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targets/cmsis/TARGET_STM/TARGET_NUCLEO_F411RE/stm32f4xx_hal_iwdg.c@235:685d5f11838f, 2014-06-23 (annotated)

Committer:
mbed_official
Date:
Mon Jun 23 14:00:09 2014 +0100
Revision:
235:685d5f11838f
Synchronized with git revision 9728c76667962b289ee9c4c687ef9f115db48cd3



Full URL: https://github.com/mbedmicro/mbed/commit/9728c76667962b289ee9c4c687ef9f115db48cd3/



[NUCLEO_F411RE] Add all target files

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UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /**
mbed_official 235:685d5f11838f 2 ******************************************************************************
mbed_official 235:685d5f11838f 3 * @file stm32f4xx_hal_iwdg.c
mbed_official 235:685d5f11838f 4 * @author MCD Application Team
mbed_official 235:685d5f11838f 5 * @version V1.1.0
mbed_official 235:685d5f11838f 6 * @date 19-June-2014
mbed_official 235:685d5f11838f 7 * @brief IWDG HAL module driver.
mbed_official 235:685d5f11838f 8 * This file provides firmware functions to manage the following
mbed_official 235:685d5f11838f 9 * functionalities of the Independent Watchdog (IWDG) peripheral:
mbed_official 235:685d5f11838f 10 * + Initialization and de-initialization functions
mbed_official 235:685d5f11838f 11 * + IO operation functions
mbed_official 235:685d5f11838f 12 * + Peripheral State functions
mbed_official 235:685d5f11838f 13 *
mbed_official 235:685d5f11838f 14 @verbatim
mbed_official 235:685d5f11838f 15 ==============================================================================
mbed_official 235:685d5f11838f 16 ##### IWDG Generic features #####
mbed_official 235:685d5f11838f 17 ==============================================================================
mbed_official 235:685d5f11838f 18 [..]
mbed_official 235:685d5f11838f 19 (+) The IWDG can be started by either software or hardware (configurable
mbed_official 235:685d5f11838f 20 through option byte).
mbed_official 235:685d5f11838f 21
mbed_official 235:685d5f11838f 22 (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
mbed_official 235:685d5f11838f 23 thus stays active even if the main clock fails.
mbed_official 235:685d5f11838f 24 Once the IWDG is started, the LSI is forced ON and cannot be disabled
mbed_official 235:685d5f11838f 25 (LSI cannot be disabled too), and the counter starts counting down from
mbed_official 235:685d5f11838f 26 the reset value of 0xFFF. When it reaches the end of count value (0x000)
mbed_official 235:685d5f11838f 27 a system reset is generated.
mbed_official 235:685d5f11838f 28
mbed_official 235:685d5f11838f 29 (+) The IWDG counter should be refreshed at regular intervals, otherwise the
mbed_official 235:685d5f11838f 30 watchdog generates an MCU reset when the counter reaches 0.
mbed_official 235:685d5f11838f 31
mbed_official 235:685d5f11838f 32 (+) The IWDG is implemented in the VDD voltage domain that is still functional
mbed_official 235:685d5f11838f 33 in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
mbed_official 235:685d5f11838f 34 IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
mbed_official 235:685d5f11838f 35 reset occurs.
mbed_official 235:685d5f11838f 36
mbed_official 235:685d5f11838f 37 (+) Min-max timeout value @32KHz (LSI): ~125us / ~32.7s
mbed_official 235:685d5f11838f 38 The IWDG timeout may vary due to LSI frequency dispersion. STM32F4xx
mbed_official 235:685d5f11838f 39 devices provide the capability to measure the LSI frequency (LSI clock
mbed_official 235:685d5f11838f 40 connected internally to TIM5 CH4 input capture). The measured value
mbed_official 235:685d5f11838f 41 can be used to have an IWDG timeout with an acceptable accuracy.
mbed_official 235:685d5f11838f 42
mbed_official 235:685d5f11838f 43
mbed_official 235:685d5f11838f 44 ##### How to use this driver #####
mbed_official 235:685d5f11838f 45 ==============================================================================
mbed_official 235:685d5f11838f 46 [..]
mbed_official 235:685d5f11838f 47 If Window option is disabled
mbed_official 235:685d5f11838f 48 (+) Use IWDG using HAL_IWDG_Init() function to :
mbed_official 235:685d5f11838f 49 (++) Enable write access to IWDG_PR, IWDG_RLR.
mbed_official 235:685d5f11838f 50 (++) Configure the IWDG prescaler, counter reload value.
mbed_official 235:685d5f11838f 51 This reload value will be loaded in the IWDG counter each time the counter
mbed_official 235:685d5f11838f 52 is reloaded, then the IWDG will start counting down from this value.
mbed_official 235:685d5f11838f 53 [..]
mbed_official 235:685d5f11838f 54 (+) Use IWDG using HAL_IWDG_Start() function to:
mbed_official 235:685d5f11838f 55 (++) Reload IWDG counter with value defined in the IWDG_RLR register.
mbed_official 235:685d5f11838f 56 (++) Start the IWDG, when the IWDG is used in software mode (no need
mbed_official 235:685d5f11838f 57 to enable the LSI, it will be enabled by hardware).
mbed_official 235:685d5f11838f 58 (+) Then the application program must refresh the IWDG counter at regular
mbed_official 235:685d5f11838f 59 intervals during normal operation to prevent an MCU reset, using
mbed_official 235:685d5f11838f 60 HAL_IWDG_Refresh() function.
mbed_official 235:685d5f11838f 61 [..]
mbed_official 235:685d5f11838f 62 if Window option is enabled:
mbed_official 235:685d5f11838f 63
mbed_official 235:685d5f11838f 64 (+) Use IWDG using HAL_IWDG_Start() function to enable IWDG downcounter
mbed_official 235:685d5f11838f 65 (+) Use IWDG using HAL_IWDG_Init() function to :
mbed_official 235:685d5f11838f 66 (++) Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
mbed_official 235:685d5f11838f 67 (++) Configure the IWDG prescaler, reload value and window value.
mbed_official 235:685d5f11838f 68 (+) Then the application program must refresh the IWDG counter at regular
mbed_official 235:685d5f11838f 69 intervals during normal operation to prevent an MCU reset, using
mbed_official 235:685d5f11838f 70 HAL_IWDG_Refresh() function.
mbed_official 235:685d5f11838f 71
mbed_official 235:685d5f11838f 72 *** IWDG HAL driver macros list ***
mbed_official 235:685d5f11838f 73 ====================================
mbed_official 235:685d5f11838f 74 [..]
mbed_official 235:685d5f11838f 75 Below the list of most used macros in IWDG HAL driver.
mbed_official 235:685d5f11838f 76
mbed_official 235:685d5f11838f 77 (+) __HAL_IWDG_START: Enable the IWDG peripheral
mbed_official 235:685d5f11838f 78 (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register
mbed_official 235:685d5f11838f 79 (+) __HAL_IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers
mbed_official 235:685d5f11838f 80 (+) __HAL_IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers
mbed_official 235:685d5f11838f 81 (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
mbed_official 235:685d5f11838f 82
mbed_official 235:685d5f11838f 83 @endverbatim
mbed_official 235:685d5f11838f 84 ******************************************************************************
mbed_official 235:685d5f11838f 85 * @attention
mbed_official 235:685d5f11838f 86 *
mbed_official 235:685d5f11838f 87 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 235:685d5f11838f 88 *
mbed_official 235:685d5f11838f 89 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 235:685d5f11838f 90 * are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 91 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 92 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 93 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 94 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 95 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 96 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 97 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 98 * without specific prior written permission.
mbed_official 235:685d5f11838f 99 *
mbed_official 235:685d5f11838f 100 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 101 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 102 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 103 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 104 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 105 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 106 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 107 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 108 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 109 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 110 *
mbed_official 235:685d5f11838f 111 ******************************************************************************
mbed_official 235:685d5f11838f 112 */
mbed_official 235:685d5f11838f 113
mbed_official 235:685d5f11838f 114 /* Includes ------------------------------------------------------------------*/
mbed_official 235:685d5f11838f 115 #include "stm32f4xx_hal.h"
mbed_official 235:685d5f11838f 116
mbed_official 235:685d5f11838f 117 /** @addtogroup STM32F4xx_HAL_Driver
mbed_official 235:685d5f11838f 118 * @{
mbed_official 235:685d5f11838f 119 */
mbed_official 235:685d5f11838f 120
mbed_official 235:685d5f11838f 121 /** @defgroup IWDG
mbed_official 235:685d5f11838f 122 * @brief IWDG HAL module driver.
mbed_official 235:685d5f11838f 123 * @{
mbed_official 235:685d5f11838f 124 */
mbed_official 235:685d5f11838f 125
mbed_official 235:685d5f11838f 126 #ifdef HAL_IWDG_MODULE_ENABLED
mbed_official 235:685d5f11838f 127
mbed_official 235:685d5f11838f 128 /* Private typedef -----------------------------------------------------------*/
mbed_official 235:685d5f11838f 129 /* Private define ------------------------------------------------------------*/
mbed_official 235:685d5f11838f 130 #define IWDG_TIMEOUT_FLAG ((uint32_t)1000) /* 1 s */
mbed_official 235:685d5f11838f 131 /* Private macro -------------------------------------------------------------*/
mbed_official 235:685d5f11838f 132 /* Private variables ---------------------------------------------------------*/
mbed_official 235:685d5f11838f 133 /* Private function prototypes -----------------------------------------------*/
mbed_official 235:685d5f11838f 134 /* Private functions ---------------------------------------------------------*/
mbed_official 235:685d5f11838f 135
mbed_official 235:685d5f11838f 136 /** @defgroup IWDG_Private_Functions
mbed_official 235:685d5f11838f 137 * @{
mbed_official 235:685d5f11838f 138 */
mbed_official 235:685d5f11838f 139
mbed_official 235:685d5f11838f 140 /** @defgroup IWDG_Group1 Initialization and de-initialization functions
mbed_official 235:685d5f11838f 141 * @brief Initialization and Configuration functions.
mbed_official 235:685d5f11838f 142 *
mbed_official 235:685d5f11838f 143 @verbatim
mbed_official 235:685d5f11838f 144 ===============================================================================
mbed_official 235:685d5f11838f 145 ##### Initialization and de-initialization functions #####
mbed_official 235:685d5f11838f 146 ===============================================================================
mbed_official 235:685d5f11838f 147 [..] This section provides functions allowing to:
mbed_official 235:685d5f11838f 148 (+) Initialize the IWDG according to the specified parameters
mbed_official 235:685d5f11838f 149 in the IWDG_InitTypeDef and create the associated handle
mbed_official 235:685d5f11838f 150 (+) Initialize the IWDG MSP
mbed_official 235:685d5f11838f 151 (+) DeInitialize IWDG MSP
mbed_official 235:685d5f11838f 152
mbed_official 235:685d5f11838f 153 @endverbatim
mbed_official 235:685d5f11838f 154 * @{
mbed_official 235:685d5f11838f 155 */
mbed_official 235:685d5f11838f 156
mbed_official 235:685d5f11838f 157 /**
mbed_official 235:685d5f11838f 158 * @brief Initializes the IWDG according to the specified
mbed_official 235:685d5f11838f 159 * parameters in the IWDG_InitTypeDef and creates the associated handle.
mbed_official 235:685d5f11838f 160 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 161 * the configuration information for the specified IWDG module.
mbed_official 235:685d5f11838f 162 * @retval HAL status
mbed_official 235:685d5f11838f 163 */
mbed_official 235:685d5f11838f 164 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
mbed_official 235:685d5f11838f 165 {
mbed_official 235:685d5f11838f 166 /* Check the IWDG handle allocation */
mbed_official 235:685d5f11838f 167 if(hiwdg == NULL)
mbed_official 235:685d5f11838f 168 {
mbed_official 235:685d5f11838f 169 return HAL_ERROR;
mbed_official 235:685d5f11838f 170 }
mbed_official 235:685d5f11838f 171
mbed_official 235:685d5f11838f 172 /* Check the parameters */
mbed_official 235:685d5f11838f 173 assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
mbed_official 235:685d5f11838f 174 assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
mbed_official 235:685d5f11838f 175 assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
mbed_official 235:685d5f11838f 176
mbed_official 235:685d5f11838f 177 if(hiwdg->State == HAL_IWDG_STATE_RESET)
mbed_official 235:685d5f11838f 178 {
mbed_official 235:685d5f11838f 179 /* Init the low level hardware */
mbed_official 235:685d5f11838f 180 HAL_IWDG_MspInit(hiwdg);
mbed_official 235:685d5f11838f 181 }
mbed_official 235:685d5f11838f 182
mbed_official 235:685d5f11838f 183 /* Change IWDG peripheral state */
mbed_official 235:685d5f11838f 184 hiwdg->State = HAL_IWDG_STATE_BUSY;
mbed_official 235:685d5f11838f 185
mbed_official 235:685d5f11838f 186 /* Enable write access to IWDG_PR and IWDG_RLR registers */
mbed_official 235:685d5f11838f 187 __HAL_IWDG_ENABLE_WRITE_ACCESS(hiwdg);
mbed_official 235:685d5f11838f 188
mbed_official 235:685d5f11838f 189 /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
mbed_official 235:685d5f11838f 190 MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
mbed_official 235:685d5f11838f 191 MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
mbed_official 235:685d5f11838f 192
mbed_official 235:685d5f11838f 193 /* Change IWDG peripheral state */
mbed_official 235:685d5f11838f 194 hiwdg->State = HAL_IWDG_STATE_READY;
mbed_official 235:685d5f11838f 195
mbed_official 235:685d5f11838f 196 /* Return function status */
mbed_official 235:685d5f11838f 197 return HAL_OK;
mbed_official 235:685d5f11838f 198 }
mbed_official 235:685d5f11838f 199
mbed_official 235:685d5f11838f 200 /**
mbed_official 235:685d5f11838f 201 * @brief Initializes the IWDG MSP.
mbed_official 235:685d5f11838f 202 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 203 * the configuration information for the specified IWDG module.
mbed_official 235:685d5f11838f 204 * @retval None
mbed_official 235:685d5f11838f 205 */
mbed_official 235:685d5f11838f 206 __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
mbed_official 235:685d5f11838f 207 {
mbed_official 235:685d5f11838f 208 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 235:685d5f11838f 209 the HAL_IWDG_MspInit could be implemented in the user file
mbed_official 235:685d5f11838f 210 */
mbed_official 235:685d5f11838f 211 }
mbed_official 235:685d5f11838f 212
mbed_official 235:685d5f11838f 213 /**
mbed_official 235:685d5f11838f 214 * @}
mbed_official 235:685d5f11838f 215 */
mbed_official 235:685d5f11838f 216
mbed_official 235:685d5f11838f 217 /** @defgroup IWDG_Group2 IO operation functions
mbed_official 235:685d5f11838f 218 * @brief IO operation functions
mbed_official 235:685d5f11838f 219 *
mbed_official 235:685d5f11838f 220 @verbatim
mbed_official 235:685d5f11838f 221 ===============================================================================
mbed_official 235:685d5f11838f 222 ##### IO operation functions #####
mbed_official 235:685d5f11838f 223 ===============================================================================
mbed_official 235:685d5f11838f 224 [..] This section provides functions allowing to:
mbed_official 235:685d5f11838f 225 (+) Start the IWDG.
mbed_official 235:685d5f11838f 226 (+) Refresh the IWDG.
mbed_official 235:685d5f11838f 227
mbed_official 235:685d5f11838f 228 @endverbatim
mbed_official 235:685d5f11838f 229 * @{
mbed_official 235:685d5f11838f 230 */
mbed_official 235:685d5f11838f 231
mbed_official 235:685d5f11838f 232 /**
mbed_official 235:685d5f11838f 233 * @brief Starts the IWDG.
mbed_official 235:685d5f11838f 234 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 235 * the configuration information for the specified IWDG module.
mbed_official 235:685d5f11838f 236 * @retval HAL status
mbed_official 235:685d5f11838f 237 */
mbed_official 235:685d5f11838f 238 HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
mbed_official 235:685d5f11838f 239 {
mbed_official 235:685d5f11838f 240 /* Process Locked */
mbed_official 235:685d5f11838f 241 __HAL_LOCK(hiwdg);
mbed_official 235:685d5f11838f 242
mbed_official 235:685d5f11838f 243 /* Change IWDG peripheral state */
mbed_official 235:685d5f11838f 244 hiwdg->State = HAL_IWDG_STATE_BUSY;
mbed_official 235:685d5f11838f 245
mbed_official 235:685d5f11838f 246 /* Start the IWDG peripheral */
mbed_official 235:685d5f11838f 247 __HAL_IWDG_START(hiwdg);
mbed_official 235:685d5f11838f 248
mbed_official 235:685d5f11838f 249 /* Reload IWDG counter with value defined in the RLR register */
mbed_official 235:685d5f11838f 250 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
mbed_official 235:685d5f11838f 251
mbed_official 235:685d5f11838f 252 /* Change IWDG peripheral state */
mbed_official 235:685d5f11838f 253 hiwdg->State = HAL_IWDG_STATE_READY;
mbed_official 235:685d5f11838f 254
mbed_official 235:685d5f11838f 255 /* Process Unlocked */
mbed_official 235:685d5f11838f 256 __HAL_UNLOCK(hiwdg);
mbed_official 235:685d5f11838f 257
mbed_official 235:685d5f11838f 258 /* Return function status */
mbed_official 235:685d5f11838f 259 return HAL_OK;
mbed_official 235:685d5f11838f 260 }
mbed_official 235:685d5f11838f 261
mbed_official 235:685d5f11838f 262 /**
mbed_official 235:685d5f11838f 263 * @brief Refreshes the IWDG.
mbed_official 235:685d5f11838f 264 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 265 * the configuration information for the specified IWDG module.
mbed_official 235:685d5f11838f 266 * @retval HAL status
mbed_official 235:685d5f11838f 267 */
mbed_official 235:685d5f11838f 268 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
mbed_official 235:685d5f11838f 269 {
mbed_official 235:685d5f11838f 270 uint32_t tickstart = 0;
mbed_official 235:685d5f11838f 271
mbed_official 235:685d5f11838f 272 /* Process Locked */
mbed_official 235:685d5f11838f 273 __HAL_LOCK(hiwdg);
mbed_official 235:685d5f11838f 274
mbed_official 235:685d5f11838f 275 /* Change IWDG peripheral state */
mbed_official 235:685d5f11838f 276 hiwdg->State = HAL_IWDG_STATE_BUSY;
mbed_official 235:685d5f11838f 277
mbed_official 235:685d5f11838f 278 tickstart = HAL_GetTick();
mbed_official 235:685d5f11838f 279
mbed_official 235:685d5f11838f 280 /* Wait until RVU flag is RESET */
mbed_official 235:685d5f11838f 281 while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
mbed_official 235:685d5f11838f 282 {
mbed_official 235:685d5f11838f 283 if((HAL_GetTick() - tickstart ) > IWDG_TIMEOUT_FLAG)
mbed_official 235:685d5f11838f 284 {
mbed_official 235:685d5f11838f 285 /* Set IWDG state */
mbed_official 235:685d5f11838f 286 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
mbed_official 235:685d5f11838f 287
mbed_official 235:685d5f11838f 288 /* Process unlocked */
mbed_official 235:685d5f11838f 289 __HAL_UNLOCK(hiwdg);
mbed_official 235:685d5f11838f 290
mbed_official 235:685d5f11838f 291 return HAL_TIMEOUT;
mbed_official 235:685d5f11838f 292 }
mbed_official 235:685d5f11838f 293 }
mbed_official 235:685d5f11838f 294
mbed_official 235:685d5f11838f 295 /* Reload IWDG counter with value defined in the reload register */
mbed_official 235:685d5f11838f 296 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
mbed_official 235:685d5f11838f 297
mbed_official 235:685d5f11838f 298 /* Change IWDG peripheral state */
mbed_official 235:685d5f11838f 299 hiwdg->State = HAL_IWDG_STATE_READY;
mbed_official 235:685d5f11838f 300
mbed_official 235:685d5f11838f 301 /* Process Unlocked */
mbed_official 235:685d5f11838f 302 __HAL_UNLOCK(hiwdg);
mbed_official 235:685d5f11838f 303
mbed_official 235:685d5f11838f 304 /* Return function status */
mbed_official 235:685d5f11838f 305 return HAL_OK;
mbed_official 235:685d5f11838f 306 }
mbed_official 235:685d5f11838f 307
mbed_official 235:685d5f11838f 308 /**
mbed_official 235:685d5f11838f 309 * @}
mbed_official 235:685d5f11838f 310 */
mbed_official 235:685d5f11838f 311
mbed_official 235:685d5f11838f 312 /** @defgroup IWDG_Group3 Peripheral State functions
mbed_official 235:685d5f11838f 313 * @brief Peripheral State functions.
mbed_official 235:685d5f11838f 314 *
mbed_official 235:685d5f11838f 315 @verbatim
mbed_official 235:685d5f11838f 316 ===============================================================================
mbed_official 235:685d5f11838f 317 ##### Peripheral State functions #####
mbed_official 235:685d5f11838f 318 ===============================================================================
mbed_official 235:685d5f11838f 319 [..]
mbed_official 235:685d5f11838f 320 This subsection permits to get in run-time the status of the peripheral
mbed_official 235:685d5f11838f 321 and the data flow.
mbed_official 235:685d5f11838f 322
mbed_official 235:685d5f11838f 323 @endverbatim
mbed_official 235:685d5f11838f 324 * @{
mbed_official 235:685d5f11838f 325 */
mbed_official 235:685d5f11838f 326
mbed_official 235:685d5f11838f 327 /**
mbed_official 235:685d5f11838f 328 * @brief Returns the IWDG state.
mbed_official 235:685d5f11838f 329 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 330 * the configuration information for the specified IWDG module.
mbed_official 235:685d5f11838f 331 * @retval HAL state
mbed_official 235:685d5f11838f 332 */
mbed_official 235:685d5f11838f 333 HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
mbed_official 235:685d5f11838f 334 {
mbed_official 235:685d5f11838f 335 return hiwdg->State;
mbed_official 235:685d5f11838f 336 }
mbed_official 235:685d5f11838f 337
mbed_official 235:685d5f11838f 338 /**
mbed_official 235:685d5f11838f 339 * @}
mbed_official 235:685d5f11838f 340 */
mbed_official 235:685d5f11838f 341
mbed_official 235:685d5f11838f 342 /**
mbed_official 235:685d5f11838f 343 * @}
mbed_official 235:685d5f11838f 344 */
mbed_official 235:685d5f11838f 345
mbed_official 235:685d5f11838f 346 #endif /* HAL_IWDG_MODULE_ENABLED */
mbed_official 235:685d5f11838f 347 /**
mbed_official 235:685d5f11838f 348 * @}
mbed_official 235:685d5f11838f 349 */
mbed_official 235:685d5f11838f 350
mbed_official 235:685d5f11838f 351 /**
mbed_official 235:685d5f11838f 352 * @}
mbed_official 235:685d5f11838f 353 */
mbed_official 235:685d5f11838f 354
mbed_official 235:685d5f11838f 355 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/