en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_iwdg.c@124:6a4a5b7d7324, 2016-05-09 (annotated)

Committer:
mbed_official
Date:
Mon May 09 18:30:12 2016 +0100
Revision:
124:6a4a5b7d7324
Parent:
0:9b334a45a8ff 
Synchronized with git revision ad75bdcde34d7da9d54b7669010c7fb968a99c7c



Full URL: https://github.com/mbedmicro/mbed/commit/ad75bdcde34d7da9d54b7669010c7fb968a99c7c/



[STMF1] Stm32f1_hal_cube update

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32f1xx_hal_iwdg.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
mbed_official 124:6a4a5b7d7324 5 * @version V1.0.4
mbed_official 124:6a4a5b7d7324 6 * @date 29-April-2016
bogdanm 0:9b334a45a8ff 7 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 8 * This file provides firmware functions to manage the following
bogdanm 0:9b334a45a8ff 9 * functionalities of the Independent Watchdog (IWDG) peripheral:
bogdanm 0:9b334a45a8ff 10 * + Initialization and Configuration functions
bogdanm 0:9b334a45a8ff 11 * + IO operation functions
bogdanm 0:9b334a45a8ff 12 * + Peripheral State functions
bogdanm 0:9b334a45a8ff 13 @verbatim
bogdanm 0:9b334a45a8ff 14 ================================================================================
bogdanm 0:9b334a45a8ff 15 ##### IWDG specific features #####
bogdanm 0:9b334a45a8ff 16 ================================================================================
bogdanm 0:9b334a45a8ff 17 [..]
bogdanm 0:9b334a45a8ff 18 (+) The IWDG can be started by either software or hardware (configurable
bogdanm 0:9b334a45a8ff 19 through option byte).
bogdanm 0:9b334a45a8ff 20 (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
bogdanm 0:9b334a45a8ff 21 thus stays active even if the main clock fails.
bogdanm 0:9b334a45a8ff 22 (+) Once the IWDG is started, the LSI is forced ON and cannot be disabled
bogdanm 0:9b334a45a8ff 23 (LSI cannot be disabled too), and the counter starts counting down from
bogdanm 0:9b334a45a8ff 24 the reset value of 0xFFF. When it reaches the end of count value (0x000)
bogdanm 0:9b334a45a8ff 25 a system reset is generated.
bogdanm 0:9b334a45a8ff 26 (+) The IWDG counter should be refreshed at regular intervals, otherwise the
bogdanm 0:9b334a45a8ff 27 watchdog generates an MCU reset when the counter reaches 0.
bogdanm 0:9b334a45a8ff 28 (+) The IWDG is implemented in the VDD voltage domain that is still functional
bogdanm 0:9b334a45a8ff 29 in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
bogdanm 0:9b334a45a8ff 30 (+) IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
bogdanm 0:9b334a45a8ff 31 reset occurs.
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 (+) Min-max timeout value at 40KHz (LSI): 0.1us / 26.2s .
bogdanm 0:9b334a45a8ff 34 The IWDG timeout may vary due to LSI frequency dispersion. STM32F1xx
bogdanm 0:9b334a45a8ff 35 devices provide the capability to measure the LSI frequency (LSI clock
bogdanm 0:9b334a45a8ff 36 connected internally to TIM5 CH4 input capture). The measured value
bogdanm 0:9b334a45a8ff 37 can be used to have an IWDG timeout with an acceptable accuracy.
bogdanm 0:9b334a45a8ff 38 For more information, please refer to the STM32F1xx Reference manual.
bogdanm 0:9b334a45a8ff 39 Note: LSI Calibration is only available on: High density, XL-density and Connectivity line devices.
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 42 ==============================================================================
bogdanm 0:9b334a45a8ff 43 [..]
bogdanm 0:9b334a45a8ff 44 (+) Use IWDG using HAL_IWDG_Init() function to :
bogdanm 0:9b334a45a8ff 45 (++) Enable write access to IWDG_PR, IWDG_RLR.
bogdanm 0:9b334a45a8ff 46 (++) Configure the IWDG prescaler, counter reload value.
bogdanm 0:9b334a45a8ff 47 This reload value will be loaded in the IWDG counter each time the counter
bogdanm 0:9b334a45a8ff 48 is reloaded, then the IWDG will start counting down from this value.
bogdanm 0:9b334a45a8ff 49 (+) Use IWDG using HAL_IWDG_Start() function to :
bogdanm 0:9b334a45a8ff 50 (++) Reload IWDG counter with value defined in the IWDG_RLR register.
bogdanm 0:9b334a45a8ff 51 (++) Start the IWDG, when the IWDG is used in software mode (no need
bogdanm 0:9b334a45a8ff 52 to enable the LSI, it will be enabled by hardware).
bogdanm 0:9b334a45a8ff 53 (+) Then the application program must refresh the IWDG counter at regular
bogdanm 0:9b334a45a8ff 54 intervals during normal operation to prevent an MCU reset, using
bogdanm 0:9b334a45a8ff 55 HAL_IWDG_Refresh() function.
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 *** IWDG HAL driver macros list ***
bogdanm 0:9b334a45a8ff 58 ====================================
bogdanm 0:9b334a45a8ff 59 [..]
bogdanm 0:9b334a45a8ff 60 Below the list of most used macros in IWDG HAL driver.
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 (+) __HAL_IWDG_START: Enable the IWDG peripheral
bogdanm 0:9b334a45a8ff 63 (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register
bogdanm 0:9b334a45a8ff 64 (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
bogdanm 0:9b334a45a8ff 65
bogdanm 0:9b334a45a8ff 66 @endverbatim
bogdanm 0:9b334a45a8ff 67 ******************************************************************************
bogdanm 0:9b334a45a8ff 68 * @attention
bogdanm 0:9b334a45a8ff 69 *
mbed_official 124:6a4a5b7d7324 70 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 71 *
bogdanm 0:9b334a45a8ff 72 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 73 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 74 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 75 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 76 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 77 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 78 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 79 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 80 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 81 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 82 *
bogdanm 0:9b334a45a8ff 83 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 84 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 85 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 86 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 87 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 88 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 89 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 90 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 91 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 92 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 93 *
bogdanm 0:9b334a45a8ff 94 ******************************************************************************
bogdanm 0:9b334a45a8ff 95 */
bogdanm 0:9b334a45a8ff 96
bogdanm 0:9b334a45a8ff 97 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 98 #include "stm32f1xx_hal.h"
bogdanm 0:9b334a45a8ff 99
bogdanm 0:9b334a45a8ff 100 /** @addtogroup STM32F1xx_HAL_Driver
bogdanm 0:9b334a45a8ff 101 * @{
bogdanm 0:9b334a45a8ff 102 */
bogdanm 0:9b334a45a8ff 103
bogdanm 0:9b334a45a8ff 104 /** @defgroup IWDG IWDG
bogdanm 0:9b334a45a8ff 105 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 106 * @{
bogdanm 0:9b334a45a8ff 107 */
bogdanm 0:9b334a45a8ff 108
bogdanm 0:9b334a45a8ff 109 #ifdef HAL_IWDG_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 110
bogdanm 0:9b334a45a8ff 111 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 112 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 113
bogdanm 0:9b334a45a8ff 114 /** @defgroup IWDG_Private_Constants IWDG Private Constants
bogdanm 0:9b334a45a8ff 115 * @{
bogdanm 0:9b334a45a8ff 116 */
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118 #define IWDG_DEFAULT_TIMEOUT (uint32_t)1000
bogdanm 0:9b334a45a8ff 119
bogdanm 0:9b334a45a8ff 120 /**
bogdanm 0:9b334a45a8ff 121 * @}
bogdanm 0:9b334a45a8ff 122 */
bogdanm 0:9b334a45a8ff 123
bogdanm 0:9b334a45a8ff 124 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 125 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 126 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 127 /* Private functions ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129 /** @defgroup IWDG_Exported_Functions IWDG Exported Functions
bogdanm 0:9b334a45a8ff 130 * @{
bogdanm 0:9b334a45a8ff 131 */
bogdanm 0:9b334a45a8ff 132
bogdanm 0:9b334a45a8ff 133 /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 134 * @brief Initialization and Configuration functions.
bogdanm 0:9b334a45a8ff 135 *
bogdanm 0:9b334a45a8ff 136 @verbatim
bogdanm 0:9b334a45a8ff 137 ===============================================================================
bogdanm 0:9b334a45a8ff 138 ##### Initialization and de-initialization functions #####
bogdanm 0:9b334a45a8ff 139 ===============================================================================
bogdanm 0:9b334a45a8ff 140 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 141 (+) Initialize the IWDG according to the specified parameters
bogdanm 0:9b334a45a8ff 142 in the IWDG_InitTypeDef and create the associated handle
bogdanm 0:9b334a45a8ff 143 (+) Initialize the IWDG MSP
bogdanm 0:9b334a45a8ff 144 (+) DeInitialize IWDG MSP
bogdanm 0:9b334a45a8ff 145
bogdanm 0:9b334a45a8ff 146 @endverbatim
bogdanm 0:9b334a45a8ff 147 * @{
bogdanm 0:9b334a45a8ff 148 */
bogdanm 0:9b334a45a8ff 149
bogdanm 0:9b334a45a8ff 150 /**
bogdanm 0:9b334a45a8ff 151 * @brief Initializes the IWDG according to the specified
bogdanm 0:9b334a45a8ff 152 * parameters in the IWDG_InitTypeDef and creates the associated handle.
bogdanm 0:9b334a45a8ff 153 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 154 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 155 * @retval HAL status
bogdanm 0:9b334a45a8ff 156 */
bogdanm 0:9b334a45a8ff 157 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 158 {
bogdanm 0:9b334a45a8ff 159 /* Check the IWDG handle allocation */
bogdanm 0:9b334a45a8ff 160 if(hiwdg == NULL)
bogdanm 0:9b334a45a8ff 161 {
bogdanm 0:9b334a45a8ff 162 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 163 }
bogdanm 0:9b334a45a8ff 164
bogdanm 0:9b334a45a8ff 165 /* Check the parameters */
bogdanm 0:9b334a45a8ff 166 assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
bogdanm 0:9b334a45a8ff 167 assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
bogdanm 0:9b334a45a8ff 168 assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
bogdanm 0:9b334a45a8ff 169
bogdanm 0:9b334a45a8ff 170 /* Check pending flag, if previous update not done, return error */
bogdanm 0:9b334a45a8ff 171 if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
bogdanm 0:9b334a45a8ff 172 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET))
bogdanm 0:9b334a45a8ff 173 {
bogdanm 0:9b334a45a8ff 174 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 175 }
bogdanm 0:9b334a45a8ff 176
bogdanm 0:9b334a45a8ff 177 if(hiwdg->State == HAL_IWDG_STATE_RESET)
bogdanm 0:9b334a45a8ff 178 {
bogdanm 0:9b334a45a8ff 179 /* Allocate lock resource and initialize it */
mbed_official 124:6a4a5b7d7324 180 hiwdg->Lock = HAL_UNLOCKED;
bogdanm 0:9b334a45a8ff 181
bogdanm 0:9b334a45a8ff 182 /* Init the low level hardware */
bogdanm 0:9b334a45a8ff 183 HAL_IWDG_MspInit(hiwdg);
bogdanm 0:9b334a45a8ff 184 }
bogdanm 0:9b334a45a8ff 185
bogdanm 0:9b334a45a8ff 186 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 187 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 188
bogdanm 0:9b334a45a8ff 189 /* Enable write access to IWDG_PR and IWDG_RLR registers */
bogdanm 0:9b334a45a8ff 190 IWDG_ENABLE_WRITE_ACCESS(hiwdg);
bogdanm 0:9b334a45a8ff 191
bogdanm 0:9b334a45a8ff 192 /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
bogdanm 0:9b334a45a8ff 193 MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
bogdanm 0:9b334a45a8ff 194 MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
bogdanm 0:9b334a45a8ff 195
bogdanm 0:9b334a45a8ff 196 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 197 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 198
bogdanm 0:9b334a45a8ff 199 /* Return function status */
bogdanm 0:9b334a45a8ff 200 return HAL_OK;
bogdanm 0:9b334a45a8ff 201 }
bogdanm 0:9b334a45a8ff 202
bogdanm 0:9b334a45a8ff 203 /**
bogdanm 0:9b334a45a8ff 204 * @brief Initializes the IWDG MSP.
bogdanm 0:9b334a45a8ff 205 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 206 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 207 * @retval None
bogdanm 0:9b334a45a8ff 208 */
bogdanm 0:9b334a45a8ff 209 __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 210 {
mbed_official 124:6a4a5b7d7324 211 /* Prevent unused argument(s) compilation warning */
mbed_official 124:6a4a5b7d7324 212 UNUSED(hiwdg);
bogdanm 0:9b334a45a8ff 213 /* NOTE : This function Should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 214 the HAL_IWDG_MspInit could be implemented in the user file
bogdanm 0:9b334a45a8ff 215 */
bogdanm 0:9b334a45a8ff 216 }
bogdanm 0:9b334a45a8ff 217
bogdanm 0:9b334a45a8ff 218 /**
bogdanm 0:9b334a45a8ff 219 * @}
bogdanm 0:9b334a45a8ff 220 */
bogdanm 0:9b334a45a8ff 221
bogdanm 0:9b334a45a8ff 222 /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
bogdanm 0:9b334a45a8ff 223 * @brief IO operation functions
bogdanm 0:9b334a45a8ff 224 *
bogdanm 0:9b334a45a8ff 225 @verbatim
bogdanm 0:9b334a45a8ff 226 ===============================================================================
bogdanm 0:9b334a45a8ff 227 ##### IO operation functions #####
bogdanm 0:9b334a45a8ff 228 ===============================================================================
bogdanm 0:9b334a45a8ff 229 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 230 (+) Start the IWDG.
bogdanm 0:9b334a45a8ff 231 (+) Refresh the IWDG.
bogdanm 0:9b334a45a8ff 232
bogdanm 0:9b334a45a8ff 233 @endverbatim
bogdanm 0:9b334a45a8ff 234 * @{
bogdanm 0:9b334a45a8ff 235 */
bogdanm 0:9b334a45a8ff 236
bogdanm 0:9b334a45a8ff 237 /**
bogdanm 0:9b334a45a8ff 238 * @brief Starts the IWDG.
bogdanm 0:9b334a45a8ff 239 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 240 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 241 * @retval HAL status
bogdanm 0:9b334a45a8ff 242 */
bogdanm 0:9b334a45a8ff 243 HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 244 {
bogdanm 0:9b334a45a8ff 245 /* Process Locked */
bogdanm 0:9b334a45a8ff 246 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 247
bogdanm 0:9b334a45a8ff 248 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 249 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 250
bogdanm 0:9b334a45a8ff 251 /* Start the IWDG peripheral */
bogdanm 0:9b334a45a8ff 252 __HAL_IWDG_START(hiwdg);
bogdanm 0:9b334a45a8ff 253
bogdanm 0:9b334a45a8ff 254 /* Reload IWDG counter with value defined in the RLR register */
bogdanm 0:9b334a45a8ff 255 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 256
bogdanm 0:9b334a45a8ff 257 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 258 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 259
bogdanm 0:9b334a45a8ff 260 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 261 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 262
bogdanm 0:9b334a45a8ff 263 /* Return function status */
bogdanm 0:9b334a45a8ff 264 return HAL_OK;
bogdanm 0:9b334a45a8ff 265 }
bogdanm 0:9b334a45a8ff 266
bogdanm 0:9b334a45a8ff 267 /**
bogdanm 0:9b334a45a8ff 268 * @brief Refreshes the IWDG.
bogdanm 0:9b334a45a8ff 269 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 270 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 271 * @retval HAL status
bogdanm 0:9b334a45a8ff 272 */
bogdanm 0:9b334a45a8ff 273 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 274 {
bogdanm 0:9b334a45a8ff 275 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 276
bogdanm 0:9b334a45a8ff 277 /* Process Locked */
bogdanm 0:9b334a45a8ff 278 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 279
bogdanm 0:9b334a45a8ff 280 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 281 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 282
bogdanm 0:9b334a45a8ff 283 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 284
bogdanm 0:9b334a45a8ff 285 /* Wait until RVU flag is RESET */
bogdanm 0:9b334a45a8ff 286 while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 287 {
bogdanm 0:9b334a45a8ff 288 if((HAL_GetTick() - tickstart ) > IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 289 {
bogdanm 0:9b334a45a8ff 290 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 291 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 292
bogdanm 0:9b334a45a8ff 293 /* Process unlocked */
bogdanm 0:9b334a45a8ff 294 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 295
bogdanm 0:9b334a45a8ff 296 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 297 }
bogdanm 0:9b334a45a8ff 298 }
bogdanm 0:9b334a45a8ff 299
bogdanm 0:9b334a45a8ff 300 /* Reload IWDG counter with value defined in the reload register */
bogdanm 0:9b334a45a8ff 301 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 302
bogdanm 0:9b334a45a8ff 303 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 304 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 305
bogdanm 0:9b334a45a8ff 306 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 307 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 308
bogdanm 0:9b334a45a8ff 309 /* Return function status */
bogdanm 0:9b334a45a8ff 310 return HAL_OK;
bogdanm 0:9b334a45a8ff 311 }
bogdanm 0:9b334a45a8ff 312
bogdanm 0:9b334a45a8ff 313 /**
bogdanm 0:9b334a45a8ff 314 * @}
bogdanm 0:9b334a45a8ff 315 */
bogdanm 0:9b334a45a8ff 316
bogdanm 0:9b334a45a8ff 317 /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions
bogdanm 0:9b334a45a8ff 318 * @brief Peripheral State functions.
bogdanm 0:9b334a45a8ff 319 *
bogdanm 0:9b334a45a8ff 320 @verbatim
bogdanm 0:9b334a45a8ff 321 ===============================================================================
bogdanm 0:9b334a45a8ff 322 ##### Peripheral State functions #####
bogdanm 0:9b334a45a8ff 323 ===============================================================================
bogdanm 0:9b334a45a8ff 324 [..]
bogdanm 0:9b334a45a8ff 325 This subsection permits to get in run-time the status of the peripheral
bogdanm 0:9b334a45a8ff 326 and the data flow.
bogdanm 0:9b334a45a8ff 327
bogdanm 0:9b334a45a8ff 328 @endverbatim
bogdanm 0:9b334a45a8ff 329 * @{
bogdanm 0:9b334a45a8ff 330 */
bogdanm 0:9b334a45a8ff 331
bogdanm 0:9b334a45a8ff 332 /**
bogdanm 0:9b334a45a8ff 333 * @brief Returns the IWDG state.
bogdanm 0:9b334a45a8ff 334 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 335 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 336 * @retval HAL state
bogdanm 0:9b334a45a8ff 337 */
bogdanm 0:9b334a45a8ff 338 HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 339 {
bogdanm 0:9b334a45a8ff 340 return hiwdg->State;
bogdanm 0:9b334a45a8ff 341 }
bogdanm 0:9b334a45a8ff 342
bogdanm 0:9b334a45a8ff 343 /**
bogdanm 0:9b334a45a8ff 344 * @}
bogdanm 0:9b334a45a8ff 345 */
bogdanm 0:9b334a45a8ff 346
bogdanm 0:9b334a45a8ff 347 /**
bogdanm 0:9b334a45a8ff 348 * @}
bogdanm 0:9b334a45a8ff 349 */
bogdanm 0:9b334a45a8ff 350
bogdanm 0:9b334a45a8ff 351 #endif /* HAL_IWDG_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 352 /**
bogdanm 0:9b334a45a8ff 353 * @}
bogdanm 0:9b334a45a8ff 354 */
bogdanm 0:9b334a45a8ff 355
bogdanm 0:9b334a45a8ff 356 /**
bogdanm 0:9b334a45a8ff 357 * @}
bogdanm 0:9b334a45a8ff 358 */
bogdanm 0:9b334a45a8ff 359
bogdanm 0:9b334a45a8ff 360 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/