87:085cde657901 42
mbed_official 87:085cde657901 43
mbed_official 87:085cde657901 44 ##### How to use this driver #####
mbed_official 87:085cde657901 45 ==============================================================================
mbed_official 87:085cde657901 46 [..]
mbed_official 369:2e96f1b71984 47 If Window option is disabled
mbed_official 369:2e96f1b71984 48 (+) Use IWDG using HAL_IWDG_Init() function to :
mbed_official 369:2e96f1b71984 49 (++) Enable write access to IWDG_PR, IWDG_RLR.
mbed_official 369:2e96f1b71984 50 (++) Configure the IWDG prescaler, counter reload value.
mbed_official 369:2e96f1b71984 51 This reload value will be loaded in the IWDG counter each time the counter
mbed_official 369:2e96f1b71984 52 is reloaded, then the IWDG will start counting down from this value.
mbed_official 369:2e96f1b71984 53 [..]
mbed_official 87:085cde657901 54 (+) Use IWDG using HAL_IWDG_Start() function to:
mbed_official 87:085cde657901 55 (++) Reload IWDG counter with value defined in the IWDG_RLR register.
mbed_official 87:085cde657901 56 (++) Start the IWDG, when the IWDG is used in software mode (no need
mbed_official 87:085cde657901 57 to enable the LSI, it will be enabled by hardware).
mbed_official 87:085cde657901 58 (+) Then the application program must refresh the IWDG counter at regular
mbed_official 87:085cde657901 59 intervals during normal operation to prevent an MCU reset, using
mbed_official 369:2e96f1b71984 60 HAL_IWDG_Refresh() function.
mbed_official 369:2e96f1b71984 61 [..]
mbed_official 369:2e96f1b71984 62 if Window option is enabled:
mbed_official 369:2e96f1b71984 63
mbed_official 369:2e96f1b71984 64 (+) Use IWDG using HAL_IWDG_Start() function to enable IWDG downcounter
mbed_official 369:2e96f1b71984 65 (+) Use IWDG using HAL_IWDG_Init() function to :
mbed_official 369:2e96f1b71984 66 (++) Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
mbed_official 369:2e96f1b71984 67 (++) Configure the IWDG prescaler, reload value and window value.
mbed_official 369:2e96f1b71984 68 (+) Then the application program must refresh the IWDG counter at regular
mbed_official 369:2e96f1b71984 69 intervals during normal operation to prevent an MCU reset, using
mbed_official 87:085cde657901 70 HAL_IWDG_Refresh() function.
mbed_official 87:085cde657901 71
mbed_official 87:085cde657901 72 *** IWDG HAL driver macros list ***
mbed_official 87:085cde657901 73 ====================================
mbed_official 87:085cde657901 74 [..]
mbed_official 87:085cde657901 75 Below the list of most used macros in IWDG HAL driver.
mbed_official 87:085cde657901 76
mbed_official 87:085cde657901 77 (+) __HAL_IWDG_START: Enable the IWDG peripheral
mbed_official 87:085cde657901 78 (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register
mbed_official 87:085cde657901 79 (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
mbed_official 369:2e96f1b71984 80
mbed_official 87:085cde657901 81 @endverbatim
mbed_official 87:085cde657901 82 ******************************************************************************
mbed_official 87:085cde657901 83 * @attention
mbed_official 87:085cde657901 84 *
mbed_official 532:fe11edbda85c 85 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
mbed_official 87:085cde657901 86 *
mbed_official 87:085cde657901 87 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 87:085cde657901 88 * are permitted provided that the following conditions are met:
mbed_official 87:085cde657901 89 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 87:085cde657901 90 * this list of conditions and the following disclaimer.
mbed_official 87:085cde657901 91 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 87:085cde657901 92 * this list of conditions and the following disclaimer in the documentation
mbed_official 87:085cde657901 93 * and/or other materials provided with the distribution.
mbed_official 87:085cde657901 94 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 87:085cde657901 95 * may be used to endorse or promote products derived from this software
mbed_official 87:085cde657901 96 * without specific prior written permission.
mbed_official 87:085cde657901 97 *
mbed_official 87:085cde657901 98 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 87:085cde657901 99 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 87:085cde657901 100 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 87:085cde657901 101 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 87:085cde657901 102 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 87:085cde657901 103 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 87:085cde657901 104 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 87:085cde657901 105 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 87:085cde657901 106 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 87:085cde657901 107 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 87:085cde657901 108 *
mbed_official 87:085cde657901 109 ******************************************************************************
mbed_official 87:085cde657901 110 */
mbed_official 87:085cde657901 111
mbed_official 87:085cde657901 112 /* Includes ------------------------------------------------------------------*/
mbed_official 87:085cde657901 113 #include "stm32f4xx_hal.h"
mbed_official 87:085cde657901 114
mbed_official 87:085cde657901 115 /** @addtogroup STM32F4xx_HAL_Driver
mbed_official 87:085cde657901 116 * @{
mbed_official 87:085cde657901 117 */
mbed_official 87:085cde657901 118
mbed_official 532:fe11edbda85c 119 /** @defgroup IWDG IWDG
mbed_official 87:085cde657901 120 * @brief IWDG HAL module driver.
mbed_official 87:085cde657901 121 * @{
mbed_official 87:085cde657901 122 */
mbed_official 87:085cde657901 123
mbed_official 87:085cde657901 124 #ifdef HAL_IWDG_MODULE_ENABLED
mbed_official 87:085cde657901 125
mbed_official 87:085cde657901 126 /* Private typedef -----------------------------------------------------------*/
mbed_official 87:085cde657901 127 /* Private define ------------------------------------------------------------*/
mbed_official 532:fe11edbda85c 128 /** @addtogroup IWDG_Private_Constants
mbed_official 532:fe11edbda85c 129 * @{
mbed_official 532:fe11edbda85c 130 */
mbed_official 369:2e96f1b71984 131 #define IWDG_TIMEOUT_FLAG ((uint32_t)1000) /* 1 s */
mbed_official 532:fe11edbda85c 132 /**
mbed_official 532:fe11edbda85c 133 * @}
mbed_official 532:fe11edbda85c 134 */
mbed_official 87:085cde657901 135 /* Private macro -------------------------------------------------------------*/
mbed_official 87:085cde657901 136 /* Private variables ---------------------------------------------------------*/
mbed_official 87:085cde657901 137 /* Private function prototypes -----------------------------------------------*/
mbed_official 87:085cde657901 138 /* Private functions ---------------------------------------------------------*/
mbed_official 532:fe11edbda85c 139 /* Exported functions --------------------------------------------------------*/
mbed_official 532:fe11edbda85c 140 /** @defgroup IWDG_Exported_Functions IWDG Exported Functions
mbed_official 87:085cde657901 141 * @{
mbed_official 87:085cde657901 142 */
mbed_official 87:085cde657901 143
mbed_official 532:fe11edbda85c 144 /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions
mbed_official 87:085cde657901 145 * @brief Initialization and Configuration functions.
mbed_official 87:085cde657901 146 *
mbed_official 87:085cde657901 147 @verbatim
mbed_official 87:085cde657901 148 ===============================================================================
mbed_official 87:085cde657901 149 ##### Initialization and de-initialization functions #####
mbed_official 87:085cde657901 150 ===============================================================================
mbed_official 87:085cde657901 151 [..] This section provides functions allowing to:
mbed_official 87:085cde657901 152 (+) Initialize the IWDG according to the specified parameters
mbed_official 87:085cde657901 153 in the IWDG_InitTypeDef and create the associated handle
mbed_official 87:085cde657901 154 (+) Initialize the IWDG MSP
mbed_official 87:085cde657901 155 (+) DeInitialize IWDG MSP
mbed_official 87:085cde657901 156
mbed_official 87:085cde657901 157 @endverbatim
mbed_official 87:085cde657901 158 * @{
mbed_official 87:085cde657901 159 */
mbed_official 87:085cde657901 160
mbed_official 87:085cde657901 161 /**
mbed_official 87:085cde657901 162 * @brief Initializes the IWDG according to the specified
mbed_official 87:085cde657901 163 * parameters in the IWDG_InitTypeDef and creates the associated handle.
mbed_official 226:b062af740e40 164 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 226:b062af740e40 165 * the configuration information for the specified IWDG module.
mbed_official 87:085cde657901 166 * @retval HAL status
mbed_official 87:085cde657901 167 */
mbed_official 87:085cde657901 168 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
mbed_official 87:085cde657901 169 {
mbed_official 87:085cde657901 170 /* Check the IWDG handle allocation */
mbed_official 369:2e96f1b71984 171 if(hiwdg == HAL_NULL)
mbed_official 87:085cde657901 172 {
mbed_official 87:085cde657901 173 return HAL_ERROR;
mbed_official 87:085cde657901 174 }
mbed_official 87:085cde657901 175
mbed_official 87:085cde657901 176 /* Check the parameters */
mbed_official 369:2e96f1b71984 177 assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
mbed_official 87:085cde657901 178 assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
mbed_official 87:085cde657901 179 assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
mbed_official 87:085cde657901 180
mbed_official 87:085cde657901 181 if(hiwdg->State == HAL_IWDG_STATE_RESET)
mbed_official 87:085cde657901 182 {
mbed_official 532:fe11edbda85c 183 /* Allocate lock resource and initialize it */
mbed_official 532:fe11edbda85c 184 hiwdg->Lock = HAL_UNLOCKED;
mbed_official 87:085cde657901 185 /* Init the low level hardware */
mbed_official 87:085cde657901 186 HAL_IWDG_MspInit(hiwdg);
mbed_official 87:085cde657901 187 }
mbed_official 87:085cde657901 188
mbed_official 87:085cde657901 189 /* Change IWDG peripheral state */
mbed_official 87:085cde657901 190 hiwdg->State = HAL_IWDG_STATE_BUSY;
mbed_official 87:085cde657901 191
mbed_official 87:085cde657901 192 /* Enable write access to IWDG_PR and IWDG_RLR registers */
mbed_official 532:fe11edbda85c 193 IWDG_ENABLE_WRITE_ACCESS(hiwdg);
mbed_official 87:085cde657901 194
mbed_official 369:2e96f1b71984 195 /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
mbed_official 369:2e96f1b71984 196 MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
mbed_official 369:2e96f1b71984 197 MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
mbed_official 87:085cde657901 198
mbed_official 87:085cde657901 199 /* Change IWDG peripheral state */
mbed_official 87:085cde657901 200 hiwdg->State = HAL_IWDG_STATE_READY;
mbed_official 87:085cde657901 201
mbed_official 87:085cde657901 202 /* Return function status */
mbed_official 87:085cde657901 203 return HAL_OK;
mbed_official 87:085cde657901 204 }
mbed_official 87:085cde657901 205
mbed_official 87:085cde657901 206 /**
mbed_official 87:085cde657901 207 * @brief Initializes the IWDG MSP.
mbed_official 226:b062af740e40 208 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 226:b062af740e40 209 * the configuration information for the specified IWDG module.
mbed_official 87:085cde657901 210 * @retval None
mbed_official 87:085cde657901 211 */
mbed_official 87:085cde657901 212 __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
mbed_official 87:085cde657901 213 {
mbed_official 87:085cde657901 214 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 87:085cde657901 215 the HAL_IWDG_MspInit could be implemented in the user file
mbed_official 87:085cde657901 216 */
mbed_official 87:085cde657901 217 }
mbed_official 87:085cde657901 218
mbed_official 87:085cde657901 219 /**
mbed_official 87:085cde657901 220 * @}
mbed_official 87:085cde657901 221 */
mbed_official 87:085cde657901 222
mbed_official 532:fe11edbda85c 223 /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
mbed_official 87:085cde657901 224 * @brief IO operation functions
mbed_official 87:085cde657901 225 *
mbed_official 87:085cde657901 226 @verbatim
mbed_official 87:085cde657901 227 ===============================================================================
mbed_official 87:085cde657901 228 ##### IO operation functions #####
mbed_official 87:085cde657901 229 ===============================================================================
mbed_official 87:085cde657901 230 [..] This section provides functions allowing to:
mbed_official 87:085cde657901 231 (+) Start the IWDG.
mbed_official 87:085cde657901 232 (+) Refresh the IWDG.
mbed_official 87:085cde657901 233
mbed_official 87:085cde657901 234 @endverbatim
mbed_official 87:085cde657901 235 * @{
mbed_official 87:085cde657901 236 */
mbed_official 87:085cde657901 237
mbed_official 87:085cde657901 238 /**
mbed_official 87:085cde657901 239 * @brief Starts the IWDG.
mbed_official 226:b062af740e40 240 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 226:b062af740e40 241 * the configuration information for the specified IWDG module.
mbed_official 87:085cde657901 242 * @retval HAL status
mbed_official 87:085cde657901 243 */
mbed_official 87:085cde657901 244 HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
mbed_official 87:085cde657901 245 {
mbed_official 87:085cde657901 246 /* Process Locked */
mbed_official 87:085cde657901 247 __HAL_LOCK(hiwdg);
mbed_official 87:085cde657901 248
mbed_official 87:085cde657901 249 /* Change IWDG peripheral state */
mbed_official 87:085cde657901 250 hiwdg->State = HAL_IWDG_STATE_BUSY;
mbed_official 87:085cde657901 251
mbed_official 87:085cde657901 252 /* Start the IWDG peripheral */
mbed_official 87:085cde657901 253 __HAL_IWDG_START(hiwdg);
mbed_official 87:085cde657901 254
mbed_official 87:085cde657901 255 /* Reload IWDG counter with value defined in the RLR register */
mbed_official 87:085cde657901 256 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
mbed_official 87:085cde657901 257
mbed_official 87:085cde657901 258 /* Change IWDG peripheral state */
mbed_official 87:085cde657901 259 hiwdg->State = HAL_IWDG_STATE_READY;
mbed_official 87:085cde657901 260
mbed_official 87:085cde657901 261 /* Process Unlocked */
mbed_official 87:085cde657901 262 __HAL_UNLOCK(hiwdg);
mbed_official 87:085cde657901 263
mbed_official 87:085cde657901 264 /* Return function status */
mbed_official 87:085cde657901 265 return HAL_OK;
mbed_official 87:085cde657901 266 }
mbed_official 87:085cde657901 267
mbed_official 87:085cde657901 268 /**
mbed_official 87:085cde657901 269 * @brief Refreshes the IWDG.
mbed_official 226:b062af740e40 270 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 226:b062af740e40 271 * the configuration information for the specified IWDG module.
mbed_official 87:085cde657901 272 * @retval HAL status
mbed_official 87:085cde657901 273 */
mbed_official 87:085cde657901 274 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
mbed_official 87:085cde657901 275 {
mbed_official 369:2e96f1b71984 276 uint32_t tickstart = 0;
mbed_official 369:2e96f1b71984 277
mbed_official 87:085cde657901 278 /* Process Locked */
mbed_official 369:2e96f1b71984 279 __HAL_LOCK(hiwdg);
mbed_official 369:2e96f1b71984 280
mbed_official 87:085cde657901 281 /* Change IWDG peripheral state */
mbed_official 87:085cde657901 282 hiwdg->State = HAL_IWDG_STATE_BUSY;
mbed_official 369:2e96f1b71984 283
mbed_official 369:2e96f1b71984 284 tickstart = HAL_GetTick();
mbed_official 369:2e96f1b71984 285
mbed_official 369:2e96f1b71984 286 /* Wait until RVU flag is RESET */
mbed_official 369:2e96f1b71984 287 while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
mbed_official 369:2e96f1b71984 288 {
mbed_official 369:2e96f1b71984 289 if((HAL_GetTick() - tickstart ) > IWDG_TIMEOUT_FLAG)
mbed_official 369:2e96f1b71984 290 {
mbed_official 369:2e96f1b71984 291 /* Set IWDG state */
mbed_official 369:2e96f1b71984 292 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
mbed_official 369:2e96f1b71984 293
mbed_official 369:2e96f1b71984 294 /* Process unlocked */
mbed_official 369:2e96f1b71984 295 __HAL_UNLOCK(hiwdg);
mbed_official 369:2e96f1b71984 296
mbed_official 369:2e96f1b71984 297 return HAL_TIMEOUT;
mbed_official 369:2e96f1b71984 298 }
mbed_official 369:2e96f1b71984 299 }
mbed_official 87:085cde657901 300
mbed_official 87:085cde657901 301 /* Reload IWDG counter with value defined in the reload register */
mbed_official 87:085cde657901 302 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
mbed_official 87:085cde657901 303
mbed_official 87:085cde657901 304 /* Change IWDG peripheral state */
mbed_official 87:085cde657901 305 hiwdg->State = HAL_IWDG_STATE_READY;
mbed_official 87:085cde657901 306
mbed_official 87:085cde657901 307 /* Process Unlocked */
mbed_official 87:085cde657901 308 __HAL_UNLOCK(hiwdg);
mbed_official 87:085cde657901 309
mbed_official 87:085cde657901 310 /* Return function status */
mbed_official 87:085cde657901 311 return HAL_OK;
mbed_official 87:085cde657901 312 }
mbed_official 87:085cde657901 313
mbed_official 87:085cde657901 314 /**
mbed_official 87:085cde657901 315 * @}
mbed_official 87:085cde657901 316 */
mbed_official 87:085cde657901 317
mbed_official 532:fe11edbda85c 318 /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions
mbed_official 87:085cde657901 319 * @brief Peripheral State functions.
mbed_official 87:085cde657901 320 *
mbed_official 87:085cde657901 321 @verbatim
mbed_official 87:085cde657901 322 ===============================================================================
mbed_official 87:085cde657901 323 ##### Peripheral State functions #####
mbed_official 87:085cde657901 324 ===============================================================================
mbed_official 87:085cde657901 325 [..]
mbed_official 87:085cde657901 326 This subsection permits to get in run-time the status of the peripheral
mbed_official 87:085cde657901 327 and the data flow.
mbed_official 87:085cde657901 328
mbed_official 87:085cde657901 329 @endverbatim
mbed_official 87:085cde657901 330 * @{
mbed_official 87:085cde657901 331 */
mbed_official 87:085cde657901 332
mbed_official 87:085cde657901 333 /**
mbed_official 87:085cde657901 334 * @brief Returns the IWDG state.
mbed_official 226:b062af740e40 335 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 226:b062af740e40 336 * the configuration information for the specified IWDG module.
mbed_official 87:085cde657901 337 * @retval HAL state
mbed_official 87:085cde657901 338 */
mbed_official 87:085cde657901 339 HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
mbed_official 87:085cde657901 340 {
mbed_official 87:085cde657901 341 return hiwdg->State;
mbed_official 87:085cde657901 342 }
mbed_official 87:085cde657901 343
mbed_official 87:085cde657901 344 /**
mbed_official 87:085cde657901 345 * @}
mbed_official 87:085cde657901 346 */
mbed_official 87:085cde657901 347
mbed_official 87:085cde657901 348 /**
mbed_official 87:085cde657901 349 * @}
mbed_official 87:085cde657901 350 */
mbed_official 87:085cde657901 351
mbed_official 87:085cde657901 352 #endif /* HAL_IWDG_MODULE_ENABLED */
mbed_official 87:085cde657901 353 /**
mbed_official 87:085cde657901 354 * @}
mbed_official 87:085cde657901 355 */
mbed_official 87:085cde657901 356
mbed_official 87:085cde657901 357 /**
mbed_official 87:085cde657901 358 * @}
mbed_official 87:085cde657901 359 */
mbed_official 87:085cde657901 360
mbed_official 87:085cde657901 361 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/